JP6969127B2 - Clock device, time correction method and program - Google Patents

Description

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

Conventionally, there is a clock device having a display unit and capable of displaying a time (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2006-101505

However, in the conventional technique, when displaying the time, there is a demand to appropriately use the time display according to the situation and improve the accuracy of the time obtained at the time of each time display.

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

In order to solve the above problems, the clock device of the present invention includes a first timekeeping means for measuring time, a second timekeeping means for measuring time with a lower time accuracy than the first timekeeping means, and a first control module. A second control module that operates with lower power consumption than the first control module, and a time acquisition means that acquires time information with higher accuracy than the second timekeeping means by using radio waves from a positioning satellite. and a control means for controlling the time acquisition unit, the first counting means is provided in the interior of the first control module, the second time measuring means, Re et provided inside of the second control module The control means acquires time information from the time acquisition means, and corrects the time of the second timekeeping means with the acquired time information .

According to the present invention, the time display can be appropriately used according to the situation, and the accuracy of the time obtained at the time of each time display can be improved.

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

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. The present invention is not limited to the illustrated examples.

An embodiment according to the present invention will be described with reference to FIGS. 1 to 4. First, the smart watch 100 as the clock device of the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1A is a front view of the smart watch 100 of the present embodiment. FIG. 1B is a front view of the smart watch 100 showing the display screens of the first display unit 12 and the second display unit 22.

As shown in FIG. 1 (a), the smart watch 100 is an arm-worn information processing device in which the main body 1 can be worn on the user's arm by 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 internally retains functional configurations related to various operations described later. When the push button switch B1 is pressed, it returns from the hibernation mode described later to the operation mode.

Two display units are laminated on the display screen 4. As shown in FIG. 1 (b), 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 the display is made by the first display unit 12 and the display screen 22a of the second display unit 22 is transparent to the display by the first display unit 12.
A touch sensor (touch panel) (not shown) is provided above the second display unit 22 to accept user operations. A push button switch B1 is provided on the side surface of the frame 3 so that the user's operation can be received together with the touch sensor.

The first display unit 12 has a color liquid crystal display screen based on a dot matrix, and switches and / or performs various displays related to various functions according to a user's input operation, various program operations, and the like.
The second display unit 22 has a display screen capable of displaying the time by simple display with lower power consumption than the first display unit 12, and performs, for example, a black-and-white liquid crystal display by a segment method. Alternatively, a memory-in-pixel liquid crystal display (MIP liquid crystal display) or a PN liquid crystal display (Polymer Network) may be used for the display screen 22a of the second display unit 22. Further, the display screen 22a of the second display unit 22 can transmit the display content of the first display unit 12 upward by applying a predetermined voltage without displaying at all.

FIG. 2 is a block diagram showing a functional configuration of the smart watch 100.
The smartwatch 100 includes a main microcomputer 11 as a first control module, a first display unit 12 as a first display means, an operation reception 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 means, a measurement unit 23, a satellite radio wave receiving module 24 as a time acquisition means, 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 timekeeping unit 114 as a first timekeeping means, and the like. .. The main microcomputer 11 receives power from a power source via the PMIC 31, and controls the operation of each unit such as the first display unit 12, the operation reception unit 13, the wireless communication controller 14, and the external storage unit 15.

The main CPU 111 performs various arithmetic processes and collectively controls the operation of the smart watch 100 in the normal operating state. Further, the main CPU 111 acquires the measurement data of the satellite radio wave receiving 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 for the main CPU 111 and stores temporary data.

The storage unit 113 is a non-volatile memory such as a flash memory for storing 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 the first time display process described later, an application that uses the positioning result (positioning information) by the satellite radio wave receiving module 24, and the like. Various data etc. are included.

The timekeeping unit 114 counts the current date and time (time information) based on the control of the main CPU 111. The timekeeping unit 114 has a counter or the like, and counts the date and time with higher accuracy than the RTC 214 described later according to the operating clock frequency of the main microcomputer 11.

The operation of the main CPU 111 may be temporarily suspended when the operation is not necessary. For example, when a predetermined command is received by the operation receiving unit 13 or when a predetermined time elapses without any operation, the entire operation of the main microcomputer 11 is stopped and the mode is changed to the hibernation mode in which the sub-microcomputer 21 operates. It shall be. In the smart watch 100, two modes, a hibernation mode and an operation mode, are prepared as operation modes. The mode in which the main microcomputer 11 and the sub-microcomputer 21 operate is set as the operation mode. The hibernation mode and the operation mode will be described more specifically later.

The above-mentioned first display unit 12 is mainly displayed by the control operation of the main microcomputer 11 (main CPU 111). Here, when the operation of the main microcomputer 11 is suspended, the display is also turned off, but the sub-microcomputer 21 It may be possible to make a limited display by the control operation by (sub CPU 211).

The operation receiving unit 13 includes the above-mentioned touch sensor, receives an input operation from the outside (that is, a user), converts the operation content into an electric signal, and outputs the operation content to the main CPU 111. If the main CPU 111 is inactive (in the standby state) when there is an input operation to the touch sensor, this electric signal becomes an operation restart signal and the operation of the main CPU 111 is restarted.

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)) and wireless LAN (IEEE802.11). The main microcomputer 11 (main CPU 111) can acquire necessary information, programs, and updated data thereof from the outside via the wireless communication controller 14. Examples of the external device to be connected to the communication 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 non-volatile large-capacity storage, and stores map data and the like for 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 detachable small portable storage medium such as a flash memory attached.

The sub-microcomputer 21 includes a sub CPU 211 as a control means, a RAM 212, a storage unit 213, an RTC 214 (real-time clock) as a second timekeeping means, a buffer memory 215, and the like. The sub-microcomputer 21 operates by receiving power from a power source via the PMIC 31. Further, the sub-microcomputer 21 controls the operation of the second display unit 22, the measurement unit 23, and the satellite radio wave receiving module 24, and the exchange of data with the main microcomputer 11. The sub-microcomputer 21 consumes power (during normal operation and at maximum; it can be based mainly on the TDP (thermal design power) of the CPU and the effect of the capacity and number of RAMs). Is a sub control unit that is smaller than the power consumption of the main microcomputer 11 (at the time of normal operation and at the maximum, respectively) and for performing continuously performed operations with relatively small power consumption.

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, etc.) than the main CPU 111, and may have a lower capacity than the main CPU 111. In principle, the sub CPU 211 maintains its minimum operation as long as the power supply from the PMIC 31 is not insufficient. In addition, when the minimum operation is performed periodically at a predetermined interval, the operation other than the operation period at the predetermined interval may be suspended (the standby state may be set).
The RAM 212 provides a working memory space to the sub CPU 211 and stores temporary data. The RAM 212 holds the stored data as long as the power supply from the PMIC 31 is normally performed even when the sub CPU 211 operates intermittently as described above.

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

The RTC 214 is a normal one that performs timekeeping operation of date and time (time information), and as described above, the accuracy is lower than the timekeeping operation by the timekeeping unit 114 of the main microcomputer 11, but the timekeeping operation is higher than that of the timekeeping unit 114. The power consumption is small, and 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 the time during the display operation. When a MIP liquid crystal display is used for the display screen, the second display unit 22 can reduce the update frequency of the display content by controlling the sub CPU 211.

The measuring unit 23 has a sensor for measuring a physical quantity indicating a motion state of the smart watch 100. Here, the measurement unit 23 includes an acceleration sensor, and may also include an orientation sensor (geomagnetic field sensor), a barometric pressure sensor (used as an altitude sensor), and the like. Further, the measurement unit 23 detects a predetermined posture of the smartwatch 100, here, an inclination sensor for detecting the inclination state of the smartwatch 100 when the user raises his / her arm in front of the eyes so that the display screen of the smartwatch 100 can be easily seen. May have.

The satellite radio reception module 24 captures, receives and demolishes radio waves from positioning satellites, here, at least radio waves from positioning satellites (GNSS satellites) related to GNSS (Global Navigation Satellite System), and obtains time and positions. It is a module (satellite radio wave receiving LSI) capable of performing. The radio waves from the positioning satellite include the time information measured by the positioning satellite. The satellite radio wave receiving module 24 has an antenna (not shown) and receives 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 CPU211). Receives and reverse-spectrum spreads to acquire and decode navigation messages. Further, the satellite radio wave receiving module 24 performs a positioning calculation based on the acquisition and decoding results of the navigation message. The obtained date and time and the current position are output in a predetermined format.
The satellite radio wave receiving module 24 may be configured to receive radio waves from a positioning satellite of a method other than the GNSS method to acquire time and perform positioning.

The satellite radio wave receiving 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), and at the time of operation, from time information acquisition, control program (firmware) necessary for positioning operation, navigation message format information of each positioning satellite, each positioning satellite, etc. The acquired orbital information (Ephemeris, Armanac) is stored. The memory 241 can be maintained in operation even when the operation of the reception operation unit of the satellite radio wave receiving module 24 is stopped, but when the operation of the memory 241 is stopped and restarted, the memory 241 can be maintained in operation. At least a part (firmware, etc.) of these is reacquired from the storage unit 213 of the sub-microcomputer 21. The satellite radio wave receiving module 24 can capture radio waves from a number of positioning satellites required for positioning, acquire ephemeris for each, and then continuously perform positioning calculation to obtain the current position. The calculation interval of the current position in this case is not particularly limited, but here it 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 hibernate mode. The switch 25 may be provided exclusively or may be used in combination with the push button switch B1.

The PMIC 31 controls the power supply from the power supply to the main microcomputer 11 and the sub microcomputer 21. The PMIC 31 is provided with, for example, a switch for switching whether or not to output power to the main microcomputer 11 and the sub microcomputer 21, and a DC / DC converter for adjusting the output voltage, etc., and provides appropriate power when the main microcomputer 11 and the sub microcomputer 21 are operated. 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 may be prepared instead of the PMIC 31.

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 hibernation mode and an operation mode will be described as operation modes of the smart watch 100. As described above, the operation of the main microcomputer 11 can be switched between the operation state (operation mode) and the hibernation state (pause mode) by switching the operation presence / absence of the main CPU 111. In the hibernation mode, the display by the first display unit 12 is also turned off when the operation of the main CPU 111 is stopped. Here, in the hibernation mode, it is assumed that 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 hibernate 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 restarted. Alternatively, in the hibernate mode, when the operation of the main CPU 111 is stopped, the stored contents of the RAM 112 may be saved in the storage unit 113 and the operation may be stopped (sleep state) so as to be recoverable. Even if the hibernate mode is continued, the main microcomputer 11 temporarily returns to the operating state at a predetermined interval (maintenance operation interval), for example, once every 10 minutes, and performs a predetermined process (maintenance operation). May be good.

The transition to the hibernate mode is made when an explicit command is received by a predetermined operation by the user, or when it is presumed that the smart watch 100 will not be used for a long time without the operation for a predetermined time. Further, in the smart watch 100, when the switch 25 is pressed in the hibernation mode, the smart watch 100 returns to the operation mode.
Further, the mode may be changed to the hibernation mode even when the remaining battery level becomes equal to or less than the threshold value.

The operation of the first display unit 12 is also suspended when the operation of the main microcomputer 11 is stopped (transition to the hibernation mode), 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 the usual interactive functions of the smart watch 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 moving the second hand. Further, in the smart watch 100, it is possible to temporarily disable the time display when performing a specific function operation.

Next, with reference to FIG. 3, the first time display process executed by the main CPU 111 of the main microcomputer 11 of the smart watch 100 will be described. The first time display process is a process for displaying the time and correcting the time 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 hibernation mode, the main CPU 111 is read from the storage unit 113 and appropriately expanded into the RAM 112. 1 The first time display process is executed in cooperation with the time display program.

First, the main CPU 111 starts the main microcomputer 11 (step S11). Then, the main CPU 111 sends a control signal to the sub CPU 211 to request the time information, and the time counting unit 114 starts counting the time based on the time information of the RTC 214 acquired from the sub CPU 211 (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, and stops the display of the second display unit 22. 2 Make the display unit 22 transparent (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 timekeeping unit 114.

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

The connection request in step S15 is, for example, a communication connection request made by an external device for transmitting data such as received mail to the smart watch 100. For example, the external device (smartphone) receives accurate time information managed by the base station and corrects the time appropriately when connecting to the base station for communication, and obtains time information with higher accuracy than the smartwatch 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. (Step S16). For example, in the main microcomputer 11, time information is acquired from an external device and time correction is performed at predetermined time intervals set in advance. The timing for time correction in step S16 is the timing at which the predetermined time for time correction has elapsed.

If it is not the timing for time correction (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. Establish a connection and receive time information (step S17). In step S17, when there is data such as an e-mail transmitted from an external device, the data is received and stored in, for example, the storage unit 113.

Then, the main CPU 111 corrects the time of the time measuring unit 114 by using the time information received in step S17 (step S18), and proceeds to step S14.
This flow is an example. For example, even if the time correction command from the satellite radio wave receiving LSI is issued and the time information acquired from the satellite radio wave receiving LSI is received via the sub-microcomputer 21 by manual operation after starting the main microcomputer 11. If the connection with the external device is not connected for the threshold time or more, the time information may be 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 may be received. good.

When the main CPU 111 has undergone a transition operation to the hibernation mode or has not been operated and a predetermined time has elapsed (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 the operation stop process of 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, with reference to FIG. 4, the second time display process executed by the sub CPU 211 of the sub microcomputer 21 of the smart watch 100 will be described. The second time display process is a process for displaying the time and correcting the time 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 processing in cooperation with the second time display program read from the storage unit 213 and appropriately expanded in the RAM 212. To execute. In the smart watch 100 of the present embodiment, the sub-microcomputer 21 is not turned off unless the power supply is removed or the battery runs out after the start-up.

First, the sub CPU 211 starts the sub microcomputer 21 (step S31). Then, the sub CPU 211 determines whether or not the display-on notification of the second display unit 22 is input from the main CPU 111 in response to step S20 of the first time display process (step S32). When the display on notification is input (step S32; YES), the sub CPU 211 starts displaying the time clocked 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 RTC214.

When the display on notification is not input (step S32; NO), or after step S33, the sub CPU 211 receives the time information request of the RTC 214 from the main CPU 111 in accordance with step S12 of the first time display process. It is determined whether or not it is present (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 in response to step S12 of the first time display process (step S35). ..

When the time information request is not input (step S34; NO), or after step S35, the sub CPU 211 mainly notifies the display off of the second display unit 22 in response to step S13 of the first time display process. It is determined whether or not the information has been input 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 in 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 operates to activate 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 pause mode (display off of the first display unit 12). Moreover, it is determined whether or not the current time is the timing for time correction (step S40). For example, the sub-microcomputer 21 acquires time information from the satellite radio wave receiving module 24 and corrects the time every predetermined time (for example, one day) set in advance. The timing for time correction in step S40 is the timing at which the predetermined time for time correction has elapsed.

If the mode is in the pause mode and the timing is not the time correction (step S40; NO), the process proceeds to step S32. In the case of the hibernation mode and the timing for time correction (step S40; YES), the sub CPU 211 activates the satellite radio wave receiving module 24 (step S41). Then, the sub CPU 211 reads the firmware for operating the satellite radio wave receiving module 24 from the storage unit 213, outputs (transfers) it to the satellite radio wave receiving module 24, and expands it in the memory 241 (step S42). When the firmware is expanded in the memory 241, the satellite radio wave receiving module 24 is in a state capable of receiving radio waves from the GNSS satellite, acquiring time information, and generating positioning information according to the firmware expanded in the memory 241.

Then, the sub CPU 211 acquires the current time information acquired by the satellite radio wave receiving module 24 from the satellite radio wave receiving 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 RTC214. More accurate than information.

Then, the sub CPU 211 corrects the time of the RTC 214 by 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 receiving module 24 (step S45), and proceeds to step S32.

As described above, according to the present embodiment, the smart watch 100 is more accurate than the RTC 214 by using the time measuring unit 114 for measuring the time, the RTC 214 for measuring the time with a lower time accuracy than the time measuring unit 114, and the radio wave from the positioning satellite. It includes a satellite radio wave receiving module 24 that acquires high time information, and a sub CPU 211 that controls the satellite radio wave receiving module 24. The sub CPU 211 acquires the time information from the satellite radio wave receiving module 24, and corrects the time of the RTC 214 with the acquired time information.

Therefore, the time display can be appropriately used according to the situation by the time measuring unit 114 and the RTC 214, and the accuracy of the time measured by the RTC 214 can be improved.

Further, 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 timing unit 114 is provided inside the main microcomputer 11, and the RTC 214 is provided inside the sub-microcomputer 21. Therefore, in the case of low power consumption operation in which the sub-microcomputer 21 is operating, the accuracy of timekeeping can be improved.

Further, the main microcomputer 11 is suspended based on a predetermined condition that a predetermined user operation is performed or no operation is performed and a predetermined time has elapsed. Therefore, in the case of low power consumption operation in which the main microcomputer 11 is in the hibernate mode and the sub-microcomputer 21 is operating, the accuracy of the time measured by the RTC 214 can be improved.

Further, the timekeeping unit 114 does not perform the timekeeping operation when the main microcomputer 11 is in the hibernation state (pause mode). Therefore, in the case of low power consumption operation in which the main microcomputer 11 is in the hibernate mode and only the sub-microcomputer 21 is operating, the accuracy of the time measured by the RTC 214 can be improved.

Further, when the main microcomputer 11 is in the hibernation state (hibernation mode), the sub CPU 211 acquires the time information from the satellite radio wave receiving module 24 and corrects the time of the RTC 214 with the acquired time information. Therefore, in the case of low power consumption operation in which the main microcomputer 11 is in the hibernate mode and only the sub-microcomputer 21 is operating, the RTC 214 can be time-corrected to improve the time accuracy.

Further, the sub CPU 211 is provided inside the sub microcomputer 21. Therefore, the accuracy of the time can be improved in the case of low power consumption operation in which the sub-microcomputer 21 is operating.

Further, 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 time measuring unit 114 is displayed on the first display unit 12. The time information measured by the RTC 214 is displayed on the second display unit 22. Therefore, the time display can be appropriately used by the first display unit 12 and the second display unit 22 according to the situation, and the time is displayed on the second display unit 22 in the case of low power consumption operation. The time accuracy can be improved.

Further, the second display unit 22 is laminated on the upper part of the first display unit 12. The second display unit 22 is controlled so that the display content of the first display unit 12 is transparent when the time is not displayed on the second display unit 22. Therefore, 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 measured by the RTC 214 can be determined. Can be enhanced.

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

For example, in the above embodiment, in steps S40 to S45 of the second time display process of FIG. 4, the RTC214 is time-corrected only when the main microcomputer 11 is in the hibernate mode, but the present invention is limited to this. It's 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, and in steps S41 to S45, the main microcomputer 11 corrects the time of the RTC 214 regardless of the operation mode and the hibernation mode. It may be configured to perform the above.

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

Further, in the above embodiment, the configuration includes two ideographic units, the first display unit 12 and the second display unit 22, but the configuration includes one display unit, and the main microcomputer 11 and the sub microcomputer 21 are one. The display units may be exclusively controlled.

Further, it goes without saying 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 spirit 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 equivalent scope thereof.
The inventions described in the claims originally attached to the application of this application are described below. The claims described in the appendix are the scope of the claims originally attached to the application for this application.
[Additional Notes]
<Claim 1>
The first timekeeping means to time the time,
The second timekeeping means, which measures the time with lower time accuracy than the first timekeeping means,
A time acquisition means that acquires time information with higher accuracy than the second timekeeping means using radio waves from a positioning satellite, and a time acquisition means.
A control means for controlling the time acquisition means is provided.
The control means acquires time information from the time acquisition means, and corrects the time of the second timekeeping means with the acquired time information.
A clock device characterized by that.
<Claim 2>
The first control module and
A second control module that operates with lower power consumption than the first control module is provided.
The first timekeeping means is provided inside the first control module.
The second timekeeping means is provided inside the second control module.
The clock device according to claim 1.
<Claim 3>
The first control module pauses based on predetermined conditions.
The clock device according to claim 2.
<Claim 4>
The first timekeeping means does not perform a timekeeping operation when the first control module is in a dormant state.
The clock device according to claim 3.
<Claim 5>
3. The control means is characterized in that, when the first control module is in a hibernation state, time information is acquired from the time acquisition means, and the time of the second timekeeping means is corrected by the acquired time information. Or the clock device according to 4.
<Claim 6>
The control means is provided inside the second control module.
The clock device according to any one of claims 2 to 5.
<Claim 7>
The first display means and
A second display means that operates with lower power consumption than the first display means is provided.
The time information measured by the first timekeeping means is displayed on the first display means.
The time information measured by the second timekeeping means is displayed on the second display means.
The clock device according to any one of claims 2 to 6, wherein the clock device is characterized by the above.
<Claim 8>
The second display means is laminated on the upper part of the first display means.
The second display means is controlled so as to transmit the display contents of the first display means when the time is not displayed by the second display means.
The clock device according to claim 7.
<Claim 9>
The first timekeeping means to time the time,
A time correction method for a timepiece device including a second timekeeping means for measuring time with a lower time accuracy than the first timekeeping means.
A time acquisition process for acquiring time information with higher accuracy than the second timekeeping means using a time signal received from a positioning satellite, and a time acquisition process.
A control step of acquiring time information by the time acquisition process and correcting the time of the second timekeeping means with the acquired time information.
A time correction method characterized by including.
<Claim 10>
Computer,
The first timekeeping means to time the time,
The second timekeeping means, which measures the time with a lower time accuracy than the first timekeeping means,
A time acquisition means that acquires time information with higher accuracy than the second timekeeping means by using a time signal received from a positioning satellite.
To function as a 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 timekeeping means with the acquired time information.
A program characterized by that.

1 Main unit 2 Band 3 Frame 4, 12a, 22a Display screen B1 Push button switch 100 Smart watch 11 Main microcomputer 111 Main CPU
112 RAM
113 Storage unit 114 Timekeeping unit 12 First display unit 13 Operation reception 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 2nd display unit 23 Measurement unit 24 Satellite radio wave receiving module 241 Memory 25 Switch 31 PMIC

Claims (9)

The first timekeeping means to time the time,
The second timekeeping means, which measures the time with lower time accuracy than the first timekeeping means,
The first control module and
A second control module that operates with lower power consumption than the first control module,
A time acquisition means that acquires time information with higher accuracy than the second timekeeping means using radio waves from a positioning satellite, and a time acquisition means.
A control means for controlling the time acquisition means and
Equipped with
The first timekeeping means is provided inside the first control module.
It said second timing means includes et is inside the second control module,
The control means acquires time information from the time acquisition means, and corrects the time of the second timekeeping means with the acquired time information.
A clock device characterized by that. The first control module pauses based on predetermined conditions.
The clock device according to claim 1. The first timekeeping means does not perform a timekeeping operation when the first control module is in a dormant state.
The clock device according to claim 1 or 2. Wherein if the first control module is dormant, claim 2, characterized in that acquires time information from said time obtaining means corrects the time of the second time measuring means by the acquired time information Or the clock device according to 3. The control means is provided inside the second control module.
The clock device according to any one of claims 1 to 4. The first display means and
A second display means that operates with lower power consumption than the first display means is provided.
The time information measured by the first timekeeping means is displayed on the first display means.
The time information measured by the second timekeeping means is displayed on the second display means.
The clock device according to any one of claims 1 to 5. The second display means is laminated on the upper part of the first display means.
The second display means is controlled so as to transmit the display contents of the first display means when the time is not displayed by the second display means.
The clock device according to claim 6. The first timekeeping means to time the time,
The second timekeeping means, which measures the time with lower time accuracy than the first timekeeping means,
The first control module and
A second control module that operates with lower power consumption than the first control module,
It is a time correction method of a clock device equipped with
A time acquisition process for acquiring time information with higher accuracy than the second timekeeping means using a time signal received from a positioning satellite, and a time acquisition process.
A control step of acquiring time information by the time acquisition process and correcting the time of the second timekeeping means with the acquired time information.
A pause step of suspending the first control module based on a predetermined condition,
A time correction method characterized by including. The first control module and
A second control module that operates with lower power consumption than the first control module,
The computer of the clock device, which is equipped with
The first timekeeping means to time the time,
The second timekeeping means, which measures the time with a lower time accuracy than the first timekeeping means,
A time acquisition means that acquires time information with higher accuracy than the second timekeeping means by using a time signal received from a positioning satellite.
To function as a control means for controlling the time acquisition means,
The control means acquires time information from the time acquisition means, corrects the time of the second timekeeping means with the acquired time information, and corrects the time.
The first control module is suspended based on a predetermined condition.
A program characterized by that.

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