JP2011033430A - Electronic timepiece and communication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an pointer-type electronic timepiece including a radio communication means, and a communication system constituted of the electronic timepiece and an electronic device such as a cellular phone, wherein stable data communication is performed without hindering operation of the electronic timepiece. <P>SOLUTION: A communication timing control means is provided in the electronic timepiece, and a communication interval by the radio communication means and an operation period are set to have the same period, and control is performed so that communication timings (e2-t2) by the radio communication means are not overlapped on driving timings (e1-l1, s1-u1) of a pointer. When performing a heavy-load processing such as quick forwarding operation (m1-q1), the communication interval is changed by transmitting communication interval changing information to the cellular phone. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a pointer-type electronic timepiece provided with wireless communication means and a communication system including an electronic device that performs wireless communication with the pointer-type electronic timepiece.

  Conventionally, there has been proposed a communication system that performs data communication between an electronic device such as a mobile phone and a wristwatch using short-range wireless communication (for example, Bluetooth (registered trademark)) (for example, Patent Document 1). 2). By such data communication, for example, in the technique of Patent Document 1, the reception information of the mobile phone is sent to the wristwatch and output to the display unit of the wristwatch, or the command from the wristwatch is sent to perform the simple operation of the mobile phone. In the technique of Patent Document 2, various functions are realized, such as providing a microphone or an earphone unit on a wristwatch and making a call with a receiving party of a mobile phone via the wristwatch.

JP 2002-152327 A JP 2002-223475 A

  However, when the above-mentioned data communication function is added to the pointer-type electronic timepiece, the load is temporarily applied when the hand movement timing for electrically driving the hands and the communication timing for wireless communication overlap. There is a problem that the operating voltage becomes unstable when the battery is in an excessive state and uses a small battery as a power source.

  In addition, when the hand movement timing and the communication timing overlap, there is a problem that electromagnetic noise and electric noise via the power line are generated from the motor that rotationally drives the pointer, and these noises interfere with wireless communication. .

  An object of the present invention is to provide stable data without interfering with the movement of an electronic timepiece in a communication system comprising an electronic timepiece having a wireless communication means and such an electronic timepiece and a communication counterpart electronic device. The purpose is to enable communication.

In order to achieve the above object, the present invention described in claim 1
In an electronic timepiece comprising a pointer for pointing and displaying information, and a driving means for electrically driving the pointer,
Wireless communication means for intermittent wireless data communication;
Communication timing control means for controlling the communication timing of the wireless communication means;
With
The communication timing control means includes
The communication timing is controlled so that the driving timing of the pointer does not overlap with the communication timing of the wireless communication means.

The invention according to claim 2 is the electronic timepiece according to claim 1,
Communication interval transmission means for transmitting communication interval information representing a time interval of the communication timing of the data communication to a communication partner;
The communication timing control means includes
By transmitting the communication interval information to a communication partner at a timing that does not overlap with the driving timing of the pointer, control is performed so that subsequent communication timing does not overlap with the driving timing of the pointer.

The invention according to claim 3 is the electronic timepiece according to claim 2,
The driving timing of the pointer is generated in the first period,
The time interval of the communication timing represented by the communication interval information is set to the same value as the first period.

The invention according to claim 4 is the electronic timepiece according to claim 1,
The wireless communication means is configured to be able to turn on / off the power of a wireless processing unit that performs radio wave reception and transmission operations,
The wireless processing unit includes power control means for turning on the power of the wireless processing unit during the communication timing period and turning off the power of the wireless processing unit during a period outside the communication timing period.

The invention according to claim 5 is the electronic timepiece according to claim 2,
A drive processing means for performing a drive process with an electrical load is provided,
The communication timing control means includes
Before the continuous drive processing by the drive processing means is executed, the communication interval information in which the time interval of the communication timing is changed so that the execution period of the continuous drive processing and the communication timing do not overlap is transmitted to the communication Let the interval transmission means transmit,
When the continuous driving process is completed, the communication interval transmission unit causes the communication interval transmission unit to transmit the communication interval information obtained by returning the time interval of the communication timing.

The invention according to claim 6 is the electronic timepiece according to claim 5,
The continuous drive processing by the drive processing means is characterized by fast-forward driving of the pointer in order to display information related to data reception of the wireless communication means by the pointer.

The invention according to claim 7 is an electronic timepiece according to any one of claims 1 to 6,
It is an arm-mounted device.

The invention described in claim 8
An electronic device provided with wireless communication means for intermittently performing wireless data communication;
An electronic timepiece according to any one of claims 1 to 6,
A communication system characterized in that data communication is performed via wireless communication means of the electronic timepiece and wireless communication means of the electronic device at a communication timing based on control of the communication timing control means of the electronic timepiece. .

Claim 9 is the communication system according to claim 8,
The electronic device is a mobile phone;
The electronic timepiece is an arm-mounted electronic timepiece.

  According to the present invention, control is performed so that the hand movement timing of the electronic timepiece and the communication timing of data communication do not overlap. Therefore, there is an effect that stable data communication can be performed without hindering the movement of the electronic timepiece.

It is a block diagram which shows the structure of the electronic timepiece of embodiment of this invention. It is a block diagram which shows the structure of the mobile telephone which comprises the communication system of embodiment of this invention. FIG. 4 is a sequence diagram showing the hand movement and communication timing of an electronic timepiece and the communication operation between the electronic timepiece and a mobile phone. It is a flowchart which shows the procedure of the control processing performed by CPU of an electronic timepiece. It is a flowchart which shows the detail of the data transmission / reception process performed by step X4 of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of an electronic timepiece according to an embodiment of the present invention, and FIG. 2 is a block diagram showing a configuration of a mobile phone constituting the communication system according to the embodiment of the present invention.

  The communication system of this embodiment includes the electronic timepiece 40 of FIG. 1 and the mobile phone 10 of FIG.

  The electronic timepiece 40 displays the time and various information by electrically rotating the hands 62, and is not particularly limited, but is an arm-mounted type. As shown in FIG. 1, the electronic timepiece 40 includes a CPU (central processing unit) 41 (power control means and drive processing means) that performs overall control of the device, and a control program and control data executed by the CPU 41. A stored ROM (Read Only Memory) 42, a RAM (Random Access Memory) 43 that provides a working memory space for the CPU 41, an operation switch 44 that has a plurality of operation buttons and inputs commands from the outside, Serial circuit for the clock circuit 45 that measures the current time, the Bluetooth module 48 (wireless communication means and communication interval transmission means) that performs short-range wireless communication via the antenna AN41, and the data that is transmitted and received via the Bluetooth module 48 / UART (Universal Asynchronous Receiver Transmitter) 49 for data processing such as parallel conversion and The above-mentioned pointer 62 that rotates, a stepping motor 61 that rotationally drives the pointer 62 via a gear train mechanism, a drive circuit 60 that serves as a drive unit that outputs a drive current to the stepping motor 61, and a user is notified by vibration. Signals are transmitted between the vibration motor 50 and its driver 51, the light emitting diode 52 that emits light and illuminates the dial plate, its driver 53, the piezo element 54 that sounds an alarm by a buzzer sound, its driver 55, and the CPU 41 and each part. A bus 56 and the like for exchanging data are provided.

  The Bluetooth module 48 includes an RF circuit 48a (wireless processing unit) that performs reception and transmission of radio signals and demodulation and modulation processing of transmission / reception signals, and a baseband unit 48b that performs signal processing of baseband signals. Yes. Further, the Bluetooth module 48 is provided with a status register capable of controlling on / off of the power supply of the RF circuit 48a, for example, by outputting an RF power control signal from the CPU 41 and rewriting the value of the status register. The RF circuit 48a can be turned on / off.

  As shown in FIG. 2, the cellular phone 10 includes a CPU 11 that performs overall control of the device, a ROM 12 such as a nonvolatile semiconductor memory that stores a control program executed by the CPU 11 and control data, and a working memory in the CPU 41. A RAM 13 for providing space, an operation unit 14 having a plurality of operation keys, a liquid crystal display unit 15 for displaying various functions and its display driver 16, a speaker 17 and a microphone 18 for performing voice input and output during a call, A codec 19 that performs interconversion between input / output audio signals and digital data, an RF transmission / reception circuit 20 that transmits / receives radio signals to / from the base station via the antenna AN11, and a call that is input / output from the codec 19 A communication circuit 21 for modulating and demodulating audio digital data and various transmission / reception data, and an antenna AN12 Bluetooth module 22 that performs short-range wireless communication, UART 23 that performs data processing such as serial / parallel conversion on data transmitted and received via Bluetooth module 22, vibration motor 24 that notifies an incoming call by vibration, and its driver 25 and a bus 28 for exchanging signals between the CPU 11 and each unit.

  For example, key data for pairing is registered in the RAM 43 and 13 or the ROMs 42 and 12, for example, and the electronic watch 40 and the mobile phone 10 are paired with each other to establish a communication link. Mutual data communication via the Bluetooth modules 48 and 22 is possible.

  Further, in data communication via the Bluetooth modules 48 and 22, it is possible to control the transmission / reception interval of radio signals necessary for data communication by transmitting communication interval information from one side and accepting this from the other side. Yes.

  The ROM 12 of the mobile phone 10 stores the information such as the number of unacknowledged incoming voice calls and the number of unconfirmed incoming mails via the Bluetooth modules 48 and 22 when there is an incoming voice call or incoming mail. A data transmission processing program to be transmitted to the electronic timepiece 40 by the data communication is stored, and this processing program is executed by the CPU 11.

  In addition, in the ROM 42 of the electronic timepiece 40, when receiving incoming information or information on the number of unconfirmed incoming calls from the mobile phone 10, a notification hand movement process (for example, receiving a second hand as an incoming call) that drives the pointer 62 to display the information is received. Fast-forwarding to the mark position, fast-forwarding to the position indicating the number of unacknowledged incoming calls, and then returning to the time display, etc.), and driving the vibration motor 50, light-emitting diode 52, and piezo element 54 to notify the incoming call A processing processing program is stored, and this processing program is executed by the CPU 41.

  Next, data communication processing between the electronic timepiece 40 and the mobile phone 10 via the Bluetooth modules 48 and 22 will be described.

  FIG. 3 is a sequence diagram showing the hand movement and communication timing of the electronic timepiece and the communication operation between the electronic timepiece and the mobile phone. FIG. 6A shows the period during which the stepping motor 61 is driven and the pointer 62 rotates as “ON”, and the period during which the stepping motor 61 is stopped as “OFF”. FIG. The period in which the RF circuit 48a is turned on and wireless signal transmission / reception is performed is represented by "ON", and the period in which the power supply is turned off and wireless signal transmission / reception is not performed is represented by "OFF". (C) shows a communication sequence between the electronic timepiece 40 and the mobile phone 10.

  As shown in the timings e1 to l1 and s1 to u1 in FIG. 3A, the normal hand movement operation in the electronic timepiece 40 is performed in a predetermined cycle (for example, 1 second cycle, first cycle) in order to display the time. Executed. Further, as shown in timings m1 to q1 in FIG. 3A, in the electronic timepiece 40, for example, when incoming information is transmitted from the mobile phone 40, a fast-forward process of the pointer 62 is performed in order to notify it. It is done.

  As shown in the period e2 to t2 in FIG. 3B, the timing of data communication performed between the electronic timepiece 40 and the mobile phone 10 is controlled so as not to overlap with the hand movement timings e1 to u1. .

  Specifically, as shown in FIG. 3C, when establishing a communication link between the electronic timepiece 40 and the mobile phone 10, the CPU 41 of the electronic timepiece 40 does not overlap with the hand movement timings e1 and f1. Predetermined communication interval information is transmitted to the mobile phone 10. The communication interval information is set, for example, as the communication interval so that the normal operation timings e1 to l1 and the communication timing do not overlap with each other, for example, the same cycle as the normal operation timings e1 to l1 or an integer multiple of 2 or more. Information. In the example of FIG. 3, information having the same period as the period (1 second) of normal hand movement timings e1 to l1 is transmitted as the communication interval information.

  When the cellular phone 10 receives the communication interval information from the electronic timepiece 40, the CPU 11 sets the communication interval of the Bluetooth module 22 to the interval indicated by the communication interval information, and returns a reply indicating that the reception and setting has been normally performed. Do. The electronic timepiece 40 receives this response and confirms that the communication interval on the mobile phone 10 side has been set. Further, the interval indicated by the communication interval information is set in the Bluetooth module 48 by itself.

  After the communication interval is set, wireless signals are transmitted and received at the same communication interval until this setting is changed again or the communication link is disconnected. Therefore, by setting the communication interval, the hand movement timings e1 to l1 of the electronic timepiece 40 are not overlapped with the communication periods e2 to l2.

  Note that the length of the communication interval is not limited to 1 second, and even if it is set to an integral multiple of 1 second, such as 2 seconds, 5 seconds, 10 seconds, etc., the movement timing does not overlap with the communication timing. However, if the communication interval becomes long, the notification of information from the mobile phone 10 to the electronic timepiece 40 is delayed or the amount of data that can be transmitted decreases, so it is necessary to set the length appropriately.

  In the subsequent communication period f2 to l2, data and commands are transmitted from the mobile phone 10 to the electronic timepiece 40. When there is no transmission data, a command for confirming that the communication link is maintained is transmitted (communication period f2 to g2), and the electronic timepiece 40 transmits to the mobile phone 10 during the same communication period. Send response data. Thereby, it is confirmed by the mobile phone 10 that the communication link is maintained.

  For example, when there is an incoming call or the like and information to be notified from the mobile phone 10 to the electronic timepiece 40 is generated, first, information for notifying that data is transmitted from the mobile phone 10 to the electronic timepiece 40 after the next communication timing. Is sent (communication period h2). When the electronic timepiece 40 receives the advance notice information for data transmission, the electronic timepiece 40 prepares for data reception and notifies the mobile phone 10 that reception preparation is completed.

  Then, in the subsequent communication period i2 to k2, data transmission is performed from the mobile phone 10 to the electronic timepiece 40. When the data size is large, the data is transmitted to the electronic timepiece 40 divided into a plurality of times.

  When the data transmission is completed and normally received by the electronic timepiece 40, the electronic timepiece 40 transmits a reception completion notification to the mobile phone 10 in the next communication period l2. The electronic timepiece 40 calculates the time required to execute the notification movement process when executing the notification movement process based on the content of the received data, and the communication timing does not overlap the period of the notification movement process. A command for changing the subsequent communication interval is transmitted to the mobile phone 10. For example, when 2 seconds is required for the notification hand movement process, the communication interval is changed by transmitting communication interval information of 3 seconds. The communication interval change setting is executed by both the electronic timepiece 40 and the mobile phone 10 in the same manner as the communication interval setting during the first communication period e2.

  After the communication interval setting is changed and the communication period l2 has elapsed, the electronic timepiece 40 then drives the hands 62 with the hand movement pattern determined by starting the notification hand movement process (timing m1 to q1). This hand movement pattern is performed according to a pre-calculated hand movement timing, and communication with the mobile phone 10 is not performed during execution of the notification hand movement process by changing the communication interval.

  When the notification hand movement process is completed, the routine returns to the normal hand movement process. Therefore, when the next communication period r2, the command for returning the communication interval to the original setting is transmitted from the electronic timepiece 40 to the mobile phone 10 again. As a result, the same communication interval is set on both the electronic timepiece 40 and the mobile phone 10, and the original communication interval is restored. When the communication interval is returned, communication is subsequently performed between the mobile phone 10 and the electronic timepiece 40 in the communication periods s2, t2,... That do not overlap the hand movement timings s1 to u1.

  In the above example, the power supply of the RF circuit 48a of the Bluetooth module 48 of the electronic timepiece 40 is controlled to be turned on / off during the communication period and other periods. However, the power supply of the RF circuit 48a is turned on. As it is, control may be performed so that the radio wave transmission / reception processing is executed only during the communication period.

  Next, a procedure of control processing executed by the CPU 41 of the electronic timepiece 40 that realizes the above communication processing will be described according to a flowchart.

  FIG. 4 is a flowchart showing a procedure of control processing executed by the CPU 41 of the electronic timepiece 40, and FIG. 5 is a flowchart showing details of the data transmission / reception processing executed in step X4 of FIG.

  When the Bluetooth communication function of the electronic timepiece 40 is turned on, first, the CPU 41 turns on the power of the RF circuit 48a, requests connection to the mobile phone 10, and establishes a communication link with the mobile phone 10 (step X1). ). Then, communication interval information is transmitted almost simultaneously with establishment of the communication link to set the communication interval (step X2). The process of establishing the communication link and the process of setting the communication interval are executed at a timing that deviates from the hand movement timing. With these settings, subsequent communication timing and hand movement timing do not overlap. When the processing for setting the communication interval is completed, the CPU 41 turns off the power of the RF circuit 48a and performs control so that the power of the RF circuit 48a is turned on only during the set communication interval.

  Next, when proceeding to Step X3, the CPU 41 determines whether or not it is a communication timing based on the timing data of the timing circuit 45. If it is determined that the communication timing has been reached, the process proceeds to step X4 to perform data transmission / reception processing as described later, and then returns to step X3. On the other hand, if it is not the communication timing, the process proceeds to step X5 and it is determined whether or not it is the hand movement timing. As a result, if it is the hand movement timing, the CPU 41 sends a signal to the drive circuit 60 to drive the pointer 62 (step X6). On the other hand, if it is determined in step X5 that the timing is not the timing, the process returns to step X3. Then, the loop process of steps X3 to X6 is repeated.

  In step X5, it is determined that the hand movement timing is the timing at which the value of the 1-second digit of the timing circuit 45 is updated during normal time display processing. When performing the operation, it is determined that the operation timing is at the timing set for the fast-forward operation.

  When the process proceeds to the data transmission / reception process in step X4, as shown in FIG. 5, first, is there a situation in which reception data exists and data reception is performed (step X11), or transmission data exists and data transmission is in progress (step S11). X15) is determined. As a result, in the communication period (l2) for transmitting the data reception completion information of the notification information and the communication period (l2, r2) for transmitting the communication interval change information, it is determined that there is transmission data, and the process proceeds to step X15. Transition. On the other hand, other communication periods, that is, communication periods (f2 to h2, s2, t2) in which communication link confirmation and data transmission advance notice are performed, and communication periods (i2 to i2) in which notification information is transmitted from the mobile phone 10 are performed. In k2), it is determined that there is received data, and the process proceeds to step X12.

  As a result, when the process proceeds to step X12, the CPU 41 first causes the Bluetooth module 48 to receive data from the mobile phone 10, and transmits a response if necessary. Further, when notification information such as incoming call information is divided and transmitted, this divided data is received and the received data is held until all the divided data is received.

  Next, in step X13, it is determined whether notification information such as incoming call information has been received. If "NO" is determined, the process proceeds to step X17 as it is, but if "YES" is determined, a step for performing notification hand movement processing is performed. Move to X14. When the process proceeds to step X14, the CPU 41 sets a movement pattern and timing for the notification movement process to be performed thereafter, calculates an execution time of the notification movement process, and prevents subsequent communication timing from overlapping during the notification movement process. In addition, the communication interval change information is set as transmission data to the mobile phone 10. Further, in order to restore the communication interval after the notification hand movement processing, communication interval change information for restoring the communication interval is set as transmission data to the mobile phone 10 processed at the next next communication timing.

  With the setting of the hand movement timing for the notification hand movement process in step X14, the determination of the hand movement timing and the hand movement process in steps X5 and X6 in FIG. 4 are performed at an appropriate timing, and the notification hand movement process by fast-forwarding is executed. It will be. Further, by setting the communication interval change information in step X14, the communication interval change information is transmitted in the next communication timing or the data transmission / reception processing at the next next communication timing. In both cases, the communication interval is changed and set. The communication timing control means is configured by the processing of the above steps X2 and X14.

  On the other hand, if it is determined in step X15 that there is transmission data, the transmission data is transmitted to the mobile phone 10 in step X16, and if necessary, a response from the mobile phone 10 is received. Then, the process proceeds to step X17.

  The processing of steps X17 and X18 is for compensating for the movement operation when the data reception or data transmission process is prolonged and the next movement timing has elapsed. That is, it is determined in step X17 whether or not the next set operation timing has passed, and if it has passed, the operation is performed in step X18. Then, the subroutine of the data transmission / reception process is terminated and the process returns to step X3 in FIG.

  As described above, according to the electronic timepiece and the communication system of this embodiment, the Bluetooth communication function is provided, and the communication period with the mobile phone 10 using the Bluetooth communication function does not overlap with the driving timing of the hands 62. Therefore, data communication can be performed between the electronic timepiece 40 and the mobile phone 10 without hindering the hand movement.

  In addition, after establishing a connection link for communication with the mobile phone 10 at a timing that does not overlap with the driving timing of the hands 62, communication interval information is transmitted to the mobile phone 10, and thereafter, the driving timing and the communication timing of the hands 62 are changed. By setting a communication interval that does not overlap, stable data communication with the mobile phone 10 can be performed without being affected by noise from the stepping motor 61 during hand movement.

  In addition, the delay of the notification of information can be suppressed by performing the driving of the hands 62 for displaying the normal time and the Bluetooth communication of the electronic timepiece 40 and the mobile phone 10 at different timings of 1 second period. . In addition, the amount of data to be transmitted / received can be secured.

  Further, the power supply of the RF circuit 48a is turned on only while data communication with the mobile phone 10 is being performed, and the power supply of the RF circuit 48a is temporarily turned on during the period when the hand movement is being performed and the data communication is not performed. Since the power is turned off, the power consumption of the electronic timepiece 40 can be reduced.

Further, by turning off the power supply of the RF circuit 48a when driving the hands 62, it is possible to prevent an excessive load from being applied to a small battery and the like, so that both the hand movement and the data communication can be performed stably.

  In addition, the electronic timepiece 40 calculates the time required for the notification hand movement process in advance, transmits communication interval change information for moving the communication timing to the mobile phone 10, and both the mobile phone 10 and the electronic timepiece 40 transmit the communication interval. By performing the change setting, it is possible to prevent the timing of data communication from overlapping with not only the normal operation for displaying time but also the timing of fast-forward operation in the notification operation.

  Further, by changing the communication interval setting described above, the period for interrupting data communication without disconnecting the connection link is minimized, and data communication can be performed efficiently.

  Further, since the electronic timepiece 40 is of the wrist-mounted type, it is easy to obtain information such as voice incoming calls, incoming mails and the number of incoming calls from the hands 62 without paying attention to the mobile phone 10 at all times. Can be confirmed.

  Furthermore, since data communication can be performed without hindering the movement of the hand while suppressing the load on the battery, the arm-type pointer-type electronic timepiece 40 using a small battery as a power source is particularly useful.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, although the Bluetooth module is exemplified as the wireless communication means in the above embodiment, for example, various power-saving short-range wireless communications such as Wibree (registered trademark) and ZigBee (registered trademark) can be applied, In addition, a proprietary short-range wireless communication or other wireless communication other than the short-range wireless communication can be applied.

  In the above embodiment, the electronic timepiece 40 has been described as an arm-mounted type, but the present invention can be similarly applied to various types of electronic timepieces such as a pocket watch type electronic timepiece. Further, although the mobile phone 10 is illustrated as the electronic device of the communication partner, for example, other electronic devices such as a PDA and a GPS receiver can be applied.

  In the above embodiment, the communication interval change information is transmitted when the pointer 62 is fast-forwarded so that the communication timing does not overlap during the fast-forwarding operation. For example, the vibration motor 50, When executing the process of driving the light emitting diode 52 and the piezo element 54, it is also possible to transmit communication interval change information and control the communication timing not to overlap during these drive processes. In addition, the details shown in the embodiments can be appropriately changed without departing from the spirit of the invention.

10 Mobile phone 22 Bluetooth module 40 Electronic watch 41 CPU
44 switch 45 timer circuit 48 Bluetooth module 48a RF circuit 50 vibration motor 52 light emitting diode 54 piezo element 60 drive circuit 61 stepping motor 62 pointer

Claims (9)

In an electronic timepiece comprising a pointer for pointing and displaying information, and a driving means for electrically driving the pointer,
Wireless communication means for intermittent wireless data communication;
Communication timing control means for controlling the communication timing of the wireless communication means;
With
The communication timing control means includes
An electronic timepiece which controls the communication timing so that the driving timing of the hands does not overlap with the communication timing of the wireless communication means. Communication interval transmission means for transmitting communication interval information representing a time interval of the communication timing of the data communication to a communication partner;
The communication timing control means includes
2. The control according to claim 1, wherein the communication interval information is transmitted to a communication partner at a timing that does not overlap with the driving timing of the pointer, so that subsequent communication timing is controlled not to overlap with the driving timing of the pointer. Electronic clock. The driving timing of the pointer is generated in the first period,
3. The electronic timepiece according to claim 2, wherein a time interval of communication timing represented by the communication interval information is set to the same value as the first period. The wireless communication means is configured to be able to turn on / off the power of a wireless processing unit that performs radio wave reception and transmission operations,
2. The power supply control means for turning on the power of the wireless processing unit during the communication timing period and turning off the power of the wireless processing unit during a period outside the communication timing period. Electronic watch. A drive processing means for performing a drive process with an electrical load is provided,
The communication timing control means includes
Before the continuous drive processing by the drive processing means is executed, the communication interval information in which the time interval of the communication timing is changed so that the execution period of the continuous drive processing and the communication timing do not overlap is transmitted to the communication Let the interval transmission means transmit,
3. The communication interval transmission unit transmits the communication interval information obtained by returning the time interval of the communication timing to the original by the communication interval transmission unit when the continuous driving process is completed. Electronic clock.   6. The electronic timepiece according to claim 5, wherein the continuous driving processing by the driving processing means is fast-forward driving of the hands to display information related to data reception of the wireless communication means by the hands.   The electronic timepiece according to claim 1, wherein the electronic timepiece is an arm-mounted device. An electronic device provided with wireless communication means for intermittently performing wireless data communication;
An electronic timepiece according to any one of claims 1 to 6,
A communication system, wherein data communication is performed via wireless communication means of the electronic timepiece and wireless communication means of the electronic device at a communication timing based on control of the communication timing control means of the electronic timepiece. The electronic device is a mobile phone;
The communication system according to claim 8, wherein the electronic timepiece is an arm-mounted electronic timepiece.

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