JP7015897B2 - Portable electronic devices - Google Patents

Description

The present invention relates to a portable electronic device.

Conventionally, there is a measuring terminal that calculates the amount of activity. Patent Document 1 describes a body motion detection unit that detects a user's body movement, a communication unit that communicates with an external device, receives user's personal data, and transmits measured or calculated data, and a user. An activity measurement terminal including a storage unit that stores personal data, measured or calculated data, and a calculation unit that performs a predetermined calculation based on the detection result of the body movement detection unit and the data of the storage unit. It has been disclosed.

Japanese Patent No. 6049308

Here, it is desirable that the power consumption can be reduced in the portable electronic device that detects the amount of activity. For example, it is preferable that the power consumption of the sensor that detects the physical quantity related to the activity amount can be suppressed in the period from the shipment of the portable electronic device to the start of use of the portable electronic device by the user.

An object of the present invention is to provide a portable electronic device capable of suppressing power consumption of a sensor that detects a physical quantity related to an activity amount.

The portable electronic device of the present invention is the pairing information between the communication unit and the external device and the user's pairing information when the pairing between the communication unit and the communication unit and the external device used by the user is executed. A storage unit for storing profile information is provided, and when an operation of erasing the pairing information is performed by a user, the pairing information and the profile information are erased from the storage unit.

The portable electronic device according to the present invention has pairing information between the communication unit and the external device and user profile information when pairing between the communication unit and the communication unit and the external device used by the user is executed. When an operation of erasing the pairing information is performed by the user, the pairing information and the profile information are erased from the storage unit. According to the portable electronic device according to the present invention, there is an effect that the power consumption of the sensor can be suppressed.

FIG. 1 is a diagram showing a portable electronic device according to an embodiment. FIG. 2 is a block diagram of a portable electronic device according to an embodiment. FIG. 3 is a diagram showing a first example of a flow until power supply to the sensor is permitted in the embodiment. FIG. 4 is a diagram showing a second example of the flow until the power supply to the sensor is permitted in the embodiment. FIG. 5 is a diagram showing an acceleration sensor according to the first modification of the embodiment. FIG. 6 is a block diagram of a portable electronic device according to a second modification of the embodiment. FIG. 7 is a flowchart relating to the second modification of the embodiment.

Hereinafter, the portable electronic device according to the embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment. In addition, the components in the following embodiments include those that can be easily assumed by those skilled in the art or those that are substantially the same.

[Embodiment]
An embodiment will be described with reference to FIGS. 1 to 4. The present embodiment relates to a portable electronic device. FIG. 1 is a diagram showing a portable electronic device according to an embodiment, FIG. 2 is a block diagram of the portable electronic device according to the embodiment, and FIG. 3 is a flow until power supply to a sensor is permitted in the embodiment. FIG. 4 is a diagram showing a second example of the flow until power supply to the sensor is permitted in the embodiment.

The electronic clock 1 shown in FIG. 1 is an example of a portable electronic device according to an embodiment. The electronic clock 1 has a function of performing wireless communication with an external device 3 and a function of calculating the amount of activity of the user. As shown in FIG. 1, the electronic clock 1 has an analog display unit 26 and an outer case 29. The outer case 29 has a case body 29e and four cans 29a to 29d. The shape of the case body 29e is annular, for example, a cylindrical shape. Cans 29a to 29d project from the outer peripheral surface of the case body 29e.

The analog display unit 26 is housed in the internal space of the case body 29e. The analog display unit 26 has a dial 26a, a second hand 26b, a minute hand 26c, an hour hand 26d, and a day plate 26e. A crown 27 is arranged on the case body 29e. The end of the crown 27 projects from the side surface of the case body 29e.

As shown in FIG. 2, the electronic clock 1 further includes a communication unit 22, a control unit 23, a power supply unit 24, a drive mechanism 25, and a storage unit 28. The communication unit 22 includes an antenna 21, a communication module 22a, and a conversion unit 22b. The antenna 21 transmits and receives radio waves for short-range wireless communication. The antenna 21 is connected to the communication module 22a. The communication module 22a is a communication control module that performs short-range wireless communication with the external device 3. The communication module 22a communicates with the external device 3 by, for example, the protocol of Bluetooth (registered trademark). The conversion unit 22b converts the serial signal into a parallel signal, or converts the parallel signal into a serial signal.

The control unit 23 controls various circuits and mechanisms of the electronic clock 1. The control unit 23 includes a microcontroller 23a, a motor drive circuit 23b, a non-volatile memory 23c, and an RTC (Real Time Clock) 23d. The microcontroller 23a has a calculation unit 23e, a RAM (Random Access Memory) 23f, and a ROM (Read Only Memory) 23g.

The arithmetic unit 23e performs various information processing according to the program stored in the ROM 23g. The calculation unit 23e calculates the internal time of the electronic clock 1 based on, for example, the clock signal output from the RTC23d. Further, the calculation unit 23e of the present embodiment calculates the amount of activity of the user based on the detection result of the acceleration sensor 4, as will be described later. The RAM 23f functions as a work memory of the calculation unit 23e. Information to be processed by the calculation unit 23e is written in the RAM 23f.

The motor drive circuit 23b controls the drive mechanism 25 based on the time inside the clock. The non-volatile memory 23c is a memory that holds information when power is not supplied from the power supply unit 24 to the control unit 23 or when the electronic clock 1 is restarted. In the non-volatile memory 23c, for example, data of the amount of activity calculated by the calculation unit 23e is recorded.

The power supply unit 24 is a power source for the electronic clock 1. The power supply unit 24 supplies electric power to the communication unit 22, the control unit 23, the drive mechanism 25, and the like. The power supply unit 24 includes a power generation circuit 24a, a battery 24b, and a voltage detection circuit 24c. The power generation circuit 24a is a power generation mechanism such as a solar cell, and stores the generated power in the battery 24b. The battery 24b is a rechargeable secondary battery. The voltage detection circuit 24c is a circuit that detects the voltage of the battery 24b. The detection result of the voltage detection circuit 24c is output to the microcontroller 23a.

The drive mechanism 25 of the present embodiment has three step motors 25a, 25b, 25c. The step motor 25a is a motor that moves the second hand 26b. The step motor 25b is a motor that moves the minute hand 26c and the hour hand 26d. The step motor 25c is a motor that rotates the date plate 26e. The step motors 25a, 25b, 25c are driven by a drive signal output from the motor drive circuit 23b.

The storage unit 28 is a storage device that stores pairing information and user profile information. The pairing information is information regarding pairing between the communication unit 22 and the external device 3, and includes, for example, a passkey for pairing. The user's profile information includes, for example, the user's height and weight. The storage unit 28 is, for example, a non-volatile memory such as a flash memory or EEPROM.

The electronic clock 1 of the present embodiment has an acceleration sensor 4 and a tilt switch 5. The acceleration sensor 4 is a sensor that detects the acceleration of the electronic timepiece 1. The acceleration sensor 4 detects, for example, the three-dimensional acceleration of the electronic clock 1. The acceleration sensor 4 outputs a signal having an amplitude corresponding to the magnitude of the detected acceleration. For example, the amplitude of the signal output by the acceleration sensor 4 increases as the absolute value of the detected acceleration increases.

The tilt switch 5 is a sensor that detects a change in the posture of the electronic clock 1. The tilt switch 5 switches from an on state to an off state or from an off state to an on state according to a change in the tilt angle of the electronic clock 1. The detection results of the acceleration sensor 4 and the tilt switch 5 are output to the control unit 23. The acceleration sensor 4 and the tilt switch 5 are operated by the electric power supplied from the power supply unit 24.

The external device 3 shown in FIG. 1 is a device owned by the user of the electronic clock 1 and is used by the user. The external device 3 is typically a portable terminal device such as a smartphone. The external device 3 has a function of executing short-range wireless communication. Further, the external device 3 has a function of communicating with the external server 200 via the Internet network 100. The external device 3 has a housing 31 and a touch panel 32. The touch panel 32 is superimposed on the image display surface. The user can operate the external device 3 by the input operation to the touch panel 32.

When the user performs wireless communication between the electronic clock 1 and the external device 3 for the first time, the user pairs the electronic clock 1 with the external device 3. After the pairing is executed, the electronic clock 1 and the external device 3 can automatically start wireless communication. When pairing the electronic clock 1 with the external device 3, the user performs a pairing start operation with respect to the electronic clock 1. The pairing start operation is, for example, a predetermined operation for the crown 27. Further, the user performs a pairing start operation with respect to the external device 3. The pairing start operation for the external device 3 is performed, for example, via the touch panel 32.

The external device 3 of the embodiment can execute the activity amount management application. The activity amount management application is an application for storing and managing the user's activity amount calculated by the electronic clock 1. The external device 3 acquires the user's activity data from the electronic clock 1 by wireless communication. The pairing in the external device 3 may be performed by the activity management application.

When the pairing start operation is performed by the user, the control unit 23 of the electronic clock 1 causes the communication unit 22 to execute the pairing operation. The communication unit 22 performs pairing with the external device 3 according to a predetermined procedure. For example, the communication unit 22 performs a pairing authentication operation using an authentication code to establish a communication link with the external device 3. For example, the communication unit 22 forms a common code (for example, a link key) after pairing authentication to form a communication link. When the communication link with the external device 3 is formed, the communication unit 22 notifies the control unit 23 that the pairing is completed.

Upon receiving the notification of the completion of pairing, the control unit 23 acquires the pairing information between the communication unit 22 and the external device 3 from the communication unit 22. The pairing information includes, for example, the identification information of the external device 3 and the link key. The control unit 23 records the acquired pairing information in the storage unit 28. The formation of the communication link between the communication unit 22 and the external device 3 from the next time is performed based on the pairing information recorded in the storage unit 28. That is, if the pairing information is recorded in the storage unit 28, the communication unit 22 can form a communication link with the external device 3 and start communication. When the communication link between the communication unit 22 and the external device 3 is not formed, the control unit 23 provides the communication unit 22 with the communication link with the external device 3 based on the pairing information recorded in the storage unit 28. To form. If the formation of the communication link is not successful, the control unit 23 periodically tries to form the communication link until the formation of the communication link is successful.

The power supply from the battery 24b to the acceleration sensor 4 is controlled by the control unit 23. The control unit 23 can further control the power supply from the battery 24b to the tilt switch 5.

The control unit 23 of the present embodiment calculates the amount of activity of the user based on the detection result of the acceleration sensor 4. The amount of activity of the user includes, for example, the number of walking steps of the user and the calorie consumption of the user. Of the amount of activity, the calorie consumption is calculated based on the user's profile information in addition to the detection result of the acceleration sensor 4. The user's profile information includes the user's height and weight. On the other hand, the number of walking steps of the user can be calculated without referring to the profile information. The electronic clock 1 of the present embodiment is configured to acquire user profile information from an external device 3 by wireless communication. The electronic clock 1 records the acquired profile information in the storage unit 28, and calculates the amount of user activity based on the acquired profile information. Therefore, the electronic clock 1 cannot calculate the amount of activity required for the profile information until the profile information is acquired from the external device 3.

As described below, the electronic clock 1 of the present embodiment permits power supply to the acceleration sensor 4 when a predetermined permission condition is satisfied. As a result, the electronic clock 1 of the present embodiment can suppress unnecessary power supply to the acceleration sensor 4 and reduce power consumption by the acceleration sensor 4.

The permission condition of the present embodiment includes the condition that the pairing information with the external device 3 is recorded in the storage unit 28. In other words, the control unit 23 permits the power supply to the acceleration sensor 4 on the condition that the electronic clock 1 and the external device 3 have already been paired as one of the permission conditions. As a result, for example, the power consumption of the acceleration sensor 4 from the time when the electronic clock 1 is shipped until the user starts using the electronic clock 1 is suppressed.

Further, the permission condition of the present embodiment includes that the profile information of the user is recorded in the storage unit 28. That is, the control unit 23 permits the power supply to the acceleration sensor 4 on the condition that the user's profile information has already been acquired as one of the permission conditions. As a result, for example, the power consumption of the acceleration sensor 4 until the electronic clock 1 can appropriately calculate the amount of activity is suppressed.

With reference to FIG. 3, an example of the flow until the power supply to the acceleration sensor 4 is permitted will be described.
(1) The electronic clock 1 in the factory-shipped state does not have pairing information and profile information. That is, at the time of shipment from the factory, the pairing information and the user profile information are not recorded in the storage unit 28.
(2) The user inputs the user's profile information in the application of the external device 3. In the example of FIG. 3, the profile information is input before the pairing is executed.
(3) The application of the external device 3 transmits the profile information to the external server 200. The external server 200 stores the received profile information in a storage device or the like.

(4) When the electronic clock 1 communicates with the external device 3 for the first time, the user performs a pairing start operation for each of the electronic clock 1 and the external device 3 to execute pairing.
(5) The control unit 23 records the pairing information in the storage unit 28.
(6) When the pairing information is recorded in the storage unit 28, the control unit 23 permits the power supply to the acceleration sensor 4. By supplying electric power to the accelerometer 4, it becomes possible to calculate the amount of activity that does not require a user profile.
(7) When the electronic clock 1 forms a communication link with the external device 3 based on the pairing information, the electronic watch 1 requests the profile information from the external device 3.
(8) The external device 3 transmits profile information to the electronic clock 1.
(9) The electronic clock 1 records the received profile information in the storage unit 28. By acquiring the profile information, the user profile can calculate the required activity amount.

The electronic clock 1 of the present embodiment can suppress unnecessary power consumption in the electronic clock 1 by performing the power supply control as described above. For example, in the factory-shipped electronic clock 1, neither the pairing information nor the profile information is recorded in the storage unit 28. Therefore, the control unit 23 does not allow the power supply to the acceleration sensor 4. As a result, the power consumption of the acceleration sensor 4 is suppressed, and the power consumption of the electronic timepiece 1 is reduced.

Further, since the acceleration sensor 4 does not operate in the factory-shipped state, unnecessary activity data cannot be calculated. For example, if the accelerometer 4 operates between the time the electronic clock 1 is shipped and the time it is handed over to the user, activity data unrelated to the user is generated and accumulated in the electronic clock 1. .. Further, when the electronic clock 1 and the external device 3 are paired, the accumulated useless activity data is transmitted to the external device 3. On the other hand, in the electronic clock 1 of the present embodiment, unnecessary activity amount data is not generated.

Before the electronic clock 1 is shipped, the acceleration sensor 4 is inspected at the factory. In the factory inspection, power supply to the accelerometer 4 is temporarily permitted as described below. When the factory inspection is performed, the mode of the electronic clock 1 is set as the test mode. In the test mode, power supply to the accelerometer 4 is permitted even if the pairing information and the profile information are not recorded in the storage unit 28. When the electronic clock 1 is equipped with a sensor other than the accelerometer 4 that detects a physical quantity related to the amount of activity of the user, power supply is similarly permitted to those sensors and inspection is possible.

When a factory inspection is performed, pairing information and profile information for inspection may be recorded in the storage unit 28. By recording the pairing information and profile information for inspection, the power supply to the acceleration sensor 4 is permitted. When the electronic clock 1 is equipped with a sensor other than the accelerometer 4 that detects a physical quantity related to the amount of activity of the user, power supply is similarly permitted to those sensors and inspection is possible. When the factory inspection is completed, the pairing information and profile information for inspection are deleted from the storage unit 28.

In the example of FIG. 3, the user profile is input before the pairing is executed, but the profile information does not necessarily have to be input before the pairing is executed. When it becomes necessary for the user profile to calculate the required activity amount, the user may perform a process of registering the user profile and storing it in the electronic clock 1.

With reference to FIG. 4, a second example of the flow until the power supply to the acceleration sensor 4 is permitted will be described. In the second example shown in FIG. 4, the difference from the first example shown in FIG. 3 is that, for example, power supply to the acceleration sensor 4 is permitted after both pairing and profile information are recorded.

(11) In the factory default state, neither pairing information nor profile information is recorded.
(12) The user inputs the user's profile information in the application of the external device 3. Also in the example of FIG. 4, the profile information is input before the pairing is executed.
(13) The external device 3 transmits the profile information to the external server 200.
(14) Pairing is performed by the user.
(15) The control unit 23 records the pairing information in the storage unit 28.
(16) Although pairing information is recorded in the storage unit 28, profile information is not recorded. Therefore, the control unit 23 does not allow the power supply to the acceleration sensor 4.
(17) The electronic clock 1 requests profile information from the external device 3.
(18) The external device 3 transmits profile information to the electronic clock 1.
(19) The electronic clock 1 records the received profile information in the storage unit 28.
(20) When the profile information is recorded in the storage unit 28, the electronic clock 1 permits power supply to the acceleration sensor 4.

As described above, the power supply to the acceleration sensor 4 is not permitted until the user's profile information is acquired, so that the power consumption in the electronic clock 1 is reduced. In other words, the electronic clock 1 of the present embodiment reduces the power consumption by permitting the power supply to the acceleration sensor 4 after the activity amount data using the profile information can be calculated. For example, when trying to calculate the calorie consumption of a user as activity amount data, profile information such as height and weight is required. According to the present embodiment, it is possible to prevent the accelerometer 4 from being operated without the information necessary for calculating the activity amount data being insufficient.

In the electronic clock 1 of the present embodiment, the pairing information with the external device 3 can be erased. The pairing information is erased by the user's operation. The operation for erasing the pairing information is, for example, a predetermined operation for the crown 27. When the user performs an operation to erase the pairing information, the control unit 23 of the present embodiment erases the profile information from the storage unit 28 together with the pairing information. As a result, the storage unit 28 is in a state in which neither pairing information nor profile information is recorded. When the pairing information and the profile information are erased in the storage unit 28, the control unit 23 prohibits the power supply to the acceleration sensor 4 until at least the pairing information is recorded in the storage unit 28 next time. The control unit 23 may prohibit the power supply to the accelerometer 4 until both the pairing information and the profile information are recorded.

Further, the control unit 23 of the present embodiment stops the power supply to the acceleration sensor 4 when the state in which the amplitude of the signal output from the acceleration sensor 4 is below the predetermined value continues for a predetermined period. The above predetermined value is determined, for example, based on the upper limit of the amplitude of the signal output by the acceleration sensor 4 when the electronic clock 1 is not used. Alternatively, the above predetermined value is determined based on the upper limit value of the amplitude of the signal output by the acceleration sensor 4 when the user wearing the electronic watch 1 is stationary. That is, the control unit 23 stops the power supply to the acceleration sensor 4 when the electronic clock 1 is not used for a predetermined period of time or when the user is substantially stationary for a predetermined period of time. .. As a result, the control unit 23 can reduce the power consumption of the electronic clock 1.

The control unit 23 of the embodiment operates the tilt switch 5 when the power supply to the acceleration sensor 4 is stopped. When the control unit 23 determines that the posture of the electronic clock 1 has changed based on the detection result of the tilt switch 5, the control unit 23 restarts the power supply to the acceleration sensor 4. The accelerometer 4 consumes more power than the tilt switch 5. Therefore, the electronic clock 1 of the present embodiment can reduce the power consumption of the electronic clock 1 by minimizing the power supply to the acceleration sensor 4.

As described above, the electronic clock 1 according to the embodiment includes an acceleration sensor 4, a communication unit 22, a control unit 23, a storage unit 28, and a calculation unit 23e. The electronic clock 1 is an example of a portable electronic device. The acceleration sensor 4 is an example of a sensor that detects a physical quantity related to a user's activity amount. The communication unit 22 is a circuit that performs wireless communication. The control unit 23 is a control circuit that controls the power supply to the acceleration sensor 4. The storage unit 28 records pairing information between the communication unit 22 and the external device 3 when the pairing between the communication unit 22 and the external device 3 is executed. The calculation unit 23e is an example of a calculation unit that calculates the amount of activity of the user based on the detection result of the acceleration sensor 4.

The permission condition for permitting the power supply to the acceleration sensor 4 by the control unit 23 of the present embodiment includes that the pairing information is recorded in the storage unit 28. According to the electronic clock 1 of the present embodiment, the power consumption of the acceleration sensor 4 is suppressed because the power supply to the acceleration sensor 4 is not permitted when the pairing information is not recorded in the storage unit 28.

In the electronic clock 1 of the present embodiment, when the user's profile information is acquired by wireless communication between the communication unit 22 and the external device 3, the profile information is recorded in the storage unit 28. The permission condition for permitting power supply to the accelerometer 4 may include that profile information is recorded in the storage unit 28. In that case, the power consumption of the accelerometer 4 is further suppressed because the power supply to the accelerometer 4 is not permitted when the profile information is not recorded.

[First modification of the embodiment]
A first modification of the embodiment will be described. FIG. 5 is a diagram showing an acceleration sensor according to the first modification of the embodiment. In the first modification of the embodiment, the difference from the above embodiment is that, for example, the acceleration sensor 4 includes the temperature detection unit 41. As shown in FIG. 5, the acceleration sensor 4 according to the first modification of the embodiment has a temperature detection unit 41 and an acceleration detection unit 42. The temperature detection unit 41 is a circuit that detects the temperature. The acceleration detection unit 42 is a circuit that detects acceleration, and for example, detects acceleration in orthogonal triaxial directions. The detection results of the temperature detection unit 41 and the acceleration detection unit 42 are output to, for example, the control unit 23.

In the acceleration sensor 4, the power supply line for the temperature detection unit 41 and the power supply line for the acceleration sensor 4 are common. That is, the acceleration sensor 4 is configured so that when power is supplied to the temperature detection unit 41, power is also supplied to the acceleration detection unit 42. The power supply to the acceleration sensor 4 is controlled by the control IC 43. The control IC 43 operates in response to a command from the control unit 23.

The control unit 23 according to the first modification of the embodiment supplies electric power to the acceleration sensor 4 based on the sampling interval by the temperature detection unit 41. The sampling interval by the temperature detection unit 41 is, for example, a 5-minute interval. In this case, the control unit 23 supplies electric power to the acceleration sensor 4 every 5 minutes, and the temperature detection unit 41 detects the temperature. The control unit 23 may prevent the acceleration detection unit 42 from detecting the acceleration when the acceleration sensor 4 is supplied with electric power. When the detection result is output from the temperature detection unit 41, the control unit 23 stops the power supply to the acceleration sensor 4. That is, the control unit 23 prohibits the power supply to the acceleration sensor 4 during the period excluding the period in which the temperature is detected by the temperature detection unit 41.

According to the first modification, power supply to the accelerometer 4 is permitted only for a period required for temperature detection. Therefore, the power consumption of the electronic clock 1 can be reduced by minimizing the period for supplying power to the acceleration sensor 4.

[Second variant of the embodiment]
A second modification of the embodiment will be described. FIG. 6 is a block diagram of a portable electronic device according to a second modification of the embodiment, and FIG. 7 is a flowchart according to the second modification of the embodiment. The second modification of the embodiment differs from the above embodiment in that, for example, it is determined whether or not to return from the power saving mode depending on the presence or absence of pairing information and the presence or absence of profile information.

As shown in FIG. 6, the electronic clock 1 according to the second modification has a push button 30 and an optical sensor 6. The push button 30 is arranged adjacent to the crown 27, for example. The electronic clock 1 is configured to perform various processes and settings according to the operation of the push button 30. The signal indicating the operation for the push button 30 is output to the control unit 23. The optical sensor 6 is arranged, for example, on the back side with respect to the dial 26a. The optical sensor 6 is, for example, a light receiving element that outputs a signal according to the amount of received light. The signal indicating the detection result of the optical sensor 6 is output to the control unit 23.

The electronic clock 1 has a power saving mode (PS state). The power saving mode is a mode for suppressing power consumption in the electronic timepiece 1. In the power saving mode, the hand movement of at least one of the second hand 26b, the minute hand 26c, and the hour hand 26d is stopped. In the power saving mode, for example, the hand movement of the second hand 26b is stopped, and the movement of the minute hand 26c and the hour hand 26d is executed. The control unit 23 is configured to execute a determination of transition to the power saving mode and a determination of return from the power saving mode.

The control unit 23 shifts the electronic clock 1 to the power saving mode, for example, when a predetermined transition condition is satisfied. The transition condition is, for example, that the light receiving amount of the optical sensor 6 is not more than the lower limit value.

The transition to the power saving mode and the return from the power saving mode will be described with reference to FIG. 7. When the transition condition is satisfied, the control unit 23 executes control based on the flowchart shown in FIG. 7. In step S10, the control unit 23 commands the motor drive circuit 23b to shift to the power saving mode. The motor drive circuit 23b executes the hand movement control of the power saving mode in response to the transition command to the power saving mode. In the hand movement control in the power saving mode, for example, the hand movement of the second hand 26b is stopped. The motor drive circuit 23b, for example, stops the second hand 26b at the hour position. The motor drive circuit 23b may move the minute hand 26c and the hour hand 26d according to the internal time, or may stop the minute hand 26c and the hour hand 26d in the hand movement control in the power saving mode. When step S10 is executed, the process proceeds to step S20.

In step S20, the control unit 23 determines whether or not there is a user operation. The control unit 23 determines, for example, whether or not an operation on the crown 27 or the push button 30 has been detected. If it is determined affirmatively that the user has operated in step S20, the process proceeds to step S70, and if a negative determination is made, the process proceeds to step S30.

The control unit 23 determines in step S30 whether or not light is detected. The control unit 23 makes a determination in step S30 based on the detection result of the optical sensor 6. For example, when the light receiving amount of the optical sensor 6 is equal to or greater than the threshold value, the control unit 23 makes an affirmative determination in step S30. The threshold value is set so that, for example, the amount of power generated by the power generation circuit 24a exceeds a predetermined lower limit value. As a result of the determination in step S30, if it is determined affirmatively that light is detected, the process proceeds to step S70, and if it is determined negatively, the process proceeds to step S40.

In step S40, the control unit 23 determines whether or not there is pairing information. When the pairing information is recorded in the storage unit 28, the control unit 23 makes an affirmative determination in step S40. As a result of the determination in step S40, if it is determined affirmatively that there is pairing information, the process proceeds to step S50, and if it is determined negatively, the process proceeds to step S20.

In step S50, the control unit 23 determines whether or not there is profile information. When the profile information is recorded in the storage unit 28, the control unit 23 makes an affirmative determination in step S50. As a result of the determination in step S50, if an affirmative determination is made that the profile information is present, the process proceeds to step S60, and if a negative determination is made, the process proceeds to step S20.

The control unit 23 determines in step S60 whether or not the tilt switch 5 has detected movement. The control unit 23 determines affirmatively in step S60, for example, when the state of the tilt switch 5 is switched from the on state to the off state or when the state is switched from the off state to the on state. As a result of the determination in step S60, if it is determined affirmatively that the tilt switch 5 has detected the movement, the process proceeds to step S70, and if it is determined negatively, the process proceeds to step S20.

The control unit 23 releases the PS state of the electronic clock 1 in step S70. The control unit 23 commands the motor drive circuit 23b to return from the power saving mode to the normal hand movement mode. The motor drive circuit 23b executes the hand movement control in the normal hand movement mode in response to the return command. In the hand movement control in the normal hand movement mode, the motor drive circuit 23b causes all of the second hand 26b, the minute hand 26c, and the hour hand 26d to move according to the internal time. When step S70 is executed, this control flow ends.

As described above, the control unit 23 according to the second modification of the embodiment permits the return from the power saving mode when the recovery condition is satisfied during the execution of the power saving mode. The return conditions include that the pairing information is recorded in the storage unit 28 (S40-Y) and that the tilt switch 5 detects a change in the tilt angle (S60-Y). When the pairing information is not recorded in the storage unit 28, the return from the power saving mode is not permitted, so that the power consumption in the electronic clock 1 is suppressed. For example, from the time when the electronic clock 1 is shipped until the user performs pairing with the electronic clock 1, even if the tilt switch 5 detects the movement of the electronic clock 1, the return from the power saving mode is not permitted. That is, even if the state of the tilt switch 5 is switched during transportation, the power saving mode is maintained and power consumption is suppressed.

Further, the return condition includes that the profile information is recorded in the storage unit 28. When the pairing information is not recorded in the storage unit 28, the return from the power saving mode is not permitted, so that the power consumption of the electronic clock 1 is suppressed.

In the flowchart of FIG. 7, step S40 or step S50 may be omitted. For example, when step S40 is omitted, if there is profile information regardless of the presence or absence of pairing information and the tilt switch 5 detects the movement of the electronic clock 1, the return from the power saving mode is permitted. For example, when step S50 is omitted, if there is pairing information regardless of the presence or absence of profile information and the tilt switch 5 detects the movement of the electronic clock 1, the return from the power saving mode is permitted.

[Third variant of the embodiment]
The means by which the electronic clock 1 acquires the user's profile is not limited to communication with the external device 3. For example, profile information may be directly input to the electronic clock 1 by operating the operating member of the electronic clock 1. The operating member for inputting the profile information may be, for example, a push button. When the profile information is input by the operation of the operation member, the electronic clock 1 records the profile information in the storage unit 28. In this case, the electronic clock 1 can allow power supply to the acceleration sensor 4 when the necessary profile information is recorded in the storage unit 28.

When the user performs an operation to delete the pairing information, the control unit 23 may delete the pairing information and leave the profile information without deleting it. By doing so, when the user changes the model of the external device 3, it is possible to change the pairing information while leaving the profile information in the storage unit 28.

The permission condition does not have to include that the profile information is recorded in the storage unit 28. That is, the control unit 23 may allow power supply to the acceleration sensor 4 as long as the pairing information is recorded in the storage unit 28, regardless of whether the profile information is recorded in the storage unit 28.

The electronic clock 1 may be configured so that the user can prohibit the power supply to the acceleration sensor 4. In this case, for example, the power supply to the acceleration sensor 4 may be stopped by the user's operation on the crown 27 or the push button. Alternatively, a command to stop the power supply to the acceleration sensor 4 may be sent by wireless communication between the external device 3 and the electronic clock 1. In this case, the user, for example, stops the power supply to the acceleration sensor 4 by operating the application in the external device 3. This makes it possible to reduce unnecessary power consumption in the electronic clock 1 when the user does not need the information from the acceleration sensor 4.

The portable electronic device of the above embodiment and the modification is not limited to the illustrated electronic clock 1. For example, the portable electronic device is not limited to an analog electronic clock that displays the time by a pointer, and may be an electronic clock that displays the time by a digital display. The portable electronic device may be a so-called smart watch. The portable electronic device is preferably a wristwatch-type device, but may be a device other than the wristwatch-type device.

The sensor that detects the amount of activity of the user is not limited to the acceleration sensor 4, and may be, for example, a sensor that detects human body information such as a heartbeat sensor. The electronic clock 1 may have a sensor for detecting the ambient environment such as a position detection sensor such as GPS and an ambient environment temperature sensor. The control unit 23 may calculate the amount of activity of the user by using the detection result of the position detection sensor or the sensor that detects the surrounding environment. The amount of activity of the user may be calculated by the external device 3 or may be calculated by the external server 200.

The contents disclosed in the above-described embodiments and modifications can be combined and executed as appropriate.

1 Electronic clock 3 External device 4 Accelerometer 5 Tilt switch 6 Optical sensor 21 Antenna 22 Communication unit 22a: Communication module, 22b: Conversion unit 23 Control unit 23a: Microcontroller, 23b: Motor drive circuit, 23c: Non-volatile memory, 23d : RTC, 23e: Arithmetic unit, 23f: RAM, 23g: ROM
24 Power supply unit 24a: Power generation circuit, 24b: Battery, 24c: Voltage detection circuit 25 Drive mechanism 25a to 25c Step motor 26 Analog display unit 26a: Dial, 26b: Second hand, 26c: Minute hand, 26d: Hour hand, 26e: Day plate 27 Crown 28 Storage unit 29 Exterior case 29a-29d: Can, 29e: Case body 30 Push button 31 Housing 32 Touch panel 41 Temperature detection unit 42 Acceleration detection unit

Claims (3)

Communication department and
A storage unit that stores pairing information between the communication unit and the external device and user profile information when pairing between the communication unit and the external device used by the user is executed.
Sensors that detect physical quantities and
A control unit that controls the power supply to the sensor,
Equipped with
The profile information is the physical information of the user for calculating the amount of activity of the user.
When the user performs an operation to erase the pairing information, the pairing information and the profile information are erased from the storage unit , and then at least until the pairing information is stored in the storage unit. Prohibit power supply to the sensor
A portable electronic device characterized by that. The portable electronic device according to claim 1, wherein the profile information is acquired by wireless communication between the communication unit and the external device. The sensor is an acceleration sensor that outputs a signal having an amplitude corresponding to the magnitude of acceleration.
The portable electronic device according to claim 1 or 2 , wherein the control unit stops power supply to the sensor when the state in which the amplitude of the signal output from the sensor is below a predetermined value continues for a predetermined period.

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