JP2005308396A - Electronic timepiece, control method of the same, program and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic timepiece capable of reporting the internal state of the electronic timepiece of a needle operation stop condition to a user. <P>SOLUTION: A radio-controlled timepiece 1 is provided with a clocking means for inputting a reference clock and clocking a time, a time displaying means 5 for displaying the time by a needle operation, a power generation means 10, electricity storage means 11, 12 charged by the power generation means, and a needle operation control means 41 for controlling the needle operation. The needle operation control means has a plurality of stop conditions. When any of stop conditions is corresponded, the needle operation control means stops the needle operation, and displays a second hand 54 at a prescribed position according to the corresponded stop condition. Since the operation control means performs different display for every stop condition, the user can grasp that the electronic timepiece 1 stops in any condition when the needle operation stops. Therefore, the user can correspond quickly according to the situation. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electronic timepiece, a method for controlling an electronic timepiece, a program for controlling an electronic timepiece, and a recording medium on which the program is recorded.

In recent years, an electronic timepiece using an electromotive force from a power generation means such as a solar battery stored in a power storage means such as a secondary battery and using this as a power source has been commercialized. In such an electronic timepiece having power generation means and power storage means, when power generation is not performed for a long time and the power storage means cannot be charged, the voltage of the power storage means decreases, the stepping motor for moving the hand stops, the crystal oscillation circuit The clock function is stopped due to the stoppage. In particular, when the crystal oscillation circuit is stopped, the time cannot be measured. Therefore, when the operation is resumed after being charged by the power generation means, the time must be adjusted.
In addition, recent electronic watches are also equipped with calendar information. By entering the current year, month, and day information at the time of manufacture and use, the date can be automatically updated when the month changes. It is like that. In a watch that stores such calendar information, the user must reset the year, month, and day information if the current year, month, and day information disappears due to a decrease in the voltage of the power storage means. I must. In a pointer-type (analog type) electronic timepiece, resetting the year, month, and day is more difficult and time-consuming than resetting the time.

  For this reason, when the amount of electricity stored in the electricity storage means falls below a preset reference value, such as when it is not charged for a long period of time, the needle movement is stopped and the power consumption is reduced to suppress the voltage drop of the electricity storage means, A device that prevents the crystal oscillation circuit from being stopped is known (for example, see Patent Document 1).

Japanese Patent No. 3062253

  However, since the radio-controlled timepiece described in Patent Literature 1 stops moving hands when the amount of stored power decreases, when the timepiece is in the hands-stopped state, the user can check that the stored amount of power is the reference value. There is a problem that it is not possible to determine whether the hand movement is stopped below the upper limit, or whether the hand movement is stopped because the amount of stored power is lost.

  In addition, in the radio-controlled timepiece provided with the power generation means, the present applicant detects the voltage of the power storage means with the power supply voltage detection circuit, and the power supply voltage becomes lower than the reference level or is not charged for, for example, 3 days. In some cases, we are developing a device that saves power by stopping hand movement or stopping radio wave reception processing.

This radio-controlled timepiece has an internal counter that counts up a reference signal from an internal reference clock such as a crystal, and measures time with this internal counter. Further, the reception operation is periodically repeated, and the time information of the internal counter is corrected to the received time data.
In such a radio-controlled timepiece, for example, it is conceivable to perform control so as to stop the hand movement when the power storage means is not charged for 3 days. In this case, sufficient electric power may be stored in the power storage means. At that time, the periodic reception operation is continued, the time of the internal counter is corrected, and the charging is resumed. Thus, it is conceivable to have a first power save mode that corrects the pointer to display the correct time.
In addition, when the amount of electricity stored in the electricity storage means falls below a set value, the movement is stopped and the periodic reception operation is also stopped, and the electricity storage amount of the electricity storage means is a predetermined value at which the crystal or control circuit stops. It is also conceivable to have a second power save mode that does not drop below.

  In such a radio-controlled timepiece having two types of power save modes, if the hand movement is stopped, the user cannot know which power save mode the stop state is due to, and take appropriate measures. There is a possibility that it cannot be taken.

  An object of the present invention is to provide an electronic timepiece capable of notifying the user of the internal state of the electronic timepiece in a state where the hand movement is stopped, a control method therefor, a program, and a storage medium.

  The electronic timepiece of the present invention includes a time measuring means for inputting a reference clock to measure time, a time display means for displaying the time by moving hands, a power generating means, a power storage means charged by the power generating means, and the hands operating An electronic timepiece having a plurality of stop conditions, and if any of the stop conditions is met, the hand movement control means stops the hand movement and A predetermined display according to the stop condition is performed.

In the present invention as described above, a plurality of stop conditions are set for the hand movement control means, and when any of the stop conditions is met, the hand movement is stopped. Power consumption can be reduced by stopping the hand movement when the voltage drops. For this reason, it is possible to prevent the oscillation circuit, the control circuit, and the like from being stopped as much as possible, and it is possible to prevent the resetting work that is performed when these circuits are stopped.
In addition, since the hand movement control means performs different display for each stop condition, the user can grasp in what state the electronic timepiece is stopped when the hand movement is stopped. For this reason, the user can take action according to the situation quickly. For example, when it is displayed that the hand movement is stopped because the stored voltage is low, the stored voltage may be increased by generating power with the power generation means, and the necessary measures can be easily performed. be able to.

In the present invention, the time display means includes at least a minute hand or a second hand, and the hand movement control means moves and stops the minute hand or the second hand to a position set according to each stop condition as the predetermined display. Is preferred.
In an electronic timepiece having a second hand, it is preferable that the second hand is moved to a set position and stopped. In an electronic timepiece having no second hand and only an hour / minute hand, the minute hand is preferably moved to a set position and stopped.
The predetermined position may be set to, for example, a 15 second position, a 30 second position, a 45 second position, or the like.
In this way, if the predetermined display is performed using the minute hand or the second hand, it is not necessary to provide a special hand or a liquid crystal panel to display the hand movement stop condition, that is, the state of the electronic timepiece, so the number of parts can be reduced. Cost increase can be suppressed.

In the present invention, the time display means may include a thin display device, and the hand movement control means may perform a display corresponding to each stop condition on the thin display device as the predetermined display.
Here, as the thin display device, a thin display device such as a liquid crystal panel or an organic EL panel can be used. According to such a configuration, since predetermined symbols and characters can be displayed on the thin display device, it is possible to display the status of the electronic timepiece in a form that the user can easily understand intuitively.

The electronic timepiece of the invention includes voltage detection means for detecting the voltage of the power storage means, and the hand movement control means is configured to detect when the voltage value detected by the voltage detection means is equal to or lower than a predetermined hand movement stop voltage value. Preferably, it is determined that at least one stop condition is satisfied, and a predetermined display according to the stop condition is performed.
In addition, a hand movement stop voltage value may be set as one stop condition among a plurality of stop conditions, and a hand movement stop voltage value may be set as two or more stop conditions. In addition, when setting a hand movement stop voltage value as two or more stop conditions, stop conditions other than a voltage value may be set separately, and a hand movement stop voltage value may be set to all stop conditions.
For example, when the voltage of the power storage means is 1.0 V or less, when the voltage is greater than 1.0 V and 1.1 V or less, three types of hand movement stop voltage values when the voltage is greater than 1.1 V and 1.2 V or less It is possible to set and perform a predetermined display depending on which of the three conditions is met, for example, the second hand may be stopped at the positions of 15 seconds, 30 seconds, and 45 seconds.

  By controlling the stop of the movement based on the voltage of the power storage means, it is possible to control the stop of the movement so that the voltage does not decrease and the oscillation circuit and the control circuit do not stop. For this reason, various circuits and the like are stopped due to a voltage drop, so that the state where resetting is necessary is hardly caused, and convenience can be improved.

The electronic timepiece of the invention includes a power generation detection unit that detects a power generation state of the power generation unit, and the hand movement control unit has a time when the power generation state is not detected by the power generation detection unit is equal to or longer than a set time In this case, it is preferable to determine that at least one stop condition is satisfied, and to perform a predetermined display according to the stop condition.
Also in the present invention, a time when power generation is not detected (power generation non-detection time) may be set as one stop condition among a plurality of stop conditions, or power generation non-detection may be set as two or more or all stop conditions. Time may be set.
For example, when the power generation non-detection time is 72 hours or more, when it is 96 hours or more, three types of power generation non-detection times are set for 120 hours, and which of these three conditions is met? A predetermined display may be performed.

  By controlling the stop of the movement based on the power generation non-detection time, the user can know how long power generation has not been performed, so the current state of the watch can be easily grasped, and the necessary response can be taken. Convenience can be improved with almost no need for setting.

Further, the electronic timepiece of the present invention includes portable detection means for detecting a portable state of the electronic timepiece, and the hand movement control means is at least when the portable detection means determines that the electronic timepiece is not carried. It may be determined that one stop condition is satisfied, and a predetermined display corresponding to the stop condition may be performed.
Electronic watches that are worn on the wristwatch or pocket watch are usually not used when not carried. Accordingly, if the portable detection means is provided and the movement of the hand is stopped when it is determined that the portable is not carried, the useless movement of the hand can be eliminated, the power consumption can be reduced, and the duration can be increased.

The electronic timepiece of the present invention comprises receiving means for receiving wireless information including time information, correction control means for correcting the time measuring means to the received time information, and reception control means for controlling the reception state by the receiving means. The reception control means preferably controls the continuation or stop of automatic reception according to the stop condition determined by the hand movement control means.
If the automatic reception state continues even after the hand movement is stopped, the timekeeping means can be updated with the received time information, so when returning from the hand movement stop state to the normal hand movement state, it is possible to return to the correct current time. .

The electronic timepiece of the invention includes a power generation detection unit that detects a power generation state of the power generation unit and a voltage detection unit that detects a voltage of the power storage unit, and the hand movement control unit detects power generation by the power generation detection unit. In addition, it is preferable to cancel the hand movement stop state when the voltage detected by the power storage detection unit is larger than a predetermined hand movement release voltage value.
If power is being generated and the power supply voltage is larger than a predetermined hand movement release voltage value, even if the hand movement stop state is released, there is almost no possibility that the power supply voltage suddenly decreases thereafter. Therefore, it is possible to cancel the hand movement stop state and return to the normal hand movement state, for example. Further, if the hand movement stop state is released under such conditions, the user does not need to release the manual operation separately, so that the operability can be improved.

  An electronic timepiece control method according to the present invention includes a timekeeping means for inputting a reference clock to measure time, a time display means for displaying the time by moving hands, a power generation means, and a power storage means charged by the power generation means. An electronic timepiece control method comprising: a hand movement control means for controlling the hand movement, wherein the hand movement control means has a plurality of stop conditions, and if any of the stop conditions is met, the hand movement control means It stops and performs the predetermined display according to applicable stop conditions.

  An electronic timepiece control program according to the present invention includes a timekeeping means for inputting a reference clock to measure time, a time display means for displaying the time by moving hands, a power generation means, and a power storage means charged by the power generation means. A control method program for an electronic timepiece comprising: a hand movement control means for controlling the hand movement, when any one of a plurality of stop conditions set in the hand movement control means is met. And stopping the hand movement and performing a predetermined display according to the corresponding stop condition.

  The computer-readable storage medium of the present invention is a recording medium on which the control program is recorded.

  According to the inventions of these control method, control program, and storage medium, the same operational effects as the electronic timepiece can be achieved.

  According to the present invention, it is possible to notify the user of the internal state of the electronic timepiece in a state where the hand movement is stopped.

[First Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram illustrating a configuration of a radio-controlled timepiece 1 that is an electronic timepiece according to the first embodiment.
The radio-controlled timepiece 1 is of an analog display type, and includes a receiving unit 2 as a receiving unit that receives wireless information including time information, a reference signal generating unit 3 that generates a reference clock, and a control that controls the entire apparatus. The circuit 4 and time display means 5 for displaying time and the like are provided.

  The receiving unit 2 includes an antenna 21 that receives wireless information including time information, a receiving circuit 22 that processes (amplifies, demodulates, etc.) the wireless information received by the antenna 21, and time information from a signal processed by the receiving circuit 22. And a receiving power supply circuit 24 for supplying power to the receiving circuit 22. The receiver 2 is controlled by a reception control means 25 that controls the radio wave reception process by controlling the driving of the reception power supply circuit 24. The radio information including the time information can be a long wave standard radio wave (JJY) or the like. However, the radio information is not limited to the standard radio wave and may be any information that includes the time information and can acquire the current time from the time information.

The reception circuit 22 starts receiving time information when the reception power supply circuit 24 is activated by a signal from the reception control means 25, and outputs the received time information to the decoding circuit 23. The time information decoded by the decoding circuit 23 is output to the reception time storage means 43.
The reception control means 25 operates the reception power supply circuit 24 to perform reception processing when a preset automatic reception time is reached or when a forced reception operation is performed by the user.

  The reference signal generation unit 3 includes an oscillation circuit 31 configured by a crystal resonator and the like, and a frequency division circuit 32 that divides a pulse from the oscillation circuit 31 to generate a reference clock (1 Hz or the like). . The generated reference clock is output to the clock control means 41.

The control circuit 4 includes a microcomputer (computer), and includes a hand movement control circuit 4A and a power supply control circuit 4B.
The hand movement control circuit 4A includes the decoding circuit 23, the reception power supply circuit 24, the reception control means 25, the oscillation circuit 31, and the frequency dividing circuit 32, as well as the time measurement control means 41, the hand position storage means 42, the reception time storage means 43, the hand movement A calendar drive control means 44 is provided.

The time display means 5 is an analog time instruction means, and includes a dial 51 having a scale, an hour hand 52, a minute hand 53, a second hand 54, and a date indicator. The date wheel can be viewed from the date display window 55 formed on the dial 51.
The time display means 5 further includes driving means such as an hour / minute hand motor for driving the hour hand 52 and the minute hand 53, a second motor for driving the second hand 54, a date indicator motor for driving the date indicator, and the like. These are controlled by the hand movement / calendar drive control means 44.

The clock control means 41 measures time based on a reference signal (reference clock) input from the frequency divider circuit 32. The timekeeping control means 41 outputs a predetermined pulse signal to the hand position storage means 42 according to the timekeeping time, and the hand position storage means 42 outputs a drive signal to the hand movement / calendar drive control means 44 according to the input. Thus, the hand movement in the time display means 5 is controlled.
Therefore, the timekeeping control means 41 constitutes a timekeeping means and a hand movement control means.

For this reason, the timing control means 41 includes internal counters for hour, minute, second, and calendar that are counted up by the reference signal input from the frequency dividing circuit 32.
The hand position storage means 42 includes hour, minute, second, and calendar position counters corresponding to the hands of the time display means 5 and the position of the date indicator.

The reception time storage means 43 includes hour, minute, second and calendar time counters for storing received time information. The time information stored in the reception time storage means 43 is set in an internal counter of the timekeeping control means 41. Therefore, the reception time storage means 43 constitutes a correction control means for correcting the time measuring means with the received time information.
In this embodiment, the hand movement / calendar drive control means 44 is a drive circuit that drives and controls a second motor for driving the second hand 54, an hour / minute hand motor for driving the hour hand 52 and the minute hand 53, and a date indicator motor for driving the date dial. It is configured with.

  The timekeeping control means 41 outputs a drive signal for driving the second motor to the hand position storage means 42 every second during normal hand movement to update the second counter corresponding to the position of the second hand. Similarly, a drive signal for driving the hour / minute hand motor is output to the hand position storage means 42 every minute to update the hour / minute hand counter. Further, a driving signal for driving the date dial driving means is output to the hand position storage means 42 every 24 hours to update the calendar counter. The hand movement calendar drive control means 44 drives each motor by outputting a drive signal to the hand movement calendar drive control means 44 in response to the input drive signal at the same time as each counter is updated by the input of each drive signal. To do. Therefore, if each pointer or date indicator and each counter of the hand position storage means 42 are synchronized in advance, the pointer, date indicator and each counter are synchronized by the drive signal output from the time measuring control means 41 thereafter. Driven. For this reason, the needle position storage means 42 stores the position of the pointer or the like.

  When the time information received by the reception time storage means 43 is stored in the reception time storage means 43, the clock control means 41 compares the time information with the information in the hand position storage means 42, and according to the difference amount. The drive signal is output to the needle position storage means 42. Accordingly, the stored information in the pointer and hand position storage means 42 is corrected to the received time information (current time), and thereafter the normal hand movement is restored.

The power supply control circuit 4B controls the solar battery 10 as a power generation means, the secondary battery 11 as a power storage means, and the capacitor 12, and includes a backflow prevention circuit 61, a limiter circuit 62, an immediate start circuit 63, and a charge control circuit. 64, a voltage detection circuit 65 that is a voltage detection means, a charge detection circuit 66, and a power generation detection circuit 67 that is a power generation detection means.
The backflow prevention circuit 61 is a general backflow prevention circuit composed of a diode or the like. The limiter circuit 62 is a switch for preventing the secondary battery 11 from being overcharged. The limiter circuit 62 is turned on when the voltage of the power storage means reaches a predetermined voltage, for example, 2.2 V or more, and short-circuits both ends of the solar battery 10. is there.

For example, as shown in FIG. 2, the immediate start circuit 63 includes two diodes 81 and 82 connected in series to the secondary battery 11 and a first transistor 83 that functions as a switch connected in parallel to the diode 81. And a second transistor 84 functioning as a switch connected in parallel with the two diodes 81 and 82.
When there is no power generation for a long time and the voltage of the power storage means decreases and the oscillation circuit 31 stops, the transistors 83 and 84 are turned off and immediately set to the start state. When the solar cell 10 generates power in this state and the generated power is supplied, the transistors 83 and 84 are turned off, so that the current is supplied to the secondary battery 11 through the diodes 81 and 82. For this reason, an electromotive voltage is generated in the diodes 81 and 82 connected in series to the secondary battery 11, so that the apparent voltage of the secondary battery 11 rises and the oscillation circuit 31 that requires a predetermined voltage for driving. Etc. can be activated quickly, and activation of the radio-controlled clock 1 can be accelerated.

  To release the immediate start circuit 63, first, when the radio-controlled timepiece 1 is activated, the first transistor 83 is turned on. In this state, the voltage of the secondary battery 11 is a predetermined voltage (eg, 1.0 V). Then, the second transistor 84 may be turned on.

The voltage detection circuit 65 detects whether or not the voltage of the secondary battery 11 has reached the immediate start release voltage (1.0 V) based on the sampling signal from the charge control circuit 64 and also turns on the limiter circuit 62. It is detected whether or not (2.2 V), and the detection result is fed back to the charge control circuit 64.
The charge detection circuit 66 monitors the voltage of the secondary battery 11 and detects whether or not charging is in progress.
The power generation detection circuit 67 monitors the solar cell 10 as power generation means and detects whether or not power generation is in progress.
Since each of these detection circuits 65 to 67 can be a known one that has been conventionally used, a description thereof will be omitted.
The charge control circuit 64 controls the limiter circuit 62 and the immediate start circuit 63 based on the outputs of the detection circuits 65 to 67 to control the charging of the storage means by the solar cell 10.

  Here, the hand movement control circuit 4A and the power supply control circuit 4B may be configured by appropriate circuit elements or the like, but in the present embodiment, are configured by a microcomputer. That is, each means and circuit are configured by causing a microcomputer having a CPU and a memory (ROM, RAM, etc.) to read and operate a predetermined program.

The operation of the control circuit 4 in the radio-controlled timepiece 1 having such a configuration will be described with reference to FIGS.
When the driving of the radio-controlled timepiece 1 is started, the control circuit 4 determines whether or not the solar cell 10 is generating power using the power generation detection circuit 67 (step 1, hereinafter step is abbreviated as S).
If power generation is not being performed in S1, PS processing (power saving processing) for determining whether or not to shift to power saving is executed (S2).
On the other hand, if it is determined in S1 that the power generation is being performed, a PS canceling process (power save canceling process) for determining whether to cancel the power save mode is executed (S3).
The processes of S1 to S3 are repeatedly executed based on a preset sampling timing.

Next, the PS process of S2 will be described with reference to FIG.
The control circuit 4 determines whether or not the first power save mode (PS1) has already been established (S11). When it is determined as N in S11, the control circuit 4 determines whether or not the second power save mode (PS2) is set (S12).
If it is determined as N in S12, the control circuit 4 uses the voltage detection circuit 65 to determine whether or not the voltage of the power storage means (power supply voltage) is equal to or lower than the first hand movement stop voltage value (1.10V) ( S13).

If it is determined as N in S13, the control circuit 4 determines whether or not a power generation non-detection time (72 hours) has elapsed since the previous power generation was detected (S14).
In S14, in the case of N, that is, when the voltage of the power storage means is higher than 1.10V and the power generation stop state is within 72 hours, the control circuit 4 performs the PS process without setting the power save mode. Exit.

On the other hand, in S14, when 72 hours or more have passed since the previous power generation detection, the control circuit 4 sets the drive mode to the first power save mode (PS1) (S15), and ends the PS process.
In this embodiment, when set to PS1, the hand movement control circuit 4A stops the second hand 54 at the 15 second position by the time measuring control means 41 as shown in FIG. The hour / minute hand and calendar (date wheel) are stopped at the current position. On the other hand, the automatic reception process by the reception control means 25 is continued as usual. Therefore, the internal counter of the clock control means 41 is also updated with the received time information. That is, the time keeping control means 41 keeps counting the correct time, but since the drive signal is not output from the time keeping control means 41 to the hand position storage means 42, the counter value of the hand position storage means 42 is not updated and remains stopped. Yes, each pointer also remains stopped.

  In S13, when the power supply voltage is 1.10 V or less, the control circuit 4 sets the drive mode to the second power save mode (PS2) (S16) and ends the PS process. In the present embodiment, when set to PS2, the hand movement control circuit 4A stops the second hand 54 at the 45 second position by the time measuring control means 41 as shown in FIG. The hour / minute hand and calendar (date wheel) are stopped at the current position. Also, unlike PS1, automatic reception processing by the reception control means 25 is also stopped. Therefore, the internal counter of the clock control means 41 is updated only with the reference signal from the frequency dividing circuit 32. Also at this time, since the driving signal is not output from the timing control means 41 to the needle position storage means 42, the counter value of the needle position storage means 42 is not updated and is stopped, and each pointer is also stopped. .

On the other hand, if it is already PS2 and it is determined as “Y” in S12, the power saving mode changing process is not performed, and the PS process is ended while maintaining the PS2 state.
If it is already PS1 and “Y” is determined in S11, the control circuit 4 further uses the voltage detection circuit 65 to set the voltage (power supply voltage) of the power storage means to the second hand stop voltage. It is determined whether or not it is equal to or less than the value (1.20V) (S17).
If "Y" is determined in S17, PS1 is changed to PS2 (S16). If “N” is determined in S17, the PS process is terminated while the state of PS1 is maintained.
That is, when the PS1 state has already been reached, that is, when power generation has not been detected for 72 hours or more, the second hand movement is not performed below the first hand movement stop voltage value (1.10V) as in S13, but with a margin. It is set to shift to PS2 at a stop voltage value (1.20 V) or less.

  As shown in FIG. 3, when the PS process is performed in S2, the power generation detection process routine ends. As described above, this power generation detection process routine is executed at a predetermined sampling interval, and the states of PS1 to PS3 set in the PS process (S2) are continued unless they are canceled in the PS release process (S3).

On the other hand, as shown in FIG. 3, the PS release process (S3) executed when the power generation detection circuit 67 determines that power generation is in progress is specifically performed as shown in FIG.
In the PS release process, the control circuit 4 first determines whether or not it is PS1 (S21). If "Y" is determined in S21, that is, if power generation is detected in the PS1 state, the control circuit 4 cancels PS1 and returns to normal operation (S22).

If “N” is determined in S21, the control circuit 4 determines whether or not PS2 is set (S23).
If “Y” is determined in S23, the control circuit 4 determines whether or not the power supply voltage is equal to or higher than the hand movement release voltage value (1.25V) by using the voltage detection circuit 65 (S24).
If “Y” is determined in S24, the operation returns to the normal operation (S22). On the other hand, if “N” is determined in S24, it is determined that the normal hand movement cannot be restored yet, and the release process is not performed.
If “N” is determined in S23, the normal hand movement state is originally established, and therefore the release process is not performed.

According to this embodiment, there are the following effects.
(1) When the first hand movement stop condition (PS1) is satisfied, the hand movement control circuit 4A satisfies the first hand movement stop condition that the power supply voltage is greater than 1.10V and the power generation non-detection time is 72 hours or longer. ), The second hand 54 is stopped at the 15 second position, and when the second hand movement stop condition that the power supply voltage is 1.10 V or less is met, the second power save mode (PS2) is entered. The second hand 54 is stopped at the 45-second position. As described above, since the stop position of the second hand 54 is changed according to the corresponding hand movement stop condition, the user can check in which position the second hand 54 is stopped so that the radio-controlled timepiece 1 is in which state. You can easily see if there is. For this reason, for example, the user needs to spend a relatively long time for generating and charging the solar cell 10 of the radio-controlled timepiece 1 with light in the PS2 state, and in the PS1 state, the comparison is necessary. It can be judged that a short time is sufficient. For this reason, an appropriate response according to each state can be taken, and the radio-controlled timepiece 1 can be easily used.

  (2) The hand movement control circuit 4A stops the automatic radio wave reception process in the second power save mode (PS2), but continues the automatic radio wave reception process in the first power save mode (PS1). The time counting control means 41 can measure the exact time. For this reason, when returning from the PS1 state to normal operation, it is possible to accurately return to the current time, so that the accuracy expected of the radio-controlled timepiece 1 can be maintained.

(3) In the first power save mode (PS1), the hand movement control circuit 4A continues the automatic reception process but stops the hand movement, so that the power consumption can be reduced accordingly. That is, in the radio-controlled timepiece, the movement of the hands is larger in energy consumption than in the reception process. Therefore, even when power is not being generated, the power supply voltage drop speed can be suppressed, and the period during which the hand movement state can be restored without resetting (the duration of the timepiece 1) can be lengthened.
Further, since the hand movement control circuit 4A stops the hand movement and automatic reception processing in the second power save mode (PS2), the power consumption can be greatly reduced, and the power supply voltage is lowered even when the power supply voltage is low. It is possible to reduce the speed and lengthen the period (duration of the timepiece 1) that can return to the hand movement state without resetting.

  (4) The hand movement control circuit 4A is normally set to the second power save mode (PS2) when the power supply voltage becomes 1.10V or lower, but becomes the first power save mode (PS1). In such a state, the power reception voltage is set to PS2 only when the power supply voltage becomes 1.20 V or less, and automatic reception processing is stopped to further reduce energy consumption. For this reason, when power generation is not performed for a long period of time, even if it is not lower than 1.10 V, it is possible to suppress a decrease in energy consumption by shifting to PS2 at an earlier stage. Power saving control can be performed.

(5) In the first power save mode (PS1), the hand movement control circuit 4A returns to the normal hand movement when power generation is detected. Therefore, if the power supply voltage is relatively high, the hand movement control circuit 4A quickly moves to the normal hand movement. Can return.
On the other hand, in the case of the second power save mode (PS2), the power supply voltage is 1.25 V, which is restored with a higher hurdle than the condition for shifting to the power save mode. Even if the voltage value of the power supply voltage increases due to power generation, it does not return to normal operation, and it returns to normal operation only when charging continues to some extent and the voltage becomes high. Therefore, it is possible to prevent the hand movement from stopping. Therefore, stable control can be performed.

[Second Embodiment]
A second embodiment of the present invention will be described. In the present embodiment, the same or similar components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted or simplified.
The second embodiment is different from the first embodiment in the specific processes of the PS process (S2) and the PS release process (S3). Therefore, only each process will be described.
As shown in FIG. 7, in the PS process of the second embodiment, when it is determined in S13 that it is not 1.10V or less, it is further determined whether the power supply voltage is 1.20V or less (S18), and S18. When “Y” is determined in step B1, the difference is that the BLD hand movement or PS3 setting process (S19) is performed. Since the other processes S11 to S17 are the same as those in the first embodiment, description thereof will be omitted.

  Here, the BLD hand movement is a hand movement for a battery life indicator, and for example, the second hand 54 operates differently from a normal hand movement so as to move the second hand 54 every 2 seconds for 2 seconds. It is. PS3 (third power save mode) is a mode in which, for example, the second hand 54 is stopped at the 30-second position and the automatic reception process is continued.

  Further, in the PS release process (S3) of the second embodiment, as shown in FIG. 8, when it is determined that the PS is PS2 in S23, the process proceeds to PU operation (S25). The PU operation means power-up operation and means that power generation is in progress. This PU hand movement may be set to a different hand movement operation from, for example, a normal hand movement and a BLD hand movement in which the second hand 54 is moved every 5 seconds.

If it is determined in S23 that it is not PS2, the hand movement control circuit 4A determines whether it is BLD hand movement or PS3 (S26). If "Y" is determined in S26, the hand movement control circuit 4A determines whether the power supply voltage is 1.25 V or higher (S24), and if it is 1.25 V or higher, returns to normal hand movement (S22).
Further, in S24, if it is less than 1.25V, the hand movement control circuit 4A determines whether it is 1.10V or less (S27), and if it is 1.10V or less, PU operation (S25) is performed. If it is greater than 10V, BLD hand movement is continued.

If the hand movement control circuit 4A determines in S26 that it is not a BLD hand movement, it determines whether it is a PU hand movement (S28). If it is determined as “Y” in S28, the hand movement control circuit 4A determines whether or not the power supply voltage is 1.25V or higher (S29). If it is 1.25V or higher, it returns to normal hand movement (S22). ). Moreover, when it is less than 1.25V, PU hand movement is continued.
Further, when it is determined as “N” in S28, the normal hand movement state is continued, and therefore the normal hand movement state is continued.

Also in this embodiment, the same operational effects as those of the first embodiment can be achieved.
In addition, by performing the PS process shown in FIG. 7, the power supply voltage is reduced from 1.10V to 1.20V or less, that is, if there is no power generation as it is, PS2 is entered and the automatic reception process is stopped. Can be notified to the user. For this reason, the user can perform power generation to prevent the shift to PS2, and thus can continue automatic reception processing and perform accurate timekeeping, thereby improving convenience.

  Further, in the PS release processing shown in FIG. 8, when power generation is detected in PS2, the process moves to PU hand movement, so that the user can confirm that power is being generated and can take subsequent actions.

It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within a scope that can achieve the object of the present invention are included in the present invention.
The PS process and the PS release process are not limited to the above embodiments. For example, the hand movement stop condition for shifting to the PS process is not limited to the power supply voltage and the power generation non-detection time, but may be performed by detecting the carrying state. Here, as a method for detecting the carrying state, for example, a sensor for detecting the carrying state such as an angle sensor or an acceleration sensor may be provided in the watch. In addition, when a generator using a rotating weight is provided, if the watch is carried, the rotating weight rotates to generate power. Good.
These hand movement stop conditions may be set by combining a plurality of types, and a plurality of stop conditions may be set, or a plurality of stop conditions may be set by changing the set values in one kind of hand movement stop conditions. Also good.
Further, the conditions for the PS release process may be set as appropriate according to the conditions for shifting to the PS process.
In short, specific hand movement stop conditions and release conditions may be set as appropriate during implementation.

  Further, the time display means 5 is not limited to one using a pointer, but may be one using a disk, an annular shape or an arc shape. In particular, since it is mechanically driven, it is preferable that the display means be of a system that can greatly reduce energy consumption by stopping the hand movement.

  Furthermore, the display method of the hand movement stop state is not limited to the method using the second hand 54, and the minute hand 53 may be moved to a predetermined position and stopped. In addition, a dedicated pointer different from the hour, minute and second hands may be provided and displayed. Furthermore, it may be displayed using calendar display means such as a date wheel. Further, a thin display device such as an LCD or an organic EL panel may be used for display. When a thin display device is used, the hand movement stop condition may be displayed by characters or symbols, or an analog pointer is displayed on the screen and displayed in a state where the pointer is stopped at a predetermined position. By doing so, the hand movement stop condition may be displayed.

  The power generation means is not limited to the solar cell 10, and various power generation devices such as a power generation device using a rotating weight, a power generation device driven by a spring, and a power generation device having a thermocouple and generating power at a temperature difference can be used. .

Furthermore, in the present invention, a CPU, a memory, and the like are arranged in the radio-controlled timepiece 1 so as to function as a computer, and the hand movement control circuit 4A and the power supply control circuit 4B are configured by this computer. You may comprise by.
However, if it is configured by a computer, the conditions can be easily changed simply by changing the program, so that there is an advantage that appropriate control according to various radio-controlled timepieces 1 can be easily performed.
In order to incorporate data such as a predetermined program and set values into the computer in the radio-controlled timepiece 1, it is usually sufficient to store in advance in a memory such as a RAM or ROM incorporated in the radio-controlled timepiece 1. Further, the program and data may be installed later. In this case, a recording medium such as a memory card or a CD-ROM may be directly inserted into the radio-controlled timepiece 1, or a device that reads these recording media may be externally connected to the radio-controlled timepiece 1. Further, a program may be supplied and installed by communication by connecting a LAN cable, a telephone line, or the like to the radio-controlled timepiece 1 or using the antenna 21.
The electronic timepiece is not limited to a radio wave correction timepiece having a receiving means for receiving time information, but may be a normal quartz timepiece.

The block diagram which shows the structure of the radio wave correction timepiece in 1st Embodiment of this invention. The circuit diagram which shows the immediate start circuit of this embodiment. The flowchart which shows the process in the hand movement control circuit of this embodiment. The flowchart which shows the content of PS processing in FIG. Schematic which shows operation | movement of the pointer | guide during the PS process. The flowchart which shows the content of the PS cancellation | release process in FIG. The flowchart which shows the content of PS processing in 2nd Embodiment. The flowchart which shows the content of the PS cancellation | release process in 2nd Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Radio wave correction clock, 3 ... Reference signal production | generation part, 4 ... Control circuit, 4A ... Hand movement control circuit, 4B ... Power supply control circuit, 5 ... Time display means, 10 ... Solar cell, 11 ... Secondary battery, 12 ... Capacitor , 21 ... Antenna, 22 ... Reception circuit, 25 ... Reception control means, 31 ... Oscillation circuit, 32 ... Frequency division circuit, 41 ... Timekeeping control means, 42 ... Hand position storage means, 43 ... Reception time storage means, 44 ... Hand movement Calendar drive control means 51: Dial, 52 ... Hour hand, 53 ... Minute hand, 54 ... Second hand, 61 ... Backflow prevention circuit, 62 ... Limiter circuit, 63 ... Immediate start circuit, 64 ... Charge control circuit, 65 ... Voltage detection Circuit 66 ... Charge detection circuit 67 ... Power generation detection circuit

Claims (11)

Timekeeping means for inputting a reference clock to measure time, time display means for displaying the time by hand movement, power generation means, power storage means charged by the power generation means, and hand movement control means for controlling the hand movement An electronic timepiece comprising:
The hand movement control means has a plurality of stop conditions, and when any of the stop conditions is satisfied, stops the hand movement and performs a predetermined display according to the corresponding stop condition. clock. The electronic timepiece according to claim 1,
The time display means includes at least a minute hand or a second hand,
The electronic timepiece is characterized in that the hand movement control means moves and stops the minute hand or the second hand to a position set in accordance with each stop condition as the predetermined display. The electronic timepiece according to claim 1,
The time display means includes a thin display device,
The electronic timepiece is characterized in that the hand movement control means performs display according to each stop condition on the thin display device as the predetermined display. The electronic timepiece according to any one of claims 1 to 3,
Voltage detecting means for detecting the voltage of the power storage means,
The hand movement control means determines that at least one stop condition is satisfied when the voltage value detected by the voltage detection means is less than or equal to a predetermined hand movement stop voltage value, and determines a predetermined value according to the stop condition. An electronic timepiece characterized by performing display. The electronic timepiece according to any one of claims 1 to 4,
Comprising power generation detection means for detecting the power generation state of the power generation means,
The hand movement control means determines that at least one stop condition is satisfied when a time during which the power generation state is not detected by the power generation detection means is equal to or longer than a set time, and a predetermined display corresponding to the stop condition An electronic timepiece characterized by performing. The electronic timepiece according to any one of claims 1 to 5,
Portable detection means for detecting a portable state of the electronic timepiece;
The hand movement control means determines that at least one stop condition is satisfied when the portable detection means determines that the electronic timepiece is not carried, and performs a predetermined display according to the stop condition. An electronic timepiece. The electronic timepiece according to any one of claims 1 to 6,
Receiving means for receiving wireless information including time information, correction control means for correcting the timekeeping means to the received time information, and reception control means for controlling the reception state by the receiving means,
The electronic timepiece according to claim 1, wherein the reception control means controls continuation or stop of automatic reception according to a stop condition determined by the hand movement control means. The electronic timepiece according to any one of claims 1 to 7,
Power generation detection means for detecting the power generation state of the power generation means, and voltage detection means for detecting the voltage of the power storage means,
The hand movement control means cancels the hand movement stop state when power generation is detected by the power generation detection means and the voltage detected by the power storage detection means is greater than a predetermined hand movement release voltage value. clock. Timekeeping means for inputting a reference clock to measure time, time display means for displaying the time by hand movement, power generation means, power storage means charged by the power generation means, and hand movement control means for controlling the hand movement , An electronic timepiece control method comprising:
The hand movement control means has a plurality of stop conditions, and when any one of the stop conditions is met, the hand movement control means stops the hand movement and performs a predetermined display according to the corresponding stop condition. Control method. Timekeeping means for inputting a reference clock to measure time, time display means for displaying the time by hand movement, power generation means, power storage means charged by the power generation means, and hand movement control means for controlling the hand movement , An electronic timepiece control method program comprising:
Causing the hand movement control means to stop moving the hand and perform a predetermined display according to the corresponding stop condition when any one of the set stop conditions is met. An electronic timepiece control method program characterized by the above.   A computer-readable recording medium on which the program according to claim 10 is recorded.

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