Electronic device and method for identifying object having antioxidant material measured therein

Abstract

An electronic device is disclosed. The electronic device comprises: a sensor including a plurality of LEDs and a plurality of PDs; memory for storing instructions; and at least one processor. The instructions, when executed by the at least one processor, may cause the electronic device to: output light toward an object by using the plurality of LEDs; in response to the output light being reflected by the object and received by the plurality of PDs, obtain absorbance data on the basis of the received light; and identify whether the object is the user's skin on the basis of the absorbance data and reference data stored in the memory. The absorbance data may include the absorbance of an LED-PD pair corresponding to an LED that output light and a PD that received reflected light based on the light output from the LED.

Description

Electronic device and method for identifying a target for measuring antioxidant substances

[0001] The present disclosure relates to an electronic device and method for identifying a target for measuring antioxidant substances.

[0002] Electronic devices have recently evolved into diverse forms for the convenience of users. In particular, wearable devices, which can be worn (or come into contact with) the user's body, are available in various forms, such as smartwatches, smart glasses, smart rings, and smart bands.

[0003] As interest in health has increased recently, electronic devices are collecting and analyzing various biometric information related to the user's body and using the biometric information to provide various services to the user.

[0004] An electronic device according to one embodiment may include a sensor including a plurality of LEDs and a plurality of PDs, a memory storing instructions, and at least one processor. The instructions, when executed by the at least one processor, may cause the electronic device to output light toward an object using the plurality of LEDs. The instructions, when executed by the at least one processor, may cause the electronic device to obtain absorbance data based on the received light in response to the outputted light being reflected by the object and received by the plurality of PDs. The instructions, when executed by the at least one processor, may cause the electronic device to identify whether the object is a user's skin based on the absorbance data and reference data stored in the memory. The absorbance data may include absorbance for an LED-PD pair corresponding to an LED that outputs light and a PD that receives reflected light based on light output from the LED.

[0005] A method of an electronic device including a sensor including a plurality of LEDs and a plurality of PDs according to one embodiment may include an operation of outputting light toward an object using the plurality of LEDs, an operation of obtaining absorbance data based on the received light in response to the outputted light being reflected by the object and received by the plurality of PDs, and an operation of identifying whether the object is a user's skin based on the absorbance data and reference data stored in the memory. The absorbance data may include an absorbance for an LED-PD pair corresponding to an LED that outputted light and a PD that received reflected light based on the light output from the LED.

[0006] FIG. 1 is a block diagram of an exemplary electronic device capable of performing operations described in accordance with an embodiment of the present disclosure.

[0007] FIG. 2A is a perspective view of the front of an electronic device according to an embodiment of the present disclosure.

[0008] FIG. 2b is a perspective view of the rear surface of an electronic device according to an embodiment of the present disclosure.

[0009] FIG. 2c is a drawing for explaining a light-emitting unit and a light-receiving unit of a biosensor according to one embodiment.

[0010] FIG. 3 is an exploded perspective view of an electronic device according to an embodiment of the present disclosure.

[0011] FIG. 4 is a block diagram of an electronic device according to an embodiment of the present disclosure.

[0012] FIG. 5A and FIG. 5B are flowcharts for explaining operations of an electronic device according to an embodiment of the present disclosure.

[0013] FIG. 6 illustrates an example of reference data according to an embodiment of the present disclosure.

[0014] Figure 7 shows simulation results comparing similarity values ​​according to an embodiment of the present disclosure.

[0015] FIGS. 8A, 8B, and 8C are drawings for explaining the operation of an electronic device according to an embodiment of the present disclosure.

[0016] FIGS. 9A, 9B, and 9C are drawings for explaining the operation of an electronic device according to an embodiment of the present disclosure.

[0017] Hereinafter, the present disclosure will be described in detail with reference to the attached drawings.

[0018] In this disclosure, expressions such as “has,” “can have,” “includes,” or “may include” indicate the presence of a corresponding feature (e.g., a component such as a number, function, operation, or part), and do not exclude the presence of additional features.

[0019] In this disclosure, the expression "at least one of A or / and B" should be understood to mean either "A" or "B" or "A and B". Expressions such as "A or B", "at least one of A and / or B", "A, B, or C" or "at least one of A, B, and / or C" may include all possible combinations of the items listed together.

[0020] In this disclosure, expressions such as “first,” “second,” “first,” or “second,” can 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.

[0021] 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).

[0022] Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "comprise" or "consist of" 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 presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0023] Hereinafter, embodiments of the present disclosure will be described in more detail with reference to the attached drawings.

[0024] FIG. 1 is a block diagram of an exemplary electronic device capable of performing operations described in accordance with an embodiment of the present disclosure.

[0025] Referring to FIG. 1, the electronic device (100) may be implemented in various forms that can be worn by a user, such as a smart watch (181), a smart ring (182), wireless earphones (183), smart glasses (184), or a smart band. The components, their relationships, and their functions illustrated in FIG. 1 are merely exemplary and do not limit the implementations described or claimed in this document. The electronic device (100) may be referred to as a wearable device, a user device, a multi-function device, or a portable device.

[0026] The electronic device (100) may include components including at least one processor (110) (hereinafter referred to as processor (110)), at least one memory (120) (hereinafter referred to as memory (120)), at least one microphone (130) (hereinafter referred to as microphone (130)), 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)), at least one sensor (170) (hereinafter referred to as sensor (170)), and / or at least one speaker (180) (hereinafter referred to as speaker (180)). 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.

[0027] The processor (110) may be implemented as one or more IC (integrated circuit (or circuitry)) chips and may perform various data processing. The processor (110) may include at least one electrical circuit and may individually or collectively perform distributed processing of instructions (or programs, data, etc.) stored in the memory (120). The processor (110) may include a processor assembly including one or more processing circuits. The processor (110) may include any processing circuit operative to control the performance and operations of one or more components of the electronic device (100) (e.g., the memory (120), the microphone (130), the display (140), the image sensor (150), the communication circuit (160), the sensor (170), and / or the speaker (180)). For example, the 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, the processor (110) may be implemented as multiple cores (or at least one core circuit), multiple chips, or multiple chipsets. For example, the processor (110) may include one or more processing circuits. For example, the 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 the processor (110) may be included in a first chip of the electronic device (100), and at least another portion of the 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).

[0028] For example, the 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 the processor (110) are merely exemplary. For example, the processor (110) may further include other components. For example, some components of the processor (110) may be omitted from the processor (110). For example, some components of the processor (110) may be included as separate components of the electronic device (100) outside the processor (110). For example, some components of the processor (110) (e.g., memory controller (116)) may be included within other components (e.g., at least a portion of 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)).

[0029] The processor (110) may cause 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) may be configured to control components of the 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) may be configured to execute parallel operations (e.g., rendering). The NPU (113) (or neural processing circuit, or artificial intelligence (AI) chip) may 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 the 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 acquired from a component of the processor (110) into a format suitable for transmission to another electronic device via the communication circuit (160), or to process data acquired from another electronic device via the communication circuit (160) into a format suitable for processing by the component of the 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 about the state of the electronic device (100) and / or the state of the surroundings of the electronic device (100), acquired via the sensor (170), into a format suitable for the component of the processor (110).

[0030] 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 the 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).

[0031] 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 the 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.

[0032] The microphone (130) can acquire sound output from an external object. Depending on the embodiment, the number of microphones (130) may be one or more. The speaker (180) can output sound to the outside. Depending on the embodiment, the number of speakers (180) may be one or more.

[0033] The display (140) is controlled by the processor (110) and can output visual information to the user. The visual information may include visual objects displayed on the display (140). For example, the visual objects may include screens, images, icons, GUIs, UI elements, etc. For example, the display (130) may be implemented as a flat panel display (FPD), a curved display, a flexible display, etc. For example, the display (140) may be implemented as various types of displays such as a Liquid Crystal Display (LCD) display, an Active Matrix Organic Light Emitting Diodes (AMOLED) display, a Light Emitting Diodes (LED), a micro LED, a Mini LED, etc.

[0034] 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).

[0035] 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 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.

[0036] 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.

[0037] According to one embodiment, the sensor (170) may include a biosensor (171) and an electrode sensor (172).

[0038] The biometric sensor (171) 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 (171) may include a photoplethysmography (PPG) sensor or a biomarker sensor.

[0039] According to one embodiment, the biosensor (171) may include an emitter and a receiver (or detector). The biosensor (171) may output light to the outside through the emitter under the control of the processor (110). The output of light (or light) may be replaced with expressions such as emission, divergence, and 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 light-emitting diodes (LEDs), laser diodes, or vertical cavity surface emitting lasers (VCSELs). The light output by the emitter may include at least one of infrared (IR) ray, visible light, and ultraviolet (UV) ray. The emitter may include light-emitting elements for outputting light corresponding to each of infrared, visible, and ultraviolet ray.

[0040] The light output 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 (171). For example, the body parts may include the palm or sole of the foot, which have a thick epidermal layer, areas where venous blood or capillary blood is located, or other areas of the body with a high blood vessel density, such as the fingers, toes, or earlobes. In addition, the body parts may include the wrist, fingers, the inside of the ear, etc., which may come into contact with the biosensor (171) when wearing the electronic device (100).

[0041] 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, etc.). 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 be composed of at least one photodiode (PD), a phototransistor, etc. However, the light receiving unit 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, etc. As a non-limiting example, the biosensor (171) may include an amplifier for amplifying an electrical signal and an analog-to-digital converter (ADC) for converting the electrical signal into a digital signal.

[0042] According to one embodiment, the biometric sensor (171) can measure the user's biometric information based on the received light under the control of the processor (110).

[0043] 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, stress index, etc.

[0044] 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 the biosensor (171). 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. Hereinafter, for the convenience of explanation, an antioxidant will be described as an example.

[0045] The electrode sensor (172) may be configured to detect biometric information through contact with the user's body. For example, the electrode sensor (172) may include at least one electrode. Under the control of the processor (110), the electrode sensor (172) may detect electrical signals from the body through electrodes in contact with the body, thereby measuring an electrocardiogram (ECG), an electromyogram (EMG), an electroencephalogram (EEG), etc.

[0046] 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.

[0047] The light sensor can detect the brightness of external light. For example, the processor (110) can control the brightness of the display (130) 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 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.

[0048] FIG. 2a is a perspective view of the front side of an electronic device according to an embodiment of the present disclosure, and FIG. 2b is a perspective view of the rear side of the electronic device according to an embodiment of the present disclosure.

[0049] Referring to FIGS. 2A and 2B, an electronic device (200) according to one embodiment (e.g., the electronic device (100) of FIG. 1) may be implemented as a watch-type device (e.g., a smart watch) that can be worn on a user's wrist.

[0050] Referring to FIGS. 2A and 2B , an electronic device (200) according to one embodiment 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 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. 2A and 2B .

[0051] In one embodiment, the first side (210A) may be formed by a front plate (201) that is at least partially substantially transparent (e.g., a glass plate or a polymer plate comprising various coating layers). The second side (210B) may be formed by a substantially opaque back plate (207). The back plate (207) may be formed of, for example, coated or colored glass, ceramic, polymer, metal (e.g., aluminum, stainless steel (STS), or magnesium), or a combination of at least two of the foregoing materials. The side surface (210C) may be formed by a side bezel structure (or “side member”) (206) that is coupled to the front plate (201) and the back plate (207) and comprises a metal and / or a polymer. In some embodiments, the back plate (207) and the side bezel structure (206) may be formed integrally and comprise the same material (e.g., a metal material such as aluminum). The above-mentioned fastening member (250, 260) may be formed of various materials and shapes. The integral and multiple unit links may be formed to be mutually movable by a combination of at least two of the above-mentioned materials, such as woven fabric, leather, rubber, urethane, metal, ceramic, or a combination of the above-mentioned materials.

[0052] According to one embodiment, the electronic device (200) may include at least one of a display (220, see FIG. 3) (e.g., display (140) of FIG. 1), an audio module (205, 208), a sensor (e.g., sensor (170) of FIG. 1), 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., key input device (202, 203, 204) or connector hole (209)) or may additionally include other components.

[0053] The display (220) may be visually exposed, for example, through a significant portion of the front plate (201). The shape of the display (220) may correspond 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 combined with 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.

[0054] The audio module (205, 208) may include a microphone hole (205) and a speaker hole (208). The microphone hole (205) may have a microphone (e.g., a microphone (130) of FIG. 1) disposed therein for acquiring external sound, and in some embodiments, multiple microphones may be disposed to detect the direction of sound. The speaker hole (208) may have a speaker (e.g., a speaker (180) of FIG. 1) disposed therein for outputting sound. 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 may be included without the speaker hole (208) (e.g., a piezo speaker).

[0055] The sensor can generate an electrical signal or data value corresponding to the internal operating state of the electronic device (200) or the external environmental state. The sensor can include, for example, a biometric sensor (211) (e.g., the biometric sensor (171) of FIG. 1) and a temperature sensor (212) disposed on the second surface (210B) of the housing (210).

[0056] The sensor may include electrode areas (213, 214, 203, 204) forming a portion of a surface of the electronic device (200) and a biosignal detection circuit (not shown) electrically connected to the electrode areas (213, 214, 203, 204). For example, the electrode areas (213, 214) may include a first electrode area (213) and a second electrode area (214) disposed on a second surface (210B) of the housing (210). The electrode areas (203, 204) may include a third electrode area (203) and a fourth electrode area (204) disposed on a key button (203, 204). A sensor (e.g., electrode sensor (172) of FIG. 1) may be configured such that electrode areas (213, 214, 203, 204) obtain electrical signals from a part of the user's body, and a bio-signal detection circuit detects bio-information of the user based on the electrical signals.

[0057] According to one embodiment, a processor (e.g., processor (110) of FIG. 1) can acquire an electrical signal generated from the heart using a first electrode area (213) that contacts the user's wrist and a third electrode area (203) that contacts the user's finger, and can detect an electrocardiogram using the electrical signal. The second electrode area (214) can be used as a ground, thereby improving the accuracy of biosignal measurement.

[0058] According to one embodiment, a processor (e.g., processor (110) of FIG. 1) can measure a user's body composition by performing a body impedance analysis (BIA) measurement using four electrode regions. The body composition may include body fat, body water, etc. The processor (e.g., processor (110) of FIG. 1) can measure an electrodermal activity (EDA) of the user's skin using two electrode regions. The EDA may include measurements related to skin conductance, galvanic skin response (GSR), electrodermal response (EDR), psychogalvanic reflex (PRG), etc.

[0059] 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 accommodate a connector (e.g., a USB connector) for transmitting and receiving power and / or data with an external electronic device, and may include another connector hole (not shown) for receiving 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.

[0060] 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).

[0061] 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.

[0062] FIG. 2c is a drawing for explaining a light emitting unit and a light receiving unit of a biosensor according to an embodiment of the present disclosure.

[0063] Referring to FIG. 2C, the biosensor (211) may include a plurality of LEDs (271-1 to 271-13). Among the plurality of LEDs (271-1 to 271-13), LEDs (271-1, 271-2, 271-4, 271-6, 271-10) may be arranged in a central region of the second surface (210B), LEDs (271-3, 271-7, 271-9) may be arranged in an upper region based on the central region, LEDs (271-5, 271-8, 271-11) may be arranged in a lower region based on the central region, LED (217-12) may be arranged in a left region based on the central region, and LED (217-13) may be arranged in a right region based on the central region.

[0064] In one embodiment, the plurality of LEDs (271-1 to 271-13) can output light of multiple wavelengths. The wavelengths can be replaced with expressions such as, for example, center wavelength.

[0065] For example, the wavelength of light output from LED1 (I405) (271-1) is 405 nm. The wavelength of light output from LED2 (I470) (271-2) is 470 nm. The wavelength of light output from LED3 (I525) (271-3), LED4 (I525) (271-4), and LED5 (I525) (271-5) is 525 nm. The wavelength of light output from LED6 (I575) (271-6) is 575 nm. The wavelength of light output from LED7 (TRed) (271-7) and LED8 (BRed) (271-8) is 660 nm. The wavelength of light output from LED9 (TIR) ​​(271-9), LED10 (CIR) (271-10), and LED11 (BIR) (271-11) is 940 nm. The wavelength of light output from LED12 (271-12) and LED13 (271-13) is 365 nm.

[0066] The biosensor (211) may include at least four photodiodes to form multiple optical paths between the LEDs and the photodiodes. Hereinafter, the photodiodes are expressed as PDs. The biosensor (211) may include multiple PDs (PD1, PD2, PD3, PD4) (281-1 to 281-4). For example, the multiple PDs (PD1, PD2, PD3, PD4) (281-1 to 281-4) may be arranged in a square shape (e.g., a corner area of ​​a square) centered on the LEDs arranged in the central area of ​​the second surface (210B).

[0067] The PD can detect light of multiple wavelengths, or can detect light of wavelengths other than a specific wavelength among the multiple wavelengths. Alternatively, among the multiple PDs, some PDs can detect light of multiple wavelengths, and some PDs can detect light of wavelengths other than a specific wavelength. For example, among the four PDs (281-1 to 281-4), some PDs (e.g., PD1 (281-1), PD3 (281-3)) can detect light of multiple wavelengths (e.g., wavelengths in the infrared band, wavelengths in the visible light band, wavelengths in the ultraviolet band), and some PDs (e.g., PD2 (281-2), PD4 (281-4)) can detect light of wavelengths other than a blue series wavelength.

[0068] Although 13 LEDs and 4 PDs are illustrated in FIG. 2C, the number of LEDs and PDs is not limited thereto. Furthermore, the arrangement of the LEDs and PDs illustrated in FIG. 2C is merely an example, and the present disclosure is not limited thereto. Furthermore, the wavelength of the LEDs described in FIG. 2C is merely an example, and the present disclosure is not limited thereto. For example, the wavelength of the LEDs may be various wavelengths within the infrared or ultraviolet wavelength range. Furthermore, the wavelength of the LEDs may be various wavelengths within the wavelength range of visible light.

[0069] FIG. 3 is an exploded perspective view of an electronic device according to an embodiment of the present disclosure.

[0070] Referring to FIG. 3, an electronic device (300) (e.g., the electronic device (100) of FIG. 1 or the electronic device (200) of FIGS. 2A and 2B) may include a side bezel structure (310), a wheel key (320) (e.g., the wheel key (202) of FIGS. 2A and 2B), 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. 2A and 2B), and fastening members (395, 397) (e.g., the fastening members (250, 260) of FIGS. 2A and 2B). At least one of the components of the electronic device (300) may be identical to or similar to at least one of the components of the electronic device (100) of FIG. 1 or the electronic device (200) of FIGS. 2A to 2B, and any overlapping descriptions will be omitted below.

[0071] 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 metallic 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. 1), a memory (e.g., the memory (120) of FIG. 1), and / or an interface. The processor may include, for example, one or more of a central processing unit, a GPU (graphics processing unit), an application processor, a sensor processor, or a communication processor.

[0072] The memory may include, for example, volatile memory (e.g., volatile memory (121) of FIG. 1) or non-volatile memory (e.g., non-volatile memory (122) of FIG. 1). The interface may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, and / or an audio interface. The interface may electrically or physically connect the electronic device (300) to an external electronic device, for example, and may include a USB connector, an SD card / MMC connector, or an audio connector.

[0073] 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).

[0074] 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).

[0075] 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, an NFC antenna, a wireless charging antenna, and / or an 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).

[0076] 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.

[0077] FIG. 4 is a block diagram of an electronic device according to an embodiment of the present disclosure.

[0078] Referring to FIG. 4, the electronic device (100) may include a processor (110), a memory (120), and a sensor (171). Any details overlapping with those described in FIGS. 1 to 3 will be omitted.

[0079] According to one 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. However, the present invention 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) or large scale integration (LSI) having a processing algorithm built in, 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 a memory.

[0080] The processor (110) may include 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.

[0081] When a method according to an embodiment includes multiple operations, the multiple operations may be performed by one processor or by multiple 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-specific processor).

[0082] 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 multiple cores (e.g., homogeneous multicores or heterogeneous multicores). When the processor (110) is implemented as a multicore processor, each of the multiple 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 multiple cores may be included in the multicore processor. In addition, each of the multiple cores (or some of the multiple 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 multiple cores may be linked to read and execute a program instruction for implementing a method according to an embodiment of the present disclosure.

[0083] When a method according to an embodiment includes a plurality of operations, the plurality of operations may be performed by one core among the plurality of cores included in a multi-core processor, or may be performed by the 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.

[0084] In embodiments, 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.

[0085] A sensor (171) (e.g., a biometric sensor (171) of FIG. 1) may be configured to acquire a user's biometric information. For example, the sensor (171) may output light to the user's skin, and when the output light is reflected and received, various biometric information may be acquired based on the received light.

[0086] The sensor (171) may include a plurality of LEDs (410) and a plurality of PDs (420). The plurality of LEDs (410) and the plurality of PDs (420) may be disposed on the housing of the electronic device (100) or may be disposed to be exposed to the outside through the housing.

[0087] A plurality of LEDs (410) can output light. For example, the plurality of LEDs (410) can be sequentially driven in a time-division manner to sequentially output light, or can be driven simultaneously to simultaneously output light. Alternatively, the plurality of LEDs (410) can be driven simultaneously in units of predefined LEDs and sequentially driven as a whole.

[0088] The plurality of LEDs (410) can output light of multiple wavelengths. For example, among the plurality of LEDs (410), some LEDs can output visible light, and some LEDs can output infrared light. The visible light can include light of various colors (e.g., purple, blue, green, yellow, red). For example, the plurality of LEDs (410) can include 9 LEDs (LED1 (271-1), LED2 (271-2), LED4 (271-4), LED6 (271-6), LED7 (271-7), LED8 (271-8), LED9 (271-9), LED10 (271-10), and LED11 (271-11)) among the 13 LEDs (271-1 to 271-13) illustrated in FIG. 2c. However, the present disclosure is not limited thereto. For example, the plurality of LEDs (410) may include at least four LEDs (e.g., LED1 (271-1), LED2 (271-2), LED4 (271-4), LED6 (271-6)) for outputting light of a wavelength for measuring antioxidant levels and light of a wavelength for measuring baseline and hemoglobin among the nine LEDs.

[0089] A plurality of PDs (420) can receive light. For example, the plurality of PDs (420) can receive reflected light based on light output from the plurality of LEDs (410) being reflected by an object. For example, the plurality of PDs (420) can include four PDs (e.g., PD1 to PD4) (281-1 to 281-4) as illustrated in FIG. 2c.

[0090] According to one embodiment, the processor (110) can obtain information on the antioxidant level using data acquired by the sensor (171). The antioxidant level represents the concentration of antioxidant substances accumulated in the skin and can be estimated based on absorbance (or absorbance value). Absorbance may include a value indicating how much light is absorbed when passing through a material. For example, the processor (110) may drive a plurality of LEDs (410) to output light. When the output light is reflected and received by a plurality of PDs (420), the processor (110) may obtain absorbance data including a plurality of absorbances corresponding to a plurality of LED-PD pairs. The LED-PD pair may include an LED that outputs light and a PD that receives reflected light, which is light output from the LED and reflected light. The processor (110) can obtain an antioxidant value by using absorbances corresponding to some LED-PD pairs among a plurality of absorbances corresponding to a plurality of LED-PD pairs included in the absorbance data. For example, some LED-PD pairs can include an LED1(271-1)-PD1(281-1) pair, an LED1(271-1)-PD3(281-3) pair, an LED2(271-2)-PD1(281-1) pair, an LED2(271-2)-PD3(281-3) pair, an LED4(271-4)-PD1(281-1) pair, an LED4(271-4)-PD3(281-3) pair, an LED6(271-6)-PD1(281-1) pair, and an LED6(271-6)-PD3(281-3) pair. For example, the processor (110) can obtain an antioxidant value by multiplying the absorbances corresponding to some LED-PD pairs by a preset coefficient and then adding them up.

[0091] In one embodiment, when measuring antioxidant levels, the processor (110) can identify whether the measurement target is the user's skin and perform an action corresponding to the identified measurement target. This prevents the measurement of antioxidant levels for an incorrect target (e.g., an object) other than the user, thereby preventing incorrect information from being provided to the user.

[0092] FIGS. 5A and 5B are flowcharts illustrating operations of an electronic device according to an embodiment of the present disclosure. The processor (110) may perform at least one of the operations of FIGS. 5A and 5B . Instructions stored in the memory (120) of the electronic device (100), when executed by the processor (110) of the electronic device (100), may cause the electronic device (100) to perform the operations of FIGS. 5A and 5B .

[0093] In operation 510, the electronic device (100) can sequentially output light toward an object using a plurality of LEDs (410).

[0094] According to one embodiment, the electronic device (100) can sequentially output light through a plurality of LEDs (410) by turning the LEDs on and off one by one. For example, when an LED is turned on, outputs light, and then turns off, the next LED in the sequence can be turned on, outputs light, and then turned off.

[0095] In operation 520, the electronic device (100) can obtain absorbance data based on light received from multiple PDs (420).

[0096] For example, light output from an LED may be reflected by an object, and the reflected light may be received by at least one PD. The electronic device (100) may output light through the LED, and when the reflected light based on the output light is received by at least one PD, the electronic device may calculate the absorbance for each LED-PD pair based on the intensity of the received reflected light. The LED-PD pair may include an LED that outputs light and a PD that receives the reflected light.

[0097] According to an example, the electronic device (100) can obtain absorbance based on mathematical expression 1.

[0098] [Mathematical Formula 1]

[0099] Abs=-log(I / I0)

[0100] Here, Abs is the absorbance, I is the intensity of light received by the PD, and I0 is a preset value. I0 is a value previously measured using a standard reflector for the LED. For example, the standard reflector may be a reflector with uniform reflectivity (e.g., spectralon). I0 may be stored in the memory (120) during the manufacturing or initial use of the electronic device (100).

[0101] The electronic device (100) can calculate multiple absorbances for multiple LED-PD pairs and generate absorbance data including the multiple absorbances. The absorbance data can be replaced with expressions such as, for example, an absorbance spectrum, an absorbance signal pattern, etc. In the present disclosure, multiple absorbances for multiple LED-PD pairs can be obtained by considering the wavelength of the LED and multiple optical paths according to the positions of the LED and PD.

[0102] For example, multiple LED-PD pairs may be LED1(271-1)-PD1(281-1) pair, LED1(271-1)-PD3(281-3) pair, LED2(271-2)-PD1(281-1) pair, LED2(271-2)-PD3(281-3) pair, LED4(271-4)-PD1(281-1) pair, LED4(271-4)-PD3(281-3) pair, LED6(271-6)-PD1(281-1) pair, LED6(271-6)-PD3(281-3) pair, LED7(271-7)-PD1(281-1) pair, LED7(271-7)-PD2(281-2) pair, LED7(271-7)-PD3(281-3) pair, LED7(271-7)-PD4(281-4) pair, LED8(271-8)-PD1(281-1) pair, LED8(271-8)-PD2(281-2) pair, LED8(271-8)-PD3(281-3) pair, LED8(271-8)-PD4(281-4) pair, LED10(271-10)-PD1(281-1) pair, LED10(271-10)-PD2(281-2) pair, LED10(271-10)-PD3(281-3) pair, LED10(271-10)-PD4(281-4) pair, It may include a LED9(271-9)-PD1(281-1) pair, a LED9(271-9)-PD4(281-4) pair, a LED11(271-11)-PD2(281-2) pair, and a LED11(271-11)-PD3(281-3) pair. However, the present disclosure is not limited thereto, and the absorbance calculated for various LED-PDs may constitute absorbance data.

[0103] In operation 530, the electronic device (100) can identify whether the object is the user's skin using absorbance data and reference data stored in the memory (120), which will be described in more detail in operations 531, 532, 533, and 534.

[0104] In operation 531, the electronic device (100) can identify a similarity value between absorbance data and reference data.

[0105] Reference data may be stored in memory (120) during manufacturing or initial use of the electronic device (100).

[0106] For example, the reference data may be obtained by a device (e.g., referred to as a test device hereinafter) having the same specifications (or performance) as the electronic device (100). The same specifications may include that the number of LEDs, the specifications of the LEDs, the arrangement positions of the LEDs, the number of PDs, the specifications of the PDs, and the arrangement positions of the PDs are the same in the test device and the electronic device (100).

[0107] Hereinafter, the indices of the LED and PD of the test device are described as being the same as the indices of the LED and PD of the electronic device (100) (e.g., an LED placed at the same position as the LEDn (271-n) of the electronic device (100) in the test device is expressed as the LEDn (271-n) of the test device (e.g., n=1,2,....,13), and a PD placed at the same position as the PDm (281-n) of the electronic device (100) in the test device is expressed as the PDm (281-n) of the test device (m=1,...,4)).

[0108] The test device can obtain absorbance data using the same method as the electronic device (100). For example, the test device can sequentially output light toward a person's skin using multiple LEDs, and when the reflected light is received by multiple PDs, the test device can obtain multiple absorbances for multiple LED-PD pairs using the received light. The multiple LED-PD pairs may be the same as the multiple LED-PD pairs of the electronic device (100) described above. The test device can obtain absorbance data including multiple absorbances. When the above-described process is performed on multiple people, an absorbance data set including various absorbance data can be obtained. For example, the multiple people may include multiple people with different skin colors (e.g., multiple races). Reference data can be obtained based on the absorbance data set. For example, each of the multiple absorbances constituting the reference data can be obtained by calculating an average value of the multiple absorbances included in the absorbance data set for each LED-PD pair.

[0109] FIG. 6 illustrates an example of reference data according to an embodiment of the present disclosure.

[0110] Referring to FIG. 6, reference data (610) may include absorbance (Abs) for each LED-PD pair. The absorbance corresponding to the LED-PD pair may be an average value of multiple absorbances measured on the skin of multiple people using the LED-PD pair.

[0111] According to one example, the electronic device (100) can calculate a similarity value between absorbance data and reference data using cosine similarity. The similarity value can be replaced with an expression such as a cosine similarity index, for example. A method for calculating a similarity value using cosine similarity can be defined as in the following mathematical expression 2.

[0112] [Equation 2]

[0113]

[0114] Here, similarity is a similarity value, Ai is the absorbance for the ith LED-PD pair among the absorbance data, Bi is the absorbance for the ith LED-PD pair among the reference data, and n is the number of LED-PD pairs. The LED-PD pairs having the same index may be LED-PD pairs arranged at the same positions in the electronic device (100) and the test device. For example, the LEDn-PDm pair of the electronic device (100) and the LEDn-PDm pair of the test device may be LED-PD pairs having the same index (e.g., n=1,2,...,13, m=1,...,4).

[0115] In the above example, the similarity between the absorbance data and the reference data is calculated using the cosine similarity, but the present disclosure is not limited thereto. For example, an algorithm that calculates the similarity by analyzing the spectral difference, such as PCA, linear discriminant analysis, etc., may be used. In addition, various similarity calculation algorithms, such as Euclidean distance, Manhattan distance, cosine distance, Mahalanobis distance, Jaccard coefficient, extended Jaccard coefficient, Pearson's correlation coefficient, Spearman's correlation coefficient, etc., may be used.

[0116] In operation 532, the electronic device (100) can compare the similarity value with a preset value.

[0117] According to one embodiment, the electronic device (100) may compare a similarity value calculated based on cosine similarity with a preset value. The preset value may be set during the manufacturing or initial use of the electronic device (100). For example, the preset value may be 0.9.

[0118] Figure 7 shows simulation results comparing similarity values ​​according to an embodiment of the present disclosure.

[0119] Referring to FIG. 7, the cosine similarity value between absorbance data measured from the same skin area of ​​two people may be distributed within a range of 0.9 to 1 (e.g., 710 in FIG. 7). However, the cosine similarity value between absorbance data measured from human skin and an object (e.g., an object having a pantone skin tone (e.g., an inanimate object)) may be distributed within a range smaller than 0.9 (e.g., 720 in FIG. 7). Considering this, in the present disclosure, a reference value for identifying whether a measurement target is human skin or not through comparison of similarity values ​​may be set to 0.9. However, the present disclosure is not limited thereto, and may be set to various values ​​depending on the type of measurement target to be identified.

[0120] In steps 532-Y and 533, the electronic device (100) can identify the object as the user's skin based on a similarity value being greater than or equal to a preset value. For example, identifying the object as the user's skin may include identifying the object as human skin. The electronic device (100) can obtain an antioxidant value based on identifying the object as the user's skin. For example, if the electronic device (100) identifies the object as the user's skin, it can obtain absorbance data using the sensor (171) and obtain an antioxidant value using the absorbance data. The electronic device (100) can display the antioxidant value on a display (e.g., 140 of FIG. 1 , 220 of FIG. 3 ).

[0121] In steps 532-N and 534, the electronic device (100) may identify the object as not being the user's skin based on a similarity value being less than a preset value. For example, identifying the object as not being the user's skin may include that the object is not human skin or that the object is an object. Based on the identification that the object is not the user's skin, the electronic device (100) may display an error screen (e.g., a screen including a message indicating a measurement error) or visual information to guide re-measurement on a display (e.g., 140 of FIG. 1, 220 of FIG. 3).

[0122] FIGS. 8A, 8B, and 8C are drawings for explaining the operation of an electronic device according to an embodiment of the present disclosure.

[0123] Referring to FIG. 8a, the electronic device (100) may display a screen (810) for measuring the concentration of an antioxidant on the display (220), and in response to receiving a touch input for the GUI (811), may acquire absorbance data using a sensor (e.g., the biometric sensor (171) of FIG. 1, the sensor (171) of FIG. 4). Referring to FIG. 8b, the absorbance data (820) may include the absorbance (Abs) for each LED-PD pair for each LED-PD pair. The electronic device (100) may calculate a similarity value between the absorbance data (820) and reference data (e.g., 610 of FIG. 6). For example, the similarity value between the absorbance data (820) and the reference data (e.g., 610 of FIG. 6) may be 0.9. Referring to FIG. 8c, the electronic device (100) may perform antioxidant sensing in response to a similarity value exceeding a preset value. For example, the electronic device (100) may measure absorbance data using the sensor (171), obtain an antioxidant value using the measured absorbance data, and display the antioxidant value (830) on the display (220).

[0124] FIGS. 9A, 9B, and 9C are drawings for explaining the operation of an electronic device according to an embodiment of the present disclosure.

[0125] Referring to FIG. 9a, the electronic device (100) may display a screen (910) for measuring the concentration of an antioxidant on the display (220), and in response to receiving a touch input for the GUI (911), may acquire absorbance data using a sensor (e.g., the biosensor (171) of FIG. 1, the sensor (171) of FIG. 4). Referring to FIG. 9b, the absorbance data (920) may include the absorbance (Abs) for each LED-PD pair for each LED-PD pair. The electronic device (100) may calculate a similarity value between the absorbance data (920) and reference data (e.g., 610 of FIG. 6). For example, the similarity value between the absorbance data (920) and the reference data (e.g., 610 of FIG. 6) may be 0.55. Referring to FIG. 9c, in response to the similarity value being smaller than a preset value, the electronic device (100) may display a GUI (930) on the display (220) to guide re-measurement, such as “Please bring the watch into contact with your skin.”

[0126] Light irradiated onto a measurement target via an LED may pass through the inside of the measurement target's medium, be reflected, and be received by the PD. The signal level of the light detected by the PD may vary depending on the optical characteristics of the measurement target, such as the absorption coefficient, scattering coefficient, and anisotropy factor for each wavelength. Accordingly, absorbance data obtained by outputting light toward human skin (e.g., 820 in FIG. 8b) may exhibit different characteristics from absorbance data obtained by outputting light toward an object other than human skin (e.g., 920 in FIG. 9b). Accordingly, the present disclosure uses absorbance data to identify whether the measurement target corresponds to human skin, thereby preventing the antioxidant level from being measured for an incorrect object other than the user and preventing incorrect information from being provided to the user.

[0127] According to one embodiment, the electronic device (100) can identify a user using absorbance data. For example, the electronic device (100) can add identification information to absorbance data acquired from the user's skin and store the information in the memory (120). For example, the identification information can include information for distinguishing the user (e.g., a user ID, etc.). Thereafter, when absorbance data is acquired from the user's skin, the electronic device (100) can compare the acquired absorbance data with the absorbance data stored in the memory (120), identify absorbance data that matches the acquired absorbance data, and identify the user based on the identification information corresponding to the identified absorbance data. The electronic device (100) can provide a service corresponding to the identified user based on the user's identification.

[0128] According to one embodiment, the electronic device (100) may obtain an electrical signal through an electrode sensor (172) and identify whether the measurement target is the user's skin by using the electrical signal and absorbance data obtained through a biosensor (171).

[0129] As described above, an electronic device (100) according to one embodiment may include a sensor (171) including a plurality of LEDs and a plurality of PDs, a memory (120) storing instructions, and at least one processor (110). The instructions, when executed by the at least one processor, may cause the electronic device to output light toward an object using the plurality of LEDs, and in response to the output light being reflected by the object and received by the plurality of PDs, obtain absorbance data based on the received light, and identify whether the object is the user's skin based on the absorbance data and reference data stored in the memory. The absorbance data may include absorbance for an LED-PD pair corresponding to an LED that outputs light and a PD that receives reflected light based on the light output from the LED.

[0130] For example, the instructions, when executed by the at least one processor, may cause the electronic device to sequentially output light through the plurality of LEDs, and in response to the at least one PD receiving reflected light based on the light output from each LED, obtain an absorbance for each LED-PD pair based on the intensity of the reflected light received from each of the at least one PD, and obtain the absorbance data including the obtained plurality of absorbances.

[0131] For example, the instructions, when executed by the at least one processor, may cause the electronic device to identify a similarity value between the absorbance data and the reference data, and to identify whether the object is the user's skin based on the similarity value.

[0132] For example, the instructions, when executed by the at least one processor, may cause the electronic device to identify the object as being the user's skin based on the similarity value being greater than or equal to a preset value, and to identify the object as not being the user's skin based on the similarity value being less than the preset value.

[0133] For example, the instructions, when executed by the at least one processor, may cause the electronic device to obtain an antioxidant value based on the absorbance data based on the object being identified as the user's skin and display the antioxidant value on a display, and to display visual information on the display to guide re-measurement based on the object being identified as not the user's skin.

[0134] For example, the reference data may include a plurality of absorbances. Each of the plurality of absorbances included in the reference data may include an average value of a plurality of absorbances measured from a plurality of people using each of the plurality of LED-PD pairs.

[0135] For example, the plurality of lights output from the plurality of LEDs may include visible light and infrared light.

[0136] As described above, a method of an electronic device (100) including a sensor (171) including a plurality of LEDs and a plurality of PDs according to one embodiment may include an operation of outputting light toward an object using the plurality of LEDs, an operation of obtaining absorbance data based on the received light in response to the outputted light being reflected by the object and received by the plurality of PDs, and an operation of identifying whether the object is the user's skin based on the absorbance data and reference data stored in the memory. The absorbance data may include an absorbance for an LED-PD pair corresponding to an LED that outputted light and a PD that received reflected light based on the light output from the LED.

[0137] For example, the outputting operation may include an operation of sequentially outputting light through the plurality of LEDs. The obtaining operation may include an operation of obtaining an absorbance for each LED-PD pair based on the intensity of the reflected light received from each of the at least one PD in response to the reflected light based on the light output from each LED being received by at least one PD, and an operation of obtaining the absorbance data including the obtained plurality of absorbances.

[0138] For example, the identifying operation may include an operation of identifying a similarity value between the absorbance data and the reference data and an operation of identifying whether the object is the user's skin based on the similarity value.

[0139] For example, the identifying action may include an action of identifying the object as being the user's skin based on the similarity value being greater than or equal to a preset value and an action of identifying the object as not being the user's skin based on the similarity value being less than the preset value.

[0140] For example, a method according to one embodiment may further include obtaining an antioxidant value based on the absorbance data based on the object being identified as the user's skin and displaying the antioxidant value on a display, and displaying visual information on the display to guide re-measurement based on the object being identified as not the user's skin.

[0141] For example, the reference data may include a plurality of absorbances. Each of the plurality of absorbances included in the reference data may include an average value of a plurality of absorbances measured from a plurality of people using each of the plurality of LED-PD pairs.

[0142] For example, the plurality of lights output from the plurality of LEDs may include visible light and infrared light.

[0143] 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.

[0144] 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.

[0145] 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.

[0146] 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 an electronic device (100), A sensor (171) comprising multiple LEDs and multiple PDs; Memory (120) for storing instructions; and comprising at least one processor (110); The above instructions, when executed by the at least one processor, cause the electronic device to: Using the above multiple LEDs, light is output toward the object, In response to the output light being reflected by the object and received by the plurality of PDs, absorbance data is obtained based on the received light, Identifying whether the object is the user's skin based on the absorbance data and the reference data stored in the memory; The above absorbance data is, An electronic device comprising an absorbance for an LED-PD pair corresponding to an LED that outputs light and a PD that receives reflected light based on the light output from the LED.

2. In paragraph 1, The above instructions, when executed by the at least one processor, cause the electronic device to: Light is sequentially output through the above multiple LEDs, In response to the reception of reflected light based on light output from each LED at at least one PD, an absorbance for each LED-PD pair is obtained based on the intensity of the reflected light received at each of the at least one PDs, An electronic device for acquiring the absorbance data including the plurality of absorbances acquired above.

3. In paragraph 1 or 2, The above instructions, when executed by the at least one processor, cause the electronic device to: Identifying the similarity value between the above absorbance data and the above reference data, An electronic device that identifies whether the object is the user's skin based on the similarity value.

4. In paragraph 3, The above instructions, when executed by the at least one processor, cause the electronic device to: Identifying the object as the user's skin based on the similarity value being greater than or equal to a preset value; An electronic device that identifies the object as not being the user's skin based on the similarity value being less than the preset value.

5. In any one of paragraphs 1 to 4, The above instructions, when executed by the at least one processor, cause the electronic device to: Obtaining an antioxidant value based on the absorbance data based on the object being identified as the user's skin and displaying the antioxidant value on the display; An electronic device that displays visual information on the display to guide re-measurement based on the object being identified as not being the user's skin.

6. In any one of paragraphs 1 to 5, The above reference data includes multiple absorbances, An electronic device in which each of the plurality of absorbances included in the above reference data includes an average value of a plurality of absorbances measured from a plurality of people using each of the plurality of LED-PD pairs.

7. In any one of paragraphs 1 to 6, An electronic device in which a plurality of lights output from the plurality of LEDs include visible light and infrared light.

8. In a method of an electronic device (100) including a sensor (171) including a plurality of LEDs and a plurality of PDs, An operation (510) of outputting light toward an object using the above plurality of LEDs; An operation (520) of obtaining absorbance data based on the received light in response to the output light being reflected by the object and received by the plurality of PDs; and An operation (530) for identifying whether the object is the user's skin based on the absorbance data and the reference data stored in the memory; The above absorbance data is, A method comprising absorbance for an LED-PD pair corresponding to an LED that outputs light and a PD that receives reflected light based on the light output from the LED.

9. In paragraph 8, The above output action is, It includes an operation of sequentially outputting light through the above plurality of LEDs, The above acquisition action is, In response to the reception of at least one PD based on the reflected light emitted from each LED, an operation of obtaining an absorbance for each LED-PD pair based on the intensity of the reflected light received from each of the at least one PD; and A method comprising: an operation of acquiring the absorbance data including the plurality of absorbances acquired above; 10. In paragraph 8 or 9, The above identifying action is, An operation of identifying a similarity value between the absorbance data and the reference data; and A method comprising: an operation of identifying whether the object is the user's skin based on the similarity value; 11. In paragraph 10, The above identifying action is, An operation of identifying the object as the user's skin based on the similarity value being greater than or equal to a preset value; and A method comprising: identifying the object as not being the user's skin based on a similarity value being less than the preset value; 12. In any one of paragraphs 8 to 11, An operation of obtaining an antioxidant value based on the absorbance data and displaying the antioxidant value on a display based on the object being identified as the user's skin; and A method further comprising: displaying visual information on the display to guide re-measurement based on the object being identified as not being the user's skin; 13. In any one of paragraphs 8 to 12, The above reference data includes multiple absorbances, A method in which each of the plurality of absorbances included in the above reference data includes an average value of a plurality of absorbances measured from a plurality of people using each of the plurality of LED-PD pairs.

14. In any one of paragraphs 8 to 13, A method in which the plurality of lights output from the plurality of LEDs include visible light and infrared light.

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