JP2018159644A - Time device, method for correcting time, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use a time display appropriate to a situation and to increase the accuracy of the time obtained by measuring each time display.SOLUTION: A smart watch 100 includes: a time measuring unit 114 for measuring a time; an RTC 214 for measuring a time less accurately than the time measuring unit 114 does; a satellite electric wave receiving module 24 for acquiring more accurate time information than the RTC214 does, using electric waves received from a positioning satellite; and a sub-CPU 211 for controlling the satellite electric wave receiving module 24. The sub-CPU 211 acquires time information from the satellite electric wave receiving module 24 and corrects the time of the RTC 214 by the acquired time information.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a timepiece device, a time correction method, and a program.

  Conventionally, there is a clock device that has a display unit and can display time (see Patent Document 1).

JP 2006-101505 A

  However, in the prior art, when displaying the time, there is a need to appropriately use the time display according to the situation, and to improve the accuracy of the time obtained in the time measurement of each time display.

  An object of the present invention is to appropriately use time display according to the situation, and to improve the accuracy of the time obtained when measuring each time display.

  In order to solve the above-mentioned problems, a timepiece device of the present invention includes a first timekeeping means for timekeeping, a second timekeeping means for timekeeping with lower time accuracy than the first timekeeping means, and a radio wave from a positioning satellite. A time acquisition unit that acquires time information with higher accuracy than the second time measurement unit, and a control unit that controls the time acquisition unit, wherein the control unit acquires the time information from the time acquisition unit The time of the second time measuring means is corrected with the acquired time information.

  ADVANTAGE OF THE INVENTION According to this invention, the time display can be used properly according to a condition, and the precision of the time obtained in the time measurement of each time display can be improved.

(A) is a front view of the smartwatch of the embodiment of the present invention. (B) is a front view of a smartwatch showing display screens of a first display unit and a second display unit. It is a block diagram which shows the function structure of a smart watch. It is a flowchart which shows a 1st time display process. It is a flowchart which shows a 2nd time display process.

  Embodiments according to the present invention will be described below in detail with reference to the accompanying drawings. The present invention is not limited to the illustrated example.

  The embodiment according to the present invention will be described with reference to FIGS. First, with reference to FIG. 1 and FIG. 2, a smart watch 100 as a timepiece device of the present embodiment will be described. FIG. 1A is a front view of the smart watch 100 of the present embodiment. FIG. 1B is a front view of the smartwatch 100 showing display screens of the first display unit 12 and the second display unit 22.

  As shown in FIG. 1A, the smart watch 100 is an arm-mounted information processing apparatus that can mount the main body 1 on the user's arm using the band 2. The main body 1 of the smart watch 100 includes a frame 3, a display screen 4, a push button switch B1, and the like.

  The frame 3 exposes and supports the display screen 4 on one surface, and holds functional configurations related to various operations described later. When the push button switch B1 is pressed, the operation mode is returned from a later-described sleep mode.

On the display screen 4, two display portions are stacked. As shown in FIG. 1B, a display screen 12a of the first display unit 12 (see FIG. 2) is provided at the lower part, and a display screen 22a of the second display unit 22 (see FIG. 2) is provided at the upper part. Is provided. That is, FIG. 1A shows a state in which display is performed by the first display unit 12 and the display screen 22a of the second display unit 22 transmits the display by the first display unit 12.
A touch sensor (touch panel) (not shown) is provided at an upper part of the second display unit 22 so that a user operation can be accepted. A push button switch B1 is provided on the side surface of the frame 3 so as to be able to accept a user operation together with the touch sensor.

The first display unit 12 has a color liquid crystal display screen based on a dot matrix, and switches various displays related to various functions and / or performs them in parallel according to a user input operation or various program operations.
The second display unit 22 has a display screen that can display the time by simplified display with lower power consumption than the first display unit 12, and performs, for example, a monochrome liquid crystal display by a segment method. Alternatively, a memory in-pixel liquid crystal (MIP liquid crystal), a PN liquid crystal (Polymer Network), or the like may be used for the display screen 22a of the second display unit 22. In addition, the display screen 22a of the second display unit 22 can transmit the display content of the first display unit 12 upward without applying any display by applying a predetermined voltage.

FIG. 2 is a block diagram showing a functional configuration of the smart watch 100.
The smart watch 100 includes a main microcomputer 11 as a first control module, a first display unit 12 as a first display means, an operation receiving unit 13, a wireless communication controller 14, an external storage unit 15, and a second control. A sub-microcomputer 21 as a module, a second display unit 22 as a second display unit, a measurement unit 23, a satellite radio wave reception module 24 as a time acquisition unit, a switch 25, and a PMIC (Power Management Integrated Circuit) 31 And so on.

  The main microcomputer 11 is a main control unit including a main CPU (Central Processing Unit) 111, a RAM (Random Access Memory) 112, a storage unit 113, a time measuring unit 114 as a first time measuring means, and the like. . The main microcomputer 11 receives power supply from the power supply via the PMIC 31 and controls the operations of the respective units such as the first display unit 12, the operation receiving unit 13, the wireless communication controller 14, and the external storage unit 15.

The main CPU 111 performs various arithmetic processes and controls the operation of the smart watch 100 in a normal operation state. The main CPU 111 acquires measurement data from the satellite radio wave reception module 24 and the measurement unit 23 from the sub-microcomputer 21 and performs various processes (information processing).
The RAM 112 provides a working memory space to the main CPU 111 and stores temporary data.

  The storage unit 113 is a nonvolatile memory such as a flash memory that stores control programs (including various application programs (applications)) executed by the main CPU 111 and setting data. The data stored in the storage unit 113 includes a program such as a first time display program for executing a first time display process to be described later, an application using a positioning result (positioning information) by the satellite radio wave reception module 24, and the like. Various data are included.

  The timer 114 counts the current date and time (time information) based on the control of the main CPU 111. The timer unit 114 includes a counter and counts the date and time with higher accuracy than the RTC 214 described later in accordance with the operation clock frequency of the main microcomputer 11.

  The main CPU 111 can be temporarily suspended when no operation is required. For example, when a predetermined command is received by the operation receiving unit 13 or when there is no operation and a predetermined time has elapsed, the entire operation of the main microcomputer 11 is stopped and a transition is made to a sleep mode in which the sub-microcomputer 21 operates. Shall. In smart watch 100, two modes of a sleep mode and an operation mode are prepared as operation modes. A mode in which the main microcomputer 11 and the sub microcomputer 21 operate is referred to as an operation mode. The sleep mode and the operation mode will be described more specifically later.

  The above-described first display unit 12 performs display operation mainly by the control operation of the main microcomputer 11 (main CPU 111). Here, when the operation of the main microcomputer 11 is stopped, the display is turned off. A limited display may be made possible by the control operation by the (sub CPU 211).

  The operation reception unit 13 includes the above-described touch sensor, receives an input operation from the outside (that is, a user), converts the operation content into an electric signal, and outputs the electric signal to the main CPU 111. When the input operation to the touch sensor is performed, when the main CPU 111 is inactive (in a standby state), this electric signal becomes an operation resumption signal, and the operation of the main CPU 111 is resumed.

  The wireless communication controller 14 is a controller for performing wireless communication with an external electronic device (external device). The wireless communication standard is not particularly limited, and examples thereof include short-range wireless communication such as Bluetooth (Bluetooth (registered trademark)), wireless LAN (IEEE 802.11), and the like. The main microcomputer 11 (main CPU 111) can acquire necessary information, programs, update data thereof, and the like from the outside via the wireless communication controller 14. Examples of the external device that is a communication connection target include a smartphone, a mobile phone, a tablet terminal, a PDA (Personal Digital Assistant), an external server via an access point, and the like.

  The external storage unit 15 is a nonvolatile large-capacity storage, and stores map data for performing navigation and map display. The external storage unit 15 is not limited to the one built in the smart watch 100, and may be provided with a removable portable small storage medium such as a flash memory.

  The sub microcomputer 21 includes a sub CPU 211 as a control unit, a RAM 212, a storage unit 213, an RTC 214 (real time clock) as a second timing unit, a buffer memory 215, and the like. The sub-microcomputer 21 receives power supply from the power source via the PMIC 31 and operates. The sub-microcomputer 21 controls the operation of the second display unit 22, the measurement unit 23, and the satellite radio wave reception module 24 and the exchange of data with the main microcomputer 11. The sub-microcomputer 21 consumes power (during normal operation and maximum; mainly based on TDP (thermal design power) of the CPU and the influence of the capacity and number of RAM, etc.) Is a sub-control unit for performing continuously performed operations with relatively low power consumption, which is smaller than the power consumption of the main microcomputer 11 (in normal operation and at the maximum time, respectively).

The sub CPU 211 performs various arithmetic processes and controls the operation of the sub microcomputer 21. The sub CPU 211 may have lower power consumption (TDP or the like) than the main CPU 111, and accordingly, may have lower capacity than the main CPU 111. As long as the power supply from the PMIC 31 is not insufficient, the sub CPU 211 basically maintains the minimum operation. When the minimum operation is periodically performed at a predetermined interval, the operation other than the period of operation at the predetermined interval may be paused (set to a standby state).
The RAM 212 provides a working memory space to the sub CPU 211 and stores temporary data. The RAM 212 retains stored data as long as the power supply from the PMIC 31 is normally performed even when the sub CPU 211 performs the operation intermittently as described above.

  The storage unit 213 is a non-volatile memory such as a flash memory that stores a control program (including various application programs (applications)) executed by the sub CPU 211 and setting data. The program 213 a stored in the storage unit 213 includes a second time display program for executing a second time display process (described later) executed in the sub-microcomputer 21 and a positioning control program for the satellite radio wave reception module 24. The storage unit 213 stores firmware as a control program for operating the satellite radio wave reception module 24.

  The RTC 214 is a normal one that performs a timekeeping operation of date and time (time information). As described above, the RTC 214 has a lower accuracy than the timekeeping operation by the timekeeping unit 114 of the main microcomputer 11, but on the other hand, the timekeeping operation by the timekeeping unit 114. Therefore, the date and time are continuously counted even when the main microcomputer 11 is stopped or the sub-microcomputer 21 is on standby.

  The buffer memory 215 is a volatile memory that temporarily stores the positioning result acquired by the satellite radio wave receiving module 24, and an SRAM (Static RAM) or the like is used. The positioning result acquired by the satellite radio wave receiving module 24 is once stored in the buffer memory 215 and output to the main microcomputer 11 at an appropriate timing.

  As described above, the second display unit 22 consumes less power than the first display unit 12 and is used for displaying time during the display operation. When the MIP liquid crystal is used for the display screen, the second display unit 22 can lower the display content update frequency under the control of the sub CPU 211.

  The measurement unit 23 includes a sensor that measures a physical quantity indicating the motion state of the smart watch 100. Here, the measurement unit 23 includes an acceleration sensor, and in addition to this, may include an orientation sensor (geomagnetic field sensor), an atmospheric pressure sensor (used as an altitude sensor), and the like. In addition, the measurement unit 23 is a tilt sensor that detects a predetermined posture of the smartwatch 100, in this case, the tilted state of the smartwatch 100 when the user lifts his arm in front of the user so that the display screen of the smartwatch 100 is easy to see. You may have.

The satellite radio wave receiving module 24 captures, receives and demodulates radio waves from positioning satellites, here at least radio waves from positioning satellites (GNSS satellites) related to GNSS (Global Navigation Satellite System), and acquires time points and positioning. This is a module (satellite radio wave receiving LSI) capable of performing The radio wave from the positioning satellite includes time information measured by the positioning satellite. The satellite radio wave receiving module 24 has an antenna (not shown) and generates radio waves (for example, 1.57542 GHz (L1 band of GPS (Global Positioning System) in the GNSS satellite)) based on the control of the sub microcomputer 21 (sub CPU 211). Receive and despread spectrum to obtain and decode navigation messages. The satellite radio wave receiving module 24 performs positioning calculation based on the navigation message acquisition and decoding results. The obtained date and current position and current position are output in a predetermined format.
Note that the satellite radio wave receiving module 24 may be configured to receive radio waves from positioning satellites other than the GNSS system to acquire time and perform positioning.

  The satellite radio wave reception module 24 includes a memory 241 and stores temporary data necessary for operation. The memory 241 is a volatile memory such as SRAM (Static RAM). During operation, the memory 241 includes time information acquisition, a control program (firmware) necessary for positioning operation, navigation message format information for each positioning satellite, and each positioning satellite. The acquired trajectory information (ephemeris, almanac) is stored. The memory 241 can maintain the operation even when the operation of the reception operation unit of the satellite radio wave reception module 24 is stopped, but when the operation of the memory 241 is stopped and restarted, At least a part (firmware or the like) of these is re-acquired from the storage unit 213 of the sub-microcomputer 21. The satellite radio wave receiving module 24 can acquire radio waves from the number of positioning satellites necessary for positioning and acquire ephemeris, respectively, and then perform positioning calculation continuously to obtain the current position. The calculation interval of the current position in this case is not particularly limited, but here is an interval of 1 second.

  The switch 25 is an on switch that accepts a predetermined user operation for restarting the main microcomputer 11 when the main microcomputer 11 is in the sleep mode. The switch 25 may be provided exclusively or may be used in combination with the push button switch B1.

The PMIC 31 controls power supply from the power source to the main microcomputer 11 and the sub-microcomputer 21. The PMIC 31 includes, for example, a switch for determining whether or not power can be output to the main microcomputer 11 and the sub-microcomputer 21, a DC / DC converter that adjusts an output voltage, and the like, and supplies appropriate power when the main microcomputer 11 and the sub-microcomputer 21 operate. Supply to these.
Further, FIG. 2 is an example, and a power supply IC that supplies power to the main microcomputer 11 and the sub microcomputer 21 instead of the PMIC 31 may be prepared.

  Next, the operation of the smart watch 100 will be described with reference to FIGS. 3 and 4. FIG. 3 is a flowchart showing the first time display process. FIG. 4 is a flowchart showing the second time display process.

  First, a sleep mode and an operation mode will be described as operation modes of the smartwatch 100. As described above, the operation of the main microcomputer 11 can be switched between the operation state (operation mode) and the sleep state (sleep mode) by switching the operation of the main CPU 111. In the sleep mode, the display by the first display unit 12 is also turned off when the operation of the main CPU 111 is stopped. Here, it is assumed that in the sleep mode, the storage operation of the RAM 112 is completely stopped (shut down) when the operation of the main CPU 111 is stopped. However, in the sleep mode, the storage operation of the RAM 112 may be maintained when the operation of the main CPU 111 is stopped (standby state), and the normal operation may be quickly restored when the operation of the main CPU 111 is resumed. Alternatively, in the sleep mode, when the operation of the main CPU 111 is stopped, the contents stored in the RAM 112 may be saved in the storage unit 113 and the operation may be stopped (sleep state) so that the recovery is possible. Even when the sleep mode is continued, the main microcomputer 11 temporarily returns to the operation state at a predetermined interval (maintenance operation interval), for example, once every 10 minutes, and performs a predetermined process (maintenance operation). Also good.

Transition to the sleep mode occurs when an explicit command is received by a predetermined operation by the user or when it is estimated that the operation is not performed for a predetermined time and the smartwatch 100 is not used for a long time. Further, the smart watch 100 returns to the operation mode when the switch 25 is pressed in the sleep mode.
Moreover, you may transfer to hibernation mode also when a battery remaining charge becomes below a threshold value.

  As the operation of the main microcomputer 11 is stopped (transition to the sleep mode), the operation of the first display unit 12 is also stopped, and the second display unit 22 displays the time under the control of the sub CPU 211 of the sub microcomputer 21.

  The operation mode is a mode in which all normal interactive functions included in the smartwatch 100 can be executed. In the operation mode, the main microcomputer 11 mainly operates, and various display operations are performed on the first display unit 12 under the control of the main CPU 111. The display content on the first display unit 12 may include a time display. In the time display in this case, the hour hand, the minute hand, and the second hand are drawn, and the time display is updated in units of one second by the movement of the second hand. In the smart watch 100, when a specific function operation is performed, it is possible to temporarily prevent the time display.

  Next, a first time display process executed by the main CPU 111 of the main microcomputer 11 of the smart watch 100 will be described with reference to FIG. The first time display process is a process for performing time display and time correction in the main microcomputer 11. In the smart watch 100, for example, when the power is turned on or when the switch 25 is pressed by the user during the sleep mode, the main CPU 111 is read from the storage unit 113 and loaded into the RAM 112 as appropriate. The first time display process is executed in cooperation with the one time display program.

  First, the main CPU 111 performs activation processing of the main microcomputer 11 (step S11). Then, the main CPU 111 sends a control signal to the sub CPU 211 to request time information, and based on the time information of the RTC 214 acquired from the sub CPU 211, the time counting unit 114 starts counting time (step S12). Then, the main CPU 111 starts the display of the first display unit 12 in the operation mode, outputs a display off notification of the second display unit 22 to the sub CPU 211, stops the display of the second display unit 22, and 2 The display unit 22 is brought into the transmissive state (step S13). In step S13, the time is displayed as shown in the display screen 12a of FIG. 1A, and thereafter the display is updated every second based on the time of the time measuring unit 114.

  Then, the main CPU 111 determines whether or not there has been an operation for shifting to the sleep mode from the user via the operation reception unit 13 or whether a predetermined time has elapsed without any operation and transition to the sleep mode (step S14). If there is no operation for shifting to the sleep mode and no operation has been performed for a predetermined time (step S14; NO), the main CPU 111 has transmitted a connection request from an external device such as a smartphone via the wireless communication controller 14. It is determined whether or not (step S15).

  The connection request in step S15 is, for example, a communication connection request that an external device performs to transmit data such as received mail to the smartwatch 100. The external device (smart phone), for example, receives accurate time information managed by the base station and corrects the time appropriately when communicating with the base station, and provides time information with higher accuracy than the smart watch 100. keeping.

  When the connection request is not transmitted from the external device (step S15; NO), the main CPU 111 refers to the current time measured by the time measuring unit 114, and whether or not the current time is the timing for time correction. Is determined (step S16). For example, the main microcomputer 11 acquires time information from an external device and corrects the time every predetermined time set in advance. The timing for correcting the time in step S16 is a timing at which a predetermined time for correcting the time has elapsed.

  If it is not time to correct the time (step S16; NO), the process proceeds to step S14. When a connection request is transmitted from the external device (step S15; YES), or when it is time to correct the time (step S16; YES), the main CPU 111 communicates with the external device via the wireless communication controller 14. A connection is established and time information is received (step S17). In step S <b> 17, when there is data such as mail transmitted from the external device, the data is received and stored in the storage unit 113, for example.

And main CPU111 correct | amends the time of the time measuring part 114 using the time information received by step S17 (step S18), and transfers to step S14.
This flow is an example. For example, even when the main microcomputer 11 is started and the time correction command is issued from the satellite radio wave reception LSI in the manual operation and the time information acquired from the satellite radio wave reception LSI is received via the sub-microcomputer 21, for example. If the connection with the external device is not connected for the threshold time or more, the time information is requested from the sub-microcomputer 21 and the time information of the sub-microcomputer 21 or the time information acquired from the satellite radio wave receiving LSI is received. Good.

  When the main CPU 111 has performed an operation for shifting to the sleep mode or when no operation has been performed for a predetermined time (step S14; YES), the main CPU 111 stops the display operation of the first display unit 12 (step S19). Then, the main CPU 111 outputs a display-on notification for starting the display operation of the second display unit 22 to the sub CPU 211 (step S20). Then, the main CPU 111 executes an operation stop process for the main microcomputer 11, stops the operation of the main microcomputer 11 including the main CPU 111 (step S21), and ends the first time display process.

  Next, the second time display process executed by the sub CPU 211 of the sub microcomputer 21 of the smartwatch 100 will be described with reference to FIG. The second time display process is a process for performing time display and time correction in the sub-microcomputer 21. In the smart watch 100, for example, triggered by the power being turned on, the sub CPU 211 performs the second time display process in cooperation with the second time display program read from the storage unit 213 and appropriately expanded in the RAM 212. Execute. In the smart watch 100 of the present embodiment, the sub-microcomputer 21 is not turned off unless the power is removed or the battery runs out after activation.

  First, the sub CPU 211 performs activation processing of the sub microcomputer 21 (step S31). Then, in response to step S20 of the first time display process, the sub CPU 211 determines whether or not a display-on notification of the second display unit 22 has been input from the main CPU 111 (step S32). When the display-on notification is input (step S32; YES), the sub CPU 211 starts displaying the time counted by the RTC 214 on the second display unit 22 (step S33). In step S33, the time is displayed as shown in the display screen 22a of FIG. 1B, and thereafter, the display is updated every second based on the time of the RTC 214.

  When the display-on notification is not input (step S32; NO) or after step S33, the sub CPU 211 receives a time information request of the RTC 214 from the main CPU 111 corresponding to step S12 of the first time display process. It is determined whether or not (step S34). When the time information request is input (step S34; YES), the sub CPU 211 reads the current time information from the RTC 214 and outputs it to the main CPU 111 corresponding to step S12 of the first time display process (step S35). .

  When the time information request has not been input (step S34; NO), or after step S35, the sub CPU 211 responds to step S13 of the first time display process with the display off notification of the second display unit 22 being the main. It is determined whether or not an input has been made from the CPU 111 (step S36). When the display off notification is input (step S36; YES), the sub CPU 211 ends the display operation of the second display unit 22 and puts the second display unit 22 into a transparent state (step S37).

  When the display off notification is not input (step S36; NO), or after step S37, the sub CPU 211 determines whether or not the switch 25 is pressed (step S38). When the switch 25 is pressed (step S38; YES), the sub CPU 211 performs an operation for starting the main microcomputer 11 (step S39).

  When the switch 25 is not pressed (step S38; NO), or after step S39, the sub CPU 211 refers to the current time measured by the RTC 214, and is in the sleep mode (display of the first display unit 12 off). And it is discriminate | determined whether the said present time is a timing which carries out time correction (step S40). For example, the sub-microcomputer 21 acquires time information from the satellite radio wave receiving module 24 and performs time correction every predetermined time (for example, one day) set in advance. The timing for correcting the time in step S40 is a timing when a predetermined time for correcting the time has elapsed.

  If it is the sleep mode and it is not time to correct the time (step S40; NO), the process proceeds to step S32. If it is the pause mode and the timing for correcting the time (step S40; YES), the sub CPU 211 activates the satellite radio wave reception module 24 (step S41). Then, the sub CPU 211 reads firmware for operating the satellite radio wave reception module 24 from the storage unit 213, outputs (transfers) the firmware to the satellite radio wave reception module 24, and expands it in the memory 241 (step S42). When the firmware is expanded in the memory 241, the satellite radio wave reception module 24 is ready to receive radio waves from the GNSS satellite, acquire time information, and generate positioning information in accordance with the firmware expanded in the memory 241.

  Then, the sub CPU 211 acquires the current time information acquired by the satellite radio wave reception module 24 from the satellite radio wave reception module 24 (step S43). Since the GNSS satellite has a clock device with high time accuracy, and the time information measured by the clock device is included in the radio wave from the GNSS satellite, the time information acquired by the satellite radio wave receiving module 24 is also the time of the RTC 214. More accurate than information.

  Then, the sub CPU 211 corrects the time of the RTC 214 using the time information acquired in step S43 (step S44). Then, the sub CPU 211 performs an operation of turning off the satellite radio wave reception module 24 (step S45), and proceeds to step S32.

  As described above, according to the present embodiment, smart watch 100 has a clock unit 114 that counts time, RTC 214 that counts time with lower time accuracy than clock unit 114, and more accurate than RTC 214 using radio waves from a positioning satellite. A satellite radio wave receiving module 24 that acquires time information with a high frequency, and a sub CPU 211 that controls the satellite radio wave receiving module 24. The sub CPU 211 acquires time information from the satellite radio wave reception module 24 and corrects the time of the RTC 214 with the acquired time information.

  For this reason, the time display unit 114 and the RTC 214 can appropriately use the time display according to the situation, and the time accuracy by the time measurement of the RTC 214 can be improved.

  The smart watch 100 includes a main microcomputer 11 and a sub-microcomputer 21 that operates with lower power consumption than the main microcomputer 11. The timer unit 114 is provided in the main microcomputer 11, and the RTC 214 is provided in the sub microcomputer 21. For this reason, in the case of the low power consumption operation in which the sub-microcomputer 21 is operating, the timing accuracy can be increased.

  Further, the main microcomputer 11 pauses based on a predetermined condition that there is a predetermined user operation or there is no operation and a predetermined time has elapsed. For this reason, in the case of the low power consumption operation in which the main microcomputer 11 is in the sleep mode and the sub-microcomputer 21 is operating, it is possible to improve the accuracy of time according to the time measured by the RTC 214.

  In addition, the time measuring unit 114 does not perform the time measuring operation when the main microcomputer 11 is in the inactive state (the inactive mode). For this reason, when the main microcomputer 11 is in the sleep mode and only the sub-microcomputer 21 is operating, the time accuracy of the time measured by the RTC 214 can be increased.

  The sub CPU 211 acquires time information from the satellite radio wave receiving module 24 when the main microcomputer 11 is in a dormant state (pause mode), and corrects the time of the RTC 214 with the acquired time information. For this reason, when the main microcomputer 11 is in the sleep mode and only the sub-microcomputer 21 is in a low power consumption operation, the RTC 214 can be time-corrected to improve the time accuracy.

  The sub CPU 211 is provided in the sub microcomputer 21. For this reason, in the case of the low power consumption operation in which the sub-microcomputer 21 is operating, the time accuracy can be increased.

  In addition, the smart watch 100 includes a first display unit 12 and a second display unit 22 that operates with lower power consumption than the first display unit 12. The time information measured by the timer unit 114 is displayed on the first display unit 12. Time information timed by the RTC 214 is displayed on the second display unit 22. For this reason, the first display unit 12 and the second display unit 22 can appropriately use the time display according to the situation and display the time on the second display unit 22 in the low power consumption operation. Time accuracy can be improved.

  The second display unit 22 is stacked on the upper part of the first display unit 12. The second display unit 22 is controlled to transmit the display content of the first display unit 12 in a state where the second display unit 22 does not display the time. For this reason, the time display can be appropriately used according to the situation by the first display unit 12 and the second display unit 22 in the apparently single display screen 4, and the accuracy of the time counted by the RTC 214 can be increased. Can be increased.

  The description in the above embodiment is an example of the timepiece device, the time correction method, and the program according to the present invention, and the present invention is not limited to this.

  For example, in the above embodiment, the time correction of the RTC 214 is performed only when the main microcomputer 11 is in the sleep mode in steps S40 to S45 of the second time display process of FIG. It is not a thing. In step S40 of the second time display process, the sub CPU 211 determines whether or not the current time is the time correction timing. In steps S41 to S45, the time correction of the RTC 214 is performed regardless of whether the main microcomputer 11 is in the operation mode or the sleep mode. It is good also as a structure which performs.

  In the above embodiment, the sub-microcomputer 21 acquires time information from the satellite radio wave reception module 24 and performs time correction every predetermined time (for example, one day) set in advance. Thus, the time information may be acquired from the satellite radio wave receiving module 24 at an arbitrary time to correct the time.

  Moreover, in the said embodiment, although it was set as the structure provided with two ideographic parts of the 1st display part 12 and the 2nd display part 22, it was set as the structure provided with one display part, and the main microcomputer 11 and the submicrocomputer 21 are one. The display units may be controlled exclusively.

  In addition, it is needless to say that the detailed configuration and detailed operation of each component of the smart watch 100 in the above embodiment can be appropriately changed without departing from the gist of the present invention.

Although the embodiments of the present invention have been described, the scope of the present invention is not limited to the above-described embodiments, but includes the scope of the invention described in the claims and the equivalents thereof.
The invention described in the scope of claims attached to the application of this application will be added below. The item numbers of the claims described in the appendix are as set forth in the claims attached to the application of this application.
[Appendix]
<Claim 1>
A first timing means for measuring time;
Second time measuring means for measuring time with lower time accuracy than the first time measuring means;
Time acquisition means for acquiring time information with higher accuracy than the second time measurement means using radio waves from a positioning satellite;
Control means for controlling the time acquisition means,
The control means acquires time information from the time acquisition means, and corrects the time of the second time measuring means with the acquired time information.
A timepiece device characterized by that.
<Claim 2>
A first control module;
A second control module that operates with lower power consumption than the first control module;
The first time measuring means is provided in the first control module,
The second time measuring means is provided in the second control module.
The timepiece device according to claim 1.
<Claim 3>
The first control module pauses based on a predetermined condition;
The timepiece device according to claim 2.
<Claim 4>
The first time measuring means does not perform a time measuring operation when the first control module is in a dormant state.
The timepiece device according to claim 3.
<Claim 5>
The said control means acquires time information from the said time acquisition means, when the said 1st control module is a dormant state, and correct | amends the time of a said 2nd time measuring means with the acquired time information. Or the timepiece apparatus of 4.
<Claim 6>
The control means is provided in the second control module.
The timepiece device according to claim 2, wherein the timepiece device is a timepiece device.
<Claim 7>
First display means;
A second display means that operates with lower power consumption than the first display means,
The time information timed by the first time measuring means is displayed on the first display means,
The time information measured by the second time measuring means is displayed on the second display means.
The timepiece device according to claim 2, wherein the timepiece device is a timepiece device.
<Claim 8>
The second display means is stacked on top of the first display means,
The second display means is controlled to transmit the display content of the first display means in a state where the second display means does not display the time.
The timepiece device according to claim 7.
<Claim 9>
A first timing means for measuring time;
A time correction method for a timepiece device comprising: second time measuring means for measuring time with lower time accuracy than the first time measuring means,
A time acquisition step of acquiring time information with higher accuracy than the second time measuring means using a time signal received from a positioning satellite;
A control step of acquiring time information by the time acquisition step, and correcting the time of the second time measuring means with the acquired time information;
A time correction method comprising:
<Claim 10>
Computer
A first timing means for measuring time,
Second time measuring means for measuring time with lower time accuracy than the first time measuring means;
Time acquisition means for acquiring time information with higher accuracy than the second time measuring means using a time signal received from a positioning satellite;
Function as control means for controlling the time acquisition means,
The control means acquires time information from the time acquisition means, and corrects the time of the second time measuring means with the acquired time information.
A program characterized by that.

DESCRIPTION OF SYMBOLS 1 Main-body part 2 Band 3 Frame 4, 12a, 22a Display screen B1 Pushbutton switch 100 Smartwatch 11 Main microcomputer 111 Main CPU
112 RAM
113 Storage Unit 114 Timekeeping Unit 12 First Display Unit 13 Operation Accepting Unit 14 Wireless Communication Controller 15 External Storage Unit 21 Sub-microcomputer 211 Sub-CPU
212 RAM
213 Storage unit 214 RTC
215 Buffer memory 22 Second display unit 23 Measuring unit 24 Satellite radio wave receiving module 241 Memory 25 Switch 31 PMIC

Claims (10)

A first timing means for measuring time;
Second time measuring means for measuring time with lower time accuracy than the first time measuring means;
Time acquisition means for acquiring time information with higher accuracy than the second time measurement means using radio waves from a positioning satellite;
Control means for controlling the time acquisition means,
The control means acquires time information from the time acquisition means, and corrects the time of the second time measuring means with the acquired time information.
A timepiece device characterized by that. A first control module;
A second control module that operates with lower power consumption than the first control module;
The first time measuring means is provided in the first control module,
The second time measuring means is provided in the second control module.
The timepiece device according to claim 1. The first control module pauses based on a predetermined condition;
The timepiece device according to claim 2. The first time measuring means does not perform a time measuring operation when the first control module is in a dormant state.
The timepiece device according to claim 3.   The said control means acquires time information from the said time acquisition means, when the said 1st control module is a dormant state, and correct | amends the time of a said 2nd time measuring means with the acquired time information. Or the timepiece apparatus of 4. The control means is provided in the second control module.
The timepiece device according to claim 2, wherein the timepiece device is a timepiece device. First display means;
A second display means that operates with lower power consumption than the first display means,
The time information timed by the first time measuring means is displayed on the first display means,
The time information measured by the second time measuring means is displayed on the second display means.
The timepiece device according to claim 2, wherein the timepiece device is a timepiece device. The second display means is stacked on top of the first display means,
The second display means is controlled to transmit the display content of the first display means in a state where the second display means does not display the time.
The timepiece device according to claim 7. A first timing means for measuring time;
A time correction method for a timepiece device comprising: second time measuring means for measuring time with lower time accuracy than the first time measuring means,
A time acquisition step of acquiring time information with higher accuracy than the second time measuring means using a time signal received from a positioning satellite;
A control step of acquiring time information by the time acquisition step, and correcting the time of the second time measuring means with the acquired time information;
A time correction method comprising: Computer
A first timing means for measuring time,
Second time measuring means for measuring time with lower time accuracy than the first time measuring means;
Time acquisition means for acquiring time information with higher accuracy than the second time measuring means using a time signal received from a positioning satellite;
Function as control means for controlling the time acquisition means,
The control means acquires time information from the time acquisition means, and corrects the time of the second time measuring means with the acquired time information.
A program characterized by that.

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