Electronic instrument, electronic watch, reset control circuit, and reset method

Abstract

To provide an electronic instrument, electronic watch, reset control circuit, and reset method that enable a proper rest while preventing consumption of battery power.SOLUTION: A secondary battery 31 is configured to supply power with the secondary battery connected to a microcomputer 11. A reset timer IC 121 is configured to enable generation of a signal resetting the microcomputer 11. A solar panel 32 is configured to supply the power with the solar panel connected to at least the reset timer IC 121. A PMOS transistor TR 01 is arranged between the solar panel 32 and the reset timer IC 121, and is configured to, in response to a predetermined set input operation such as a depressing operation using a specific operation button, enable switching of whether or not to supply the power to the reset timer IC 121 from the solar panel 32.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to an electronic device, an electronic timepiece, a reset control circuit, and a reset method. [Background technology]

[0002] There is a known technology for resetting information by user operation (for example, Patent Document 1). In particular, when realizing low power consumption using a small capacity battery such as a watch, the unnecessary standby current for the reset function affects the remaining battery capacity and lifespan. For this reason, there are also products that do not have a function for resetting information. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-110514 Summary of the Invention [Problem to be solved by the invention]

[0004] As electronic devices become more complex, bugs may occur on very rare occasions. In such cases, if there is no function to reset the system, recovery may be impossible or difficult.

[0005] The present invention has been made in view of the above circumstances, and has as its object to provide an electronic device, an electronic timepiece, a reset control circuit, and a reset method that are capable of appropriately resetting while preventing battery consumption. [Means for solving the problem]

[0006] In order to achieve the above object, an electronic device according to the present invention comprises: A processing section; A reset unit capable of generating a signal to reset a process by the processing unit; A first power supply unit including a battery and connected to the processing unit to supply power; The reset unit includes a second power supply unit that is connected to at least the reset unit to supply power thereto and is different from the first power supply unit. Effect of the Invention

[0007] According to the present invention, it is possible to prevent battery consumption and perform appropriate resetting. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram illustrating an example of the configuration of an electronic device. [Diagram 2] FIG. 1A is an external view showing an electronic timepiece whose main shape is circular, and FIG. 1B is an external view showing an electronic timepiece whose main shape is rectangular with rounded corners. [Diagram 3] 13A shows an example of a connection configuration without a load switch, and FIG. 13B shows an example of a connection configuration with a load switch, when a solar panel serves as a second power supply section. [Figure 4] FIG. 1A shows an example of a connection configuration in which an external power source connected by wire via an external power source terminal serves as the second power supply unit, and FIG. 1B shows an example of a connection configuration in which an external power source capable of supplying power via a wireless signal using a wireless power receiving unit serves as the second power supply unit. [Diagram 5] FIG. 13 is a diagram illustrating another example of a connection configuration including a load switch. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals.

[0010] The electronic device 100 according to the embodiment of the present invention may be, for example, a smart watch, a digital audio player, smart glasses, or any other wearable or portable device, and may be, in particular, an information processing device that requires a reduction in power consumption, such as a device equipped with a relatively small capacity battery, such as a wearable terminal that can be worn on a user's body. FIG. 1 shows an example of the configuration of the electronic device 100. The electronic device 100 shown in FIG. 1 includes a microcomputer 11, a reset (initialization) signal generating unit 12, and a power supplying unit 13. The electronic device 100 also includes a communication unit 21, a GPS (Global Positioning System) signal acquiring unit 22, a storage unit 23, a display unit 24, a notification unit 25, a sensor unit 26, and an input unit 27. The electronic device 100 is not limited to having all of these configurations, and may include some configurations necessary to solve the problems of the present invention. Alternatively, in addition to these configurations, the electronic device 100 may include other configurations that realize the functions of the electronic device 100.

[0011] The microcomputer 11 can be configured using a processing unit that executes various processes including processes related to the operation control of the electronic device 100. For example, the microcomputer 11 may be a CPU (Central Processing Unit), an MPU (Micro Processing Unit), a DSP (Digital Signal Processor), other general-purpose processors, an integrated circuit for a specific application called an ASIC (Application Specific Integrated Circuit), a programmable logic device including an FPGA (Field Programmable Gate Array), other semiconductor integrated circuits that are large-scale integrated circuits called LSIs (Large Scale Integration), one selected from these and implemented as a single chip, or one implemented by combining any of these. The microcomputer 11 may be configured to include a processor, an internal memory, an input / output interface, etc.

[0012] As an example, the processor of the microcomputer 11 can execute processes for realizing various functions in the electronic device 100 by reading a program stored in advance from the built-in memory or the external memory included in the storage unit 23. At this time, the processor of the microcomputer 11 may be capable of sequentially executing a fixed data read operation for reading fixed data from the built-in memory or the non-volatile memory of the storage unit 23, a variable data write operation for writing various variable data into the built-in memory or the volatile memory of the storage unit 23 and temporarily storing it, a variable data read operation for reading various variable data temporarily stored in the built-in memory or the volatile memory of the storage unit 23, a signal input operation for accepting input of various signals from outside the microcomputer 11 via an input / output interface, and a signal output operation for outputting various signals to outside the microcomputer 11 via an input / output interface, or may be capable of simultaneously executing all or some of these operations.

[0013] The processes that the processor of the microcomputer 11 can execute may be information processing, data processing, signal processing, other processes for controlling the overall operation of the electronic device 100, or processes corresponding to any computer program including all or part of these. The microcomputer 11 may be capable of clocking the current date and time, including the current time, using a real time clock (RTC) or the like as a hardware clock circuit provided as an internal circuit or a peripheral circuit, or using software such as a clock program executed by the processor. As a result, the electronic device 100 may have a function as a clock device capable of clocking the current time. When the electronic device 100 has a function as a clock device, the clocking contents of the current time may be displayed digitally or analogically by the display unit 24, or may be displayed analogically by a mechanical configuration using hands.

[0014] The microcomputer 11 may be equipped with a single processor or may be equipped with multiple processors. When equipped with multiple processors, the microcomputer 11 may include a first processor that controls the overall operation of the electronic device 100 and a second processor that consumes less power than the first processor. The microcomputer 11 is an example of a processing unit that can execute various processes. Also, when the microcomputer 11 is equipped with multiple processors, the first processor is an example of a first processing unit, and the second processor that consumes less power is an example of a second processing unit.

[0015] The reset signal generating unit 12 can be configured using a reset timer IC (Integrated Circuit) capable of generating a reset signal as a signal for resetting the processing by the microcomputer 11. The reset timer IC starts updating the count value by the built-in counter in response to, for example, a change in the voltage level at the input terminal for counting operation from a high level to a low level when the power supply voltage is being supplied. This count value may be updated to count up or down periodically during a period in which the voltage level at the input terminal is at a low level. After that, when the period in which the voltage level is at a low level continues and the count value reaches a specific value preset as a reset determination value, a reset signal may be output as a signal for resetting the processing by the microcomputer 11 by, for example, changing the voltage level at the output terminal for the reset signal from a high level to a low level. For example, the reset signal generating unit 12 may be capable of generating a reset signal in response to an action that is a preset input operation, such as a user of the electronic device 100 pressing and holding a specific operation button included in the input unit 27. The reset signal generating unit 12 only needs to be capable of generating a reset signal when the duration of an input operation, such as a long press operation for 10 seconds or more, is equal to or longer than a predetermined time. In this manner, the reset signal generating unit 12 is an example of a reset unit capable of generating a signal that resets the processing by the microcomputer 11.

[0016] Power supply unit 13 can be configured using a power supply unit capable of generating a power supply voltage for each component of electronic device 100 to operate and function and supplying power. Power supply unit 13 includes a secondary battery 31. Power supply unit 13 may be configured to include a solar panel 32, an external power supply terminal 33, and a wireless power receiving unit 34, all or part of which.

[0017] The secondary battery 31 may be, for example, a lithium ion battery or any other battery that can be recharged and reused. In the electronic device 100, the secondary battery 31 may be fixed and cannot or is difficult to remove, or the user of the electronic device 100 may be able to easily remove the secondary battery 31. The secondary battery 31 is connected to each part of the electronic device 100, including the microcomputer 11, by internal wiring of the electronic device 100, for example, and supplies power to operate each part. In this way, the secondary battery 31 is an example of a first power supply unit that is connected to the microcomputer 11 and supplies power.

[0018] The solar panel 32 can be configured using a plurality of solar cells that serve as a light receiving unit capable of receiving light and generating electricity. The power generated in the solar panel 32 is stored in the secondary battery 31. The solar panel 32 may be configured to be capable of supplying the power generated in the solar panel 32 to the microcomputer 11, the reset signal generating unit 12, and other components of the electronic device 100. Alternatively, the solar panel 32 may be configured to be capable of supplying power to the secondary battery 31 and the reset signal generating unit 12, but not to supply power to other components of the electronic device 100 including the microcomputer 11. In this way, the solar panel 32 is included in an example of a second power supply unit that is connected to at least the reset signal generating unit 12 and supplies power.

[0019] The external power supply terminal 33 is configured using a cable connection terminal having a shape and performance of a predetermined standard, such as a USB (Universal Serial Bus) connector or an AC (Alternating Current) adapter socket. The external power supply terminal 33 may be configured to be able to take in power transmitted from an external power supply, such as a commercial power supply, connected by a cable, into the electronic device 100. Power transmitted from the external power supply via the external power supply terminal 33 connected by a cable is stored in the secondary battery 31. In addition, the power transmitted from the external power supply via the external power supply terminal 33 may be configured to be able to be supplied to the microcomputer 11, the reset signal generating unit 12, and other components of the electronic device 100. Alternatively, the external power supply terminal 33 may be configured to be able to supply power to the secondary battery 31 and the reset signal generating unit 12, but not to supply power to other components of the electronic device 100, including the microcomputer 11. The external power supply terminal 33 capable of supplying power from a wired external power supply is included in an example of a second power supply unit that is connected to at least the reset signal generating unit 12 and supplies power.

[0020] The wireless power receiving unit 34 is configured using a secondary coil, a rectifier bridge, a charging circuit, and the like that can receive power from an external wireless power supply device by electromagnetic induction and supply power to the secondary battery 31. The wireless power supply method may be an electromagnetic induction method, a magnetic field resonance method, or any other method that allows the wireless power receiving unit 34 to take in power transmitted from an external power source to the electronic device 100. In this way, the wireless power receiving unit 34 may be configured to take in power transmitted from an external power source such as a commercial power source by a wireless signal to the electronic device 100. The power transmitted from the external power source by the wireless power receiving unit 34 by a wireless signal is stored in the secondary battery 31. The power transmitted from the external power source by the wireless power receiving unit 34 may be configured to be supplied to the microcomputer 11, the reset signal generating unit 12, and other parts of the electronic device 100. Alternatively, the wireless power receiving unit 34 may be configured to be capable of supplying power to the secondary battery 31 and the reset signal generating unit 12, but not to supply power to other components in the electronic device 100, including the microcomputer 11. The wireless power receiving unit 34, which is capable of receiving and supplying power from an external power source via a wireless signal, is included in an example of a second power supply unit that is connected to at least the reset signal generating unit 12 and supplies power.

[0021] The communication unit 21 can be configured using a communication IC capable of transmitting and receiving radio frequency signals. The communication unit 21 may be configured to include an antenna, an amplifier circuit, a tuner, a CODEC (Coder and Decoder), and the like. For example, the communication unit 21 may be capable of communicating with any device or system capable of wireless communication, such as a wireless LAN (Local Area Network), a short-range wireless communication device, a mobile communication network, or other wireless communication, via an electric communication network or transmission medium, and may be capable of transmitting and receiving wireless signals according to a predetermined communication protocol. Note that the communication unit 21 is not limited to wireless communication, and may be configured to be capable of communicating with any device or system capable of wired communication.

[0022] The GPS signal acquisition unit 22 receives GPS signals, which are radio waves emitted from GPS satellites, and enables generation of location information indicating the current location of the electronic device 100. The location information may be information indicating the current planar location by latitude and longitude, or information indicating the current spatial location by altitude in addition to latitude and longitude. The GPS signal acquisition unit 22 may be capable of receiving radio waves corresponding to a single GPS technology, or may be capable of receiving radio waves corresponding to multiple GNSS (Global Navigation Satellite System) technologies.

[0023] The storage unit 23 can be configured using a storage unit capable of recording and reproducing by a change in a physical quantity corresponding to a program, information, data, signal, or all or a part of these. For example, the storage unit 23 may be capable of storing a program for controlling the operation of the electronic device 100, various information acquired by the electronic device 100, character data and image data to be displayed on the display unit 24, and the like. The storage unit 23 may be configured to include all or a part of a ROM (Read Only Memory), a flash memory, or any other semiconductor memory serving as a nonvolatile memory, or a semiconductor memory serving as a volatile memory such as a RAM (Random Access Memory). The storage unit 23 may include a storage device capable of recording and reproducing information electrically, magnetically, optically, or at least any one of these.

[0024] The display unit 24 can be configured using an LCD (Liquid Crystal Display) or an organic EL (Electro Luminescence) display, which is a liquid crystal display capable of displaying and outputting various information based on the control of the microcomputer 11. In this case, the display unit 24 only needs to be capable of displaying color images. The display unit 24 may also include a liquid crystal display device called PNLC (Polymer Network Liquid Crystal), which is a polymer network type liquid crystal, or PDLC (Polymer Dispersed Liquid Crystal), which is a polymer dispersed type liquid crystal. In this case, the display unit 24 only needs to be capable of displaying monochrome images.

[0025] The notification unit 25 can be configured using a notification device that provides various notifications to the user of the electronic device 100 by stimulating the senses. For example, the notification unit 25 may include a vibrator that can notify the user by vibration. The notification unit 25 may also include a buzzer that can notify the user by sound output. The notification unit 25 may also include an LED that can notify the user by emitting light. Alternatively, the notification unit 25 may have a configuration that can provide any notification.

[0026] The sensor unit 26 can be configured using various detection circuits built into the electronic device 100, and enables acquisition of bioinformation and environmental information. For example, the sensor unit 26 may be configured to include a pulse sensor, a geomagnetic sensor, an acceleration sensor, a gyro sensor, an illuminance sensor, a temperature sensor, a pressure sensor, and other sensors capable of detecting any physical quantity, or may include all or some of these. The pulse sensor detects the pulse of a user wearing the electronic device 100. The geomagnetic sensor detects the geomagnetism at the location of the electronic device 100. The acceleration sensor and the gyro sensor detect changes such as the movement and tilt of the electronic device 100. The illuminance sensor detects the amount of light at the location of the electronic device 100. The temperature sensor detects the air temperature at the location of the electronic device 100. The pressure sensor detects the air pressure and water pressure at the location of the electronic device 100.

[0027] The input unit 27 can be configured using an input unit that detects an action that is an input operation by the user of the electronic device 100 and supplies input information corresponding to the detection result to the microcomputer 11. For example, the input unit 27 may be configured using a push button that can detect a press operation by the user. The input unit 27 may also be configured to include a touch panel stacked on the upper layer of the display unit 24 and be capable of detecting actions that are various touch operations by the user.

[0028] Figure 2 shows the appearance of an electronic watch equipped with timepiece functions as a representative example of electronic device 100. Of these, Figure 2(A) is an appearance diagram showing electronic watch 100A in which the main shape of the front side of the main body, including visible area DS01 of display unit 24, is circular. Figure 2(B) is an appearance diagram showing electronic watch 100B in which the main shape of the front side of the main body, including visible area DS11 of display unit 24, is rectangular with rounded corners.

[0029] The electronic timepiece 100A shown in FIG. 2(A) has an exterior member including a bezel BZ01 on the front side of the case. The electronic timepiece 100A also has a total of five buttons, a first button PB01 to a fifth button PB05, which serve as multiple operation buttons on the side of the case. Of these, the first button PB01, the third button PB03, and the fourth button PB04 are located on the left side. The second button PB02 and the fifth button PB05 are located on the right side. These buttons PB01 to PB05 are included in the input section 27.

[0030] The electronic timepiece 100A is provided with a windshield member made of a light-transmitting material such as transparent glass that matches the circular shape of the front side of the case, and a total of eight cells, from the first cell CE01 to the eighth cell CE08, are arranged between this windshield member and the display unit 24 as the multiple solar cells that make up the solar panel 32. The number of solar cells can be changed as desired according to the specifications of the electronic timepiece 100A. Each of the cells, from the first cell CE01 to the eighth cell CE08, is arranged within a predetermined width range on the inside from the inner periphery of the bezel BZ01 toward the center of the main body, and each cell is configured to be fan-shaped.

[0031] In the electronic timepiece 100A, the solar panel 32 has a connection section that connects the first cell CE01 to the eighth cell CE08 in series. In the electronic timepiece 100A, the solar panel 32 has two terminal sections, a first connection terminal EP01 and a second connection terminal EP02. The arrangement of the terminal sections is not particularly limited, but in the configuration example of the electronic device 100A shown in FIG. 2(A), the first connection terminal EP01 is arranged at the first cell CE01, and the second connection terminal EP02 is arranged at the eighth cell CE08. The first connection terminal EP01 is connected to a positive electrode of a board or the like that constitutes the power supply unit 13. The positive electrode may be wired and connected so as to be able to supply power that charges the secondary battery 31. The second connection terminal EP02 is connected to a negative electrode of a board or the like that constitutes the power supply unit 13. The negative electrode may be connected to ground.

[0032] The electronic timepiece 100B shown in FIG. 2(B) has an exterior member including a bezel BZ11 on the front side of the case. The electronic timepiece 100B also has a total of four buttons, a first button PB11 to a fourth button PB14, which serve as multiple operation buttons on the side of the case. Of these, the first button PB11 and the third button PB13 are located on the left side. The second button PB12 and the fourth button PB14 are located on the right side. These buttons PB11 to PB14 are included in the input section 27.

[0033] In the electronic timepiece 100B, a windshield member is provided to fit the rectangular shape of the front side of the case, and a total of eight cells, from the first cell CE11 to the eighth cell CE18, are arranged between this windshield member and the display unit 24 as the multiple solar cells that make up the solar panel 32. The number of solar cells can be changed as desired according to the specifications of the electronic timepiece 100B. Each of the cells, from the first cell CE11 to the eighth cell CE18, is arranged within a predetermined width range on the inside from the inner periphery of the bezel BZ11 toward the center of the main body, and each may be configured to have a trapezoidal or curved rectangular shape.

[0034] In the electronic timepiece 100B, the solar panel 32 has a connection section that connects the first cell CE11 to the eighth cell CE18 in series. In the electronic timepiece 100B, the solar panel 32 also has two terminal sections, a first connection terminal EP11 and a second connection terminal EP12. In the configuration example of the electronic device 100B shown in FIG. 2(B), the first connection terminal EP11 is disposed at the first cell CE11, and the second connection terminal EP12 is disposed at the eighth cell CE18. The first connection terminal EP11 is connected to a positive electrode of a substrate or the like that constitutes the power supply unit 13. The second connection terminal EP12 is connected to a negative electrode of a substrate or the like that constitutes the power supply unit 13. The connection of the positive electrode and the negative electrode may be the same as in the case of the electronic device 100A.

[0035] In electronic devices 100 such as electronic watches 100A and 100B, the reset timer IC used in the reset signal generating unit 12 may be configured to be constantly energized. In this configuration, a standby current continues to flow regardless of whether a reset is performed or not. If the electronic device 100 can use a large-capacity battery as the secondary battery 31, such as in a smartphone or laptop computer, there is no significant problem with the reset timer IC being constantly energized. However, in timepieces such as electronic watches 100A and 100B, when a small-capacity battery is used to reduce power consumption, the standby current of the reset timer IC may cause a significant problem of consumption of the secondary battery 31.

[0036] Therefore, the electronic device 100 adopts a connection configuration for the reset timer IC used in the reset signal generating unit 12 that allows power to be supplied to the reset timer IC only when charging using a charging mechanism. The charging mechanism of the electronic device 100 is represented by any of the solar panel 32, the external power supply terminal 33, and the wireless power receiving unit 34 included in the power supply unit 13. However, any other electric component capable of charging the secondary battery 31 may be used. The connection configuration is such that power can be supplied to the reset timer IC of the reset signal generating unit 12 by a charging mechanism different from the secondary battery 31 capable of supplying power to the microcomputer 11. By adopting such a connection configuration, appropriate resetting is possible that prevents consumption of the secondary battery 31 due to standby current of the reset timer IC.

[0037] 3 shows an example of a connection configuration including the microcomputer 11, the reset timer IC 121 included in the reset signal generating unit 12, the secondary battery 31 and the solar panel 32 of the power supply unit 13 in the electronic device 100 when the solar panel 32 of the power supply unit 13 serves as the second power supply unit. Of these, Fig. 3(A) shows an example of a connection configuration without a load switch for the reset timer IC 121. Fig. 3(B) shows an example of a connection configuration with a PMOS transistor TR01 as a load switch for the reset timer IC 121.

[0038] The input terminal RST for the reset signal of the microcomputer 11 is connected to the power supply voltage line via a resistor R01. Therefore, during normal operation, the input terminal RST for the reset signal of the microcomputer 11 is pulled up by the power supply voltage, and its voltage level becomes high. The microcomputer 11 has an output terminal FUNC for the reset function, and its voltage level is set to a high level. The power supply voltage of the microcomputer 11 can be supplied by being connected to the secondary battery 31. In this way, the secondary battery 31 is connected to the microcomputer 11 to supply power. Note that the secondary battery 31 is not limited to being directly connected to the microcomputer 11 to supply power, but may be indirectly connected to the microcomputer 11 via other circuits or electronic components such as a power supply IC to supply power. Other connections are also not limited to being directly connected only by wiring, and may include being indirectly connected via circuits or electronic components other than wiring. The power supply voltage of the microcomputer 11 may be connected to a solar panel 32 in addition to the secondary battery 31 to supply power.

[0039] The reset timer IC121 included in the reset signal generating unit 12 has an input terminal VDD for a power supply voltage connected to the solar panel 32. This allows the power supply voltage of the reset timer IC121 to be supplied by the solar panel 32 different from the secondary battery 31. In this way, the reset signal generating unit 12 is supplied with power from the solar panel 32 different from the secondary battery 31. The solar panel 32 is an example of a second power supply unit that is connected to at least the reset timer IC121 to supply power and is different from the secondary battery 31. The reset timer IC121 has an input terminal CNT for count operation connected to the switch SW01 and the output terminal FUNC for the reset function provided in the microcomputer 11. Therefore, when the switch SW01 is off, the voltage level at the input terminal CNT for count operation is set to a high level. In this case, the reset timer IC121 is in a state in which the count value has been initialized and updating has been stopped, and does not generate a reset signal.

[0040] The switch SW01 may be a circuit element that can be switched from off to on in response to a preset input operation, such as a pressing operation using a specific operation button included in the input unit 27. For example, in the electronic timepiece 100A shown in FIG. 2(A), the fifth button PB05 and the switch SW01 may be connected so that the switch SW01 is off when the fifth button PB05 is not pressed, and the switch SW01 is on when the fifth button PB05 is pressed. Also, for example, in the electronic timepiece 100B shown in FIG. 2(B), the fourth button PB14 and the switch SW01 may be connected so that the switch SW01 is off when the fourth button PB14 is not pressed, and the switch SW01 is on when the fourth button PB14 is pressed. The second connection terminal of the switch SW01, which is different from the first connection terminal to which the count operation input terminal CNT of the reset timer IC121 is connected, is grounded. Therefore, when the switch SW01 changes from off to on, the voltage level at the counting input terminal CNT of the reset timer IC121 changes from high to low.

[0041] The reset timer IC121 starts updating the count value by the built-in counter in response to a change in the voltage level at the input terminal CNT for count operation from a high level to a low level. When the updated count value reaches a reset determination value, the reset timer IC121 generates and outputs a reset signal as a signal for resetting the processing by the microcomputer 11. The time required for the count value in the reset timer IC121 to reach the reset determination value can be selected as a reset signal delay time corresponding to the specifications of the reset timer IC121, and may be, for example, 10 seconds, which may be specified in advance. When the reset signal is generated by the reset timer IC121, the voltage level of the input terminal RST for the reset signal provided in the microcomputer 11 changes from a high level to a low level. In response to this, the processor of the microcomputer 11 can reset to an initial state by executing a reset process for initialization, etc. By executing the reset process, the memory contents of the built-in memory of the microcomputer 11 or the volatile memory of the storage unit 23 are cleared. In addition, it is sufficient that the stored value of the built-in register in the processor of the microcomputer 11 is cleared so that the microcomputer 11 can be restarted from the beginning of the control program.

[0042] The solar panel 32 generates power only when light of a specific intensity, such as sunlight, is irradiated. The solar panel 32 is connected to the secondary battery 31 via a diode D01 for preventing counter electromotive force. This prevents the secondary battery 31 from supplying power to the reset signal generating unit 12 including the reset timer IC 121, and allows the solar panel 32 to supply power to the secondary battery 31. In this way, the diode D01 for preventing counter electromotive force is an example of a conductive part that prevents power supply from one side to the other side and allows power supply from the other side to one side. Note that the circuit element for preventing counter electromotive force is not limited to the diode D01, and may be configured using a power supply IC or a MOS transistor. The output of the solar panel 32 is connected to a power supply line LS0. The power supply line LS0 branches into a power supply line LS1 and a power supply line LS2 at a branch point DA1. The power supply line LS1 is connected to an input terminal VDD for a power supply voltage in the reset timer IC 121. The power supply line LS2 is connected to the anode of the diode D01. The cathode of the diode DS1 is connected to the secondary battery 31. Therefore, the power supply lines LS0 to LS2 are an example of a power supply path branched at a branch point DA1 such that the power supply line LS0 is connected to the output of the solar panel 32, one power supply line LS1 is connected to the reset timer IC121, and the other power supply line LS2 is connected to the diode D01.

[0043] In this configuration, when there is no light, the solar panel 32 is in a state where it does not generate or supply voltage. Since the input terminal VDD for the power supply voltage of the reset timer IC 121 is connected to the solar panel 32, the power supply voltage is supplied to the reset timer IC 121 only when there is light, and a signal for resetting the processing by the microcomputer 11 can be generated. In contrast, in places where there is no light, such as at night or while sleeping, the power supply voltage is not supplied to the reset timer IC 121, and the standby current can be suppressed. In addition, since the power supply from the secondary battery 31 is blocked, the reset timer IC 121 can be appropriately reset while preventing the secondary battery 31 from being worn down.

[0044] As an example, the solar panel 32 may generate power to a maximum voltage of about 4.0V. The reset timer IC121 may operate so as to generate a reset signal when a voltage of 2.2V or more is supplied to the input terminal VDD for the power supply voltage. The solar panel 32 may be connected to the input terminal VDD for the power supply voltage of the reset timer IC121 without any particular voltage adjustment circuit. As a result, the reset timer IC121 may be in a power-on state when the power supply from the solar panel 32 is equal to or greater than a threshold value corresponding to the voltage supplied from the solar panel 32 being within the operating voltage range, and may generate a reset signal for resetting the processing by the microcomputer 11 in response to the switch SW01 being turned on. In contrast, the reset timer IC121 is in a power-off state when the power supply from the solar panel 32 is less than the threshold value corresponding to the voltage supplied from the solar panel 32 not being within the operating voltage range, and does not generate a reset signal for resetting the processing by the microcomputer 11 even when the switch SW01 is on. In addition, the reset timer IC 121 may have any connection configuration that, when the power supply from the solar panel 32, which is an example of the second power supply unit, is less than a threshold value, enters a stopped state in which no power supply voltage is supplied and does not generate a reset signal that resets the processing by the microcomputer 11.

[0045] In the event that a software bug occurs and the electronic device 100 becomes inoperable, the user can perform a so-called long press reset by pressing a specific operation button in a bright place where there is light, thereby restarting the microcomputer 11 and restoring it to the initial state. For example, a map application program using location information generated by the GPS signal acquisition unit 21 and a health management application program using pulse information generated by a pulse sensor included in the sensor unit 26 may compete in the execution of processes, causing the microcomputer 11 to freeze due to an increase in the processing load, or a software bug such as a runaway state or an infinite loop state may occur. In these cases, a long press reset corresponding to a pressing operation using a specific operation button such as the fifth button PB05 shown in FIG. 2(A) or the fourth button PB14 shown in FIG. 2(B) can reset the microcomputer 11 to return it to the initial state. Note that the function as a clock device is not reset, and it is sufficient that the time can be measured without resetting the current time.

[0046] For example, when a pressing operation using a specific operation button such as the fifth button PB05 shown in FIG. 2(A) or the fourth button PB14 shown in FIG. 2(B) continues for less than one second, the application program being executed is terminated and the display returns to the time, while when the pressing operation continues for 10 seconds or more, the reset timer IC121 may generate a reset signal. In this way, different functions and operations may be enabled in response to the duration of the operation that is a preset input operation. The operation is not limited to a common operation button that enables multiple functions and operations, including the generation of a reset signal, and may be provided with a dedicated operation button for generating a reset signal. The operation preset in the reset signal generating unit 12 for generating a signal that resets the processing by the microcomputer 11 is not limited to a so-called long press reset, and may be a reset signal that is immediately generated in response to the detection of an input operation such as a pressing operation using a specific operation button. Alternatively, the operation preset in the reset signal generating unit 12 for generating a signal that resets the processing by the microcomputer 11 is not limited to a pressing operation of a single operation button, and may be a pressing operation of multiple operation buttons simultaneously. The pre-set operation is not limited to a pressing operation, but may be a sliding operation, a contact operation, an opening / closing operation, a rotating operation, a moving operation, or any other input operation, as long as a signal to reset the processing by the microcomputer 11 can be generated in response to the pre-set operation.

[0047] 3A, the electronic device 100 may include a reset control circuit including a power supply path by the power supply lines LS0 and LS1 and a reset timer IC121. In this case, the reset control circuit only needs to be capable of generating a signal for resetting the processing by the microcomputer 11. The power supply path by the power supply lines LS0 and LS1 is connected to the output of a solar panel 32, which is a power supply unit different from the secondary battery 31 that is connected to the microcomputer 11 and supplies power. The reset timer IC121 can be connected to the solar panel 32 via the power supply path by the power supply lines LS0 and LS1, and generates a reset signal in response to a preset input operation.

[0048] When the solar panel 32 generates power capable of charging the secondary battery 31, if the reset timer IC121 is only energized in a standby state, the standby current, or current consumption of the reset timer IC121, is about 1 / 10 of the current supplied by the solar panel 32. Therefore, a sufficient current can be secured for charging the secondary battery 31. On the other hand, in order to further reduce power consumption, a PMOS (P-channel Metal-Oxide-Semiconductor) transistor TR01 as shown in FIG. 3B may be disposed between the solar panel 32 and the reset timer IC121 as a load switch. Note that the circuit element serving as the load switch is not limited to the PMOS transistor TR01, and may be configured using a switching IC or a conductive pad.

[0049] The PMOS transistor TR01 has a gate terminal connected to a first connection terminal of the switch SW01, an output terminal FUNC for a reset function provided in the microcomputer 11, and an input terminal CNT for count operation provided in the reset timer IC121. The PMOS transistor TR01 also has a source terminal and a drain terminal connected to an input terminal VDD for a power supply voltage provided in the solar panel 32 and the reset timer IC121. One of the source terminal and the drain terminal of the PMOS transistor TR01 is connected to the power supply line LS1, and the other terminal is connected to the input terminal VDD for the power supply voltage of the reset timer IC121. The power supply line LS1 branches off from the power supply line LS2 at a branch point DA1, and forms a power supply path together with the power supply line LS0 connected to the output of the solar panel 32. In this case, the PMOS transistor TR01 is an example of a switching unit that has a first terminal connected to the solar panel 32 and a second terminal connected to the reset timer IC121 in the power supply path formed by the power supply lines LS0 to LS2, and can switch whether or not power is supplied from the solar panel 32 to the reset timer IC121. In this connection configuration, the gate voltage of the PMOS transistor TR01 is set to a high level corresponding to the switch SW01 being off. At this time, the PMOS transistor TR01 is turned off, so that the power supply from the solar panel 32 to the reset timer IC121 is cut off, and the power supply voltage and drive current are not supplied to the reset timer IC121. When the switch SW01 changes from off to on, the gate voltage of the PMOS transistor TR01 changes from a high level to a low level. In response to this, the PMOS transistor TR01 is turned on, so that the power supply from the solar panel 32 to the reset timer IC121 is permitted, and the power supply voltage and drive current can be supplied to the reset timer IC121.

[0050] Thus, the reset timer IC121 connected to the PMOS transistor TR01 is powered on only when the following conditions are met: the solar panel 32 is generating electricity, and the switch SW01 and the PMOS transistor TR01 are on in response to an input operation such as pressing a specific operation button. On the other hand, when the switch SW01 is off in response to no input operation such as pressing the operation button, the PMOS transistor TR01 is also off, so that no power supply voltage or drive current is supplied to the reset timer IC121 and no standby current flows. In this way, the PMOS transistor TR01 is an example of a switching unit capable of switching whether or not to supply power to the reset timer IC121 from the solar panel 32 in response to an input operation such as pressing the operation button. Also, the PMOS transistor TR01 can be switched to supply power to the reset timer IC121 from the solar panel 32 in response to an input operation such as pressing the operation button. The PMOS transistor TR01 can be switched so as not to supply power from the solar panel 32 to the reset timer IC121 in response to the absence of an input operation such as pressing an operation button. When the duration of an action that is a preset input operation, such as pressing a specific operation button, is equal to or longer than a predetermined time, the reset timer IC121 can generate a reset signal that resets the processing by the microcomputer 11 in response to the establishment of a preset reset condition. Thus, the PMOS transistor TR01 can be switched so as to block power supply from the solar panel 32 to the reset timer IC121 in response to the absence of an action that is an input operation for a long press reset, such as pressing a specific operation button, while allowing power supply from the solar panel 32 to the reset timer IC121 in response to the presence of an action that is an input operation for a long press reset.

[0051] In other words, in the electronic device 100, the reset timer IC121 can generate a reset signal to reset processing by the microcomputer 11 in response to a preset input operation, such as pressing a specific operation button, and in response to the presence of such an input operation, the PMOS transistor TR01 can be switched so as to supply power to the reset timer IC121 from the solar panel 32, and in response to the absence of such an input operation, the PMOS transistor TR01 can be switched so as not to supply power to the reset timer IC121 from the solar panel 32.

[0052] 3B, during normal operation, the device can operate with low power consumption, as in the case where the reset timer IC 121 is not provided, and the secondary battery 31 can be efficiently charged. After the solar panel 32 starts generating power, the reset timer IC 121 can be operated in response to a preset operation, such as pressing a specific operation button. This enables appropriate resetting with reduced standby current.

[0053] 4(A) shows an example of a connection configuration including the microcomputer 11, the reset timer IC 121 included in the reset signal generating unit 12, the secondary battery 31 of the power supply unit 13, and the external power supply terminal 33 in the electronic device 100, in the case where the external power supply terminal 33 capable of supplying power from a wired external power supply serves as the second power supply unit. In this connection example, a charging control IC 331 is provided between the secondary battery 31 and the external power supply terminal 33. The charging control IC 331 only needs to be able to convert the voltage supplied from the external power supply via the external power supply terminal 33, adjust the amount of charging current, and supply power to the secondary battery 31.

[0054] In the connection configuration example shown in FIG. 4(A), the input terminal VDD for the power supply voltage of the reset timer IC121 is connected to the positive terminal of the external power supply terminal 33. The charge control IC331 prevents the secondary battery 31 from supplying power to the reset signal generating unit 12 including the reset timer IC121, and allows the secondary battery 31 to supply power from the external power supply terminal 33. In this way, the charge control IC331 is an example of a conductive part that prevents power supply from one side to the other side and allows power supply from the other side to one side. The output of the external power supply terminal 33 is connected to a power supply line LT0. The power supply line LT0 branches into a power supply line LT1 and a power supply line LT2 at a branch point DB1. The power supply line LT1 is connected to the input terminal VDD for the power supply voltage of the reset timer IC121. The power supply line LT2 is connected to a first terminal of the charge control IC331. A second terminal of the charge control IC331 is connected to the secondary battery 31. Therefore, the power supply lines LT0 to LT2 are an example of a power supply path branched at a branch point DB1 such that the power supply line LT0 is connected to the output of the external power supply terminal 33, one power supply line LT1 is connected to the reset timer IC 121, and the other power supply line LT2 is connected to the charge control IC 331. As a result, during non-connection use in which the external power supply terminal 33 is not wired to the external power supply, the power supply voltage of the microcomputer 11 can be supplied from the secondary battery 31, as in the case where the reset timer IC 121 is not provided, while the power supply voltage is not supplied to the reset timer IC 121, so that operation with low power consumption is possible. In this way, the reset timer IC 121 is prevented from being supplied with power from the secondary battery 31, so that appropriate resetting that prevents consumption of the secondary battery 31 is possible. In this case, the external power supply terminal 33 is an example of a second power supply unit that is a power supply unit that is different from the secondary battery 31 and is connected to at least the reset timer IC 121 to supply power.

[0055] In the unlikely event that a software bug occurs and the electronic device 100 becomes inoperable, the user can connect an external power source to the external power source terminal 33 by wire and press a specific operation button to perform a so-called long press reset, thereby restarting the microcomputer 11 and restoring it to an initial state. The specific operation content corresponding to the long press reset may be the same as that of the connection configuration example shown in FIG.

[0056] In the connection configuration example shown in FIG. 4(A), the external power supply terminal 33 is connected to the input terminal VDD for the power supply voltage of the reset timer IC 121 without any particular voltage adjustment circuit. Alternatively, a voltage adjustment circuit may be provided between the external power supply terminal 33 and the input terminal VDD for the power supply voltage of the reset timer IC 121. Alternatively, the charge control IC 331 may include a power supply for the reset circuit that can be switched on and off in response to the connection state of the external power supply terminal 33. In this case, the input terminal VDD for the power supply voltage of the reset timer IC 121 may be connected to a power supply for the reset circuit provided by the charge control IC 331. The reset timer IC 121 only needs to be able to generate a reset signal for resetting the processing by the microcomputer 11 in response to the switch SW01 being turned on when the power supply from the external power supply terminal 33 is equal to or greater than a threshold value. In contrast, the reset timer IC 121 does not generate a reset signal for resetting the processing by the microcomputer 11 even when the switch SW01 is on when the power supply from the external power supply terminal 33 is less than the threshold value. In addition, the reset timer IC 121 may have any connection configuration that, when the power supply from the external power supply terminal 33, which is connected by wire to an external power supply and is an example of a second power supply unit, is less than a threshold value, enters a stopped state in which no power supply voltage is supplied and does not generate a reset signal that resets the processing by the microcomputer 11.

[0057] 4B shows an example of a connection configuration including the microcomputer 11, the reset timer IC 121 included in the reset signal generating unit 12, the secondary battery 31 of the power supply unit 13, and the wireless power receiving unit 34 in the electronic device 100, in the case where the wireless power receiving unit 34 capable of supplying power received from an external power source by a wireless signal serves as the second power supply unit. In this example of the connection configuration, a charging control IC 341 is provided between the secondary battery 31 and the wireless power receiving unit 34. The charging control IC 341 may be an IC corresponding only to the wireless power receiving unit 34, or may be an IC shared with the charging control IC 331 shown in FIG. 4A. The charging control IC 341 may be any IC that can convert the voltage supplied by a wireless signal from the external power source using the wireless power receiving unit 34 and adjust the amount of charging current to supply power to the secondary battery 31.

[0058] In the connection configuration example shown in FIG. 4(B), the input terminal VDD for the power supply voltage of the reset timer IC121 is connected to the positive terminal of the wireless power receiving unit 34. The charging control IC341 blocks power supply from the secondary battery 31 to the reset signal generating unit 12 including the reset timer IC121, and allows power supply from the external power supply terminal 33 to the secondary battery 31. In this way, the charging control IC341 is an example of a conductive unit that blocks power supply from one side to the other side and allows power supply from the other side to one side. The output of the wireless power receiving unit 34 is connected to the power supply line LU0. The power supply line LU0 branches into a power supply line LU1 and a power supply line LU2 at a branch point DC1. The power supply line LU1 is connected to the input terminal VDD for the power supply voltage of the reset timer IC121. The power supply line LU2 is connected to a first terminal of the charging control IC341. A second terminal of the charging control IC341 is connected to the secondary battery 31. Therefore, the power supply lines LU0 to LU2 are an example of a power supply path branched at a branch point DC1 such that the power supply line LU0 is connected to the output of the wireless power receiving unit 34, one power supply line LU1 is connected to the reset timer IC121, and the other power supply line LU2 is connected to the charging control IC341. As a result, when the wireless power receiving unit 34 is not used for receiving power from an external power source by a radio signal, the power supply voltage of the microcomputer 11 can be supplied from the secondary battery 31, as in the case where the reset timer IC121 is not provided, while the power supply voltage is not supplied to the reset timer IC121, so that operation with low power consumption is possible. In this way, the reset timer IC121 is prevented from being supplied with power from the secondary battery 31, so that appropriate resetting that prevents consumption of the secondary battery 31 is possible. In this case, the wireless power receiving unit 34 is an example of a second power supply unit that is a power supply unit that is connected to at least the reset timer IC121 to supply power and is different from the secondary battery 31.

[0059] In the unlikely event that a software bug occurs and the electronic device 100 becomes inoperable, the user can use a wireless power supply device to supply power from an external power source to the wireless power receiving unit 34 via a wireless signal, and perform a so-called long press reset by pressing a specific operation button, thereby restarting the microcomputer 11 and returning it to an initial state. The specific operation content corresponding to the long press reset may be the same as that of the connection configuration example shown in FIG.

[0060] In the connection configuration example shown in FIG. 4B, the wireless power receiving unit 34 is connected to the input terminal VDD for the power supply voltage of the reset timer IC 121 without any particular voltage adjustment circuit. Alternatively, a voltage adjustment circuit may be provided between the wireless power receiving unit 34 and the input terminal VDD for the power supply voltage of the reset timer IC 121. Alternatively, the charging control IC 341 may include a power supply for a reset circuit that can be switched on and off in response to a power receiving state using the wireless power receiving unit 34. In this case, the input terminal VDD for the power supply voltage of the reset timer IC 121 may be connected to a power supply for the reset circuit provided by the charging control IC 341. The reset timer IC 121 may be capable of generating a reset signal for resetting the processing by the microcomputer 11 in response to the switch SW01 being turned on when the power supply by the wireless power receiving unit 34 is equal to or higher than a threshold value. In contrast, when the power supply by the wireless power receiving unit 34 is less than the threshold, the reset timer IC 121 does not generate a reset signal for resetting the processing by the microcomputer 11 even when the switch SW01 is on. In addition, the reset timer IC 121 may have any connection configuration that goes into a stopped state in which no power supply voltage is supplied and does not generate a reset signal for resetting the processing by the microcomputer 11 when the power supply by the wireless power receiving unit 34, which is an example of a second power supply unit that supplies power received from an external power source by a wireless signal, is less than the threshold.

[0061] 4(A) and 4(B), the PMOS transistor TR01 serving as a load switch is not provided between the external power supply terminal 33 or the wireless power receiving unit 34 and the reset timer IC 121. In contrast, the PMOS transistor TR01 serving as a load switch may be provided between the external power supply terminal 33 or the wireless power receiving unit 34 and the reset timer IC 121. However, when a stable and sufficient supply of power can be received from an external power supply such as a commercial power supply, the standby current of the reset timer IC 121 does not significantly affect the charging of the secondary battery 31. In such a case, it is not necessary to provide a PMOS transistor TR01 serving as a load switch.

[0062] In the example of the connection configuration shown in FIG. 4(A), when the PMOS transistor TR01 is disposed between the external power supply terminal 33 and the reset timer IC121, one of the source terminal and the drain terminal of the PMOS transistor TR01 is connected to the power supply line LT1, and the other terminal is connected to the input terminal VDD for the power supply voltage of the reset timer IC121. The power supply line LT1 branches off from the power supply line LT2 at the branch point DB1, and forms a power supply path together with the power supply line LT0 connected to the output of the external power supply terminal 33. In this case, the PMOS transistor TR01 is an example of a switching unit that has a first terminal connected to the external power supply terminal 33 and a second terminal connected to the reset timer IC121 in the power supply path formed by the power supply lines LT0 to LT2, and can switch whether or not to supply power from the external power supply terminal 33 to the reset timer IC121. The PMOS transistor TR01 can be switched to supply power from the external power supply terminal 33 to the reset timer IC121 in response to the presence of an input operation such as pressing an operation button. In contrast, the PMOS transistor TR01 can be switched so as not to supply power to the reset timer IC121 from the external power supply terminal 33 in response to no input operation such as pressing an operation button. In such an electronic device 100, the reset timer IC121 can generate a reset signal for resetting processing by the microcomputer 11 in response to a preset input operation such as pressing a specific operation button, and can switch the PMOS transistor TR01 so as to supply power to the reset timer IC121 from the external power supply terminal 33 in response to the presence of an input operation, and can switch the PMOS transistor TR01 so as not to supply power to the reset timer IC121 from the external power supply terminal 33 in response to no input operation.

[0063] 4A, the electronic device 100 may include a reset control circuit including a power supply path by the power supply lines LT0 and LT1 and a reset timer IC 121. In this case, the reset control circuit only needs to be capable of generating a signal for resetting the processing by the microcomputer 11. The power supply path by the power supply lines LT0 and LT1 is connected to the output of an external power supply terminal 33, which is a power supply unit different from the secondary battery 31 that is connected to the microcomputer 11 and supplies power. The reset timer IC 121 is connectable to the external power supply terminal 33 via the power supply path by the power supply lines LT0 and LT1, and generates a reset signal in response to a preset input operation.

[0064] In the example of the connection configuration shown in FIG. 4B, when the PMOS transistor TR01 is disposed between the wireless power receiving unit 34 and the reset timer IC121, one of the source terminal and the drain terminal of the PMOS transistor TR01 is connected to the power supply line LU1, and the other terminal is connected to the input terminal VDD for the power supply voltage of the reset timer IC121. The power supply line LU1 branches off from the power supply line LU2 at a branch point DC1, and forms a power supply path together with the power supply line LU0 connected to the output of the wireless power receiving unit 34. In this case, the PMOS transistor TR01 is an example of a switching unit that has a first terminal connected to the wireless power receiving unit 34 and a second terminal connected to the reset timer IC121 in the power supply path formed by the power supply lines LU0 to LU2, and is capable of switching whether or not to supply power from the wireless power receiving unit 34 to the reset timer IC121. The PMOS transistor TR01 is switchable so as to supply power from the wireless power receiving unit 34 to the reset timer IC121 in response to the presence of an input operation such as pressing an operation button. In contrast, the PMOS transistor TR01 can be switched so as not to supply power to the reset timer IC121 from the wireless power receiving unit 34 in response to the absence of an input operation such as pressing an operation button. In such an electronic device 100, the reset timer IC121 can generate a reset signal for resetting processing by the microcomputer 11 in response to an action that is a preset input operation such as pressing a specific operation button, and can switch the PMOS transistor TR01 so as to supply power to the reset timer IC121 from the wireless power receiving unit 34 in response to the presence of an input operation, and can switch the PMOS transistor TR01 so as not to supply power to the reset timer IC121 from the wireless power receiving unit 34 in response to the absence of an input operation.

[0065] In the case of the connection configuration example shown in Fig. 4(B), the electronic device 100 may include a reset control circuit including a power supply path by the power supply lines LU0 and LU1 and a reset timer IC121. In this case, the reset control circuit only needs to be capable of generating a signal for resetting the processing by the microcomputer 11. The power supply path by the power supply lines LU0 and LU1 is connected to the output of the wireless power receiving unit 34, which is a power supply unit different from the secondary battery 31 that is connected to the microcomputer 11 and supplies power. The reset timer IC121 is connectable to the wireless power receiving unit 34 via the power supply path by the power supply lines LU0 and LU1, and generates a reset signal in response to a preset input operation.

[0066] 5 shows another example of a connection configuration including the microcomputer 11, the reset timer IC 121 included in the reset signal generating unit 12, and the secondary battery 31 of the power supplying unit 13, when a PMOS transistor TR02 similar to the PMOS transistor TR01 in FIG. 3B is used as a load switch for the reset timer IC 121. In this example of a connection configuration, all or some of the solar panel 32, the external power supply terminal 33, and the wireless power receiving unit 34 included in the power supplying unit 13 may be configured to charge the secondary battery 31 by wiring connection separate from the reset timer IC 121. The circuit element serving as the load switch is not limited to the PMOS transistor TR02, as in the case of the PMOS transistor TR01, and may be configured using a switching IC or a conductive pad.

[0067] The PMOS transistor TR02 has a gate terminal connected to a first connection terminal of the switch SW01, an output terminal FUNC for a reset function of the microcomputer 11, and an input terminal CNT for count operation of the reset timer IC121. The PMOS transistor TR02 has a source terminal and a drain terminal connected to an input terminal VDD for a power supply voltage of the secondary battery 31 and the reset timer IC121. One of the source terminal and the drain terminal of the PMOS transistor TR02 is connected to the power supply line LV0, and the other terminal is connected to the input terminal VDD for a power supply voltage of the reset timer IC121. The power supply line LV0 is an example of a power supply path connected to the secondary battery 31 that is connected to the microcomputer 11 and supplies power. In this case, the PMOS transistor TR02 has a first terminal connected to the secondary battery 31 and a second terminal connected to the reset timer IC121 in the power supply path formed by the power supply line LV0, and is an example of a switching unit that can switch whether or not power is supplied from the secondary battery 31 to the reset timer IC121. In this connection example, the gate voltage of the PMOS transistor TR02 is set to a high level in response to the switch SW01 being off. At this time, the PMOS transistor TR02 is off, cutting off the power supply from the secondary battery 31 to the reset timer IC121, and no power supply voltage or drive current is supplied to the reset timer IC121. When the switch SW01 changes from off to on, the gate voltage of the PMOS transistor TR02 changes from a high level to a low level. In response to this, the PMOS transistor TR02 is turned on, allowing power supply from the secondary battery 31 to the reset timer IC121, and enabling the power supply voltage and drive current to be supplied to the reset timer IC121.

[0068] The secondary battery 31 may be supplied with power generated by a solar panel 32 that is connected by wiring separately from the reset timer IC 121, and may be in a charged state. Alternatively, the secondary battery 31 may be supplied with power from an external power source via an external power source terminal 33 that is connected by wiring separately from the reset timer IC 121, and may be in a charged state. Alternatively, the secondary battery 31 may be supplied with power received from an external power source by a wireless signal using a wireless power receiving unit 34 that is connected by wiring separately from the reset timer IC 121, and may be in a charged state. In this way, the reset timer IC 121 to which the PMOS transistor TR02 is connected is in a power-on state only when the following conditions are met: the secondary battery 31 is in a charged state, and the switch SW01 and the PMOS transistor TR02 are on in response to an operation such as pressing an operation button. On the other hand, when the switch SW01 is off in response to the absence of an input operation such as pressing an operation button, the PMOS transistor TR02 is also off, so that the power supply voltage and drive current are not supplied to the reset timer IC121, and standby current does not flow. In this way, the PMOS transistor TR02 is an example of a switching unit capable of switching whether or not to supply power from the secondary battery 31 to the reset timer IC121 in response to an input operation such as pressing an operation button. Also, the PMOS transistor TR02 can be switched to supply power from the secondary battery 31 to the reset timer IC121 in response to the presence of an input operation such as pressing an operation button. The PMOS transistor TR02 can be switched to not supply power from the secondary battery 31 to the reset timer IC121 in response to the absence of an input operation such as pressing an operation button. Then, when the duration of an operation that is a preset input operation, such as pressing a specific operation button, is equal to or longer than a predetermined time, the reset timer IC121 can generate a reset signal that resets the processing by the microcomputer 11 in response to the establishment of a preset reset condition.Therefore, the PMOS transistor TR02 can be switched to block power supply from the secondary battery 31 to the reset timer IC121 in response to the absence of an operation that serves as an input operation for a long press reset, such as a press operation using a specific operation button, and to allow power supply to the reset timer IC121 from the secondary battery 31 in response to the presence of an operation that serves as an input operation for a long press reset.

[0069] In the case of the connection configuration example shown in FIG. 5, in the electronic device 100, the reset timer IC121 can generate a reset signal to reset processing by the microcomputer 11 in response to a preset input operation, such as pressing a specific operation button, and can switch the PMOS transistor TR02 to supply power to the reset timer IC121 from the secondary battery 31 in response to the presence of an input operation, and can switch the PMOS transistor TR02 to not supply power to the reset timer IC121 from the secondary battery 31 in response to the absence of an input operation.

[0070] In the case of the connection configuration example shown in FIG. 5, the electronic device 100 may include a reset control circuit including a power supply path by the power supply line LV0, a ​​reset timer IC121, and a PMOS transistor TR02. In this case, the reset control circuit may be capable of generating a signal for resetting the processing by the microcomputer 11. The power supply path by the power supply line LV0 is connected to the secondary battery 31 that is connected to the microcomputer 11 and supplies power. The reset timer IC121 can be connected to the secondary battery 31 via the power supply path by the power supply line LV0, and generates a reset signal in response to a preset input operation. In the power supply path by the power supply line LV0, one of the source terminal and the drain terminal of the PMOS transistor TR02 is connected to the secondary battery 31, and the other terminal is connected to the reset timer IC121. In addition, the PMOS transistor TR02 can be switched to supply power from the secondary battery 31 in response to a preset input operation, such as a press operation using a specific operation button. On the other hand, the PMOS transistor TR02 is switchable so as not to supply power from the secondary battery 31 to the reset timer IC121 in response to the absence of an input operation.

[0071] 5, during normal operation, the device can operate with low power consumption, similar to when the reset timer IC 121 is not provided. After the secondary battery 31 is charged to a level that allows it to supply power supply voltage, the reset timer IC 121 can be operated in response to a preset operation, such as pressing a specific operation button. This allows for appropriate resetting with reduced standby current.

[0072] The procedure for the long press reset, which corresponds to the duration of a preset operation, such as a pressing operation using a specific operation button, being longer than a certain time, may be made recognizable to the user by being described in the instruction manual for the electronic device 100. In addition, the procedure for the long press reset may be made recognizable to the user by displaying an image on the display unit 24, etc., depending on the type of error that has occurred. For example, when an abnormality occurs in all or a part of the sensor unit 26, the microcomputer 11 can execute various processes, but may not obtain an appropriate execution result in a specific application program. In such a case, the processor of the microcomputer 11 may execute a prepared error process and read image data for displaying an error from the built-in memory or an external memory included in the storage unit 23, thereby notifying the user of the pressing operation required for the long press reset, etc., by displaying an image on the display unit 24 so that the user can recognize it.

[0073] In electronic device 100, the battery capable of supplying power to microcomputer 11 and other components is not limited to a rechargeable battery such as secondary battery 31, but may be a non-rechargeable disposable button battery, etc. Even in this case, it is sufficient to prevent battery consumption and enable appropriate resetting by using a connection configuration in which power is not supplied from the battery to reset timer IC 121 of reset signal generating unit 12, or a connection configuration in which power is allowed to be supplied from the battery to reset timer IC 121 in response to switch SW01 being turned on.

[0074] In addition, the specific details of the configuration, control procedure, display examples, etc. shown in the above embodiment can be appropriately changed without departing from the spirit of the present invention. The scope of the present invention is not limited to the above embodiment, but includes the scope of the invention described in the claims and its equivalents. [Explanation of symbols]

[0075] 11...microcomputer, 12...reset signal generating unit, 13...power supply unit, 21...communication unit, 22...GPS signal acquiring unit, 23...storage unit, 24...display unit, 25...alarm unit, 26...sensor unit, 27...input unit, 31...secondary battery, 32...solar panel, 33...external power supply terminal, 34...wireless power receiving unit, 100...electronic device, 100A, 100B...electronic clock, 121...reset timer IC, 331, 341...charging control IC, BZ01, BZ11...bezel, CE01~ CE08, CE11~CE18...cells, CNT, RST, VDD...input terminals, D01...diodes, DA1, DB1, DC1...branching points, DS01, DS11...visible areas, EP01, EP02, EP11, EP12...connection terminals, FUNC...output terminals, LS0~LS2, LT0~LT2, LU0~LU2, LV0...power supply lines, PB01~PB05, PB11~PB14...buttons, R01...resistors, SW01...switches, TR01, TR02...PMOS transistors

Claims

1. A processing section; A reset unit capable of generating a signal to reset a process by the processing unit; A first power supply unit including a battery and connected to the processing unit to supply power; A second power supply unit that is a power supply unit different from the first power supply unit and is connected to at least the reset unit to supply power. electronic equipment.

2. The reset unit does not generate the signal when the power supply by the second power supply unit is less than a threshold value.

2. The electronic device according to claim 1.

3. The reset unit is capable of generating the signal in response to a preset input operation.

2. The electronic device according to claim 1.

4. a switching unit capable of switching whether or not power is supplied from the second power supply unit to the reset unit in response to the input operation; 4. The electronic device according to claim 3.

5. The switching unit is A reset unit is disposed between the second power supply unit and the reset unit. In response to the input operation, a switch is made so that power is supplied from the second power supply unit to the reset unit, In response to the absence of the input operation, the power supply from the second power supply unit to the reset unit is switched off.

5. The electronic device according to claim 4.

6. The reset unit is capable of generating the signal when a duration of the input operation is equal to or longer than a predetermined time.

4. The electronic device according to claim 3.

7. The second power supply unit is capable of supplying power to the processing unit, The first power supply unit does not supply power to the reset unit.

2. The electronic device according to claim 1.

8. a conductive portion disposed between the first power supply portion and the second power supply portion, the conductive portion blocking power supply from the first power supply portion to the reset portion and allowing power supply from the second power supply portion to the first power supply portion; 8. The electronic device according to claim 7.

9. a branched power supply path is connected to an output of the second power supply unit, one of which is connected to the reset unit and the other of which is connected to the conductive unit; 9. The electronic device according to claim 8.

10. the first power supply unit includes, as the battery, a secondary battery that can be charged by the second power supply unit; The second power supply unit includes a solar panel capable of generating power to be stored in the secondary battery. The electronic device according to claim 1 .

11. the first power supply unit includes, as the battery, a secondary battery that can be charged by the second power supply unit; The second power supply unit includes an external power supply terminal that can supply power to be stored in the secondary battery from an external power supply connected by a wire. The electronic device according to claim 1 .

12. the first power supply unit includes, as the battery, a secondary battery that can be charged by the second power supply unit; The second power supply unit includes a power receiving unit capable of receiving power from an external power source via a wireless signal and supplying the power to be stored in the secondary battery. The electronic device according to claim 1 .

13. It is a wearable device that can be worn on the body. The electronic device according to claim 1 .

14. A processing section; A reset unit capable of generating a signal to reset a process by the processing unit; a power supply unit including a battery and connected to the processing unit and the reset unit to supply power; A switching unit is disposed between the power supply unit and the reset unit and is capable of switching between power supply and non-power supply, the reset unit is capable of generating the signal in response to a preset input operation, The switching unit is In response to the input operation, a switch is made so as to supply power from the power supply unit to the reset unit, In response to the absence of the input operation, the power supply unit is switched not to supply power to the reset unit. electronic equipment.

15. An electronic clock capable of measuring the current time, A processing section; A reset unit capable of generating a signal to reset a process by the processing unit; A first power supply unit including a battery and connected to the processing unit to supply power; A second power supply unit that is a power supply unit different from the first power supply unit and is connected to at least the reset unit to supply power. Electronic clock.

16. An electronic clock capable of measuring the current time, A processing section; A reset unit capable of generating a signal to reset a process by the processing unit; a power supply unit including a battery and connected to the processing unit and the reset unit to supply power; A switching unit is disposed between the power supply unit and the reset unit and is capable of switching between power supply and non-power supply, the reset unit is capable of generating the signal in response to a preset input operation, The switching unit is In response to the input operation, a switch is made so that power is supplied from the power supply unit to the reset unit, In response to the absence of the input operation, the power supply unit is switched so as not to supply power to the reset unit. Electronic clock.

17. A reset control circuit capable of generating a signal to reset a process by a processing unit, a power supply path connected to an output of a second power supply unit that is a power supply unit different from a first power supply unit that includes a battery connected to the processing unit and supplies power; a signal generating unit that is connectable to the second power supply unit via the power supply path and generates the signal in response to a preset input operation, Reset control circuit.

18. A reset control circuit capable of generating a signal to reset a process by a processing unit, a power supply path connected to a power supply unit including a battery connected to the processing unit for supplying power; a signal generating unit that is connectable to the power supply unit via the power supply path and that generates the signal in response to a preset input operation; a switching unit having a first terminal connected to the power supply unit and a second terminal connected to the signal generating unit in the power supply path, The switching unit is In response to the input operation, a switch is made to supply power from the power supply unit to the signal generation unit, In response to the absence of the input operation, the power supply unit is switched not to supply power to the signal generating unit. Reset control circuit.

19. A reset method for an electronic device including at least a processing unit, a reset unit, a first power supply unit including a battery, and a second power supply unit different from the first power supply unit, The first power supply unit is connected to the processing unit to supply power thereto, the second power supply unit is connected to the reset unit to supply power thereto; The reset unit can generate a signal for resetting a process by the processing unit in response to a preset input operation. How to reset.

20. A reset method for an electronic device including at least a processing unit, a reset unit, a power supply unit including a battery, and a switching unit disposed between the power supply unit and the reset unit, The power supply unit is connected to the processing unit to supply power thereto, The reset unit is capable of generating a signal for resetting a process by the processing unit in response to a preset input operation; The switching unit is capable of switching the power supply unit to supply power to the reset unit in response to the input operation, The switching unit is capable of switching the power supply unit not to supply power to the reset unit in response to the absence of the input operation. How to reset.

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