Wearable apparatus, control method for wearable apparatus, and program

Abstract

To provide a wearable apparatus which executes processing of a predetermined function by selecting an antenna suitable for each state in accordance with whether it is mounted on the arm of a user, and a control method therefor.SOLUTION: A portable radio device 10 comprises: a case; a first antenna (patch antenna) including an antenna having a characteristic that reception sensitivity is not reduced in a state where an own apparatus is mounted on a human body rather than a state where the apparatus is not mounted on the human body; a second antenna (monopole antenna) including an antenna having a characteristic that reception sensitivity is reduced in the state where the own apparatus is mounted on the human body rather than the state where the own apparatus is not mounted on the human body; a sensor section 1500 for detecting the state where the own apparatus is mounted on the human body; and a control section 1100 for executing processing of the predetermined function of the own apparatus. The control section executes the processing of the predetermined function using the first antenna in the case where it is detected that the own apparatus is mounted on the human body and using the second antenna in the case where it is not detected that the own apparatus is mounted on the human body.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a wearable device, a control method for a wearable device, and a program. [Background technology]

[0002] Various electronic devices have been developed and are being used as wearable devices worn on the human body, such as wristwatch-type smart watches. When such electronic devices transmit and receive data between external devices via wireless communication, the effect of the human body on the reception sensitivity of the antenna that receives radio waves becomes an issue. For example, Patent Document 1 describes a portable wireless device worn on the body that is used in such a way that multiple antennas are provided at different distances from a microphone that receives audio signals, and the multiple antennas are switched based on the level of the audio signal, in order to reduce the deterioration of antenna performance due to the proximity of the head. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-92643 A Summary of the Invention [Problem to be solved by the invention]

[0004] There are various types of antennas, and it is known that in the case of electronic devices worn on the human body, the reception characteristics differ depending on the type of antenna when it is close to the body surface. However, while the portable wireless device described in Patent Document 1 takes into consideration the deterioration of antenna performance due to the proximity of the head, it does not deal with antenna types whose antenna performance changes when the device itself is close to the body surface and when it is far away.

[0005] An object of the present invention is to provide a wearable device, the functions of which can be stably utilized both when the device is being worn and when the device is not being worn, and a control method and program for the wearable device. [Means for solving the problem]

[0006] A wearable device according to one embodiment of the present invention comprises a hollow main body case, a first antenna unit provided inside the main body case and including an antenna having a characteristic that the receiving sensitivity is not reduced when the device is worn on a human body compared to when it is not worn on the human body, a second antenna unit provided inside the main body case and including an antenna having a characteristic that the receiving sensitivity is reduced when the device is worn on a human body compared to when it is not worn on the human body, a sensor unit that detects that the device is worn on a human body, and a control unit that executes processing of a predetermined function of the device, wherein the control unit executes processing of the predetermined function using the first antenna unit when the sensor unit detects that the device is worn on a human body, and executes processing of the predetermined function using the second antenna unit when the sensor unit does not detect that the device is worn on a human body. Effect of the Invention

[0007] According to the present invention, the functions of a wearable device can be stably utilized both when the device is worn and when the device is not worn. [Brief description of the drawings]

[0008] [Figure 1] 1 is a schematic front view of a portable wireless device according to an embodiment of the present invention; [Diagram 2] 1 is a schematic side view of a portable wireless device according to an embodiment of the present invention; [Diagram 3] 1 is a schematic front view showing, in perspective, a portion of a portable wireless device according to an embodiment of the present invention; [Figure 4] 1 is a schematic side view showing a cross section of a portion of a portable wireless device according to an embodiment of the present invention; [Diagram 5]1 is a schematic diagram showing an example of a hardware configuration and functional blocks of a portable wireless device according to an embodiment of the present invention; [Figure 6] 10 is a flowchart illustrating a receiving mode switching process in one embodiment of the present invention. [Figure 7] 10 is a flowchart illustrating a receiving mode switching process in one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, the present invention will be described based on an embodiment with reference to the accompanying drawings.

[0010] <Configuration of portable wireless device> First, the configuration of the portable wireless device according to this embodiment will be described with reference to Figs. 1 to 4. Fig. 1 is a schematic front view of the portable wireless device according to this embodiment, and Figs. 2 to 4 are a schematic side view corresponding to Fig. 1, a schematic front view showing a part of the portable wireless device in perspective, and a schematic side view showing a part of the portable wireless device in cross section, respectively. The portable wireless device 10 according to this embodiment is configured as a wristwatch-type wearable device that is worn by a user on the forearm. The portable wireless device 10 has standard time display and timing functions such as time display, alarm, and timer. The portable wireless device 10 may also be provided with various other measurement functions including temperature measurement, air pressure measurement, heart rate measurement, and activity measurement such as a pedometer. Alternatively, the portable wireless device 10 may be an electronic device such as an activity meter that does not have a time display function as a watch.

[0011] As shown in FIG. 1, a mobile wireless device 10 receives signals (hereinafter referred to as "satellite signals") transmitted from positioning satellites 20 such as Global Positioning System (GPS) satellites, and can automatically execute processes such as time correction using the time data contained in the satellite signals. The mobile wireless device 10 can also receive time data held by other communication terminals such as a smartphone 30 by communicating with the other communication terminals via wireless communication such as Bluetooth (registered trademark) Low Energy (BLE). Due to its nature, it is difficult to receive accurate satellite signals when the mobile wireless device 10 is located inside a building. In such cases, the mobile wireless device 10 obtains time data from other communication terminals nearby.

[0012] A specific example of the configuration of a portable wireless device 10 will be described with reference to Figures 1 and 2. The portable wireless device 10 has a case 11 having a flat, hollow cylindrical shape, and a bezel 12, which is an annular member, is provided on the peripheral surface of the case 11. The bezel 12 is made of a conductive material formed into a thin ring shape, and constitutes a conductor for one of the antennas of the portable wireless device 10.

[0013] A display panel 14 for displaying data such as the time is provided on the front of the case 11 and is protected by a windshield 17 such as glass. The display panel 14 is, for example, a liquid crystal display panel. In wearable devices such as activity meters that do not have a time display function, the display panel 14 may be omitted. The display panel 14 may be provided with a solar panel for generating power to drive the portable wireless device 10.

[0014] Buttons 15 for user operation are provided on the side of case 11. In this embodiment, an example is shown in which buttons 15 are provided in four places around case 11, but the number and arrangement of buttons 15 may be arbitrary. Various functions such as switching functions and lighting display panel 14 are assigned to buttons 15 according to the functions of mobile wireless device 10.

[0015] The back side of the case 11 is closed by a back cover 13 made of a conductor such as metal. A belt 16 is attached to the opposing side of the case 11, so that the user can wear the portable wireless device 10 on his / her arm. The portable wireless device 10 is not limited to a wristwatch type as in this embodiment, but can be configured so as to be wearable on the surface of the user's body by appropriate means for functions such as activity measurement and vital sign measurement such as heart rate. The shape of the case 11 is also not limited to that of this embodiment, and can be appropriately shaped based on the application, design requirements, etc. The term "wearable on the surface of the body" includes not only the case where the back cover 13 of the case 11 directly contacts the surface of the user's body, in this case the skin of the forearm, but also the case where the case is indirectly contacted with the surface of the user's body via a thin cloth of clothing, etc.

[0016] Next, the internal configuration of the case 11 of the mobile wireless device 10 will be described with reference to Fig. 3 and Fig. 4. Fig. 3 is a schematic view of the inside of the case 11 seen from the front of the mobile wireless device 10, and Fig. 4 is a schematic view showing a side cross section of the case 11. Inside the case 11, there are provided a first antenna ANT1 for receiving satellite signals transmitted from positioning satellites such as GPS satellites, and a second antenna ANT2 for transmitting and receiving radio waves to and from other communication terminals such as smartphones. As will be described later, the first antenna ANT1, which is the first antenna unit of this embodiment, is configured as a patch antenna, and the second antenna ANT2, which is the second antenna unit, is configured as a monopole antenna.

[0017] A circuit board 101 having a pattern for mounting and electrically connecting various IC chips for signal processing and data calculation, passive components, etc. is provided inside the case 11. As shown in Fig. 3, a satellite signal processing chip 102 and a BLE signal processing chip 103 are mounted on the circuit board 101. In addition, a monopole antenna 104 having one element of a dipole antenna as ground is formed by a circuit pattern on the circuit board 101 and is connected to the BLE signal processing chip 103.

[0018] The satellite signal processing chip 102 on the circuit board 101 is electrically connected to the bezel 12 by a power supply conductor 105 formed of a metal wire or the like. In addition, the ground pattern provided on the circuit board 101 is electrically connected to the back cover 13 by a connection conductor 106 such as a metal wire.

[0019] It should be noted that the illustrations in Figures 1 to 4 are simplified for the purpose of aiding in understanding the embodiments of the present invention, and the actual shape and internal configuration of the mobile wireless terminal 10 are not limited by the illustrations in these drawings.

[0020] Also provided inside case 11 is a sensor chip 107 serving as a sensor unit used to determine whether the user is wearing mobile wireless device 10 and whether mobile wireless device 10 is indoors or outdoors. Typical examples of sensor chip 107 include an acceleration sensor and a charging current sensor, but the present invention is not limited to these. Furthermore, the configuration and arrangement of the sensor unit are not limited to the example shown in the figure.

[0021] Also provided within case 11 is a secondary battery that is charged by power generated by a solar panel provided on display panel 14.

[0022] <Configuration of first antenna ANT1> In this embodiment, the first antenna ANT1 is configured as, for example, a patch antenna. As is known, a patch antenna is configured of two conductive plates sandwiching a dielectric layer. One of the conductive plates constituting the patch antenna is connected to the ground, and the other conductive plate serves as an antenna conductor that receives radio waves. In the case of a patch antenna, the larger the area of ​​the ground to which it is connected, the higher the reception sensitivity. In this embodiment, the back cover 13 and the human body function as part of the ground, so that in the patch antenna, the reception sensitivity is better when one of the conductive plates connected to the ground is close to or in contact with the body surface of the human body. This corresponds to the case where the mobile wireless device 10 of this embodiment is worn on the arm.

[0023] The first antenna ANT1 as a patch antenna in this embodiment is composed of an annular bezel 12 and back cover 13 forming an antenna conductor, and a space including an intervening material between the bezel 12 and back cover 13 corresponding to a dielectric layer. The bezel 12 is electrically connected to a satellite signal processing chip 102 installed in the case 11 by a power supply conductor 105. Satellite signals received by the bezel 12 are input to the satellite signal processing chip 102 via the power supply conductor 105. When the user wears the mobile wireless device 10 on his / her arm, the back cover 13 comes into contact with the skin of the arm, resulting in an effect of expanding the ground area. For this reason, the reception sensitivity of the first antenna ANT1 that receives satellite signals is better when the user wears the mobile wireless device 10, and it is preferable to receive satellite signals in this state.

[0024] In this embodiment, the first antenna ANT1 receives satellite signals from GPS satellites, but may receive satellite signals from other positioning satellite systems.

[0025] In addition, since a patch antenna has higher performance than a monopole antenna described later, it is suitable for receiving weak radio waves such as satellite signals. The patch antenna may be configured by a combination of the bezel 12, the back cover 13, and their intermediate parts as in this embodiment, or a small patch antenna chip may be installed inside the case 11.

[0026] <Configuration of second antenna ANT2> The second antenna ANT2 in this embodiment is configured as a monopole antenna 104 formed as a pattern on the circuit board 101. In this embodiment, the monopole antenna 104 is used for wireless communication by BLE in the 2.4 GHz band, so the monopole antenna 104 is formed as a pattern of an appropriate shape, such as a straight line with a length of 1 / 4 wavelength, a meandering shape, or the like. Alternatively, an inverted L-shaped antenna or an inverted F-shaped antenna may be used as the monopole antenna 104. The second antenna ANT2 by the monopole antenna 104 has a characteristic that, like a normal antenna, when it is close to or in contact with the human body, the reception sensitivity decreases due to the radio wave absorption or shielding effect of the human body. Therefore, it is preferable to perform data transmission and reception by BLE using the second antenna ANT2 when the mobile wireless device 10 is not attached to the human body.

[0027] In this embodiment, a patch antenna is used to receive satellite signals and a monopole antenna is used for wireless communication by BLE, but the antenna type can be changed as appropriate, for example, a monopole antenna can be used to receive satellite signals and a patch antenna can be used for wireless communication by BLE, etc. The present invention can be applied according to the effect of the human body on the antenna type to be applied.

[0028] <Functions of the portable wireless device 10 and examples of hardware configurations for implementing those functions> Next, functions of the mobile wireless device 10 and an example of a hardware configuration for realizing the functions will be described with reference to Fig. 5. The mobile wireless device 10 includes a control unit 1100, a storage unit 1200, an input / output unit 1300, a communication unit 1400, a sensor unit 1500, and a GNSS (Global Navigation Satellite System) unit 1600.

[0029] The control unit 1100 is a processor that performs various calculations, controls, and other processes required for the operation of the mobile wireless device 10, and is mounted on the circuit board 101 as an IC chip or the like.

[0030] The storage unit 1200 stores various programs executed by the processor constituting the control unit 1100 and data used when the programs are executed, and also functions as a work area temporarily used in performing various processes. The storage unit 1200 is configured as, for example, various memory chips equipped with non-volatile memory and volatile memory.

[0031] The input / output unit 1300 includes an input unit that accepts user operations such as the button 15 illustrated in FIG. 1 and a crown (not shown), a display panel 14 configured with an LCD or the like, and an output unit including a vibration element, a sound-producing element, etc. (not shown).

[0032] The communication unit 1400 controls communication between the mobile wireless device 10 and other communication terminals such as the smartphone 30. In this embodiment, the communication unit 1400 is configured by, for example, a wireless communication chip for performing wireless communication conforming to the BLE communication standard. The communication unit 1400 may be configured to enable wireless communication processing based on other communication standards such as Wi-Fi (registered trademark) (Wireless Fidelity) and NFC (Near Field Communication) other than BLE.

[0033] The sensor unit 1500 includes a sensor that provides data for determining whether the user of the portable wireless device 10 is wearing the portable wireless device 10, and a sensor that provides data for determining whether the portable wireless device 10 is inside or outside a building. Examples of sensors for determining whether the portable wireless device 10 is being worn include an acceleration sensor for detecting the swing of the user's arm, a proximity sensor for detecting the proximity of the case 11 to the surface of the user's body, and a heartbeat sensor for detecting the heartbeat from the blood flow in the user's arm. Examples of sensors for detecting whether the portable wireless device 10 is inside or outside include an output charging current sensor of a solar cell for charging a secondary battery that is the driving source of the portable wireless device 10, an illuminance sensor for detecting outdoor light, and an ultraviolet sensor. Which of these sensors is to be used may be determined according to the design specifications of the wireless portable device 10. In addition, the sensor unit 1500 may also be provided with a geomagnetic sensor, a pressure sensor, a temperature sensor, and the like for collecting information on the surrounding environment of the portable wireless device 10.

[0034] The GNSS unit 1600 has a function of acquiring time information and position information from satellite signals received from positioning satellites such as GPS satellites. In this embodiment, the GNSS unit 1600 extracts data representing time information from the satellite signals received from GPS satellites, and makes the data available for use in correcting the time of the portable wireless device 10.

[0035] Next, a description will be given of functions realized by the control unit 1100 of the mobile wireless device 10. As illustrated in Fig. 5, the control unit 1100 of this embodiment has a wearing determination unit 1110, an outdoor / indoor determination unit 1120, a clock control unit 1130, a reception switching unit 1140, and an input / output control unit 1150. The functional units provided in the control unit 1100 are not limited to these, and may be changed or added as appropriate depending on the functions of the mobile wireless device 10.

[0036] The wearing determination unit 1110 has a function of determining whether or not the mobile wireless device 10 is worn on the user's arm based on the output data from the sensor unit 1500. For example, when the output data from the acceleration sensor shows a predetermined temporal variation, it is determined that the mobile wireless device 10 is worn because the swing of the user's arm is detected. When the proximity sensor outputs data indicating the proximity to an object, or when the heart rate sensor outputs data indicating the heart rate based on the blood flow in the user's arm, it is also determined that the mobile wireless device 10 is worn on the user's arm. When no output data from the sensors is detected, the wearing determination unit 1110 determines that the wireless mobile device 10 is not worn on the user's arm.

[0037] The outdoor / indoor determination unit 1120 has a function of determining whether the mobile wireless device 10 is indoors or outdoors based on the output data from the sensor unit 1500. For example, if data is output indicating that the charging current from the solar panel exceeds a predetermined threshold, if output data from the ultraviolet sensor exceeds the predetermined threshold and data is output indicating that the mobile wireless device 10 is receiving ultraviolet light exceeding a predetermined amount, the outdoor / indoor determination unit 1120 determines that the mobile wireless device 10 is located outdoors receiving a predetermined amount of external light. If no output data from the sensor is detected, the outdoor / indoor determination unit 1120 determines that the mobile wireless device 10 is located indoors.

[0038] When the outdoor / indoor determination unit 1120 determines that it is nighttime based on the time information, it may change the conditions for the outdoor / indoor determination so that it determines that it is indoors if it determines that a certain amount of light is received, based on the condition that indoors is brighter than outdoors due to lighting.

[0039] The clock control unit 1130 has a function of controlling the clock function of the mobile wireless device 10. Specifically, the functions include controlling the time display on the display panel 14 based on time data stored internally, switching functions based on the user's operation input of the button 15, and correcting the internal time data based on time data acquired via the communication unit 1400 and the GNSS unit 1600.

[0040] The reception switching unit 1140 has the function of determining whether to receive external time data from a satellite signal via the patch antenna, which is the first antenna ANT1, or from a wireless communication signal via the monopole antenna, which is the second antenna ANT2, and switching the reception circuit including the antenna, based on the determination result by the wearing determination unit 1110 of whether the user is wearing the portable wireless device 10 or not, and the determination result by the outdoor / indoor determination unit 1120 of whether the portable wireless device 10 is located outdoors or indoors.

[0041] The input / output control unit 1150 has a function of controlling the exchange of input / output data between the control unit 1100 and the storage unit 1200, the input / output unit 1300, the communication unit 1400, the sensor unit 1500, and the GNSS unit 1600. For example, the input / output control unit 1150 has a function of executing a process of transferring time data from the communication unit 1400 and the GNSS unit 1600 to the clock control unit 1130, a process of transferring output data from the sensor unit 1500 to the wearing determination unit 1110 and the outdoor / indoor determination unit 1120, and the like.

[0042] <Time correction function in this embodiment> Next, the time adjustment function of the portable wireless device 10 of this embodiment will be described. Figures 6 and 7 are flowcharts showing example flows of the time adjustment process executed in the portable wireless device 10 of this embodiment. The time adjustment function achieved by the example processing flows shown in Figures 6 and 7 is basically the same, but the order in which the process of determining whether the portable wireless device 10 is being worn or not and the process of determining whether the device is outdoors or indoors are executed is different.

[0043] <Example 1> First, the time adjustment process according to one embodiment will be described with reference to Fig. 6. The time adjustment process shown in Fig. 6 is mainly executed by the wearing determination unit 1110, the outdoor / indoor determination unit 1120, and the reception switch unit 1140 of the mobile wireless device 10.

[0044] The time adjustment process flow in Figure 6 is executed when the user selects the time adjustment function after the mobile wireless device 10 is powered on and begins operation. Selection of the time adjustment function by the user can be assigned to the operation of button 15.

[0045] In step S10, wearing determination section 1110 of control section 1100 determines whether the user is wearing portable wireless device 10 on the arm, based on output data from sensor section 1500. If it is determined that the user is wearing portable wireless device 10 (S10, YES), then in step S11, outdoor / indoor determination section 1120 determines whether portable wireless device 10 is outdoors or indoors, based on output data from sensor section 1500. If it is determined that portable wireless device 10 is outdoors (S11, YES), then in step S12, reception switching section 1140 selects the patch antenna, which is the first antenna ANT1, to receive satellite signals outdoors. In step S13, the satellite signals are received by the patch antenna, which uses bezel 12 as an antenna conductor, and time data is obtained from the received satellite signals. The time data is transferred to watch control section 1130, and the internal time data is corrected.

[0046] Next, the time adjustment process flow is suspended in step S16 until a predetermined time has elapsed (S16, NO), and once the predetermined time has elapsed, the process returns to step S10 (S16, YES). The predetermined time in step S16 defines the time interval at which the time adjustment is executed.

[0047] In step S11, if the outdoor / indoor determination unit 1120 determines that the mobile wireless device 10 is not outdoors, i.e., is indoors (S11, NO), the reception switching unit 1140 does not select an antenna and moves the process to step S16. If the outdoor / indoor determination unit 1120 determines that the mobile wireless device 10 is indoors (S11, NO), the process may move to step S16 after displaying or announcing a notification such as "Please remove your watch if you want to adjust the time." If the user is wearing the mobile wireless device 10 on his / her arm, the first antenna ANT1, which is a patch antenna that improves reception sensitivity by the same effect as when the ground is expanded, is selected, but because the mobile wireless device 10 is indoors and cannot receive satellite signals, satellite signals are not received and time adjustment at that timing is skipped.

[0048] In step S10, if the wearing determination unit 1110 determines that the user is not wearing the portable wireless device 10 (S10, NO), in step S14, the reception switching unit 1140 selects the second antenna ANT2, which employs a monopole antenna that has better reception sensitivity when separated from the human body.

[0049] In step S15, time data is acquired via BLE wireless communication using the monopole antenna with another communications terminal such as the smartphone 30. The time data is transferred to the watch control unit 1130, which then corrects the internal time data. The time adjustment process then waits for the next timing to adjust the time in step S16.

[0050] According to the portable wireless device 10 of one embodiment described above, it is possible to receive time data by selecting an antenna appropriate for each state depending on whether the portable wireless device 10 is worn on the user's wrist or not, thereby reducing the risk of failing to receive time data due to poor reception sensitivity and making it possible to perform time adjustment more reliably.

[0051] Furthermore, if it is determined that the portable wireless device 10 is indoors, the risk of reception failure is reduced by not obtaining time data by receiving satellite signals.

[0052] <Example 2> Next, a time adjustment process according to another embodiment will be described with reference to Fig. 7. The time adjustment process shown in Fig. 7 is mainly executed by the wearing determination section 1110, the outdoor / indoor determination section 1120, and the reception switching section 1140 of the portable wireless device 10, similar to the process shown in Fig. 6. The embodiment of Fig. 7 differs in the order in which the wearing determination and outdoor / indoor determination of the portable wireless device 10 are executed, but the process provides substantially the same functions.

[0053] The time adjustment process flow in FIG. 7 begins when the mobile wireless device 10 is turned on and begins operation, and continues while the mobile wireless device 10 is in operation.

[0054] First, in step S20, outdoor / indoor determination section 1120 determines whether portable wireless device 10 is outdoors or indoors based on output data from sensor section 1500. If it is determined that portable wireless device 10 is outdoors (S20, YES), then in step S21, wearing determination section 1110 of control section 1100 determines whether the user is wearing portable wireless device 10 on the arm based on output data from sensor section 1500. If it is determined that the user is wearing portable wireless device 10 (S21, YES), then in step S22, reception switching section 1140 selects the patch antenna, which is the first antenna ANT1, to receive satellite signals outdoors. In step S23, the satellite signals are received by the patch antenna using bezel 12 as the antenna conductor, and time data is obtained from the received satellite signals. The time data is transferred to clock control section 1130, and the internal time data is corrected.

[0055] Next, the time adjustment process flow is suspended in step S27 until a predetermined time has elapsed (S27, NO), and once the predetermined time has elapsed, the process returns to step S10 (S27, YES). The predetermined time in step S27 defines the time interval at which the time adjustment is executed.

[0056] If in step S21 the wearing determination unit 1110 determines that the user is not wearing the mobile wireless device 10 (S21, NO), then because the mobile wireless device 10 is not being worn and sufficient reception sensitivity cannot be obtained by the first antenna ANT1, which is a patch antenna, satellite signals are not received and time adjustment at that timing is skipped, and processing proceeds to step S27 to wait for the next timing to adjust the time. Note that if the wearing determination unit 1110 determines that the user is not wearing the mobile wireless device 10 (S21, NO), processing may proceed to step S25 as described below and the second antenna ANT2 is selected.

[0057] On the other hand, in step S20, if the outdoor / indoor determination unit 1120 determines that the mobile wireless device 10 is not outdoors, i.e., is indoors (S20, NO), in step S24, the wearing determination unit 1110 of the control unit 1100 determines whether the user is wearing the mobile wireless device 10 on the arm based on the output data from the sensor unit 1500. If it is determined that the user is wearing the mobile wireless device 10 (S24, YES), the monopole antenna as the second antenna ANT2 that performs wireless communication with other communication terminals such as the smartphone 30 indoors by BLE is close to the human body and does not have sufficient reception sensitivity, so wireless communication by BLE is not performed and time adjustment at that timing is skipped, and the process proceeds to step S27 to wait for the next timing to adjust the time. Note that if the wearing determination unit 1110 determines that the user is wearing the mobile wireless device 10 (S24, YES), the process may proceed to step S27 after displaying or announcing a notice such as "Please remove the watch if you want to adjust the time."

[0058] In step S24, if the wearing determination unit 1110 determines that the user is not wearing the mobile wireless device 10 (S24, NO), in step S25, the reception switching unit 1140 selects the second antenna ANT2 which employs a monopole antenna 104 having better reception sensitivity when separated from the human body.

[0059] In step S26, time data is acquired via BLE wireless communication using the monopole antenna with another communications terminal such as the smartphone 30. The time data is transferred to the watch control unit 1130, which then adjusts the internal time data. The time adjustment process then waits for the next timing to adjust the time in step S27.

[0060] According to the portable wireless device 10 according to the other embodiment described above, it is possible to obtain the same effects as those of the above embodiment.

[0061] As described above, the portable wireless device 10 according to this embodiment comprises a hollow case 11, a first antenna ANT1 provided inside the case 11 and including an antenna having a characteristic that the receiving sensitivity is not reduced when the device is worn on the human body compared to when it is not worn on the human body, a second antenna ANT2 provided inside the case 11 and including an antenna having a characteristic that the receiving sensitivity is reduced when the device is worn on the human body compared to when it is not worn on the human body, a sensor unit 1500 that detects that the device is worn on the human body, and a control unit 1100 that executes processing of a predetermined function of the device, and when the sensor unit 1500 detects that the device is worn on the human body, the control unit 1100 executes processing of the predetermined function using the first antenna ANT1, and when the sensor unit 1500 does not detect that the device is worn on the human body, the control unit 1100 executes processing of the predetermined function using the second antenna ANT2.

[0062] In this way, the antenna appropriate for each state can be selected depending on whether the portable wireless device 10 is worn on the user's wrist, and the processing of the specified function can be executed, thereby reducing the risk of the specified function failing to be processed when reception sensitivity is poor, and the specified function can be processed more reliably.

[0063] The predetermined functions of the control unit 1100 may be, for example, a function for correcting the time data used in the mobile wireless device 10, acquiring time data and time difference data, and acquiring location information.

[0064] In this way, an antenna suitable for each state can be selected depending on whether or not the mobile wireless device 10 is worn on the user's wrist, making it possible to adjust the time more reliably.

[0065] The sensor unit 1500 may be capable of determining whether the device is outdoors or indoors, and when the sensor unit 1500 detects that the device is attached to a human body and determines that the device is outdoors, the control unit 1100 may acquire the time data by receiving radio waves from a positioning satellite using the first antenna ANT1, and when the sensor unit 1500 does not detect that the device is attached to a human body, the control unit 1100 may acquire the time data by wireless communication from another communication terminal using the second antenna ANT2.

[0066] In this way, the time can be adjusted more reliably depending on whether the mobile wireless device 10 is indoors or outdoors.

[0067] When the sensor unit 1500 detects that the device is attached to a human body and determines that the device is indoors, an alert may be issued to urge the user to move the device away from the human body.

[0068] In this way, the user of the mobile wireless device 10 can be encouraged to take action to improve the reception sensitivity of the second antenna ANT2.

[0069] The sensor unit 1500 may be capable of determining whether the device is outdoors or indoors, and when the sensor unit 1500 determines that the device is outdoors and detects that the device is worn on a human body, the control unit 1500 may acquire the time data by receiving radio waves from a positioning satellite using the first antenna ANT1, and when the sensor unit 1500 determines that the device is indoors and does not detect that the device is worn on a human body, the control unit 1500 may acquire the time data by wireless communication from another communication terminal using the second antenna ANT2.

[0070] In this way, the time can be adjusted more reliably depending on whether the mobile wireless device 10 is indoors or outdoors.

[0071] When the sensor unit 1500 determines that the device is outdoors and does not detect that the device is worn on a human body, the control unit 1100 may obtain the time data from another communication terminal via wireless communication using the second antenna ANT2.

[0072] In this way, even when the device itself is outdoors, it is possible to obtain time data from other communication terminals through wireless communication.

[0073] The back cover 13 of the main body case 11 may be set to the same potential as the ground.

[0074] In this way, the back cover 13 can be used as part of the ground, thereby improving the reception sensitivity of the first antenna ANT1.

[0075] The first antenna ANT1 and the second antenna ANT2 may receive a radio signal including time data and transfer the radio signal to the control unit 1100.

[0076] In this way, the mobile wireless device 10 can receive radio signals more reliably by using either the first antenna ANT1 or the second antenna ANT2, which have different reception characteristics.

[0077] The first antenna ANT1 may comprise a patch antenna.

[0078] In this way, the reception sensitivity is improved when the user is wearing the mobile wireless device 10, and radio waves can be received more reliably.

[0079] The second antenna ANT2 may comprise a monopole antenna.

[0080] In this way, the reception sensitivity is improved when the user is not wearing the mobile wireless device 10 compared to when the user is wearing the device, and radio waves can be received more reliably.

[0081] Also, according to the present embodiment, there is provided a control method for a portable wireless device 10 that can be used while attached to a human body, the portable wireless device 10 comprising a first antenna ANT1 having an antenna whose receiving sensitivity is not reduced or is improved when the portable wireless device 10 is brought close to the human body, a second antenna ANT2 having an antenna whose receiving sensitivity is improved when the portable wireless device 10 is brought close to the human body, a sensor unit 1500 that detects that the portable wireless device 10 is attached to the human body, and a control unit 1100 that executes processing of a predetermined function of the portable wireless device 10, wherein the control unit 1100 executes processing of the predetermined function using the first antenna ANT1 when the sensor unit 1500 detects that the portable wireless device 10 is attached to the human body, and executes processing of the predetermined function using the second antenna ANT2 when the sensor unit 1500 does not detect that the portable wireless device 10 is attached to the human body.

[0082] In this way, it is possible to achieve the same effects as those achieved by the mobile wireless device 10 according to the present embodiment described above.

[0083] This embodiment also includes a program for causing a processor to execute the control method for the mobile wireless device 10 described above.

[0084] The above-mentioned series of processes can be executed by hardware or software. In other words, the functional configuration of FIG. 5 is merely an example and is not particularly limited. That is, it is sufficient that the mobile wireless device 10 has a function capable of executing the above-mentioned series of processes as a whole, and the type of functional block used to realize this function is not particularly limited to the example of FIG. 5. Also, one functional block may be configured by a single piece of hardware, a single piece of software, or a combination of these. The functional configuration in this embodiment is realized by a processor that executes arithmetic processing, and processors that can be used in this embodiment include those configured by various processing devices alone, such as single processors, multiprocessors, and multicore processors, as well as those in which these various processing devices are combined with processing circuits, such as ASICs (Application Specific Integrated Circuits) and FPGAs (Field-Programmable Gate Arrays).

[0085] In this specification, the steps describing the program to be executed by the control unit 1100 include not only processes that are performed chronologically according to the order, but also processes that are not necessarily performed chronologically but are performed in parallel or individually.

[0086] Although several embodiments of the present invention have been described above, these embodiments are merely illustrative and do not limit the technical scope of the present invention. The present invention can take various other embodiments, and it is also possible to combine the configurations of the above-mentioned embodiments and the modified examples. Furthermore, various modifications such as omissions and substitutions can be made without departing from the gist of the present invention. These embodiments and their modifications are included in the scope and gist of the invention described in this specification, etc., and are included in the scope of the invention described in the claims and their equivalents. [Explanation of symbols]

[0087] 10 Portable radio equipment 11 Cases 12 Bezel 13 Back cover 101 Circuit Board 102 Satellite signal processing chip 103 BLE signal processing chip 104 Monopole Antenna 1100 Control section 1110 Wearing Judgment Section 1120 Outdoor / Indoor Judgment Department 1130 Clock control unit 1140 Reception switch 1400 Communications Department 1500 Sensor unit 1600 GNSS Department ANT1 First antenna ANT2 Second antenna

Claims

1. A hollow main body case; a first antenna unit provided inside the main body case, the first antenna unit including an antenna having a characteristic that the reception sensitivity is not reduced when the device is attached to the human body compared to when the device is not attached to the human body; a second antenna unit provided inside the main body case, the second antenna unit including an antenna having a characteristic that the reception sensitivity is lower when the device is attached to the human body than when the device is not attached to the human body; A sensor unit that detects whether the device is attached to a human body; A control unit that executes processing of a predetermined function of the device itself, The control unit executes the process of the predetermined function using the first antenna unit when the sensor unit detects that the device is attached to a human body, and executes the process of the predetermined function using the second antenna unit when the sensor unit does not detect that the device is attached to a human body. Wearable devices.

2. the predetermined function is a function of correcting time data used in the device itself; The wearable device according to claim 1 .

3. The sensor unit is capable of determining whether the device is located outdoors or indoors, The control unit is When the sensor unit detects that the device is attached to a human body and determines that the device is outdoors, the first antenna unit acquires the time data through radio wave reception from a positioning satellite; When the sensor unit does not detect that the device is worn on a human body, the second antenna unit acquires the time data from another communication terminal through wireless communication. The wearable device according to claim 2 .

4. When the sensor unit detects that the device is attached to a human body and determines that the device is indoors, a notification is issued to prompt the user to move the device away from the human body. The wearable device according to claim 3 .

5. The sensor unit is capable of determining whether the device is located outdoors or indoors, The control unit is When the sensor unit determines that the device is outdoors and detects that the device is worn on a human body, the first antenna unit acquires the time data through radio wave reception from a positioning satellite; When the sensor unit determines that the device is indoors and does not detect that the device is worn on a human body, the second antenna unit acquires the time data from another communication terminal through wireless communication. The wearable device according to claim 2 .

6. When the sensor unit determines that the device is outdoors and does not detect that the device is worn on a human body, the control unit acquires the time data from another communication terminal through wireless communication using the second antenna unit. The wearable device according to claim 5 .

7. The back cover of the main body case is at the same potential as ground. The wearable device according to claim 1 .

8. the first antenna unit and the second antenna unit receive a radio signal including time data and transfer the radio signal to the control unit; The wearable device according to claim 1 .

9. The first antenna unit includes a patch antenna. The wearable device according to claim 1 .

10. The second antenna unit includes a monopole antenna. The wearable device according to claim 1 .

11. Wearable devices, a first antenna unit including an antenna having a characteristic that the reception sensitivity is not reduced when the device is attached to the human body compared to when the device is not attached to the human body; a second antenna unit including an antenna having a characteristic that the reception sensitivity is lower when the device is attached to the human body than when the device is not attached to the human body; A sensor unit that detects whether the device is attached to a human body; A control unit for executing processing of a predetermined function of the device itself, The control unit executes the process of the predetermined function using the first antenna unit when the sensor unit detects that the device is attached to a human body, and executes the process of the predetermined function using the second antenna unit when the sensor unit does not detect that the device is attached to a human body. A method for controlling a wearable device.

12. Wearable devices, a first antenna unit including an antenna having a characteristic that the reception sensitivity is not reduced when the device is attached to the human body compared to when the device is not attached to the human body; a second antenna unit including an antenna having a characteristic that the reception sensitivity is lower when the device is attached to the human body than when the device is not attached to the human body; A sensor unit that detects whether the device is attached to a human body; A control unit that executes processing of a predetermined function of the device itself, causing the control unit to execute processing of the predetermined function using the first antenna unit when the sensor unit detects that the device is attached to a human body, and to execute processing of the predetermined function using the second antenna unit when the sensor unit does not detect that the device is attached to a human body. program.

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