JP4412651B2 - Radio correction clock - Google Patents

Description

  The present invention relates to a radio-controlled timepiece that corrects time based on a time code transmitted by radio waves.

Generally, a radio-controlled timepiece is configured to automatically receive a standard time radio wave at a predetermined time and correct the time based on a time code included in the standard time radio wave. However, depending on the environment of the place where the radio-controlled watch is installed, it may be impossible or difficult to receive such a time code. To maintain an accurate time, it is necessary to receive the time code more reliably. Configuration is required. Patent Documents 1 and 5 describe a radio-controlled timepiece configured to more reliably receive a time code.
JP-A-5-333170 Japanese Unexamined Patent Publication No. 8-25160 JP-A-10-90443 JP 2000-329873 A JP 2002-108496 A

  Now, the radio-controlled timepiece is required to display an extremely strict time, and it is necessary to provide a configuration for further improving the reliability of the reception of the time code while providing convenience in use. An object of the present invention is to provide a radio-controlled timepiece capable of rationally receiving a time code and correcting the time.

The invention described in claim 1 of the present application is a radio-controlled timepiece that corrects time based on a time code transmitted by radio waves, and includes a main body clock and a slave unit that is detachably attached to the main body clock, The main body clock is provided with first control means for controlling the main body clock, first time measuring means for measuring time, and time display means for displaying the time measured by the first time measuring means. Includes a second control unit for controlling the slave unit, a second timing unit for measuring time, a receiving unit for receiving the time code, and a reception success display unit for displaying that the reception of the time code has been successful. The main body timepiece or the slave unit is provided with data coincidence display means for displaying that the timekeeping data of the first timekeeping means and the second timekeeping means coincide with each other, Timing data of timing means When a predetermined reception time is reached, the first control means transmits a reception command signal to the second control means, and the reception means receives the time code in response to the reception command signal, and from the main body clock When the slave unit is removed, a trigger signal is input to the second control unit, and the reception unit receives the time code in response to the trigger signal, and the slave unit receives the time received by the reception unit. Correct the time data of the second time counting means based on the code, and the body clock, which corrects the time data of the first time counting means based on the time data of the second time measuring means, said body When the slave unit attached to the watch has been successfully received, or when the slave unit that has been successfully received is subsequently attached to the main unit watch, the second control unit sends the first control unit to the first control unit. 2 Timekeeping data of the timekeeping means is transmitted, and the first control means corrects the timekeeping data of the first timekeeping means based on the timekeeping data of the second timekeeping means transmitted from the second control means, When the timing data of the timing unit is corrected, the first control unit transmits the timing data of the first timing unit to the second control unit, and the second control unit transmits the first timing unit and the second timing unit. It is a radio-controlled timepiece configured to check whether the timekeeping data of the timekeeping means match and, if they match, operate the data match display means .

  According to the present invention, it is possible to obtain a radio-controlled timepiece that can reasonably perform time code reception and time correction.

  Embodiments of the present invention will be described below in detail with reference to the drawings. The timepiece shown in FIG. 1 is a radio wave correction clock 1 that corrects the time based on a time code transmitted by radio waves. The radio-controlled timepiece 1 includes a main body clock 200 provided with a time display means 210 and a handset 300 that is detachably attached to the main body clock 200. The time display means 210 in the example is for driving the hands 212 on the dial 211 provided in front of the main body clock 200. The handset 300 of this example is of a plug type that is inserted into a jack portion 201 provided at a main point of the main body clock 200 and attached. Terminal groups 202 and 301 connected to each other are provided at important points of the slave unit 300 and the jack unit 201, respectively. In FIG. 2, 310 is a reception success display means, and 320 is a data match display means.

  The subunit | mobile_unit 300 is a unit which receives a standard time electromagnetic wave. For example, as shown in FIG. 3, when the main body clock 200 is installed in a place A where radio wave reception is impossible or difficult, the handset 300 is removed and taken out of the place A to the standard time. Receive radio waves. When the slave unit 300 is attached to the main body clock 200 after receiving the standard time radio wave, the main unit clock 200 corrects the time based on the time code of the standard time radio wave received by the slave unit 300.

  In FIG. 4, the circuit diagram of the main body clock 200 and the subunit | mobile_unit 300 is shown. The main body clock 200 is provided with first control means 221 for controlling the main body clock 200, first time measuring means 222 for measuring time, and time display means 210 for displaying the time measured by the first time measuring means 222. It has been. The first control means 221 and the first time measuring means 222 are constituted by a first microcomputer 220 storing a required program. Then, the first control means 221 controls the motor 213 that drives the hands 212 so that the time display means 210 displays the time measured by the first time measurement means 222.

  The slave unit 300 includes a second control unit 341 for controlling the slave unit 300, a second timing unit 342 for timing the time, a reception unit 330 for receiving the time code, and that the time code has been successfully received. A reception success display means 310 for displaying, and a data coincidence display means 320 for displaying that the timing data of the first timing means 222 and the second timing means 342 match each other are provided. The 2nd control means 341 and the 2nd time measuring means 342 are comprised by the 2nd microcomputer 340 which stored the required program. The receiving means 330 is an antenna 331 and an IC 332 for receiving a predetermined standard time radio wave. The reception success display means 310 and the data coincidence display means 320 are each configured by an LED, and when reception is successful and when the time measurement data of the respective time measurement means match, they are lit at any time.

  In the case of this example, handset 300 corrects the time data of second time measuring means 342 based on the time code received by receiving means 330, and main unit clock 200 is based on the time data of second time measuring means 342. The time data of the first time measuring means 222 is corrected. The radio-controlled timepiece 1 checks whether the time data of the first time measuring means 222 and the second time measuring means 342 match when the time data of the first time measuring means 222 is corrected.

  The power source 230 of the main body clock 200 is a commercial power source, a primary battery, or a secondary battery, and the power source 350 of the handset 300 is a primary battery or a secondary battery. When handset 300 is attached to main unit clock 200, that is, when both terminal groups 202 and 301 are connected, power is supplied to main unit 300 from power source 230 of main unit clock 200, and subunit 300 The power supply 350 is not used. When the power source 350 of the slave unit 300 is a secondary battery, the cordless handset 300 may be configured to be charged by the power of the power source 230 of the main unit clock 200 while the slave unit 300 is attached to the main unit clock 200. Good.

  The radio-controlled timepiece 1 of this example is configured such that when the handset 300 is removed from the main body clock 200, a trigger signal is input to the second control means, and the receiving means 330 receives the time code in response to the trigger signal. Yes. The trigger signal is generated by a combination of a capacitor C, resistors R1 and R2, and a transistor TR1 provided in the slave unit 300. Specifically, the circuit conditions of the resistors R1 and R2 in FIG. 4 are R1 <R2, and when the handset 300 is removed from the main body clock 200, the constant time TR1 is turned off by the C · R2 time constant, The point a voltage is in the OV state. Furthermore, TR1 changes from OFF to ON by the C · R2 time constant, and power supply from the power supply 350 of the slave unit starts at point a. Here, during the discharge time of the capacitor C, the voltage supplied to the second control means 341 decreases, and this is used as a trigger signal in this example.

  Hereinafter, control of the radio-controlled timepiece 1 will be described. FIG. 5 is a flowchart showing the control on the main body clock 200 side, and FIG. 6 is a flowchart showing the control on the handset 300 side. As shown in FIG. 5, when the power is turned on, the main body clock 200 is set as required (S101), and the first time measuring means 222 starts measuring time (S102). In the initial setting of this example, a reception command signal is transmitted to the second control means 431 of the child device 300 in the same manner as described later, and when the reception by the child device 300 is successful, the first time is determined based on the received time code. The time measuring means 222 and the second time measuring means 342 are configured to start time measurement.

  After the initial setting, when the timing data of the first timing unit 222 reaches a predetermined reception time (S103), the first control unit 221 transmits a reception command signal to the second control unit 341 (S104).

  Further, when the slave device 300 attached to the main body clock 200 has been successfully received, or when the slave device 300 that has been successfully received is subsequently attached to the main body clock 200, the first control means 221 has the second control. Since the time measurement data of the second time measurement means 342 is transmitted from the means 341 (S105), the first control means 221 corrects the time measurement data of the first time measurement means 222 based on the time measurement data (S106). Reception by the slave unit 300 is performed in response to a reception command signal or a trigger signal.

  When the timing data of the first timing means 222 is corrected, the corrected timing data of the first timing means 222 is transmitted to the second control means 341 (S107). This is for confirming whether the timing data of the first timing means 222 and the second timing means 342 are the same.

  On the other hand, as shown in FIG. 6, after the slave device 300 is initialized together with the main body clock 200 (S201), the second time measuring means 342 starts measuring time.

  When a reception command signal is transmitted from the first control means to the second control means 341 (S203), or when a trigger signal is input to the second control means 341 by removing the handset 300 from the main body clock 200. (S204), reception by the receiving means 330 is started (S205).

  When the reception is successful (S206), the second control means 341 operates the reception success display means 310, that is, turns on the LED as the reception success display means 310 (S207), and based on the received time code, the second timing means The timing data 342 is corrected (S208). Then, the corrected timing data of the second timing means 342 is transmitted to the first control means 221 of the main body clock 200 (S209). When the handset 300 is not attached to the main body clock 200, such transmission is performed when the handset 300 is attached to the main body clock 200.

  If reception processing is not completed even if reception is performed to some extent, such as when no radio wave is received (S210), the reception processing is automatically stopped to reduce power consumption (S211).

  When the timing data of the second timing means 342 is transmitted to the first control means 221 (S209), as described above, the first control means 221 corrects the timing data of the first timing means 222 (S106), and the corrected first The timing data of the timing means 222 is transmitted to the second control means (S107). When there is a reply to the second control means 341 (S212), the second control means 341 confirms whether the timing data of the first timing means 222 and the second timing means 342 match (S213). If they match, the data match display means 320 is activated, that is, the LED that is the data match display means 320 is turned on (S214).

  If they do not match, the time measurement data of the second time measuring means 342 is transmitted again to the first control means 221 (S209), and if there is a reply from the first control means 221 (S212), the match is confirmed (S213). Further, if the timekeeping data does not match even after repeating this series of processing several times (S215), the processing is automatically terminated to reduce power consumption. If the data do not match, it is considered that some trouble has occurred. An error display means may be provided, and in such a case, this may be configured to operate. Alternatively, the LED of the successful reception display unit 310 and the LED of the data match display unit 320 may be blinked at a predetermined timing.

  As described above, the radio-controlled timepiece of this example periodically receives standard time radio waves and corrects the time based on the time code included in the standard time radio waves. Furthermore, even if it is installed in a place where it is impossible or difficult to receive standard time radio waves, remove the handset from the main unit clock and bring it to a place where it can be received. When this is mounted on the main body clock, the time of the main body clock is corrected. According to such a configuration, it is possible to efficiently receive standard time radio waves without moving the entire radio-controlled timepiece, and the convenience can be improved.

  In addition, when the time correction data of the first time measuring means is corrected, the radio wave correction clock checks whether the time measurement data of the first time measuring means and the second time measuring means match, so that the time display means displays it. Time reliability can be improved reliably. Since the slave unit is provided with data coincidence display means for displaying that the timekeeping data of the first timekeeping means and the second timekeeping means coincide with each other, the user confirms the reliability of the currently displayed time. can do. The data coincidence display means can also be provided on the main body clock side.

  Furthermore, since the slave unit is provided with the reception success display means, the user can check the reception status of the time code by the reception success display means even when the slave unit is removed from the main unit clock. That is, it is excellent in convenience. The slave unit may be provided with time display means for displaying the time measured by the second time measuring means.

  In the radio-controlled timepiece of this example, the trigger signal is input to the second control means when the handset is removed from the main body timepiece, and the receiving means receives the time code in response to the trigger signal. According to such a configuration, the timing for receiving the time code can be set efficiently.

  Furthermore, if one slave unit can be attached to each of the plurality of main unit clocks, the time of the plurality of main unit clocks can be corrected by one single sub unit. It is also possible to correct the time of a plurality of main body clocks by one reception.

  Further, if the slave unit is standardized and a plurality of types of slave units can be attached to the main body clock, the versatility of the radio-controlled timepiece can be improved. For example, even in an area where the frequency of the standard time radio wave is different, the standard time radio wave can be received by replacing the slave unit with one corresponding to the local area. Such a configuration is very effective even when the radio-controlled timepiece is exported to a foreign country or imported from a foreign country.

  In addition, it is needless to say that the configuration of each part in the present example can be appropriately changed in design within the technical scope described in the claims, and is not limited to that illustrated in the drawings.

  INDUSTRIAL APPLICABILITY The present invention can be suitably used as a radio-controlled timepiece capable of rationally receiving a time code and correcting the time and a child device thereof.

It is explanatory drawing which concerns on the Example of this invention and shows a radio wave correction timepiece. It is explanatory drawing which concerns on the Example of this invention and shows a subunit | mobile_unit. It is explanatory drawing which concerns on the Example of this invention and shows the usage condition of a radio wave correction timepiece. It is a circuit diagram of a main body timepiece and a handset according to the embodiment of the present invention. 6 is a flowchart illustrating control on the main body clock side according to the embodiment of the present invention. It is a flowchart which shows the control by the side of a subunit | mobile_unit concerning the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Radio wave correction clock 200 Main body clock 201 Jack part 202 Terminal group 210 Time display means 211 Dial 212 Pointer 213 Motor 220 First microcomputer 221 First control means 222 First time measuring means 230 Power source of main body clock 300 Child machine 301 Terminal group 310 Successful reception display means 320 Data matching display means 330 Receiving means 331 Antenna 332 IC
340 2nd microcomputer 341 2nd control means 342 2nd timing means 350 Power supply of slave unit C Capacitor R1 Resistor R2 Resistor TR1 Transistor A Place where radio wave reception is impossible or difficult

Claims (1)

In a radio-controlled watch that corrects the time based on the time code transmitted by radio,
A main body clock and a handset that is detachably attached to the main body clock;
The main body clock is provided with first control means for controlling the main body clock, first time measuring means for measuring time, and time display means for displaying the time measured by the first time measuring means,
The slave unit displays a second control unit for controlling the slave unit, a second timing unit for timing the time, a receiving unit for receiving the time code, and that the time code has been successfully received. And a reception success display means ,
The main body clock or the slave unit is provided with data coincidence display means for displaying that the timekeeping data of the first timekeeping means and the second timekeeping means match,
In the radio-controlled timepiece, when the timing data of the first timing means reaches a predetermined reception time, the first control means transmits a reception command signal to the second control means, and the reception control signal receives the reception command signal. When the means receives the time code and the slave unit is removed from the main body clock, a trigger signal is input to the second control means, and the receiving means receives the time code in response to the trigger signal. West,
The slave unit corrects the timing data of the second timing unit based on the time code received by the receiving unit, and the main body clock corrects the first timing based on the timing data of the second timing unit. It corrects the timing data of the means,
When the handset attached to the main body clock has been successfully received, or when the handset that has been successfully received has been subsequently attached to the main body clock, the first control means sends the first control means to the second control means. Timekeeping data of the second timekeeping means is transmitted, and the first control means corrects the timekeeping data of the first timekeeping means based on the timekeeping data of the second timekeeping means transmitted from the second control means,
When the timing data of the first timing means is corrected, the first control means transmits the timing data of the first timing means to the second control means, and the second control means includes the first timing means and A radio-controlled timepiece that checks whether the time-measured data of the second time-counting means match and, if they match, activates the data-matching display means .

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