Electronic device for obtaining biometric information on basis of presence of contact of user body, and method for controlling same

Abstract

A processor of an electronic device according to the present disclosure is configured to: when at least one of a first PD and a second PD receives light emitted from at least one second LED and first sensing data is obtained, identify whether a user's body covers a sensor; when it is identified that the body covers the sensor, control a plurality of first LEDs to emit light of different wavelengths; and when at least one of the first PD and the second PD receives light of different wavelengths emitted from the plurality of first LEDs and second sensing data is obtained, measure biometric information of the user.

Description

Electronic device and control method for acquiring biometric information based on whether or not the user's body is in contact

[0001] One or more exemplary implementations of the present disclosure relate to an electronic device for obtaining biometric information based on contact with a user's body and a method for controlling the electronic device.

[0002] With recent advancements in electronic technology, various types of electronic devices are being developed.

[0003] In particular, wearable devices that can come into contact with parts of the user's body are being developed and distributed.

[0004] Wearable devices can acquire and provide biometric information by making contact with a part of the user's body. However, for the wearable device to acquire biometric information more accurately, it must make appropriate contact with the user's body.

[0005] The above information may be provided as background art to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above is applicable as prior art related to the present disclosure.

[0006] An electronic device according to an embodiment of the present disclosure includes a display disposed on a front side of the electronic device, a sensor disposed on a rear side of the electronic device, a memory storing instructions and including one or more storage media, and at least one processor including a processing circuit, wherein the sensor is disposed inside a first region including a center of the sensor and includes a plurality of first LEDs emitting light of different wavelengths, at least one second LED disposed between the outside of the first region and the inside of a second region including the center, and a first photo diode (PD) and a second PD disposed between the outside of the first region and the inside of the second region and receiving light emitted by the plurality of first LEDs and the at least one second LED, and the first PD and the second PD are arranged symmetrically with respect to the center, and the at least one processor, when the light emitted by the at least one second LED is received by at least one of the first PD or the second PD and first sensing data is acquired, identifies whether a user's body covers the sensor, and when the body is identified as covering the sensor, A plurality of first LEDs are controlled to emit light of different wavelengths, and when the light of different wavelengths emitted by the plurality of first LEDs is received by at least one of the first PD or the second PD to obtain second sensing data, the user's biometric information is measured.

[0007] For example, the first sensing data may include a first absorbance obtained based on the first PD receiving light emitted by the at least one second LED and a second absorbance obtained based on the second PD receiving light emitted by the at least one second LED, and the at least one processor may be configured to identify whether the body covers the first PD and the second PD based on at least one of the first absorbance or the second absorbance.

[0008] For example, the at least one second LED may include a 2-1 LED arranged in a first direction and a 2-2 LED arranged in a second direction symmetrical to the first direction with respect to the center, wherein each of the 2-1 LED and the 2-2 LED emits light in a RED to IR band, and the first PD may be arranged adjacent to the 2-1 LED, and the second PD may be arranged adjacent to the 2-2 LED.

[0009] For example, the at least one processor may be configured to identify that the body does not cover the first PD and provide feedback thereon when the first absorbance obtained by the first PD receiving the light emitted by the 2-1 LED is greater than or equal to a threshold, and to identify that the body does not cover the second PD and provide feedback thereon when the second absorbance obtained by the second PD receiving the light emitted by the 2-2 LED is greater than or equal to the threshold.

[0010] For example, the at least one processor may be configured to provide, as feedback, at least one of a UI screen, a sound notification, or a vibration notification indicating at least one of a location of the body and a location of the first PD on the back of the electronic device when the body is identified as not covering the first PD, or to provide, as feedback, at least one of a UI screen, a sound notification, or a vibration notification indicating at least one of a location of the body and a location of the second PD on the back of the electronic device when the body is identified as not covering the second PD.

[0011] For example, the at least one processor may control the at least one second LED to emit light after a preset time has elapsed when a user command for controlling the measurement of the biometric information is received, and may disable touch detection through the display while acquiring the first sensing data after the preset time has elapsed.

[0012] For example, the electronic device further includes a motion sensor, and the at least one processor controls the at least one second LED to emit light after the preset time has elapsed when the rotation of the electronic device is detected through the motion sensor so that the rear side of the electronic device faces upward, and controls the plurality of first LEDs to emit light when the body is identified as covering the first PD and the second PD.

[0013] For example, the at least one processor may be configured to provide at least one of a UI screen, a sound notification, or a vibration notification indicating the time remaining until measurement of the biometric information while acquiring the second sensing data.

[0014] For example, the at least one processor may measure biometric information of the user based on the second sensing data, wherein the biometric information may include an antioxidant concentration of the body.

[0015] For example, the first region may include a range of 2 mm from the center, the second region may include a range of 20 mm from the center, and the at least one second LED, the first PD and the second PD may be disposed within a range of 2 mm to 20 mm from the center, the first PD may be disposed within a range of 6 mm from a 2-1 LED included in the at least one second LED, and the second PD may be disposed within a range of 6 mm from a 2-2 LED included in the at least one second LED.

[0016] In a control method of an electronic device according to an embodiment, the electronic device includes a display disposed on a front side of the electronic device and a sensor disposed on a rear side of the electronic device, the sensor including a plurality of first LEDs disposed inside a first region including a center of the sensor and emitting light of different wavelengths, at least one second LED disposed between the outside of the first region and the inside of a second region including the center, and a first PD (photo diode) and a second PD disposed between the outside of the first region and the inside of the second region and receiving light emitted by the plurality of first LEDs and the at least one second LED, the first PD and the second PD being symmetrically disposed with respect to the center, and the method includes: an operation of identifying whether a user's body covers the sensor when light emitted by the at least one second LED is received by at least one of the first PD or the second PD to obtain first sensing data; an operation of controlling each of the plurality of first LEDs so that the plurality of first LEDs emit light of the different wavelengths when the body is identified as covering the sensor; and an operation of controlling the plurality of first LEDs to emit light of the different wavelengths when the plurality of first LEDs are detected. An operation of measuring the user's biometric information is included when the light of the different wavelengths emitted by the LEDs is received by at least one of the first PD or the second PD to obtain second sensing data.

[0017] For example, the first sensing data includes a first absorbance obtained by the first PD receiving light emitted by the at least one second LED and a second absorbance obtained by the second PD receiving light emitted by the at least one second LED, and the operation of identifying whether the body covers the sensor may include an operation of identifying whether the body covers the first PD and the second PD based on at least one of the first absorbance or the second absorbance.

[0018] For example, the at least one second LED may include a 2-1 LED arranged in a first direction and a 2-2 LED arranged in a second direction symmetrical to the first direction with respect to the center, wherein each of the 2-1 LED and the 2-2 LED emits light in a RED to IR band, and the first PD may be arranged adjacent to the 2-1 LED, and the second PD may be arranged adjacent to the 2-2 LED.

[0019] For example, the operation of identifying whether the sensor is covered may include an operation of identifying that the body does not cover the first PD and providing feedback thereon if the first absorbance obtained by the first PD receiving the light emitted by the 2-1 LED is greater than or equal to a threshold, and an operation of identifying that the body does not cover the second PD and providing feedback thereon if the second absorbance obtained by the second PD receiving the light emitted by the 2-2 LED is greater than or equal to the threshold.

[0020] For example, the operation of providing feedback to cover the first PD may include providing, as the feedback, at least one of a UI screen, a sound notification, or a vibration notification, indicating at least one of a location of the body and a location of the first PD on the rear surface of the electronic device, if the body is identified as not covering the first PD, and the operation of providing feedback to cover the second PD may include providing, as the feedback, at least one of a UI screen, a sound notification, or a vibration notification, indicating at least one of a location of the body and a location of the second PD on the rear surface of the electronic device, if the body is identified as not covering the second PD.

[0021] The above-mentioned and other aspects, features and advantages of this disclosure can be more clearly understood in conjunction with the drawings provided along with the detailed description below.

[0022] FIG. 1 illustrates an electronic device according to an embodiment of the present disclosure.

[0023] FIG. 2 is a block diagram of an electronic device according to an embodiment of the present disclosure.

[0024] FIG. 3A is a perspective view illustrating the front of an electronic device according to an embodiment of the present disclosure.

[0025] FIG. 3b is a perspective view illustrating the rear side of an electronic device according to an embodiment of the present disclosure.

[0026] FIG. 3c is an exploded perspective view of an electronic device according to an embodiment of the present disclosure.

[0027] FIG. 4 is a block diagram of an electronic device according to an embodiment of the present disclosure.

[0028] FIG. 5 is a drawing for explaining a sensor according to an embodiment of the present disclosure.

[0029] FIG. 6 is a drawing for explaining a UI provided by an electronic device according to a user command for controlling measurement of biometric information according to an embodiment of the present disclosure.

[0030] FIG. 7 is a drawing for explaining contact between a user's body and a sensor according to an embodiment of the present disclosure.

[0031] FIG. 8 is a drawing illustrating an example in which a user's body does not properly cover a sensor according to an embodiment of the present disclosure.

[0032] FIG. 9 is a drawing illustrating an example in which a user's body does not properly cover a sensor according to an embodiment of the present disclosure.

[0033] FIG. 10 is a graph illustrating first sensing data acquired through multiple PDs when a user's body does not cover the sensor according to an embodiment of the present disclosure.

[0034] FIG. 11 is a graph for explaining the intensity information of reflected light according to contact between a user's body and a sensor according to an embodiment of the present disclosure.

[0035] FIG. 12 is a graph for explaining the absorbance included in the first sensing data according to an embodiment of the present disclosure.

[0036] FIG. 13 is a flowchart for explaining a control method of an electronic device according to an embodiment of the present disclosure.

[0037] FIG. 14 is a flowchart for explaining a control method of an electronic device according to an embodiment of the present disclosure.

[0038] FIG. 15 is a flowchart for explaining a control method of an electronic device according to an embodiment of the present disclosure.

[0039] The present disclosure is described in detail below with reference to the accompanying drawings. In the detailed description of the drawings, identical or similar components may be designated by identical or similar reference numerals.

[0040] The terms used in the embodiments of this disclosure have been selected from widely used, current terms, taking into account the functions of this disclosure. However, these terms may vary depending on the intentions of those skilled in the art, precedents, the emergence of new technologies, etc. Furthermore, in certain cases, terms may be arbitrarily selected by the applicant, and in such cases, their meanings will be described in detail in the description of the relevant disclosure. Therefore, the terms used in this disclosure should not be defined simply as names of terms, but rather based on the meanings of the terms and the overall content of this disclosure.

[0041] In this specification, expressions such as “has,” “can have,” “includes,” or “may include” indicate the presence of a feature (e.g., a number, function, operation, or component such as a part), and do not exclude the presence of additional features.

[0042] The expression "at least one of A and / or B" should be understood to mean either "A" or "B" or "A and B".

[0043] As used herein, the expressions “first,” “second,” “first,” or “second,” etc., may describe various components, regardless of order and / or importance, and are only used to distinguish one component from another, but do not limit the components.

[0044] When it is said that a component (e.g., a first component) is “(operatively or communicatively) coupled with / to” or “connected to” another component (e.g., a second component), it should be understood that the component may be directly coupled to the other component, or may be connected through another component (e.g., a third component).

[0045] Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, terms such as "comprise" or "comprises" are intended to indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but should be understood not to preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0046] In this disclosure, the term user may refer to a person using an electronic device or a device using an electronic device (e.g., an artificial intelligence electronic device).

[0047] Hereinafter, embodiments of the present disclosure will be described in more detail with reference to the attached drawings.

[0048] FIG. 1 illustrates an electronic device according to an embodiment of the present disclosure.

[0049] The electronic device (100) according to various embodiments of the present disclosure may include a wearable device or a portable device. Here, a wearable device refers to a device that includes a flexible material (e.g., silicone rubber, fiber) and can be worn by a user or can come into contact with a part of the user's body. For example, various types of devices that can be worn on the body by a person or an animal, such as watches, clothing, shoes, gloves, glasses, hats, and accessories (e.g., rings), may be included in the wearable device. However, these are merely examples and the present invention is not limited thereto.

[0050] According to an embodiment, the electronic device (100) may measure the user's body information by coming into contact with a part of the user's body. For example, the electronic device (100) may include a photoplethysmogram (PPG) sensor (or, a photoplethysmogram sensor), and may measure heart rate and blood oxygen saturation (SpO2) using the PPG sensor. In addition, the electronic device (100) may measure the user's physical activity (e.g., number of steps, calories consumed, distance traveled), body temperature, and / or bioelectrical impedance.

[0051] According to an embodiment, the electronic device (100) may identify sleep patterns such as deep sleep, light sleep, and REM (rapid eye movement) sleep based on heart rate, physical activity, and body temperature. According to an embodiment, the electronic device (100) may measure impedance by applying a micro-electrical signal to the human body, and may measure the amount of water and body fat in the user's body through bioelectrical impedance analysis (BIA). In addition, the electronic device (100) may include an electrocardiogram (ECG) measurement sensor, and may measure the user's electrocardiogram using the ECG measurement sensor.

[0052] An electronic device (100) according to an embodiment of the present disclosure can measure the concentration of antioxidant components in a user's body.

[0053] Although active oxygen is important as a biological protective factor, such as the bactericidal action of white blood cells, excessive production of active oxygen in the body is known to cause various tissue diseases.

[0054] Active oxygen species are naturally produced in the body during the process of generating energy (i.e., metabolic processes) and are an important factor in the sterilizing action of white blood cells. However, excessive production of active oxygen species can damage cells and DNA (deoxyribonucleic acid) in the body and cause chronic diseases and aging.

[0055] Antioxidants neutralize active oxygen and prevent cell damage and aging in the body, so it is necessary to properly manage the concentration of antioxidants in the body by consuming enough foods containing antioxidants such as vitamin E, vitamin C, β-carotene, polyphenols, and trace elements (e.g., selenium, copper, zinc).

[0056] An electronic device (100) according to an embodiment of the present disclosure may induce contact of a sensor with a finger (10), palm, sole, or forehead, where antioxidant components are mainly accumulated due to a thick stratum corneum on the outside of the body (e.g., skin), in order to measure the concentration of antioxidant components outside the body in a non-invasive manner, rather than approaching the inside of the body in an invasive manner to measure the concentration of antioxidant components in the blood.

[0057] For example, when a finger (10) comes into contact with a sensor of the electronic device (100), the electronic device (100) can obtain an optical signal using an LED (light emitting diode) and a PD (photo diode) included in the sensor, and measure the user's body (or biometric) information, particularly the concentration of an antioxidant component, based on the obtained optical signal.

[0058] According to an embodiment, the electronic device (100) measures the concentration of an antioxidant component through a finger (10) that has a relatively smaller area than a wrist, so the finger (10) may not completely cover the sensor, and the concentration of an antioxidant component measured when the finger (10) does not completely cover the sensor has a problem of somewhat low reliability.

[0059] According to an embodiment, the electronic device (100) provides feedback by identifying whether the finger (10) completely covers the sensor, and can measure the concentration of the antioxidant component when the finger (10) completely covers the sensor. Hereinafter, the expression 'the sensor is covered by the finger (or the user's body)' means that the finger (or the user's body) sufficiently or completely covers the sensor.

[0060] For example, if the finger (10) covers only one area of ​​the sensor and does not cover the remaining area, the electronic device (100) provides feedback to cover the entire area of ​​the sensor (i.e., completely cover the sensor), and if it is identified that the finger (10) covers the entire area of ​​the sensor after the user receives the feedback, the concentration of the antioxidant component can be measured using the LED and PD (photo diode) included in the sensor.

[0061] FIG. 2 is a block diagram of an electronic device according to an embodiment of the present disclosure.

[0062] FIG. 2 is a block diagram of an example electronic device capable of performing operations according to an embodiment of the present disclosure.

[0063] Referring to FIG. 2, the electronic device (100) may be implemented in various forms (191) that can be worn by a user, such as a smart watch, a smart band, a smart ring, wireless earphones, or smart glasses, but is not limited thereto. The components, their relationships, and their functions illustrated in FIG. 2 are merely examples and do not limit the implementations described or claimed in this document. The electronic device (100) may be referred to as a mobile device, a user device, a multi-function device, a portable device, or a server, but is not limited thereto.

[0064] The electronic device (100) may include components including at least one processor (110), at least one memory (120) (hereinafter referred to as memory (120)), at least one display (140) (hereinafter referred to as display (140)), at least one image sensor (150) (hereinafter referred to as image sensor (150)), at least one communication circuit (160) (hereinafter referred to as communication circuit (160)), and / or at least one sensor (170) (hereinafter referred to as sensor (170)). The above components are merely exemplary. For example, the electronic device (100) may include other components (e.g., power management integrated circuitry (PMIC), audio processing circuitry, an antenna, a rechargeable battery, or an input / output interface). For example, some components may be omitted from the electronic device (100). For example, some components may be integrated into one component.

[0065] At least one processor (110) may be implemented as one or more IC (integrated circuit (or circuitry)) chips and may perform various data processing. At least one processor (110) may include at least one electrical circuit and may individually or collectively perform distributed processing of instructions (or programs, data) stored in a memory (120). At least one processor (110) may include a processor assembly including one or more processing circuits. At least one processor (110) may include any processing circuit operative to control the performance and operations of one or more components (e.g., memory (120), microphone (130), display (140), image sensor (150), communication circuit (160), sensor (170), and / or speaker (180)) of the electronic device (100). For example, at least one processor (110) (e.g., an application processor (AP)) may be implemented as a system on chip (SoC) (e.g., a single chip or chipset). For example, at least one processor (110) may be implemented as multiple cores (or at least one core circuit), multiple chips, or multiple chipsets. For example, at least one processor (110) may include one or more processing circuits. For example, at least one processor (110) may include one or more processing circuits configured to individually and / or collectively perform various functions of the present disclosure. As a non-limiting example, at least a portion of at least one processor (110) may be included in a first chip of the electronic device (100), and at least another portion of at least one processor (110) may be included in a second chip of the electronic device (100) that is different from the first chip of the electronic device (100).

[0066] For example, at least one processor (110) may include a central processing unit (CPU) (111), a graphics processing unit (GPU) (112), a neural processing unit (NPU) (113), an image signal processor (ISP) (114), a display controller (115), a memory controller (116), a storage controller (117), a communication processor (CP) (118), and / or a sensor interface (119). These components of at least one processor (110) are merely exemplary. For example, at least one processor (110) may further include other components. For example, some components of at least one processor (110) may be omitted from at least one processor (110). For example, some components of at least one processor (110) may be included as separate components of the electronic device (100) outside of at least one processor (110). For example, some components of at least one processor (110) (e.g., a memory controller (116)) may be included within other components of the electronic device (100) (e.g., at least a portion of the memory (120), an interface (e.g., available for connection to at least one component of the electronic device (100)), a display (140) and / or an image sensor (150)).

[0067] At least one processor (110) can control other components of the electronic device (100) to perform various operations by executing instructions stored in the memory (120). The CPU (111) (or central processing circuit) can be configured to control components of the at least one processor (110) based on the execution of instructions stored in the memory (120) (e.g., volatile memory (121) and / or non-volatile memory (122)). The GPU (112) (or graphics processing circuit) can be configured to execute parallel operations (e.g., rendering). The NPU (113) (or neural processing circuit, or AI (artificial intelligence) chip) can be configured to execute operations for an artificial intelligence model (e.g., convolution computation). The ISP (114) (or image signal processing circuit) may be configured to process a raw image acquired through the image sensor (150) into a format suitable for a component within the electronic device (100) or a component of at least one processor (110). The display controller (115) (or display control circuit, or display processing unit (DPU)) may be configured to process an image acquired from the CPU (111), the GPU (112), the ISP (114), or the memory (120) (e.g., the volatile memory (121)) into a format suitable for the display (140). The memory controller (116) (or memory control circuit) may be configured to control reading data from the volatile memory (121) and writing data to the volatile memory (121). The storage controller (117) (or storage control circuit) may be configured to control reading data from the nonvolatile memory (122) and writing data to the nonvolatile memory (122).The CP (118) (communication processing circuit) may be configured to process data obtained from at least one component of the processor (110) into a format suitable for transmitting to another electronic device via the communication circuit (160), or to process data obtained from another electronic device via the communication circuit (160) into a format suitable for processing by the component of at least one processor (110). For example, the communication circuit (160) may include one or more communication circuits. The sensor interface (119) (or sensing data processing circuit, sensor hub) may be configured to process data on the state of the electronic device (100) and / or the state of the surroundings of the electronic device (100), obtained via the sensor (170), into a format suitable for the component of at least one processor (110).

[0068] The memory (120) may include one or more storage media (or one or more storage devices). For example, the memory (120) may include a memory assembly including one or more storage media. For example, the one or more storage media may include permanent memory (e.g., non-volatile memory (122)) such as a hard drive, flash memory, read-only memory (ROM), semi-permanent memory (e.g., volatile memory (121)) such as random access memory (RAM), any other suitable type of storage (or storage assembly), or any combination thereof. The memory (120) may include cache memory, which is one or more different types of memory used to temporarily store data for a function or feature of the electronic device (100). As a non-limiting example, the cache memory may be included within at least one processor (110). The memory (120) may be fixedly embedded within the electronic device (100) or incorporated into one or more suitable types of components (e.g., a subscriber identity module (SIM) card and / or a secure digital (SD) card) that may be repeatedly inserted into and removed from the electronic device (100).

[0069] For example, the memory (120) may store one or more software applications, such as an operating system (or system) software application, a firmware software application, a driver software application, a plug-in (e.g., add-in, add-on, and / or applet) software application, and / or any other suitable software applications. For example, the one or more software applications may include instructions executable by at least one processor (110). For example, the memory (120) may store instructions callable by an application programming interface (API). For example, the memory (120) may store instructions within a library.

[0070] The microphone (130) can acquire sounds output from external objects and / or sounds generated from the electronic device (100). Depending on the embodiment, the number of microphones (130) may be one or more. The speaker (180) can output sounds to the outside. Depending on the embodiment, the number of speakers (180) may be one or more.

[0071] The display (140) may be controlled by at least one processor (110) (or, the processor (110)) to output one or more visualized information to the user. The one or more visualized information may include a visual object displayed on the display (140). For example, the visual object may include a screen, an image, an icon, a graphical user interface (GUI), or a user interface (UI) element. For example, the display (140) may be implemented as a flat panel display (FPD), a curved display, or a flexible display, but is not limited thereto. For example, the display (140) may be implemented as a variety of displays, such as a liquid crystal display (LCD), an active matrix organic light emitting diode (AMOLED), a light emitting diode (LED), a micro LED, or a mini LED, but is not limited thereto.

[0072] The display (140) may include a touch-sensitive circuit configured to detect a touch. The touch-sensitive circuit may acquire a user input to the display (140). For example, the touch-sensitive circuit may detect an input (e.g., a touch input or a hovering input) at a specific location of the display (140) by measuring a change in a signal (e.g., voltage, light intensity, resistance, or charge) at the specific location, and provide information about the detected input to the processor (110).

[0073] The communication circuit (160) can perform data communication with other electronic devices under the control of the processor (110). For example, the communication circuit (160) can transmit and receive control commands or data with other electronic devices. For example, the communication circuit (160) can support transmission and / or reception of electrical signals based on various types of protocols such as, but not limited to, Ethernet, LAN (local area network), WAN (wide area network), WiFi (wireless fidelity), Bluetooth, BLE (bluetooth low energy), ZigBee, NFC (Near Field Communication), ANT+, Cellular (LTE, 5G, 6G, NB-IoT), RFID, UWB (ultra wide band), GNSS (global navigation satellite system), or RF communication.

[0074] The sensor (170) can generate electrical information that can be processed by the processor (110) and / or the memory (120) from non-electronic information related to the electronic device (100). The information can be referred to as sensor data. The sensor (170) can detect the operating status of the electronic device (100) (e.g., power or temperature) or the external environmental status (e.g., user status) and generate electrical information corresponding to the detected status.

[0075] According to one embodiment, the sensor (170) may include a biosensor and an electrode sensor.

[0076] A biometric sensor may be configured to detect a user's biometric information. The biometric information may include various data indicating the user's physical or physiological state. For example, the biometric sensor may include a photoplethysmography (PPG) sensor or a biomarker sensor.

[0077] According to one embodiment, a biometric sensor may include an emitter and a receiver (or detector). The biometric sensor may output light to the outside through the emitter under the control of a processor (110). The output of light (or light) may be replaced with expressions such as emission, divergence, or irradiation of light, for example. The emitter may include a plurality of light-emitting elements. For example, the light-emitting elements may be implemented as a light emitting diode (LED), a laser diode, or a vertical cavity surface emitting laser (VCSEL). The light output by the emitter may include at least one of infrared (IR) ray, visible light, or ultraviolet (UV) ray. The emitter may include a light-emitting element for outputting light corresponding to each of infrared, visible, and ultraviolet rays.

[0078] The light emitted from the light-emitting unit can be irradiated onto the user's skin. The user's skin may include various body parts that come into contact with the biosensor. For example, the body parts may include the palm or sole of the foot, which have a thick epidermal layer, areas where venous or capillary blood is located, or other areas with a high blood vessel density, such as the fingers, toes, or earlobes. In addition, the body parts may include the wrist, fingers, or inside the ear, which may come into contact with the biosensor when wearing the electronic device (100).

[0079] At least a portion of the irradiated light may be scattered or reflected by the user's body (e.g., skin, skin tissue, fat layer, veins, arteries, or capillaries). The light receiving unit may receive the scattered or reflected light and convert the received light into an electrical signal. For example, the light receiving unit may include at least one photodiode (PD) and a phototransistor. However, the present invention is not limited thereto, and may be implemented as a complementary metal-oxide semiconductor (CMOS) image sensor or a charge-coupled device (CCD) image sensor. As a non-limiting example, the biosensor may include an amplifier for amplifying the electrical signal and an analog-to-digital converter (ADC) for converting the electrical signal into a digital signal.

[0080] According to one embodiment, the biometric sensor can measure the user's biometric information based on the received light under the control of the processor (110).

[0081] For example, the processor (110) outputs visible light (e.g., green light, red light, or blue light) or infrared light to the user's skin, and when the output light is reflected by blood vessels and received, the amount of light reflected or absorbed based on the received light is measured to obtain a PPG signal, and the PPG signal can be used to obtain heart rate (HR), oxygen saturation (SpO2), blood pressure, blood volume, and stress index.

[0082] For example, the processor (110) outputs light of a specific wavelength to the user's skin, and when the output light is reflected by the user's skin or blood vessels and received, the received light can be analyzed to obtain information about a specific substance (or specific component) in the skin or blood vessels of the body. For example, the processor (110) can estimate the concentration of a specific substance using data acquired by a biosensor. The substance may include, for example, an antioxidant including a carotenoid, glucose, urea, lactate, triglyceride, total protein, cholesterol, or ethanol, but the present disclosure is not limited thereto. For convenience of explanation, an antioxidant will be described below as an example.

[0083] The electrode sensor may be configured to detect biometric information through contact with the user's body. For example, the electrode sensor may include at least one electrode. Under the control of the processor (110), the electrode sensor may detect electrical signals from the body through electrodes in contact with the body, thereby measuring an electrocardiogram (ECG), an electromyogram (EMG), or an electroencephalogram (EEG).

[0084] According to one embodiment, the sensor (170) may include a light sensor, an acceleration sensor, a gyro sensor, a geomagnetic sensor, a barometer, or a temperature sensor.

[0085] The light sensor can detect the brightness of external light. For example, the processor (110) can control the brightness of the display (140) using sensor data detected by the light sensor. The acceleration sensor can detect acceleration or impact caused by the movement of the electronic device (100) or the movement of a user carrying the electronic device (100). The gyro sensor can detect the rotational direction or rotational angle of the electronic device (100) caused by the movement of the electronic device (100) or the movement of a user using or carrying the electronic device (100). The geomagnetic sensor can detect the direction of geomagnetism. For example, the processor (110) can identify the user's motion (or movement) using sensor data detected by the acceleration sensor, gyro sensor, or geomagnetic sensor. The barometric pressure sensor can detect barometric pressure. For example, the processor (110) can obtain altitude information of the electronic device (100) using sensor data detected by the barometric pressure sensor. A temperature sensor can measure a body's temperature using either a contact or non-contact method. For example, the processor (110) can obtain the user's body temperature information using sensor data detected by the temperature sensor.

[0086] FIG. 3a is a perspective view depicting a front side of an electronic device according to an embodiment of the present disclosure, and FIG. 3b is a perspective view depicting a rear side of an electronic device according to an embodiment of the present disclosure.

[0087] Referring to FIGS. 3A and 3B , an electronic device (200) according to an embodiment (e.g., the electronic device (101) of FIG. 1 ) may include a housing (210) including a first side (or front side) (210A), a second side (or back side) (210B), and a side surface (210C) surrounding a space between the first side (210A) and the second side (210B), and a fastening member (250, 260) connected to at least a portion of the housing (210) and configured to releasably fasten the electronic device (200) to a body part (e.g., a wrist or an ankle) of a user. In another embodiment (not shown), the housing may also refer to a structure forming a portion of the first side (210A), the second side (210B), and the side surface (210C) of FIGS. 3A and 3B . According to an embodiment, the first side (210A) may be formed by or include a front plate (201) that is at least partially substantially transparent (e.g., a glass plate including various coating layers, or a polymer plate). The second side (210B) may be formed by or include a substantially opaque back plate (207). The back plate (207) may be formed by or include, for example, coated or colored glass, ceramic, polymer, metal (e.g., aluminum, stainless steel (STS), and / or magnesium), or a combination of at least two of the foregoing materials. The side surface (210C) may be formed by or include a side bezel structure (or “side member”) (206) that is coupled to the front plate (201) and the back plate (207) and includes a metal and / or a polymer. In some embodiments, the back plate (207) and the side bezel structure (206) may be formed integrally and include the same material (e.g., a metal material such as aluminum), but are not limited thereto, and may be formed by a woven material, leather, rubber, urethane, metal, ceramic, or a combination of at least two of the above materials.Accordingly, the above-mentioned bonding member (250, 260) can be formed so that the integral and multiple unit links can flow with each other.

[0088] According to an embodiment, the electronic device (200) may include at least one of a display (220, see FIG. 3), an audio module (205, 208), a sensor module (211), a key input device (202, 203, 204), and a connector hole (209). In some embodiments, the electronic device (200) may omit at least one of the components (e.g., the key input device (202, 203, 204), the connector hole (209), or the sensor module (211)) or may additionally include other components.

[0089] The display (220) may be visually exposed, for example, through a significant portion of the front plate (201). The display (220) may have a shape corresponding to the shape of the front plate (201), and may have various shapes such as a circle, an oval, or a polygon. The display (220) may be coupled to or disposed adjacent to a touch detection circuit, a pressure sensor capable of measuring the intensity (pressure) of a touch, and / or a fingerprint sensor.

[0090] The audio module (205, 208) may include a microphone hole (205) and a speaker hole (208). The microphone hole (205) may be configured such that a microphone (e.g., a microphone (130) of FIG. 2) for acquiring external sounds may be placed inside the electronic device (200), and in some embodiments, multiple microphones may be placed to detect the direction of sounds. The speaker hole (208) may be used as an external speaker and a receiver for calls. In some embodiments, the speaker hole (208) and the microphone hole (205) may be implemented as a single hole, or a speaker (e.g., a speaker (180) of FIG. 2) may be included without the speaker hole (208) (e.g., a piezo speaker).

[0091] A sensor (211) (e.g., sensor (170) of FIG. 2) can generate an electrical signal or data value corresponding to an internal operating state of the electronic device (200) or an external environmental state. The sensor (211) may include, for example, a biometric sensor (211) (e.g., an HRM sensor) disposed on the second surface (210B) of the housing (210). The electronic device (200) may further include at least one of a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor, which are not illustrated.

[0092] The sensor (211) may include electrode regions (213, 214) forming a portion of a surface of the electronic device (200) (e.g., the second surface (210B)) and a biosignal detection circuit (not shown) electrically connected to the electrode regions (213, 214). For example, the electrode regions (213, 214) may include a first electrode region (213) and a second electrode region (214) disposed on the second surface (210B) of the housing (210). The sensor (211) may be configured such that the electrode regions (213, 214) obtain an electrical signal from a portion of the user's body, and the biosignal detection circuit detects the user's bioinformation based on the electrical signal.

[0093] The key input devices (202, 203, 204) may include a wheel key (202) disposed on a first side (210A) of the housing (210) and rotatable in at least one direction, and / or a side key button (203, 204) disposed on a side surface (210C) of the housing (210). The wheel key may have a shape corresponding to the shape of the front plate (201). In other embodiments, the electronic device (200) may not include some or all of the above-mentioned key input devices (202, 203, 204), and the key input devices (202, 203, 204) that are not included may be implemented in another form, such as a soft key, on the display (220). The connector hole (209) may include another connector hole (not shown) that may accommodate a connector (e.g., a USB connector) for transmitting and receiving power and / or data with an external electronic device, and may accommodate a connector for transmitting and receiving audio signals with the external electronic device. The electronic device (200) may further include, for example, a connector cover (not shown) that covers at least a portion of the connector hole (209) and blocks the inflow of external foreign substances into the connector hole.

[0094] The fastening member (250, 260) can be detachably fastened to at least a portion of the housing (210) using a locking member (251, 261). The fastening member (250, 260) can include one or more of a fixing member (252), a fixing member fastening hole (253), a band guide member (254), and a band fastening ring (255).

[0095] The fixing member (252) can be configured to fix the housing (210) and the fastening members (250, 260) to a part of the user's body (e.g., a wrist or an ankle). The fastening member fastening hole (253) can fix the housing (210) and the fastening members (250, 260) to a part of the user's body in response to the fastening member (252). The band guide member (254) is configured to limit the range of motion of the fastening member (252) when the fastening member (252) is fastened to the fastening member fastening hole (253), thereby allowing the fastening members (250, 260) to be fastened in close contact with a part of the user's body. The band fixing ring (255) can limit the range of motion of the fastening members (250, 260) when the fastening member (252) and the fastening member fastening hole (253) are fastened.

[0096] FIG. 3c is an exploded perspective view of an electronic device according to an embodiment of the present disclosure.

[0097] Referring to FIG. 3C, an electronic device (300) (e.g., the electronic device (101) of FIG. 1 or the electronic device (200) of FIGS. 3A to 3B) may include a side bezel structure (310), a wheel key (320) (e.g., the wheel key (202) of FIGS. 3A and 3B), a front plate (201), a display (220), a first antenna (350), a second antenna (355), a support member (360) (e.g., a bracket), a battery (370), a printed circuit board (380), a sealing member (390), a rear plate (393) (e.g., the rear plate (207) of FIGS. 3A and 3B), and fastening members (395, 397) (e.g., the fastening members (250, 260) of FIGS. 3A and 3B). At least one of the components of the electronic device (300) may be identical or similar to at least one of the components of the electronic device (100) of FIG. 1 or the electronic device (200) of FIGS. 3A to 3B, and any overlapping descriptions will be omitted below. The support member (360) may be disposed inside the electronic device (300) and connected to the side bezel structure (310), or may be formed integrally with the side bezel structure (310). The support member (360) may be formed of, for example, a metal material and / or a non-metallic (e.g., a polymer) material. The support member (360) may have a display (220) coupled to one surface and a printed circuit board (380) coupled to the other surface. The printed circuit board (380) may be equipped with a processor (e.g., the processor (110) of FIG. 2), a memory (e.g., the memory (120) of FIG. 2), and / or an interface. The processor may include, for example, one or more of a central processing unit, a graphics processing unit (GPU), an application processor, a sensor processor, or a communication processor.

[0098] The memory may include, for example, volatile memory (e.g., volatile memory (121) of FIG. 2) or non-volatile memory (e.g., non-volatile memory (122) of FIG. 2). The interface may include, but is not limited to, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, and / or an audio interface, for example. The interface may electrically or physically connect the electronic device (300) to an external electronic device, and may include, but is not limited to, a USB connector, an SD card / MMC connector, or an audio connector, for example.

[0099] The battery (370) is a device for supplying power to at least one component of the electronic device (300), and may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell. At least a portion of the battery (370) may be disposed substantially on the same plane as, for example, the printed circuit board (380). The battery (370) may be disposed integrally within the electronic device (300), or may be disposed detachably from the electronic device (300).

[0100] The first antenna (350) may be positioned between the display (220) and the support member (360). The first antenna (350) may include, for example, a near field communication (NFC) antenna, a wireless charging antenna, and / or a magnetic secure transmission (MST) antenna. The first antenna (350) may, for example, perform short-range communication with an external device, wirelessly transmit and receive power required for charging, and transmit a magnetic-based signal including a short-range communication signal or payment data. In another embodiment, the antenna structure may be formed by a portion or a combination of the side bezel structure (310) and / or the support member (360).

[0101] The second antenna (355) may be positioned between the printed circuit board (380) and the back plate (393). The second antenna (355) may include, for example, a near field communication (NFC) antenna, a wireless charging antenna, and / or a magnetic secure transmission (MST) antenna. The second antenna (355) may, for example, perform short-range communication with an external device, wirelessly transmit and receive power required for charging, and transmit a magnetic-based signal including a short-range communication signal or payment data. In another embodiment, the antenna structure may be formed by a portion or a combination of the side bezel structure (310) and / or the back plate (393).

[0102] A sealing member (390) may be positioned between the side bezel structure (310) and the rear plate (393). The sealing member (390) may be configured to block moisture and foreign substances from entering the space surrounded by the side bezel structure (310) and the rear plate (393) from the outside.

[0103] FIG. 4 is a block diagram of an electronic device according to an embodiment of the present disclosure.

[0104] Referring to FIG. 4, the electronic device (100) may include a memory (120), a display (140), a sensor (170), and at least one processor (110) (hereinafter, processor (110)). Descriptions overlapping with those in FIG. 2 are omitted.

[0105] According to an embodiment, the processor (110) may be implemented as a digital signal processor (DSP), a microprocessor, or a timing controller (TCON) that processes a digital signal, but is not limited thereto. However, the processor (110) is not limited thereto, and may include one or more of a central processing unit (CPU), a micro controller unit (MCU), a micro processing unit (MPU), a controller, an application processor (AP), a communication processor (CP), an ARM processor, or an artificial intelligence (AI) processor, or may be defined by the relevant terms. In addition, the processor (110) may be implemented as a system on chip (SoC) having a built-in processing algorithm, a large scale integration (LSI), or may be implemented in the form of a field programmable gate array (FPGA). The processor (110) may perform various functions by executing computer executable instructions stored in the memory (120).

[0106] The processor (110) may include, but is not limited to, one or more of a central processing unit (CPU), a graphics processing unit (GPU), an accelerated processing unit (APU), a many integrated core (MIC), a digital signal processor (DSP), a neural processing unit (NPU), a hardware accelerator, or a machine learning accelerator. The processor (110) may control one or any combination of other components of the electronic device, and may perform operations related to communication or data processing. The processor (110) may execute one or more programs or instructions stored in a memory. For example, the processor (110) may perform a method according to an embodiment of the present disclosure by executing one or more instructions stored in a memory (120).

[0107] When a method according to an embodiment of the present disclosure includes a plurality of operations, the plurality of operations may be performed by a single processor or by a plurality of processors. For example, when a first operation, a second operation, and a third operation are performed by a method according to an embodiment, the first operation, the second operation, and the third operation may all be performed by the first processor, or the first operation and the second operation may be performed by the first processor (e.g., a general-purpose processor) and the third operation may be performed by the second processor (e.g., an artificial intelligence-dedicated processor).

[0108] The processor (110) may be implemented as a single core processor including one core, or may be implemented as one or more multicore processors including a plurality of cores (e.g., homogeneous multicores or heterogeneous multicores). When the processor (110) is implemented as a multicore processor, each of the plurality of cores included in the multicore processor may include an internal processor memory, such as a cache memory or an on-chip memory, and a common cache shared by the plurality of cores may be included in the multicore processor. In addition, each of the plurality of cores (or some of the plurality of cores) included in the multicore processor may independently read and execute a program instruction for implementing a method according to an embodiment of the present disclosure, or all (or some) of the plurality of cores may be linked to read and execute a program instruction for implementing a method according to an embodiment of the present disclosure.

[0109] When a method according to an embodiment of the present disclosure includes a plurality of operations, the plurality of operations may be performed by one core among a plurality of cores included in a multi-core processor, or may be performed by a plurality of cores. For example, when a first operation, a second operation, and a third operation are performed by a method according to an embodiment, the first operation, the second operation, and the third operation may all be performed by a first core included in the multi-core processor, or the first operation and the second operation may be performed by a first core included in the multi-core processor, and the third operation may be performed by a second core included in the multi-core processor.

[0110] In embodiments of the present disclosure, a processor may mean a system on a chip (SoC) in which a processor and other electronic components are integrated, a single-core processor, a multi-core processor, or a core included in a single-core processor or a multi-core processor, wherein the core may be implemented as a CPU, a GPU, an APU, a MIC, a DSP, an NPU, a hardware accelerator, or a machine learning accelerator, but embodiments of the present disclosure are not limited thereto.

[0111] According to an embodiment, the sensor (170) includes a plurality of first LEDs (171). For example, the plurality of first LEDs (171) may be arranged within a first region including the center of the sensor (170).

[0112] According to an embodiment, the first region may be a circle within a first distance from the center. For example, the first region may be a circular region within a distance of 2 mm from the center. However, 2 mm is an example of the first distance for convenience of explanation, and the present invention is not limited thereto.

[0113] According to an embodiment, each of the plurality of first LEDs (171) can emit light of a different wavelength.

[0114] In some embodiments, the sensor (170) includes at least one second LED (172). For example, the at least one second LED (172) may be positioned between the exterior of the first region and the interior of the second region including the center. In some embodiments, the at least one second LED (172) may emit light in the red (RED) to infrared (IR) band.

[0115] In some embodiments, the second region may be a circle within a second distance from the center, and the second distance may be greater than the first distance. For example, the second region may be a circular region defined by points within a distance of 20 mm from the center. However, 20 mm is merely an example of the second distance for convenience of explanation, and is not limited thereto.

[0116] According to an embodiment, the first circular region and the second circular region may be concentric.

[0117] According to an embodiment, a plurality of photo diodes (PDs) (173) may be arranged between the outside of the first region and the inside of the second region. For example, each of the plurality of PDs (173) may receive light emitted by the plurality of first LEDs (171) and light emitted by at least one second LED (172).

[0118] For example, each of the plurality of PDs (173) can receive (or detect) light reflected or transmitted from the user's body (e.g., finger (10)) by emitting light from the plurality of first LEDs (171).

[0119] According to an embodiment, a plurality of first LEDs (171) and a plurality of PDs (173) may constitute a PPG (plethysmography) sensor. For example, each of the plurality of first LEDs (171) may emit light of a different (or different) wavelength (e.g., light of a green wavelength, light of a red wavelength, light of an infrared wavelength), and the plurality of PDs (173) may receive light emitted by the plurality of first LEDs (171) and reflected or transmitted onto a body (e.g., a wrist, a finger (10)) of a user that is in contact with the sensor (170). According to an embodiment, the processor (110) may identify the intensity of light reflected onto the body of the user (or absorbance (intensity of light absorbed into the body of the user)) based on the intensity of light received by the plurality of PDs (173).

[0120] According to an embodiment, when light of different wavelengths emitted by a plurality of first LEDs (171) is reflected or transmitted onto the user's body and detected (or received) by a plurality of PDs (173), the processor (110) measures an absorption spectrum from the light detected by the plurality of PDs (173), and can identify the concentration of carotenoids, which are antioxidant components, based on the absorption spectrum.

[0121] According to an embodiment, the processor (110) may identify whether the user's body (e.g., finger (10)) completely covers the sensor (170) before controlling the plurality of first LEDs (171) to light up to identify the concentration of the antioxidant component with higher reliability.

[0122] For example, the processor (110) can control at least one second LED (172) to emit light. When the light emitted by the at least one second LED (172) is reflected or transmitted onto the user's body and detected (or received) by the plurality of PDs (173), the plurality of PDs (173) can obtain sensing data (hereinafter, first sensing data). The processor (110) can identify whether the user's body covers the sensor (170) based on the first sensing data.

[0123] FIG. 5 is a drawing for explaining a sensor according to an embodiment of the present disclosure.

[0124] According to an embodiment, the sensor (170) may include a plurality of first LEDs (171) arranged within the first region (1).

[0125] The sensor (170) may include at least one second LED (172) positioned between the exterior of the first region (1) and the interior of the second region (2).

[0126] For example, at least one second LED (172) includes a second-first LED (172-1) and a second-second LED (172-2), and each of the second-first LED (172-1) and the second-second LED (172-2) can be positioned between the outside of the first region (1) and the inside of the second region (2).

[0127] The sensor (170) may include a plurality of PDs (173) arranged between the outside of the first region (1) and the inside of the second region (2). For example, the plurality of PDs (173) may include a first PD (173-1) and a second PD (173-2), and the first PD (173-1) and the second PD (173-2) may be arranged substantially symmetrically with respect to the center of the first region (1) and / or the second region (2).

[0128] According to an embodiment, the first PD (173-1) may be positioned adjacent to the second-first LED (172-1), and the second PD (173-2) may be positioned adjacent to the second-second LED (172-2). For example, the first PD (173-1) may be positioned within a range of 6 mm from the second-first LED (172-1), and the second PD (173-2) may be positioned within a range of 6 mm from the second-second LED (172-2).

[0129] However, this is an example for convenience of explanation, and to prevent crosstalk from occurring in which the light emitted by the 2-2 LED (172-2) is primarily received by the 1st PD (173-1) or the light emitted by the 2-1 LED (172-1) is primarily received by the 2nd PD (173-2), the 1st PD (173-1) may be placed adjacent to the 2-1 LED (172-1), and the 2nd PD (173-2) may be placed adjacent to the 2-2 LED (172-2). For example, the 1st PD (173-1) and the 2nd PD (173-2) may be placed such that the 1st PD (173-1) primarily receives the light emitted by the 2-1 LED (172-1), and the 2nd PD (173-2) primarily receives the light emitted by the 2-2 LED (172-2).

[0130] According to an embodiment, the processor (110) may control at least one second LED (172) to emit light. A portion of the light emitted by the at least one second LED (172) may be reflected onto the user's body in contact with the sensor (170) and received by at least one of the first PD (173-1) or the second PD (173-2), and the remainder of the light emitted by the at least one second LED (172) may be absorbed by the user's body.

[0131] According to an embodiment, the processor (110) can identify whether the user's finger (10) covers an area corresponding to the first PD (173-1) among the sensors (170) based on the intensity of light absorbed by the first PD (173-1) (or light received by the first PD (173-1)) from the light emitted by at least one second LED (172).

[0132] For example, the processor (110) can identify whether the finger (10) covers an area corresponding to the first PD (173-1) based on the intensity of light absorbed by the first PD (173-1) positioned adjacent to the second LED (172-1) from the light emitted by the second LED (172-1).

[0133] According to an embodiment, the first sensing data may include the intensity of light received by the first PD (173-1) (hereinafter, the intensity of the first reflected light or the first absorbance).

[0134] According to an embodiment, the intensity of the first reflected light includes the intensity of the light emitted by the 2-1 LED (172-1) reflected by the user's body and absorbed by the first PD (173-1). The intensity of the first reflected light increases as the user's body appropriately covers the area corresponding to the first PD (173-1), and the intensity of the first reflected light may decrease as the user's body does not appropriately cover the area corresponding to the first PD (173-1).

[0135] In some embodiments, the intensity of the first reflected light may be inversely proportional to the first absorbance.

[0136] According to an embodiment, the first absorbance is a value representing the degree to which the user's body covering the sensor (170) absorbs the light emitted by the 2-1 LED (172-1). The value of the first absorbance increases as the user's body does not adequately cover the sensor (170), and the value of the first absorbance may decrease as the user's body adequately covers the sensor (170).

[0137] According to an embodiment, the processor (110) can identify that the user's body does not cover an area corresponding to the first PD (173-1) that obtained the first absorbance if the first absorbance is greater than or equal to a threshold, and can identify that the user's body covers an area corresponding to the first PD (173-1) if the first absorbance is less than the threshold.

[0138] According to an embodiment, if the processor (110) identifies that the user's body does not cover an area corresponding to the first PD (173-1), the processor (110) may provide feedback to cover the first PD (173-1) after receiving the feedback.

[0139] According to an embodiment, the processor (110) can identify whether the finger (10) covers an area corresponding to the second PD (173-2) among the sensors (170) based on the intensity of light absorbed by the second PD (173-2) (or light received by the first PD (173-1)) from the light emitted by at least one second LED (172).

[0140] For example, the processor (110) can identify whether the finger (10) covers an area corresponding to the second PD (173-2) based on the intensity of light absorbed by the second PD (173-2) positioned adjacent to the second LED (172-2) from the light emitted by the second LED (172-2).

[0141] According to an embodiment, the first sensing data may include the intensity of light received by the second PD (173-2) (hereinafter, the intensity of the second reflected light or the second absorbance).

[0142] Depending on the embodiment, the intensity of the second reflected light may be inversely proportional to the second absorbance.

[0143] According to an embodiment, the processor (110) can identify that the user's body does not cover an area corresponding to the second PD (173-2) that acquired the second absorbance if the second absorbance is greater than or equal to a threshold, and can identify that the user's body covers an area corresponding to the second PD (173-2) if the second absorbance is less than the threshold.

[0144] According to an embodiment, if the processor (110) identifies that the user's body does not cover an area corresponding to the second PD (173-2), it may provide feedback and then provide feedback to cover the second PD (173-2).

[0145] According to an embodiment of the present disclosure, when a user command for controlling the electronic device (100) to measure biometric information is received, the processor (110) guides the user's body (e.g., the user's finger (10)) to cover the sensor (170) and controls at least one second LED (172) to emit light. For a detailed description thereof, refer to FIG. 6.

[0146] FIG. 6 is a drawing for explaining a UI provided by an electronic device according to a user command for controlling measurement of biometric information according to an embodiment of the present disclosure.

[0147] Referring to FIG. 6, when a user command is received to control the electronic device (100) to measure the user's biometric information, for example, the concentration of an antioxidant component, the processor (110) can display a UI that guides (or induces) contact between the sensor (170) and the user's body.

[0148] For example, since antioxidant components are mainly accumulated in the fingers (10) and palms rather than the wrists, they can be measured with relatively higher reliability when the sensor (170) is in contact with the fingers (10) rather than when the sensor (170) is in contact with the wrist.

[0149] Since the finger (10) has a relatively smaller area than the wrist, the processor (110) according to the embodiment may display UI information (e.g., text and / or image) that guides an appropriate position of the finger (10) so that the finger (10) can cover the sensor. For example, the processor (110) may sequentially display a UI that guides the rotation of the electronic device (100) so that the sensor (170) faces upward and a UI that guides the position of the finger (10) so that the finger (10) completely covers the sensor (170).

[0150] For example, when a user command to control the electronic device (100) to measure biometric information is received, the processor (110) may disable the touch detection circuit of the display (140) for a preset period of time or ignore the user's touch.

[0151] For example, after a user command to control the electronic device (100) to measure biometric information (e.g., concentration of an antioxidant component) is received, an unintended touch may be input according to the user's action to rotate the electronic device (100) for a preset period of time.

[0152] According to an embodiment, when a user command is received, the processor (110) may disable the touch detection circuit for a preset period of time or ignore the user's touch so as not to perform an action corresponding to a touch that the user did not intend.

[0153] According to an embodiment, when a user command is received, the processor (110) can control at least one second LED (172) to light up after a preset time has elapsed. This will be described in detail with reference to FIG. 7.

[0154] FIG. 7 is a drawing for explaining contact between a user's body and a sensor according to an embodiment of the present disclosure.

[0155] Referring to FIG. 7, when a user command for controlling measurement of biometric information is received, the processor (110) can disable touch detection, such as ignoring the user's touch for a preset period of time or disabling the touch detection circuit.

[0156] According to an embodiment, the processor (110) can control at least one second LED (172) to light up after a preset time has elapsed, thereby identifying whether the user's body (e.g., finger (10)) covers the sensor (170).

[0157] For example, the processor (110) can identify whether the finger (10) covers an area corresponding to the first PD (173-1) and an area corresponding to the second PD (173-2), respectively, based on first sensing data including a first absorbance obtained by the first PD (173-1) receiving a portion of the light emitted by the second-1 LED (172-1) and a second absorbance obtained by the second PD (173-2) receiving a portion of the light emitted by the second-2 LED (172-2).

[0158] According to an embodiment, when the processor (110) identifies that the finger (10) covers an area corresponding to the first PD (173-1) and an area corresponding to the second PD (173-2), respectively, the processor (110) can control the plurality of first LEDs (171) to emit light of different wavelengths to obtain biometric information.

[0159] According to an embodiment, when the first PD (173-1) and the second PD (173-2) receive light of different wavelengths emitted by the plurality of first LEDs (171) and obtain second sensing data, the processor (110) can measure the user's biometric information based on the second sensing data.

[0160] For example, in order to reproducibly measure antioxidant components unevenly accumulated on the skin, a plurality of first LEDs (171) may be arranged inside a first region (1) including the center of the sensor (170), and a first PD (173-1) and a second PD (173-2) may be arranged substantially symmetrically with respect to the center.

[0161] The plurality of first LEDs (171) and the first PD (173-1) are spaced apart from each other appropriately to secure an optical path length, and the plurality of first LEDs (171) and the second PD (173-2) are also spaced apart from each other appropriately to secure an optical path length.

[0162] According to an embodiment, the electronic device (100) may include a motion sensor. For example, the motion sensor may detect movement of the electronic device (100).

[0163] For example, the motion sensor may include an infrared (IR) sensor, an ultrasonic sensor, an optical sensor, or a gyroscope sensor.

[0164] According to an embodiment, when the processor (110) detects rotation of the electronic device (100) such that the rear side (e.g., 210B in FIG. 3B) of the electronic device (100) faces upward through a motion sensor, the processor (110) may control at least one second LED (172) to light up after a preset time has elapsed.

[0165] For example, the preset time may include the time (e.g., 5 sec) required for the user's body (e.g., finger (10)) to move to cover the sensor (170).

[0166] According to an embodiment, the processor (110) controls at least one second LED (172) to emit light to identify whether the user's body covers the sensor (170) after a preset time has elapsed, and after the at least one second LED (172) emits light, the touch detection of the display (140) can be disabled while the plurality of PDs (173) receive light and acquire first sensing data.

[0167] According to an embodiment, the processor (110) may acquire first sensing data after a preset time has elapsed, and if the user's body is identified as covering the sensor (170) based on the first sensing data, the processor may display a UI screen indicating the remaining time until measurement of biometric information, or provide a sound notification and / or vibration notification.

[0168] According to an embodiment, when the processor (110) identifies that the user's body covers the sensor (170) based on the first sensing data, the processor (110) controls the plurality of first LEDs (171) to emit light of different wavelengths, and after the plurality of first LEDs (171) emit light, the plurality of PDs (173) receive the light to obtain the second sensing data.

[0169] The processor (110) can measure biometric information based on the second sensing data.

[0170] FIG. 8 is a drawing illustrating an example in which a user's body does not properly cover a sensor according to an embodiment of the present disclosure.

[0171] Referring to FIG. 8, the sensor (170) includes a 2-1 LED (172-1) and a 2-2 LED (172-2) arranged between the outside of the first region (1) and the inside of the second region (2), and may include a 1st PD (173-1) arranged adjacent to the 2-1 LED (172-1) and a 2nd PD (173-2) arranged adjacent to the 2-2 LED (172-2).

[0172] According to an embodiment, the first PD (173-1) and the second PD (173-2) may be electrically isolated.

[0173] In some embodiments, a case where the contact between the user's finger (10) and the sensor (170) is poor (or the finger (10) does not cover the sensor (170)) may include a case where the finger (10) covers the 2-1 LED (172-1) and the 1st PD (173-1) and does not completely cover the 2-2 LED (172-2) and the 2nd PD (173-2).

[0174] This is an example and is not limited thereto. For example, it may include a case where the finger (10) covers the 2-2 LED (172-2) and the 2nd PD (173-2), but does not completely cover the 2-1 LED (172-1) and the 1st PD (173-1).

[0175] According to an embodiment, the processor (110) may identify whether the finger (10) covers all of the sensor (170), i.e., the 2-1 LED (172-1), the 2-2 LED (172-2), the 1st PD (173-1) and the 2nd PD (173-2) included in the sensor (170), and may provide feedback if it does not cover one of the components of the sensor (170) (e.g., the 1st PD (173-1) or the 2nd PD (173-2)).

[0176] For example, if the first absorbance obtained by the first PD (173-1) receiving a portion of the light emitted by the second-1 LED (172-1) is greater than a threshold, the processor (110) can identify that the finger (10) does not cover the first PD (173-1). The processor (110) can provide feedback to cover the first PD (173-1).

[0177] For example, the processor (110) may output, as feedback, a sound (e.g., a voice utterance corresponding to 'Move your finger a little more to the upper right') that guides the movement of the finger (10), an image (e.g., an image of a finger moving to the upper right), or a vibration indicating poor contact between the sensor (170) and the user's body, based on the position (e.g., upper right) of the first PD (173-1) on the sensor (170).

[0178] For example, if the second absorbance obtained by the second PD (173-2) receiving a portion of the light emitted by the second LED (172-2) is greater than a threshold, the processor (110) can identify that the finger (10) does not cover the second PD (173-2). The processor (110) can provide feedback to cover the second PD (173-2).

[0179] For example, the processor (110) may output a sound (e.g., a voice utterance corresponding to 'Move your finger a little more to the lower left') that guides the movement of the finger (10) based on the position (e.g., the lower left) of the second PD (173-2) on the sensor (170), an image (e.g., an image of a finger moving to the lower left), or a vibration indicating poor contact between the sensor (170) and the user's body as feedback.

[0180] In the above-described example, it is assumed that at least one second LED (172) includes a second-first LED (172-1) and a second-second LED (172-2), and that a plurality of PDs (173) include a first PD (173-1) adjacent to the second-first LED (172-1) and a second PD (173-2) adjacent to the second-second LED (172-2), but it is not limited thereto.

[0181] For example, the sensor (170) may further include at least one second LED (172) disposed between the outside of the first region (1) and the inside of the second region (2), a second-third LED, a second-fourth LED, and the plurality of PDs (173) may further include a third PD, a fourth PD.

[0182] FIG. 9 is a drawing for explaining a case where a user's body does not properly cover a sensor according to an embodiment of the present disclosure.

[0183] Referring to FIG. 9, the sensor (170) includes a 2-1 LED (172-1) and a 2-2 LED (172-2) arranged between the outside of the 1st region (1) and the inside of the 2nd region (2), and may include a 1st PD (173-1) and a 3rd PD (173-3) arranged adjacent to the 2-1 LED (172-1), and a 2nd PD (173-2) and a 4th PD (173-4) arranged adjacent to the 2-2 LED (172-2).

[0184] Before the plurality of first LEDs (171) emit light, at least one second LED (172) emits light under the control of the processor (110), and the processor (110) can identify whether the user's finger (10) covers the sensor (170) based on the first absorbance acquired by the first PD (173-1), the second absorbance acquired by the second PD (173-2), the third absorbance acquired by the third PD (173-3), and the fourth absorbance acquired by the fourth PD (173-4).

[0185] For example, a case where the contact between the user's finger (10) and the sensor (170) is poor (or, a case where the finger (10) does not cover the sensor (170)) may include a case where the finger (10) does not cover at least one of the first PD (173-1) to the fourth PD (172-4).

[0186] For example, referring to FIG. 9, if the first absorbance acquired by the first PD (173-1) is less than a threshold, and the second absorbance acquired by the second PD (173-2), the third absorbance acquired by the third PD (173-3), and the fourth absorbance acquired by the fourth PD (173-4) are each equal to or greater than a threshold, the processor (110) can identify that the finger (10) covers an area corresponding to the first PD (173-1), but does not cover areas corresponding to the second PD (173-2), the third PD (172-3), and the fourth PD (173-4).

[0187] According to an embodiment, the processor (110) may output a sound (e.g., 'Move your finger a little more to the left.'), an image (e.g., an image of a finger moving to the left) or a vibration indicating poor contact between the sensor (170) and the user's body as feedback to guide the movement of the finger (10) so that the finger (10) covers an area corresponding to each of the second PD (173-2), the third PD (172-3), and the fourth PD (173-4).

[0188] For example, referring to FIG. 9, if the second absorbance acquired by the second PD (173-2) is less than a threshold, and the first absorbance acquired by the first PD (173-1), the third absorbance acquired by the third PD (173-3), and the fourth absorbance acquired by the fourth PD (173-4) are each equal to or greater than a threshold, the processor (110) can identify that the finger (10) covers an area corresponding to the second PD (173-2), but does not cover areas corresponding to each of the first PD (173-1), the third PD (173-3), and the fourth PD (173-4).

[0189] According to an embodiment, the processor (110) may output a sound (e.g., a voice utterance corresponding to 'Move your finger a little more to the upper right.') or an image (e.g., an image of a finger moving to the upper right) or a vibration indicating poor contact between the sensor (170) and the user's body as feedback to guide the movement of the finger (10) so that the finger (10) covers an area corresponding to each of the first PD (173-1), the third PD (173-3), and the fourth PD (173-4).

[0190] FIG. 10 is a graph for explaining first sensing data acquired through multiple PDs (173) when a user's body does not cover the sensor according to an embodiment of the present disclosure.

[0191] Referring to Fig. 10, when a finger (10) completely covers a plurality of PDs (173) included in a sensor (170), the intensity of the reflected light acquired by each of the plurality of PDs (173) can be assumed as a reference value. Here, in Fig. 10, the reference value is assumed to be '1' for convenience of explanation, but is not limited thereto.

[0192] CASE 1 and CASE 2 of FIG. 10 assume a case where the user's finger (10) does not cover the first PD (173-1) among the multiple PDs (173), but covers the second PD (173-2).

[0193] According to an embodiment, the plurality of first LEDs (171) may include a 1-1 LED, a 1-2 LED, a 1-3 LED, and a 1-4 LED. For example, the 1-1 LED, the 1-2 LED, the 1-3 LED, and the 1-4 LED may each emit light of different wavelengths. However, this is an example for convenience of explanation and the present invention is not limited thereto.

[0194] For example, when comparing CASE 1 and CASE 2, the intensity of the first reflected light obtained by the first PD (173-1) receiving a portion of the light emitted by the 1-4 LEDs included in the plurality of first LEDs (171) is inconsistently higher than the reference value in CASE 1 and lower than the reference value in CASE 2. Alternatively, the intensity of the first reflected light obtained by the first PD (173-1) receiving a portion of the light emitted by the 1-1 LEDs included in the plurality of first LEDs (171) is higher than the reference value.

[0195] According to an embodiment, the processor (110) cannot identify whether the finger (10) covers the first PD (173-1) based on the intensity of light (e.g., intensity of first reflected light or first absorbance) received by the first PD (173-1) by the plurality of first LEDs (171) arranged in different areas (i.e., inside the first area (1)) from the plurality of PDs (173) due to crosstalk.

[0196] Comparing CASE 1 and CASE 2, the intensity of the first reflected light obtained by the first PD (173-1) receiving a portion of the light emitted by the second-first LED (172-1) adjacent to the first PD (173-1) among at least one second LED (172) arranged between the outside of the first region (1) and the inside of the second region (2) is consistently less than the reference value in each of CASE 1 and CASE 2.

[0197] According to an embodiment, the processor (110) may identify whether the finger (10) covers the first PD (173-1) based on the intensity of light (e.g., intensity of first reflected light or first absorbance) received by the first PD (173-1) by emitting light from at least one second LED (172) adjacent to the first PD (173-1) among the plurality of PDs (173) arranged in the same area (i.e., between the outside of the first area (1) and the inside of the second area (2)).

[0198] For example, if the intensity of the first reflected light obtained by the first PD (173-1) receiving a portion of the light emitted by the second-1 LED (172-1) is less than a reference value, the processor (110) can identify that the finger (10) does not cover the first PD (173-1).

[0199] CASE 3 and CASE 4 of FIG. 10 assume a case where the user's finger (10) does not cover the second PD (173-2) among the multiple PDs (173), but covers the first PD (173-1).

[0200] For example, the intensity of the second reflected light obtained by the second PD (173-2) receiving a portion of the light emitted by the 1-1 LED included in the plurality of first LEDs (171) is greater than or equal to the reference value. Alternatively, when comparing CASE 3 and CASE 4, the intensity of the second reflected light obtained by the second PD (173-2) receiving a portion of the light emitted by the 1-4 LED included in the plurality of first LEDs (171) is less than the reference value in CASE 3, and is adjacent to the reference value in CASE 4, so there is no consistency.

[0201] According to an embodiment, the processor (110) cannot identify whether the finger (10) covers the second PD (173-2) based on the intensity of light (e.g., intensity of second reflected light or second absorbance) received by the second PD (173-2) by the plurality of first LEDs (171) arranged in different areas (i.e., inside the first area (1)) from the plurality of PDs (173) due to crosstalk.

[0202] Comparing CASE 3 and CASE 4, the intensity of the second reflected light obtained by the second PD (173-2) receiving a portion of the light emitted by the second-second LED (172-2) adjacent to the second PD (173-2) among at least one second LED (172) arranged between the outside of the first region (1) and the inside of the second region (2) is consistently less than the reference value in each of CASE 3 and CASE 4.

[0203] According to an embodiment, the processor (110) may identify whether the finger (10) covers the second PD (173-2) based on the intensity of light (e.g., intensity of second reflected light or second absorbance) received by the second PD (173-2) by emitting light from at least one second LED (172) adjacent to the second PD (173-2) among the plurality of PDs (173) arranged in the same area (i.e., between the outside of the first area (1) and the inside of the second area (2)).

[0204] For example, if the intensity of the second reflected light obtained by the second PD (173-2) receiving a portion of the light emitted by the second LED (172-2) is less than a reference value, the processor (110) can identify that the finger (10) does not cover the second PD (173-2).

[0205] FIG. 11 is a graph for explaining the intensity information of reflected light according to contact between a user's body and a sensor according to an embodiment of the present disclosure.

[0206] As illustrated in FIG. 9, according to an embodiment, at least one second LED (172) may include a second-first LED (172-1) arranged in a first direction (e.g., 12 o'clock direction), and a second-second LED (172-2) arranged in a second direction (e.g., 6 o'clock direction) symmetrical to the first direction with respect to the center. According to an embodiment, each of the first PD (173-1) and the third PD (173-3) may be arranged adjacent to the second-first LED (172-1), and each of the second PD (173-2) and the fourth PD (173-4) may be arranged adjacent to the second-second LED (172-2).

[0207] In the graph of FIG. 11, the x-axis represents the first PD (173-1) in an open state, the third PD (173-3) in an open state, the second PD (173-2) in an open state, the fourth PD (173-4) in an open state, all of the plurality of PDs (173) in an open state, and all of the plurality of PDs (173) in a closed state (e.g., a state in which a finger (10) covers the plurality of PDs (173), and the y-axis can represent the intensity of reflected light obtained by each of the plurality of PDs (173) in each state.

[0208] According to an embodiment, when the first PD (173-1) is in an open state (e.g., a state in which the finger (10) does not cover only the first PD (173-1), and the second-first LED (172-1) adjacent to the first PD (173-1) emits light, the intensity of the first reflected light obtained by the first PD (173-1) receiving a portion of the light emitted by the second-first LED (172-1) is less than a threshold, and the intensity of the second reflected light obtained by the second PD (173-2) receiving light, the intensity of the third reflected light obtained by the third PD (173-3) receiving light, and the intensity of the fourth reflected light obtained by the fourth PD (173-4) receiving light are each equal to or greater than a threshold, so that the processor (110) can identify that the finger (10) does not cover the first PD (173-1).

[0209] According to an embodiment, when the third PD (173-3) is in an open state (e.g., a state in which the finger (10) does not cover only the third PD (173-3), and the second-first LED (172-1) adjacent to the third PD (173-3) emits light, the intensity of the third reflected light obtained by the third PD (173-3) receiving a portion of the light emitted by the second-first LED (172-1) is less than a threshold, and the intensity of the first reflected light obtained by the first PD (173-1) receiving light, the intensity of the second reflected light obtained by the second PD (173-2) receiving light, and the intensity of the fourth reflected light obtained by the fourth PD (173-4) receiving light are each equal to or greater than a threshold, so that the processor (110) can identify that the finger (10) does not cover the third PD (173-3).

[0210] According to an embodiment, when the second PD (173-2) is in an open state (e.g., a state in which the finger (10) does not cover only the second PD (173-2), and the second-second LED (172-2) adjacent to the second PD (173-2) emits light, the intensity of the second reflected light obtained by the second PD (173-2) receiving a portion of the light emitted by the second-second LED (172-2) is less than a threshold, and the intensity of the first reflected light obtained by the first PD (173-1) receiving light, the intensity of the third reflected light obtained by the third PD (173-3) receiving light, and the intensity of the fourth reflected light obtained by the fourth PD (173-4) receiving light are each equal to or greater than a threshold, so that the processor (110) can identify that the finger (10) does not cover the second PD (173-2).

[0211] According to an embodiment, when the 4th PD (173-4) is in an open state (e.g., a state in which the finger (10) does not cover only the 4th PD (173-4), and the 2-2 LED (172-2) adjacent to the 4th PD (173-4) emits light, the intensity of the 4th reflected light obtained by the 4th PD (173-4) receiving a portion of the light emitted by the 2-2 LED (172-2) is less than a threshold, and the intensity of the 1st reflected light obtained by the 1st PD (173-1) receiving light, the intensity of the 2nd reflected light obtained by the 2nd PD (173-2) receiving light, and the intensity of the 3rd reflected light obtained by the 3rd PD (173-3) receiving light are each equal to or greater than a threshold, so the processor (110) can identify that the finger (10) does not cover the 4th PD (173-4).

[0212] FIG. 12 is a graph for explaining the absorbance included in the first sensing data according to an embodiment of the present disclosure.

[0213] In the graph of FIG. 12, the x-axis represents a state in which all of the plurality of PDs (173) are closed (e.g., a state in which the finger (10) covers the plurality of PDs (173)) (normal in FIG. 12), the first PD (173-1) is in an open state, the second PD (173-2) is in an open state, the third PD (173-3) is in an open state, the fourth PD (173-4) is in an open state, the first PD (173-1) and the second PD (173-2) are in an open state, the second PD (173-2) and the third PD (173-3) are in an open state, the third PD (173-3) and the fourth PD (173-4) are in an open state, the first PD (173-1), the second PD (173-2) and the third PD (173-3) are in an open state, and all of the plurality of PDs (173) are in an open state, and the y-axis represents a state in which multiple PDs (173) are in each state. Each of the PDs (173) can display the absorbance obtained by receiving light.

[0214] In FIG. 12, for convenience of explanation, a 2-1 LED (172-1) arranged in a first direction of the sensor (170) and a 2-2 LED (172-2) arranged in a second direction symmetrical to the first direction with respect to the center of the sensor (170) may be included.

[0215] According to an embodiment, each of the second-first LED (172-1) and the second-second LED (172-2) may be positioned between the outside of a first circular region (1) including a center and the inside of a second circular region (2) larger than the first circular region (1). According to an embodiment, the first circular region (1) and the second circular region (2) may be concentric.

[0216] According to an embodiment, among the plurality of PDs (173), the first PD (173-1) and the second PD (173-2) may be arranged adjacent to the 2-1 LED (172-1), and the third PD (173-3) and the fourth PD (173-4) may be arranged adjacent to the 2-2 LED (172-2).

[0217] According to an embodiment, the first PD (173-1) and the fourth PD (173-4) may be arranged substantially symmetrically with respect to the center, and the second PD (173-2) and the fourth PD (173-4) may be arranged substantially symmetrically with respect to the center.

[0218] FIG. 12 is a graph for explaining first sensing data acquired through multiple PDs (173) in a case where the user's body does not cover the sensor or covers the sensor according to an embodiment.

[0219] Referring to FIG. 12, when the finger (10) completely covers the plurality of PDs (173) included in the sensor (170) (normal), the processor (110) may set a threshold based on the intensity of light absorbed by the user's body (hereinafter, absorbance) based on the intensity of light received by the plurality of PDs (173) of a portion of the light emitted by at least one second LED (172). Here, in FIG. 12, the threshold is assumed to be '0' for convenience of explanation, but is not limited thereto. Depending on the embodiment, the intensity of reflected light and absorbance may be inversely proportional.

[0220] According to an embodiment, when the user's finger (10) does not cover the first PD (173-1) among the plurality of PDs (173) but covers the remaining PDs (173-2, 173-3, 173-4), a first absorbance obtained by receiving a portion of the light emitted by the second-first LED (172-1) included in the first sensing data by the first PD (173-1) adjacent to the second-first LED (172-1) exceeds a threshold (e.g., '0').

[0221] According to an embodiment, the processor (110) determines that the first absorbance obtained by the first PD (173-1) adjacent to the second-1 LED (172-1) receiving a portion of the light emitted by the second-1 LED (172-1) is greater than or equal to a threshold, the second absorbance obtained by the second PD (173-2) adjacent to the second-1 LED (172-1) receiving a portion of the light emitted by the second-1 LED (172-1), the third absorbance obtained by the third PD (173-3) adjacent to the second-2 LED (172-2) receiving a portion of the light emitted by the second-2 LED (172-2), and the fourth absorbance obtained by the fourth PD (173-4) adjacent to the second-2 LED (172-2) receiving a portion of the light emitted by the second-2 LED (172-2) are less than a threshold, if the user It is possible to identify that the finger (10) does not cover the first PD (173-1) but covers the remaining PDs (173-2, 173-3, 173-4), and provide feedback so that the user's finger (10) covers the first PD (173-1).

[0222] According to an embodiment, if the user's finger (10) does not cover any one of the plurality of PDs (173), the processor (110) can identify any one PD not covered by the finger (10) based on the absorbance acquired by each of the plurality of PDs (173) in the same manner as the above-described example. For example, if the finger (10) does not cover the fourth PD (173-4) but covers the remaining PDs (173-1, 173-2, 173-3), a fourth absorbance acquired by the fourth PD (173-4) adjacent to the second-second LED (172-2) receiving a portion of the light emitted by the second-second LED (172-2) included in the first sensing data exceeds a threshold (e.g., '0').

[0223] According to an embodiment, the processor (110) determines that the fourth absorbance obtained by the fourth PD (173-4) adjacent to the second-second LED (172-2) receiving a portion of the light emitted by the second-second LED (172-2) is greater than or equal to a threshold, the first absorbance obtained by the first PD (173-1) adjacent to the second-second LED (172-1) receiving a portion of the light emitted by the second-first LED (172-1), the second absorbance obtained by the second PD (173-2) adjacent to the second-first LED (172-1) receiving a portion of the light emitted by the second-first LED (172-1), and the third absorbance obtained by the third PD (173-3) adjacent to the second-second LED (172-2) receiving a portion of the light emitted by the second-second LED (172-2) are less than a threshold, if the user It is possible to identify that the finger (10) does not cover the fourth PD (173-4) but covers the remaining PDs (173-1, 173-2, 173-3), and provide feedback so that the user's finger (10) covers the fourth PD (173-4).

[0224] According to an embodiment, if the finger (10) does not cover the first PD (173-1), the second PD (173-2) and the third PD (173-3), and only covers the fourth PD (173-4), the first absorbance obtained by the first PD (173-1) adjacent to the second-first LED (172-1) receiving a portion of the light emitted by the second-first LED (172-1), the second absorbance obtained by the second PD (173-2) adjacent to the second-first LED (172-1) receiving a portion of the light emitted by the second-first LED (172-1), and the third absorbance obtained by the third PD (173-3) adjacent to the second-second LED (172-2) receiving a portion of the light emitted by the second-second LED (172-2) are equal to or greater than a threshold value, and the second-second The fourth absorbance obtained by receiving a portion of the light emitted by the LED (172-2) by the fourth PD (173-4) adjacent to the second-second LED (172-2) is below the threshold.

[0225] According to an embodiment, the processor (110) may identify that the finger (10) does not cover the first PD (173-1), the second PD (173-2), and the third PD (173-3), but only covers the fourth PD (173-4), based on the first to fourth absorbances included in the first sensing data, and may provide feedback so that the user's finger (10) covers the first PD (173-1), the second PD (173-2), and the third PD (173-3).

[0226] According to various embodiments of the present disclosure, when at least one second LED (172) emits light having a wavelength of about 660 nm and does not cover any one of the first PD (173-1) to the fourth PD (173-4), the processor (110) identifies (or determines) a PD among a plurality of PDs (173) that is not covered by a body part of the user (e.g., a finger (10)) based on the first sensing data (e.g., absorbance) as follows.

[0227] Absorbance (Absorption) Judgment PassPD1PD2PD3PD4RemActualPass3900010PD14760000PD29071000PD36007310PD44000760Rem4111330

[0228] In Table 1, Pass includes a state in which each of the plurality of PDs (173) is properly covered by a body part, and Rem (remote) may include a state in which the body part is located close to the sensor (170) without contacting the sensor (170) (e.g., a state in which the plurality of PDs (173) are not properly covered by a body part).

[0229] Based on Table 1, the experimental results are summarized as follows.

[0230] Judgment Positive Negative Actual Positive 97.5% 2.5% Negative 7.5% 92.5%

[0231] For example, the processor (110) may determine that a part of the user's body properly covers the sensor (170) 97.5% of the time (actual: positive - judgment: positive), and may determine that a part of the user's body does not cover a part of the sensor (170) 92.5% of the time (actual: negative - judgment: negative).

[0232] According to various embodiments of the present disclosure, when at least one second LED (172) emits light having a wavelength of about 660 nm and does not cover any one of the first PD (173-1) to the fourth PD (173-4), the processor (110) identifies (or determines) a PD among a plurality of PDs (173) that is not covered by a part of the user's body (e.g., a finger (10)) based on the intensity of the reflected light. The experimental results are as shown in Table 3 below.

[0233] Raw Intensity of Reflected Light PassPD1PD2PD3PD4RemActualPass3600220PD1105316100PD2703520180PD3818183330PD440020560Rem4011340

[0234] Based on Table 3, the experimental results are summarized as follows.

[0235] Judgment Positive Negative Actual Positive 90.0% 10.0% Negative 9.2% 90.8%

[0236] For example, the processor (110) may determine that a part of the user's body properly covers the sensor (170) 90.0% of the time (actual: positive - judgment: positive), and may determine that a part of the user's body does not cover a part of the sensor (170) 90.8% of the time (actual: negative - judgment: negative).

[0237] According to various embodiments of the present disclosure, when at least one second LED (172) emits light having a wavelength of about 940 nm and does not cover any one of the first PD (173-1) to the fourth PD (173-4), the processor (110) identifies (or determines) a PD among a plurality of PDs (173) that is not covered by a part of the user's body (e.g., a finger (10)) based on the first sensing data (e.g., absorbance) as follows.

[0238] Absorbance (Absorption) Judgment PassPD1PD2PD3PD4RemActualPass4000000PD10800000PD22078000PD32007800PD41000790Rem2331230

[0239] In Table 5, Pass includes a state in which each of the plurality of PDs (173) is properly covered by a body part, and Rem (remote) may include a state in which the body part is located close to the sensor (170) without contacting the sensor (170) (e.g., a state in which the plurality of PDs (173) are not properly covered by a body part).

[0240] Based on Table 5, the experimental results are summarized as follows.

[0241] Verdict: PositiveNegativeActual: Positive100%0.0%Negative1.9%98.1%

[0242] For example, when the processor (110) determines that a part of the user's body properly covers the sensor (170), the case in which it is determined that it is properly covered (actual: positive - judgment: positive) may be 100%, and when the part of the user's body does not cover a part of the sensor (170), the case in which it is determined that it is not covered (actual: negative - judgment: negative) may be 98.1%.

[0243] According to various embodiments of the present disclosure, when at least one second LED (172) emits light having a wavelength of about 940 nm and does not cover any one of the first PD (173-1) to the fourth PD (173-4), the processor (110) identifies (or determines) a PD among a plurality of PDs (173) that is not covered by a part of the user's body (e.g., a finger (10)) based on the intensity of the reflected light. The experimental results are as shown in Table 7 below.

[0244] Raw Intensity of Reflected Light PassPD1PD2PD3PD4RemActualPass3800020PD116019000PD2004020200PD3220203800PD410020590Rem2370010

[0245] Based on Table 7, the experimental results are summarized as follows.

[0246] Judgment Positive Negative Actual Positive 95.0% 5.0% Negative 1.7% 98.3%

[0247] For example, the processor (110) may determine that a part of the user's body properly covers the sensor (170) 95.0% of the time (actual: positive - judgment: positive), and may determine that a part of the user's body does not cover a part of the sensor (170) 98.3% of the time (actual: negative - judgment: negative).

[0248] According to various embodiments of the present disclosure, when at least one second LED (172) emits light combining light having a wavelength of about 660 nm and about 940 nm and does not cover any one of the first PD (173-1) to the fourth PD (173-4), the processor (110) identifies (or determines) a PD among a plurality of PDs (173) that is not covered by a part of the user's body (e.g., a finger (10)) based on the first sensing data, and the experimental results are as follows.

[0249] Absorbance (Absorption) Judgment PassPD1PD2PD3PD4RemActualPass3500230PD1303316100PD22103017120PD31818182420PD4230018390Rem80311018

[0250] Based on Table 9, the experimental results are summarized as follows.

[0251] Judgment Positive Negative Actual Positive 87.5% 12.5% ​​Negative 27.8% 72.2%

[0252] For example, the processor (110) may determine that a part of the user's body properly covers the sensor (170) 87.5% of the time (actual: positive - judgment: positive), and may determine that a part of the user's body does not cover a part of the sensor (170) 72.2% of the time (actual: negative - judgment: negative).

[0253] According to various embodiments of the present disclosure, when at least one second LED (172) emits light combining light having a wavelength of about 660 nm and about 940 nm and does not cover any one of the first PD (173-1) to the fourth PD (173-4), the processor (110) identifies (or determines) a PD among a plurality of PDs (173) that is not covered by a part of the user's body (e.g., a finger (10)) based on the intensity of the reflected light, the experimental results are as follows.

[0254] Raw Intensity of Reflected Light PassPD1PD2PD3PD4RemActualPass3600130PD115920000PD2004020200PD3020204000PD410020590Rem230010

[0255] Based on Table 11, the experimental results are summarized as follows.

[0256] Judgment Positive Negative Actual Positive 90.0% 10.0% Negative 1.1% 98.9%

[0257] For example, the processor (110) may determine that a part of the user's body properly covers the sensor (170) 90.0% of the time (actual: positive - judgment: positive), and may determine that a part of the user's body does not cover a part of the sensor (170) 98.9% of the time (actual: negative - judgment: negative).

[0258] FIG. 13 is a flowchart for explaining a control method of an electronic device according to an embodiment of the present disclosure.

[0259] In the following examples, the operations may be performed sequentially, but are not necessarily sequential. For example, the order of the operations may be changed, and at least two operations may be performed in parallel.

[0260] According to one embodiment, operations S1310 to S1390 may be understood to be performed in a processor (e.g., at least one processor (110) of FIG. 4) of an electronic device (e.g., the electronic device (100) of FIG. 4).

[0261] According to one embodiment, in a control method of an electronic device (100), when a user command for controlling the electronic device (100) to measure the user's biometric information is received in operation S1310, the electronic device (100) drives a contact detection sensor located at an outer periphery (e.g., between the outer periphery of the first region (1) and the inner periphery of the second region (2)). For example, the contact detection sensor may be configured with at least one second LED (172) and a plurality of PDs (173) located between the outer periphery of the first region (1) and the inner periphery of the second region (2).

[0262] According to an embodiment, the control method detects whether there is proper contact between the contact detection sensor and the user's body in operation S1320. For example, the electronic device (100) identifies whether the user's body covers the contact detection sensor (or sensor (170)).

[0263] According to one embodiment, in operations S1320-N, S1330, if proper contact between the contact detection sensor and the user's body is not detected (e.g., if the user's body is identified as not covering the contact detection sensor (or sensor (170)), the electronic device (100) may detect whether the first PD (173-1) is in contact with the user's body to identify whether the user's body covers the sensor (170).

[0264] For example, the electronic device (100) controls the 2-1 LED (172-1) adjacent to the 1st PD (173-1) to emit light, and based on the first absorbance obtained by the 1st PD (173-1) receiving a portion of the light emitted by the 2-1 LED (172-1), it can identify whether the user's body covers the 1st PD (173-1).

[0265] According to one embodiment, in operations S1330-Y, S1340, the electronic device (100) can detect whether the user's body is in contact with the second PD (173-2) when it is identified that the user's body is covering the first PD (173-1).

[0266] For example, the electronic device (100) controls the second-second LED (172-2) adjacent to the second PD (173-2) to emit light, and based on the second absorbance obtained by the second PD (173-2) receiving a portion of the light emitted by the second-second LED (172-2), it can identify whether the user's body covers the second PD (173-2).

[0267] According to an embodiment, in operation S1340-Y, if the electronic device (100) identifies that the user's body covers the second PD (173-2), the electronic device (100) drives the contact detection sensor in operation S1310, and in operations S1320-Y and S1390, if appropriate contact between the contact detection sensor and the user's body is detected (for example, if the user's body is identified as covering the contact detection sensor (or, sensor (170))), the electronic device (100) can drive the sensor for measuring a biosignal. According to an embodiment, in operations S1340-N and S1350, if the electronic device (100) identifies that the user's body does not cover the second PD (173-2), the electronic device (100) can transmit feedback (for example, guide UI) for improving contact between the user's body and the second PD (173-2).

[0268] According to one embodiment, in operations S1330-N, S1360, the electronic device (100) can detect whether the user's body is in contact with the second PD (173-2) if it is identified that the user's body does not cover the first PD (173-1).

[0269] According to one embodiment, in operations S1360-Y, S1370, when the electronic device (100) identifies that the user's body covers the second PD (173-2), it may transmit feedback (e.g., guide UI) to improve contact between the user's body and the first PD (173-1).

[0270] According to one embodiment, in operations S1360-N, S1380, if the electronic device (100) identifies that the user's body does not cover the first PD (173-1) and the second PD (173-2), it may transmit feedback (e.g., guide UI) to improve contact between the user's body and the first PD (173-1) and the second PD (173-2), respectively.

[0271] According to an embodiment, the control method may drive a contact detection sensor in operation S1310 after transmitting feedback in operations S1350, S1370, and S1380, and in operations S1320-Y, S1390, when appropriate contact between the contact detection sensor and the user's body is detected (for example, when the user's body is identified as covering the contact detection sensor (or sensor (170))), the electronic device (100) may drive a sensor for measuring a biosignal.

[0272] For example, the biosignal includes the concentration of an antioxidant component, and the sensor for measuring the biosignal may be composed of a plurality of first LEDs (171) arranged inside the first region (1) and a plurality of PDs (173) arranged between the outside of the first region (1) and the inside of the second region (2).

[0273] FIG. 14 is a flowchart for explaining a control method of an electronic device according to an embodiment of the present disclosure.

[0274] In the following examples, the operations may be performed sequentially, but are not necessarily sequential. For example, the order of the operations may be changed, and at least two operations may be performed in parallel.

[0275] According to one embodiment, operations S1401 to S1411 may be understood to be performed in a processor (e.g., processor (110) of FIG. 4) of an electronic device (e.g., electronic device (100) of FIG. 4).

[0276] Referring to FIG. 14, the control method of the electronic device (100) is such that, in operation S1401, when a user command for controlling the electronic device (100) to measure the user's biometric information is received, the electronic device (100) drives a contact detection sensor located on the periphery (e.g., between the outside of the first area (1) and the inside of the second area (2)).

[0277] According to one embodiment, in operations S1402-Y and S1403-Y, if the electronic device (100) identifies that the entire contact detection sensor and the user's body are not in contact, the electronic device (100) may transmit feedback (e.g., guide UI) guiding the user's body to make contact with the entire sensor (170).

[0278] According to one embodiment, in operations S1402-N and S1404-Y, if it is identified that the entire contact detection sensor and the user's body are in partial contact (e.g., the user's body covers a part of the contact detection sensor), in operation S1405, whether the user's body covers an area corresponding to the first PD (173-1) on the sensor (170) is detected to determine whether the first PD (173-1) is in contact with the user's body.

[0279] According to an embodiment, each of operations S1405 to S1410 may correspond to each of operations S1330 to S1380 illustrated in FIG. 13.

[0280] According to an embodiment, the control method may drive a contact detection sensor in operation S1401 after transmitting feedback in operations S1403, S1407, S1409, and S1410, and in operations S1402-N, S1404-N, and S1411, if it is determined that the entire contact detection sensor and the user's body are not in contact (operation S1402-N) and if it is determined that there is no area on the sensor (170) where the user's body is in contact (or an area not covered by the user's body) (operation S1404-N), the electronic device (100) may drive a sensor for measuring a biosignal (operation S1411).

[0281] FIG. 15 is a flowchart for explaining a control method of an electronic device according to an embodiment of the present disclosure.

[0282] In the following examples, the operations may be performed sequentially, but are not necessarily sequential. For example, the order of the operations may be changed, and at least two operations may be performed in parallel.

[0283] According to one embodiment, operations S1510 to S1530 may be understood to be performed in a processor (e.g., at least one processor (110) of FIG. 4) of an electronic device (e.g., the electronic device (100) of FIG. 4).

[0284] In a control method of an electronic device according to an embodiment, the electronic device includes a display disposed on the front side of the electronic device and a sensor disposed on the rear side of the electronic device, wherein the sensor includes a plurality of first LEDs disposed inside a first region including a center of the sensor and emitting light of different wavelengths, at least one second LED disposed between the outside of the first region and the inside of a second region including the center, and a first PD (photo diode) and a second PD disposed between the outside of the first region and the inside of the second region and receiving light emitted by the plurality of first LEDs and the at least one second LED, and which are disposed substantially symmetrically with respect to the center.

[0285] A control method according to an embodiment is such that, when light emitted by at least one second LED in operation S1510 is received by at least one of the first PD or the second PD and first sensing data is acquired, whether the user's body covers the sensor is identified based on the first sensing data.

[0286] In the S1520 operation, when a body is identified as covering the sensor, each of the plurality of first LEDs is controlled to emit light of different wavelengths.

[0287] In operation S1530, when light of different wavelengths emitted by a plurality of first LEDs is received by at least one of the first PD or the second PD and second sensing data is acquired, the user's biometric information is measured based on the second sensing data.

[0288] The first sensing data according to the embodiment includes a first absorbance obtained by the first PD receiving light emitted by at least one second LED and a second absorbance obtained by the second PD receiving light emitted by at least one second LED, and the operation S1510 for identifying whether the body covers the sensor may include an operation for identifying whether the body covers the first PD and the second PD based on at least one of the first absorbance or the second absorbance.

[0289] At least one second LED according to the embodiment includes a 2-1 LED arranged in a first direction and a 2-2 LED arranged in a second direction symmetrical to the first direction with respect to the center, each of the 2-1 LED and the 2-2 LED emitting light in a RED to IR band, and the first PD may be arranged adjacent to the 2-1 LED, and the second PD may be arranged adjacent to the 2-2 LED.

[0290] The operation S1510 for identifying whether the sensor according to the embodiment is covered may include an operation of identifying that the body does not cover the first PD that has acquired the first absorbance when the first PD receives the light emitted by the 2-1 LED and the first absorbance is greater than or equal to a threshold value, and providing feedback to cover the first PD, and an operation of identifying that the body does not cover the second PD that has acquired the second absorbance when the second PD receives the light emitted by the 2-2 LED and the second absorbance is greater than or equal to a threshold value, and providing feedback to guide (or induce) the body to cover the second PD.

[0291] An operation for providing feedback to guide (or induce) the body to cover the first PD according to an embodiment may include an operation for providing feedback, such as a UI screen for guiding the position of the body to cover the first PD, and a sound notification and / or a vibration notification indicating the position of the first PD on the rear surface of the electronic device, when the body is identified as not covering the first PD, and an operation for providing feedback, such as a UI screen for guiding the position of the body to cover the second PD, and a sound notification and / or a vibration notification indicating the position of the second PD on the rear surface, when the body is identified as not covering the second PD.

[0292] The method according to the embodiment further includes an operation of controlling at least one second LED to emit light after a preset time has elapsed when a user command for controlling the electronic device to measure biometric information is received, and the operation S1530 of measuring biometric information may include an operation of disabling touch detection through the display while acquiring the first sensing data after the preset time has elapsed.

[0293] The operation of controlling at least one second LED to emit light according to an embodiment may include an operation of controlling at least one second LED to emit light after a preset time has elapsed when rotation of the electronic device is detected through a motion sensor of the electronic device such that the rear of the electronic device faces upward, and the operation S1520 of controlling each of the plurality of first LEDs may include an operation of controlling the plurality of first LEDs to emit light when the body is identified as covering the first PD and the second PD.

[0294] The S1530 operation for measuring biometric information according to the embodiment may include an operation for providing a UI screen, sound notification, or vibration notification indicating the remaining time until measurement of biometric information while acquiring second sensing data.

[0295] Biometric information according to an embodiment may include antioxidant concentrations in the body.

[0296] According to an embodiment, the first region includes a range of 2 mm from the center, the second region includes a range of 20 mm from the center, and at least one second LED, the first PD and the second PD are arranged within a range of 2 mm to 20 mm from the center, the first PD may be arranged within a range of 6 mm from a 2-1 LED included in the at least one second LED, and the second PD may be arranged within a range of 6 mm from a 2-2 LED included in the at least one second LED.

[0297] According to an embodiment, an electronic device (e.g., an electronic device (100) of FIG. 2) includes a display (e.g., a display (140) of FIG. 2) disposed on a front side of the electronic device, a sensor (e.g., a sensor (170) of FIG. 2) disposed on a rear side of the electronic device, a memory (e.g., (120) of FIG. 2) storing instructions and including one or more storage media, and at least one processor (e.g., a processor (110) of FIG. 2) including a processing circuit, wherein the sensor includes a plurality of first LEDs disposed inside a first region including a center of the sensor and emitting light of different wavelengths, at least one second LED disposed between an outside of the first region and an inside of a second region including the center, a first PD (photo diode) and a second PD disposed between an outside of the first region and an inside of the second region and receiving light emitted by the plurality of first LEDs and the at least one second LED, and are arranged symmetrically with respect to the center, and at least One processor is configured to, when light emitted by the at least one second LED is received by at least one of the first PD or the second PD and first sensing data is obtained, identify whether a user's body covers the sensor based on the first sensing data, and, when the body is identified as covering the sensor, control each of the plurality of first LEDs to emit light of the different wavelengths, and, when light of the different wavelengths emitted by the plurality of first LEDs is received by at least one of the first PD or the second PD and second sensing data is obtained, measure biometric information of the user based on the second sensing data.

[0298] For example, the first sensing data may include a first absorbance obtained by the first PD receiving light emitted by the at least one second LED and a second absorbance obtained by the second PD receiving light emitted by the at least one second LED.

[0299] For example, the at least one processor may be configured to identify whether the body covers the first PD and the second PD based on at least one of the first absorbance or the second absorbance.

[0300] For example, the at least one second LED may include a 2-1 LED arranged in a first direction and a 2-2 LED arranged in a second direction symmetrical to the first direction with respect to the center.

[0301] For example, each of the 2-1 LED and the 2-2 LED can emit light in the RED to IR band.

[0302] For example, the first PD may be placed adjacent to the 2-1 LED, and the second PD may be placed adjacent to the 2-2 LED.

[0303] For example, the at least one processor may be configured to identify that the body does not cover the first PD that has obtained the first absorbance when the first absorbance obtained by the first PD receiving the light emitted by the second-1 LED is greater than or equal to a threshold value, and to provide feedback to cover the first PD.

[0304] For example, the at least one processor may be configured to identify that the body does not cover the second PD that has obtained the second absorbance when the second PD receives the light emitted by the second-2 LED and the second absorbance is greater than or equal to the threshold, and to provide the feedback that guides (or induces) the body to cover the second PD.

[0305] For example, the at least one processor may be configured to provide, as feedback, a UI screen guiding the position of the body so that the body covers the first PD, a sound notification or vibration notification indicating the position of the first PD on the rear surface of the electronic device, if the body is identified as not covering the first PD.

[0306] For example, the at least one processor may be configured to provide, as feedback, a UI screen guiding the position of the body so that the body covers the second PD, a sound notification indicating the position of the second PD on the back, or a vibration notification, if the body is identified as not covering the second PD.

[0307] For example, the at least one processor may control the at least one second LED to emit light after a preset period of time has elapsed when a user command for controlling the electronic device to measure the biometric information is received.

[0308] For example, the at least one processor may disable touch detection through the display while acquiring the first sensing data after the preset time has elapsed.

[0309] For example, the electronic device may further include a motion sensor.

[0310] For example, the at least one processor may control the at least one second LED to emit light after the preset time has elapsed when the rotation of the electronic device is detected through the motion sensor so that the rear side of the electronic device faces upward.

[0311] For example, the at least one processor may control the plurality of first LEDs to emit light when the body is identified as covering the first PD and the second PD.

[0312] For example, the at least one processor may be configured to provide a UI screen, sound notification, or vibration notification indicating the time remaining until measurement of the biometric information while acquiring the second sensing data.

[0313] For example, the at least one processor may measure biometric information of the user based on the second sensing data.

[0314] For example, the bio-information may include the antioxidant concentration of the body.

[0315] For example, the first region may include a range of 2 mm from the center.

[0316] For example, the second region may include a range of 20 mm from the center.

[0317] For example, the at least one second LED, the first PD and the second PD may be positioned within a range of 2 mm to 20 mm from the center.

[0318] For example, the first PD may be positioned within a range of 6 mm from the second-1 LED included in the at least one second LED, and the second PD may be positioned within a range of 6 mm from the second-2 LED included in the at least one second LED.

[0319] According to an embodiment, in a control method of an electronic device (e.g., an electronic device (100) of FIG. 2), the electronic device may include a display (e.g., a display (140) of FIG. 2) disposed on a front side of the electronic device and a sensor (e.g., a sensor (170) of FIG. 2) disposed on a rear side of the electronic device, and the sensor may include a plurality of first LEDs disposed inside a first region including a center of the sensor and emitting light of different wavelengths, at least one second LED disposed between an outside of the first region and an inside of a second region including the center, and a first PD (photo diode) and a second PD disposed between an outside of the first region and an inside of the second region and receiving light emitted by the plurality of first LEDs and the at least one second LED, and being disposed symmetrically with respect to the center.

[0320] The method includes an operation of identifying whether a user's body covers the sensor based on the first sensing data when light emitted by the at least one second LED is received by at least one of the first PD or the second PD and first sensing data is obtained; an operation of controlling each of the plurality of first LEDs so that the plurality of first LEDs emit light of different wavelengths when the body is identified as covering the sensor; and an operation of measuring the user's biometric information based on the second sensing data when light of different wavelengths emitted by the plurality of first LEDs is received by at least one of the first PD or the second PD and second sensing data is obtained.

[0321] For example, the first sensing data may include a first absorbance obtained by the first PD receiving light emitted by the at least one second LED and a second absorbance obtained by the second PD receiving light emitted by the at least one second LED.

[0322] For example, the act of identifying whether the body covers the sensor may include an act of identifying whether the body covers the first PD and the second PD based on at least one of the first absorbance or the second absorbance.

[0323] For example, the at least one second LED may include a 2-1 LED arranged in a first direction and a 2-2 LED arranged in a second direction symmetrical to the first direction with respect to the center.

[0324] For example, each of the 2-1 LED and the 2-2 LED can emit light in the RED to IR band.

[0325] For example, the first PD may be placed adjacent to the 2-1 LED, and the second PD may be placed adjacent to the 2-2 LED.

[0326] For example, the operation of identifying whether the sensor is covered may include an operation of identifying that the body does not cover the first PD that has acquired the first absorbance when the first PD receives the light emitted by the 2-1 LED and the first absorbance is greater than or equal to a threshold value, and providing feedback to cover the first PD; and an operation of identifying that the body does not cover the second PD that has acquired the second absorbance when the second PD receives the light emitted by the 2-2 LED and the second absorbance is greater than or equal to the threshold value, and providing feedback to cover the second PD.

[0327] For example, the action of providing feedback to cover the first PD may include, when the body is identified as not covering the first PD, a UI screen guiding the position of the body so that the body covers the first PD, and an action of providing a sound notification or vibration notification indicating the position of the first PD on the rear surface of the electronic device as the feedback.

[0328] For example, the action of providing the feedback to cover the second PD may include, when the body is identified as not covering the second PD, an action of providing a UI screen guiding the position of the body so that the body covers the second PD, a sound notification indicating the position of the second PD on the back, or a vibration notification as the feedback.

[0329] For example, the method may further include an operation of controlling the at least one second LED to emit light after a preset time has elapsed when a user command for controlling the electronic device to measure the biometric information is received.

[0330] For example, the action of measuring the biometric information may include an action of disabling touch detection through the display while acquiring the first sensing data after the preset time has elapsed.

[0331] For example, the operation of controlling the at least one second LED to emit light may include an operation of controlling the at least one second LED to emit light after the preset time has elapsed when the rotation of the electronic device is detected so that the rear surface of the electronic device faces upward through a motion sensor of the electronic device.

[0332] For example, the operation of controlling each of the plurality of first LEDs may include an operation of controlling the plurality of first LEDs to emit light when the body is identified as covering the first PD and the second PD.

[0333] For example, the action of measuring the biometric information may include an action of providing a UI screen, sound notification, or vibration notification indicating the time remaining until the measurement of the biometric information while acquiring the second sensing data.

[0334] For example, the bio-information may include the antioxidant concentration of the body.

[0335] For example, the first region may include a range of 2 mm from the center, and the second region may include a range of 20 mm from the center.

[0336] For example, the at least one second LED, the first PD and the second PD may be positioned within a range of 2 mm to 20 mm from the center.

[0337] For example, the first PD may be positioned within a range of 6 mm from the second-1 LED included in the at least one second LED, and the second PD may be positioned within a range of 6 mm from the second-2 LED included in the at least one second LED.

[0338] Meanwhile, the various embodiments described above may be implemented in a computer-readable recording medium or similar device using software, hardware, or a combination thereof. In some cases, the embodiments described herein may be implemented by the processor itself. In a software implementation, embodiments, such as the procedures and functions described herein, may be implemented as separate software modules. Each of the software modules may perform one or more functions and operations described herein.

[0339] Meanwhile, computer instructions for performing processing operations of an electronic device according to various embodiments of the present disclosure described above may be stored in a non-transitory computer-readable medium. When the computer instructions stored in such a non-transitory computer-readable medium are executed by a processor of a specific device, the computer instructions cause the specific device to perform processing operations in the electronic device according to various embodiments described above.

[0340] A non-transitory computer-readable medium refers to a medium that permanently stores data and can be read by a device, rather than a medium that stores data for a short period of time, such as a register, cache, or memory. Specific examples of non-transitory computer-readable media include CDs, DVDs, hard disks, Blu-ray discs, USBs, memory cards, and ROMs.

[0341] Although the preferred embodiments of the present disclosure have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above, and various modifications may be made by a person having ordinary skill in the art to which the present disclosure pertains without departing from the gist of the present disclosure as claimed in the claims, and such modifications should not be understood individually from the technical idea or prospect of the present disclosure.

Claims

1. In electronic devices, A display placed on the front of the electronic device; A sensor positioned on the rear of the electronic device; A memory storing instructions and including one or more storage media; and At least one processor comprising a processing circuit; The above sensor, A plurality of first LEDs (light emitting diodes) that are arranged inside a first region including the center of the sensor and emit light of different wavelengths, At least one second LED disposed between the outside of the first region and the inside of the second region including the center; A first PD (photo diode) and a second PD are disposed between the outside of the first region and the inside of the second region and receive light emitted by the plurality of first LEDs and the at least one second LED, and are arranged symmetrically with respect to the center. At least one processor, When the light emitted by the at least one second LED is received by at least one of the first PD or the second PD and first sensing data is acquired, it is identified whether the user's body covers the sensor, When the body is identified as covering the sensor, the plurality of first LEDs are controlled to emit light of different wavelengths, An electronic device configured to measure the user's biometric information when at least one of the first PD or the second PD receives the light of the different wavelengths emitted by the plurality of first LEDs and second sensing data is obtained.

2. In paragraph 1, The above first sensing data is, It includes a first absorbance obtained based on the first PD receiving light emitted by the at least one second LED and a second absorbance obtained based on the second PD receiving light emitted by the at least one second LED, At least one processor, An electronic device configured to identify whether the body covers the first PD and the second PD based on at least one of the first absorbance or the second absorbance.

3. In paragraph 2, The at least one second LED includes a 2-1 LED arranged in a first direction and a 2-2 LED arranged in a second direction symmetrical to the first direction with respect to the center, Each of the above 2-1 LED and the above 2-2 LED emits light in the RED to IR band, The above first PD is placed adjacent to the above second-1 LED, The above second PD is an electronic device arranged adjacent to the 2-2 LED.

4. In paragraph 3, At least one processor, If the first absorbance obtained by the first PD receiving the light emitted by the second-1 LED is greater than a threshold value, the body is identified as not covering the first PD, and feedback is provided thereon. An electronic device configured to identify that the body does not cover the second PD and provide feedback thereon when the second absorbance obtained by the second PD receiving the light emitted by the second-2 LED is greater than or equal to the threshold.

5. In paragraph 4, At least one processor, If the body is identified as not covering the first PD, at least one of a UI screen, a sound notification, or a vibration notification is provided as the feedback, indicating at least one of the position of the body and the position of the first PD on the rear surface of the electronic device, or An electronic device configured to provide, as feedback, at least one of a UI screen, a sound notification, or a vibration notification, indicating at least one of a location of the body and a location of the second PD on the rear surface of the electronic device, when the body is identified as not covering the second PD.

6. In paragraph 1, At least one processor, When a user command for controlling the measurement of the above biometric information is received, the at least one second LED is controlled to light up after a preset time has elapsed, An electronic device that disables touch detection through the display while acquiring the first sensing data after the above-described preset time has elapsed.

7. In paragraph 6, It further includes a motion sensor; At least one processor, When the rotation of the electronic device is detected so that the rear of the electronic device faces upward through the motion sensor, the at least one second LED is controlled to emit light after the preset time has elapsed. An electronic device that controls the plurality of first LEDs to emit light when the body is identified as covering the first PD and the second PD.

8. In paragraph 6, At least one processor, An electronic device configured to provide at least one of a UI screen, a sound notification, or a vibration notification indicating the remaining time until measurement of the biometric information while acquiring the second sensing data.

9. In paragraph 1, At least one processor, Measure the user's biometric information based on the second sensing data, An electronic device wherein the biometric information includes an antioxidant concentration of the body.

10. In paragraph 1, The above first region includes a range of 2 mm from the center, The second region includes a range of 20 mm from the center, The at least one second LED, the first PD and the second PD are arranged within a range of 2 mm to 20 mm from the center, The above first PD is, is positioned within a range of 6 mm from the second-1 LED included in at least one of the second LEDs; An electronic device wherein the second PD is positioned within a range of 6 mm from the second-2 LED included in the at least one second LED.

11. In a method for controlling an electronic device, The above electronic device, a display arranged on the front of the electronic device; and A sensor disposed on the rear of the electronic device; The above sensor, A plurality of first LEDs that are arranged inside a first region including the center of the sensor and emit light of different wavelengths, at least one second LED that is arranged between the outside of the first region and the inside of a second region including the center, and a first PD (photo diode) and a second PD that are arranged between the outside of the first region and the inside of the second region and receive light emitted by the plurality of first LEDs and the at least one second LED, and are arranged symmetrically with respect to the center. The above method, An operation of identifying whether the user's body covers the sensor when the light emitted by the at least one second LED is received by at least one of the first PD or the second PD and first sensing data is obtained; When the body is identified as covering the sensor, an operation of controlling the plurality of first LEDs to emit light of different wavelengths; and A control method comprising: an operation of measuring the user's biometric information based on the second sensing data when the light of the different wavelengths emitted by the plurality of first LEDs is received by at least one of the first PD or the second PD and second sensing data is obtained; 12. In paragraph 11, The above first sensing data is, It includes a first absorbance obtained by the first PD receiving light emitted by the at least one second LED and a second absorbance obtained by the second PD receiving light emitted by the at least one second LED. The action of identifying whether the above sensor is covered is: A control method comprising: an operation of identifying whether the body covers the first PD and the second PD based on at least one of the first absorbance or the second absorbance.

13. In paragraph 12, The at least one second LED includes a 2-1 LED arranged in a first direction and a 2-2 LED arranged in a second direction symmetrical to the first direction with respect to the center, Each of the above 2-1 LED and the above 2-2 LED emits light in the RED to IR band, The above first PD is placed adjacent to the above second-1 LED, A control method wherein the second PD is placed adjacent to the second-2 LED.

14. In paragraph 13, The action of identifying whether the above sensor is covered is: An operation of identifying that the body does not cover the first PD and providing feedback thereon when the first absorbance obtained by the first PD receiving the light emitted by the second-1 LED is greater than a threshold value; and A control method comprising: an operation of identifying that the body does not cover the second PD and providing feedback thereon when the second absorbance obtained by the second PD receiving the light emitted by the second-2 LED is greater than or equal to the threshold; 15. In paragraph 14, The action of providing feedback to cover the above first PD is: If the body is identified as not covering the first PD, an action of providing at least one of a UI screen, a sound notification, or a vibration notification as the feedback, the UI screen indicating at least one of a position of the body and a position of the first PD on the rear surface of the electronic device; The operation of providing the feedback to cover the second PD is as follows: A control method comprising: providing, as feedback, at least one of a UI screen, a sound notification, or a vibration notification, indicating at least one of a position of the body and a position of the second PD on the rear surface of the electronic device, when the body is identified as not covering the second PD;

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