JP2010197343A - Pointer position detection corrector and analog electronic clock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pointer position detection corrector and an analog electronic clock which reduce a consumption of an electric power required for detecting an unnecessary position. <P>SOLUTION: The pointer position detection corrector includes pointer position detecting means (S15 to S17) for detecting whether or not a pointer of a clock is in a normal position, a pointer position correcting means (S18) for correcting the position of the pointer to the normal position when the pointer position detecting means detect that the pointer is not in the normal position, a examining means (S12)for examining at which timing during an examining period it is detected that the pointer is not in the normal position and a detecting operation control means (S13) for operating the pointer position detecting means at a timing determined in accordance with the examined result of the examining means. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a pointer position detection and correction device that performs position detection and position correction of a pointer, and an analog electronic timepiece including such a pointer position detection and correction device.

  Previously, it is possible to detect the position of the pointer by detecting whether or not the detection hole provided in the gear of the watch is in a state where it overlaps at a predetermined detection position at a predetermined detection time. There is known an automatic correction clock that corrects the position of a pointer by rapidly feeding the pointer while performing the adjustment (for example, Patent Document 1).

JP 2000-162335 A

  For example, the position detection of the pointer is performed by irradiating the light from the light emitting element and detecting the light passing through the detection hole of the gear with the light receiving element. Therefore, power consumption increases as the number of position detections increases. In addition, in an analog electronic timepiece or the like that operates by solar power generation, when a situation in which power generation cannot be performed for a long period of time continues, the time when the timepiece function is stopped may be advanced by power consumption for detecting the position of the hands.

  The phenomenon that the position of the pointer is deviated from the normal position is almost always caused by a special situation such as giving a strong vibration to the watch or exposing the watch to a strong magnetic field. Moreover, such a special situation frequently occurs depending on the user or not at all depending on the user. Further, it is considered that the user who frequently causes such a special situation often has a certain tendency of occurrence depending on the time of day.

  The object of the present invention is to detect the position of the pointer at an effective timing and to omit the position detection of the pointer at a meaningless timing, thereby reducing the power consumption for unnecessary position detection. It is to provide a detection correction device and an analog electronic timepiece.

In order to achieve the above object, the invention according to claim 1
Pointer position detection means for detecting whether or not the watch pointer is in a normal position;
Pointer position correcting means for correcting the position of the pointer to a normal position when the pointer position is detected by the pointer position detecting means to be not in a normal position;
Investigation means for investigating whether the pointer is detected at a normal position by operating the pointer position detection means intermittently over a predetermined investigation period;
An operation timing determination means for determining a timing for operating the pointer position detection means in accordance with a result of the investigation by the investigation means;
Detection operation control means for operating the pointer position detection means at a timing determined by the operation timing determination means after the end of the investigation period;
It is characterized by having.

The invention described in claim 2 is the pointer position detection correction device according to claim 1,
The investigation means includes
It is characterized by investigating whether or not the pointer is detected at a normal position at regular intervals over a plurality of investigation periods.

The invention described in claim 3 is the pointer position detection correction device according to claim 2,
The operation timing determining means includes
The timing at which the pointer is detected not to be in a normal position during the examination period is determined as the timing at which the pointer position detecting means is operated.

According to a fourth aspect of the present invention, in the pointer position detection / correction device according to the first aspect,
The investigation means includes
Investigate whether the guideline is detected to be in a normal position every multiple unit time over a multi-day survey period,
The operation timing determining means includes
Of the timings detected when the pointer is not in a normal position during the survey period, only the timing is used for the timing when the number of times is low, depending on the number of times detected as not being in a normal position. The timing for operating the pointer position detecting means is determined, and the timing at which the number of times is large is determined as the timing for operating the pointer position detecting means including the timing and the timing before or after the unit time from the timing. It is characterized by

The invention according to claim 5 is the pointer position detection correction device according to claim 1,
The pointer position detecting means is configured to detect whether or not a detected portion provided on a gear interlocked with the pointer is at a predetermined detection position at a predetermined time.

A sixth aspect of the present invention provides the pointer position detection and correction device according to the first aspect,
It has an operation unit for inputting operation commands from the outside.
The investigation means is activated when a predetermined operation command is input via the operation unit.

The invention according to claim 7 is the pointer position detection and correction device according to claim 1,
Storage means for storing a data table in which flag information indicating whether or not to operate the pointer position detection means for each of a plurality of timings is provided;
The operation timing determination means sets flag information corresponding to each timing of the data table according to the determination content of whether to operate the pointer position detection means,
The detection operation control means determines whether or not to operate the pointer position detection means based on flag information corresponding to each timing of the data table.

The invention described in claim 8
Multiple pointers that display the time,
The pointer position detection and correction device according to any one of claims 1 to 7, which performs position detection and position correction of the plurality of pointers,
An analog electronic timepiece characterized by comprising:

  According to the present invention, the timing at which the position of the pointer tends to deviate from the normal position is investigated by the investigation means, and the detection processing of the pointer position is performed at a timing at which the tendency to deviate is high. As a result, power consumption can be reduced.

It is a front view which shows the analog electronic timepiece of embodiment of this invention. It is a longitudinal cross-sectional view explaining the train wheel mechanism of the analog electronic timepiece of FIG. It is the rear view which looked at the several gearwheel which rotates a pointer | guide from the back cover side. It is a front view which shows the structure of the second hand wheel to which the second hand is fixed. It is a front view which shows the structure of the minute hand wheel and intermediate wheel to which a minute hand is fixed. It is a front view which shows the structure of the hour hand wheel to which an hour hand is fixed. It is a block diagram which shows the circuit structure of an analog electronic timepiece. It is a flowchart which shows the control procedure of 1 second signal input processing. It is a flowchart which shows the control procedure of a time carry signal input process. It is a flowchart which shows the control procedure of the sampling process performed by FIG.9 S12. It is a flowchart which shows the control procedure of a sampling switch-on process. It is a data chart which shows an example of a detection flag registration table. It is a part of flowchart which shows the control procedure of a needle | hook correction | amendment process. This is a branching portion of the flowchart of the needle correction process. It is a flowchart which shows the control procedure of the sampling process of 2nd Embodiment. It is a flowchart which shows the process sequence of the sampling switch-on process of 2nd Embodiment. It is a data chart which shows an example of the detection result data table used by the sampling process of 2nd Embodiment. It is a data chart which shows the content of the detection flag registration table set based on the value of the detection result data table of FIG.

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

[First Embodiment]
FIG. 1 is a front view showing an analog electronic timepiece according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view of an essential part thereof, and FIG. 3 is a rear view of a plurality of gears for rotating hands as viewed from the back cover side. It is.

  An analog electronic timepiece 1 according to this embodiment displays time by rotating a hand by electronic control, and is, for example, a wristwatch body or a table clock. On the front side of the analog electronic timepiece 1, a dial plate 5 and a solar panel 9 are provided below the windshield glass. In the center of the dial plate 5 and the solar panel 9, through holes 5a and 9a (FIG. 2) are provided for passing the second hand shaft 20a, the minute hand shaft 25a, and the hour hand shaft 27a from the internal mechanism to the front side, and these shafts 20a and 25a. , 27a, the second hand 2, the minute hand 3, and the hour hand 4 are fixed, respectively. As the shafts 20a, 25a, and 27a rotate, the second hand 2, the minute hand 3, and the hour hand 4 rotate on the dial 5, and the time is displayed.

  As shown in FIG. 2, the hour hand shaft 27a to which the hour hand 4 is fixed and the minute hand shaft 25a to which the minute hand 3 is fixed are hollow tubular shafts, and the minute hand shaft 25a is passed through the hour hand shaft 27a. The second hand shaft 20a is passed through the shaft 25a so that the second hand shaft 20a, the minute hand shaft 25a, and the hour hand shaft 27a are rotatable about the same rotation axis.

  The second hand shaft 20 a, the minute hand shaft 25 a and the hour hand shaft 27 a are respectively fixed to the rotation centers of the second hand wheel 20, the minute hand wheel 25 and the hour hand wheel 27 which are arranged to overlap each other on the back side of the dial 5. In FIG. 3, the minute hand wheel 25 and the hour hand wheel 27 are in a state where they cannot be seen overlapping the second hand wheel 20 on the front side. The second hand wheel 20, the minute hand wheel 25 and the hour hand wheel 27 can be rotated around the same rotation shaft.

  FIG. 3 is a diagram of the train wheel as viewed from the back cover side. As shown in FIG. 3, the drive system of the analog electronic timepiece 1 includes a first drive system 11 that rotates the second hand 2, and an hour hand 4. The drive system is separated into a second drive system 12 that rotates in conjunction with the minute hand 3, and the two drive systems 11 and 12 can be driven independently. The first drive system 11 includes a first stepping motor 17, a fifth wheel 18 and a second hand wheel 20, and the movement of the rotor 17c of the first stepping motor 17 is a rotor kana 17d, a fifth wheel 18, a fifth wheel kana. 18a, transmitted to the second hand wheel 20 and configured to rotate the second hand wheel 20 and the second hand 2.

  The second drive system 12 includes a second stepping motor 22, an intermediate wheel 23, a third wheel 24, a minute hand wheel 25, a minute wheel (not shown), an hour hand wheel 27, and the like, and a rotor 22 c of the second stepping motor 22. Motion is transmitted to the rotor kana 22d, the intermediate wheel 23, the intermediate wheel kana 23a, the third wheel 24, the third wheel kana 24a, and the minute hand wheel 25. The minute hand wheel 25 and the minute hand 3, and the hour hand wheel 27 and the hour hand 4 rotate in conjunction with each other by being transmitted to the car pinion 26a (see FIG. 2) and the hour hand wheel 27.

  In FIG. 2, 6 is an upper housing, 7 is a lower housing, 10 is a circuit board, 14 and 15 are bearing plates for holding the shafts of the respective gears, 17a is a coil block of the first stepping motor 17, and 17b is a first housing. A stator of the stepping motor 17, 22 a is a coil block of the second stepping motor 22, and 22 b is a stator of the second stepping motor 22.

  Further, the internal mechanism of the analog electronic timepiece 1 detects an overlapping state of transmission holes (detected portions) provided in a plurality of gears (hour hand wheel 27, minute hand wheel 25, second hand wheel 20, intermediate wheel 23). A detection unit 13 is provided. The detection unit 13 includes a light emitting element 31 that emits light when electrically driven, and a light receiving element 32 that receives light and outputs a detection signal. The light emitting element 31 is, for example, a light emitting diode, and the light receiving element 32 is, for example, a phototransistor. In this embodiment, the light emitting element 31 and the light receiving element 32 are arranged on the dial plate 5 side and the back cover side so as to face each other with the plurality of gears interposed therebetween. When the transmission holes formed in the plurality of gears (the hour hand wheel 27, the minute hand wheel 25, the second hand wheel 20, and the intermediate wheel 23) overlap at the detection position P, the light of the light emitting element 31 passes through the transmission hole and is received. It reaches the element 32 and is detected. On the other hand, if the transmission holes formed in the plurality of gears do not overlap at the detection position P, the light of the light emitting element 31 is blocked by the gear and does not reach the light receiving element 32 so that it is detected. .

  The detection position P is set in the direction of 12:00 on the dial 5 from the center of the second hand wheel 20, the minute hand wheel 25, and the hour hand wheel 27.

  FIG. 4 shows a front view of a second hand wheel to which the second hand is fixed.

  As shown in FIG. 4, the second hand wheel 20 is formed with a circular first transmission hole 21 a at a position overlapping the second hand 2, for example. Thereby, when the second hand 2 indicates 0 second, the first transmission hole 21a of the second hand wheel 20 overlaps the detection position P. In addition, the second hand wheel 20 is formed with two second long holes 21b and a third long hole 21c that are long in the circumferential direction on the same radius as the transmission hole 21a. A first light shielding portion 21d is provided between the first transmission hole 21a and the second long hole 21b, and a second light shielding portion 21e is provided between the first transmission hole 21a and the third long hole 21c. The part 21d and the second light-shielding part 21e are set to different lengths. Further, the third light shielding part 21f between the second long hole 21b and the third long hole 21c is set at a position of 180 degrees with respect to the position of the first transmission hole 21a. Specifically, the first light-shielding portion 21d overlaps the detection position P while the second hand 2 points to 1 second to 7 seconds, and the second long hole 21b is detected while the second hand 2 points to 8 seconds to 28 seconds. The third light-shielding portion 21f overlaps with the detection position P while the second hand 2 points to 29 seconds to 31 seconds, and the third long hole 21c overlaps with the detection position while the second hand 2 points to 32 seconds to 50 seconds. The second light-shielding portion 21e overlaps with the detection position P while the second hand 2 indicates 51 seconds to 59 seconds.

  By forming the second hand wheel 20 in this way, when the second hand 2 points to an even second, when the portion overlapping the detection position P is any one of the light shielding portions 21d, 21e, 21f, the second hand wheel 20 from that state. Is rotated 180 degrees, the detection hole P is always overlapped with the transmission hole 21a or the long holes 21b and 21c.

  FIG. 5 shows a front view of the minute hand wheel and the intermediate wheel to which the minute hand is fixed.

  As shown in FIG. 5, one second transmission hole 28 is formed in the minute hand wheel 25. For example, the second transmission hole 28 is formed at a position overlapping the minute hand 3 and on a radius overlapping the detection position P. The intermediate wheel 23 is also formed with one circular fourth transmission hole 30. The fourth transmission hole 30 is also formed on a radius that overlaps the detection position P. The minute hand wheel 25 and the intermediate wheel 23 rotate in conjunction with each other. When the second transmission hole 28 of the minute hand wheel 25 overlaps the detection position P, the fourth transmission hole 30 of the intermediate wheel 23 is also at the detection position P. Combined to overlap.

  FIG. 6 shows a front view of the hour hand wheel to which the hour hand is fixed.

  As shown in FIG. 6, the hour hand wheel 27 includes, for example, a total of 11 positions at a position overlapping the hour hand 4 on the radius overlapping the detection position P, and at a position where the central angle is separated by 30 degrees on the same radius. A third transmission hole 29 is formed. Each of these eleventh third transmission holes 29 is a circular hole, and each hour on the hour hand 4 from 0 o'clock to 10 o'clock (0:00, 1:00 ... 10:00) One of the transmission holes 29 is overlapped with the detection position P. A portion that overlaps the detection position P when the hour hand 4 points to 11:00 is a fourth light shielding portion 29a, and no transmission hole is formed.

  Due to the configuration of the second transmission hole 28 of the minute hand wheel 25, the third transmission hole 29 of the hour hand wheel 27, and the fourth transmission hole 30 of the intermediate wheel 23 as described above, the hands 2 to 4 are 11:00 and 23:00. 1st to 4th transmission holes 21a and 28 in the state indicating each hour (excluding 0:00, 1:00 ... 10:00, 12:00 ... 22:00) 29, 30 overlap at the detection position P. On the other hand, since the fourth light-shielding portion 29a of the hour hand wheel 27 comes to the detection position P at each hour at 11:00 and 23:00, the first to fourth transmission holes 21a, 28, 29, and 30 overlap at the detection position P. Does not occur.

  Further, due to the configuration of the second transmission hole 28 of the minute hand wheel 25, the third transmission hole 29 of the hour hand wheel 27, and the fourth transmission hole 30 of the intermediate wheel 23, the long hole 21b of the second hand wheel 20, While the minute hand 3 and the hour hand 4 are rotated for 12 hours in a state where 21c is arranged at the detection position P, the detection unit 13 detects the open / closed state of the transmission hole while counting the amount of rotation. Overlap of the second to fourth transmission holes 28 to 30 is detected every rotation for one hour excluding the hour, so that the position of the minute hand 3 can be specified. In addition, the overlap of the second to fourth transmission holes 28 to 30 is not detected only once out of the rotation for 12 hours, so that the position of the hour hand 4 can be specified.

  FIG. 7 is a block diagram showing a circuit configuration of the analog electronic timepiece.

  The analog electronic timepiece 1 of this embodiment has the following circuit configuration. That is, the watch movement 8 including the first stepping motor 17 and the second stepping motor 22 and driving the hands 2 to 4 and the gears (second hand wheel 20, minute hand wheel 25, intermediate wheel 23, hour hand wheel 27) A detection unit 13 that detects the overlapping state of the transmission holes 21a, 28, 29, and 30, a CPU (Central Processing Unit) 35 that performs overall control of the timepiece, and a ROM (Read Only Memory) that stores control programs and control data 36), a RAM (Random Access Memory) 37 as a storage means for providing a working memory space to the CPU, an oscillation circuit 38 and a frequency dividing circuit 39 for forming a timing signal for timing, and a timing signal A time counting circuit (time counting means) 47 that counts the current time, a power supply unit 40 that supplies power to each unit, and a standard radio wave that includes time information are received and received. An antenna 41 and a detection circuit 42 as a non-time receiving means, switching unit for performing an operation input from the outside has a plurality of operation switches (operation unit) 44 and the like.

  Among these configurations, the CPU 35, the ROM 36, the RAM 37, the detection unit 13, the switch unit 44, and the time counting circuit 47 constitute a pointer position detection / correction device.

  The CPU 35 displays the time by driving the timepiece movement 8 based on signals from the frequency dividing circuit 39 and the time counting circuit 47 according to the control program stored in the ROM 36 and rotating the hands 2 to 4. In addition, the CPU 35 drives the detecting unit 13 to perform needle position detection and needle correction processing for correcting the needle position, or sampling for investigating a tendency of a time zone in which the needle position is detected when the needle position is not in a normal position. And so on. Details of each of these processes will be described later.

  In addition, the CPU 35 executes various processes according to the operation input from the switch unit 44, or when the predetermined time has been reached, or when there is a designated operation input from the switch unit 44, the detection circuit 42. Thus, the time information of the standard radio wave is acquired, and the radio wave reception process for correcting the time measured by the time counting circuit 47 to the current time is also performed.

  In the RAM 37, a sampling flag (SF) 37a indicating whether or not it is in the investigation period for investigating the tendency of the timing detected when the pointer is not in the normal position by the needle position detection, and the flag value by the above sampling processing are stored. A detection flag registration table 37b to be registered is stored.

  FIG. 12 shows a data chart showing an example of the detection flag registration table.

  In the detection flag registration table 37b, for example, detection flag values indicating whether or not to perform needle position detection are registered for a plurality of timings in one day. In this embodiment, since the timing at which the needle position detection can be performed is set every hour, 24 detection flags corresponding to each hour can be registered in the detection flag registration table. When the value is “1”, the detection flag indicates that the needle position detection is performed at the corresponding time, and when the value is “0”, the needle position detection is not performed at the corresponding time.

  The detection unit 13 constitutes a hand position detection unit, and includes a light emitting element 31 such as a light emitting diode and a light receiving element 32 such as a phototransistor as described above, and a plurality of gears (hour hand) at the detection position P. The wheel 27, the minute hand wheel 25, the second hand wheel 20, and the intermediate wheel 23) are arranged to face each other. Whether or not the transmission holes of the hour hand wheel 27, the minute hand wheel 25, the second hand wheel 20, and the intermediate wheel 23 are overlapped at the detection position P by causing the light emitting element 31 to emit light and determining the light reception signal of the light receiving element 32. Whether or not the second hand 2 and the hour / minute hands 3 and 4 are in a predetermined position can be determined.

  The frequency dividing circuit 39 generates a 1 second signal 1 s at a 1 second period and outputs it to the CPU 35 and the time counting circuit 47.

  The time counting circuit 47 counts the current time by counting the 1-second signal 1s from the frequency dividing circuit 39. The time counting circuit 47 counts the 1-second signal 1s 10 times from the 0-second time point of the timekeeping time and outputs a 10-second carry signal 2s to the CPU 35 every time the 10-second digit value is updated. Each time 1s is counted 3600 times and the hour digit value is updated, the hour carry signal 1h is output to the CPU 35. The time counting circuit 47 is configured to be able to exchange time data with the CPU 35. For example, when the CPU 35 acquires time information from a standard radio wave, the CPU 35 transmits time data based on the time information to the time counting circuit 47. This error is corrected when there is an error in the timekeeping time. Further, if it is necessary for the CPU 35 to check the current time, the time data can be read from the time counting circuit 47 and checked.

  Next, the operation of the analog electronic timepiece 1 having the above configuration will be described.

<1 second signal input processing>
FIG. 8 shows a flowchart of the 1-second signal input process executed by the CPU 35.

  First, the 1-second signal input process executed by the CPU 35 based on the input of the 1-second signal 1s from the frequency dividing circuit 39 will be described. In this process, the display contents of the time are updated by driving the second hand 2 and the hour / minute hands 3 and 4 according to the time count.

  When the 1 second signal 1s is input to the CPU 35 and this process is started, the CPU 35 first supplies a pulse signal to the first stepping motor 17 of the timepiece movement 8 to drive the second hand 2 by 1 step (rotate 6 °). (Step S1), the value of the second hand position in the second hand position storage unit provided in the RAM 37 to store the rotational position of the second hand 2 is incremented by "+1" (Step S2).

  Subsequently, the input of the 10-second carry signal 1h from the time counting circuit 47 is confirmed (step S3). If there is no input of the 10-second carry signal 1h, the 1-second signal input process is terminated as it is.

  On the other hand, if a 10-second carry signal 1h is input, the CPU 35 supplies a pulse signal to the second stepping motor 22 of the timepiece movement 8 to drive the minute hand 3 one step (1 ° rotation) (step S4). Since the hour hand 4 rotates in conjunction with the minute hand 3, the corresponding rotation amount is driven by the driving in step S4. Subsequently, the CPU 35 increments the value of the hour / minute hand position in the hour / minute hand position storage unit provided in the RAM 37 in order to store the rotational positions of the minute hand 3 and hour hand 4 (step S5). Then, this one second signal input process is terminated.

  By such 1-second signal input processing, the second hand 2 and the hour / minute hands 3 and 4 are step-driven with the passage of time, and the display content of the time on the dial 5 is updated. .

<Time carry signal input processing>
FIG. 9 shows a flowchart of the time carry signal input process executed by the CPU 35.

  The hour carry signal input process is a process executed by the CPU 35 every time the hour carry signal 1h is input from the time counting circuit 47. In this embodiment, the transmission holes 21a, 28 to 30 of a plurality of gears (second hand wheel 20, intermediate wheel 23, minute hand wheel 25, hour hand wheel 27) overlap each other at the detection position P every hour except 11:00 and 23:00. Thus, the detection unit 13 can detect this state. Therefore, at this time, in the carry signal input processing, processing related to the needle position detection is performed.

  When the hour carry signal input process is started, the CPU 35 first checks the value of the sampling flag (SF) 37a in the RAM 37 to determine whether it is zero (step S11). Since the value of “1” is set for the sampling flag 37a during the investigation period in which the sampling process is performed, if it is not zero, the process proceeds to a sampling process (step S12) described in detail later. Then, after executing the sampling process, the carry signal input process is terminated at this time. On the other hand, if the value of the sampling flag 37a is “0”, it means that it is not in the investigation period, and the process proceeds to the next step S13 in order to execute the hand position detection process.

  When the process proceeds to step S13, in order to determine whether or not to perform the hand position detection, the value of the detection flag corresponding to the current time is read from the detection flag registration table 37b of the RAM 37, and whether or not the value is “1”. (Step S13). If the flag value is not “1”, this means that the hand position detection at this timing is not executed, and thus the time carry signal input process is terminated. On the other hand, if the value of the detection flag is “1”, this means that the needle position detection at this timing is executed, and the routine proceeds to the needle position detection process from step S14. The detection operation control means is configured by the processing in step S13.

  When the process proceeds to the hand position detection process from step S14, the CPU 35 sequentially causes the light emitting element 31 of the detection unit 13 to emit light (step S14), and whether the current time is 11:00 or 23:00 from the time measurement data of the time counting circuit 47. Is determined (step S15). If it is 11:00 or 23:00, it is determined in step S17 whether or not the light receiving element 32 is not receiving light, and if it is any other time, the light receiving element 32 receives light in step S16. It is determined whether or not there was.

  The reason for discriminating between 11:00 and 23:00 is that the transmission holes 21a, 28 to 30 of a plurality of gears (second hand wheel 20, intermediate wheel 23, minute hand wheel 25, hour hand wheel 27) are correct every time except 11:00 and 23:00. While sometimes overlapping at the detection position P, the light-shielding portion 29a of the hour hand wheel 27 overlaps the detection position P and closes the transmission hole at each hour at 11 o'clock and 23 o'clock, so that each of these states can be detected. This is to determine whether or not.

  If the determination result of step S16 or step S17 is YES, it is determined that the hand position is normal, and the carry signal input process is terminated at this time. On the other hand, if the determination result in step S16 or step S17 is NO, it is determined that the needle position is in the wrong position, and the process proceeds to the needle correction process (pointer position correction means) in step S18. Then, after completing the hand correction process, the carry signal input process is terminated.

  By the time carry signal input process as described above, the sampling process is executed during the investigation period at a predetermined detection time (every hour), and when other than the investigation period, the detection flag registration table 37b. Depending on the value of the detection flag at each timing, the needle position detection process is executed or not executed.

<Sampling process>
FIG. 10 shows a flowchart of the sampling process executed in step S12 of FIG.

  This sampling process is a process for determining the timing of executing the needle position detection in the normal mode after the investigation period based on the investigation result by examining the tendency of the timing at which the needle position is shifted by detecting the needle position during the investigation period. . The investigation period is started by a sampling switch-on process described later, and is canceled after one week.

  An investigation means is configured by steps S21 to S24 of this sampling process, and an operation timing determination means is configured by step S26.

  When shifting to the sampling process, first, the CPU 35 causes the light emitting element 31 of the detection unit 13 to emit light (step S21). Next, it is determined from the time measurement data of the time counting circuit 47 whether the current time is 11:00 or 23:00 (step S22). If it is 11:00 or 23:00, it is determined whether or not the light receiving element 32 is not receiving light in step S24. If it is any other time, the light receiving element 32 receives light in step S23. It is determined whether or not there was.

  If the needle position deviates from the normal position, the process branches to the NO side in the determination process of step S23 or step S24. Therefore, in step S25, a needle correction process for correcting the needle position to the normal position is executed. To do.

  Further, when the needle correction process is completed, it is detected that the needle position is not in a normal position. Therefore, in order to determine this timing as a timing for executing the needle position detection in the normal mode, the current time in the detection flag registration table 37b is determined. The value of the detection flag corresponding to is set to “1”. Then, the process proceeds to next Step S27.

  On the other hand, when the needle position is in a normal position and the process branches to YES in the determination process of step S23 or step S24, the process proceeds to the next step S27 as it is.

  After proceeding to step S27, in order to confirm the progress of the investigation period, it is confirmed whether or not this sampling process has been executed 24 × 7 times (for one week). If not yet, the sampling process is terminated as it is. On the other hand, if the execution for one week is completed, the sampling flag 37a of the RAM 37 is set to “0” in order to end the investigation period. And this sampling process is complete | finished.

  By such sampling processing, the hourly needle position detection is performed during the one week investigation period, and the timing at which it is detected that the needle position has shifted even once is the normal mode after the investigation period. As a timing for executing the needle position detection, the value of the detection flag is set to “1”. As for the timing at which the needle position has not been detected once during the survey period, the value of the detection flag is set to “0” as the timing at which needle position detection is not executed in the normal mode after the survey period. It has come to be.

  In the sampling process of FIG. 10, there is no step for setting the detection flag to “0”, but in the sampling switch-on process described below, all flag values in the detection flag registration table 37b are initialized to “0”. Therefore, the value of the detection flag that has not been set to “1” in the sampling process is set to “0”.

  For example, in the example of the detection flag registration table 37b shown in FIG. 12, “00:00” to “7:00”, “9:00”, “12:00”, “16: At each time of “00”, “18:00”, “20:00” to “23:00”, it is not detected that the needle position has shifted once, so the needle position detection is not executed in the normal mode. As a timing, the value of the detection flag is set to “0”. In addition, since it has been detected that the needle position is deviated at least once during the investigation period at other hourly times, the value of the detection flag is set to “1” as the timing for executing the needle position detection in the normal mode. Yes.

<Sampling switch-ON processing>
FIG. 11 shows a flowchart of the sampling switch-on process executed by the CPU 35.

  This sampling switch-on process is started, for example, when a user performs a predetermined operation input via the switch unit 44. When the sampling switch-on process is started, the CPU 35 sequentially sets “1” to the sampling flag 37a of the RAM 37 (step S31), and sets the detection flag values at all timings in the detection flag registration table 37b to “0”. To "" (step S32). Then, this process ends.

  By setting the value of the sampling flag 37a to “1”, a one-week investigation period is started, and sampling processing is executed from the next time carry signal input processing. In addition, the detection flag values indicating the timing at which the needle position detection is executed and the timing at which it is not executed in the normal mode are all cleared so that a new flag value can be set.

  That is, during the survey period in which the user performs a predetermined operation via the switch unit 44 by this sampling switch-on process, and investigates the timing at which the needle position tends to be detected by the needle position detection. It is possible to newly set the timing for executing the needle position detection in the normal mode and the timing for non-execution in the normal mode.

<Needle correction processing>
FIGS. 13 and 14 show a flowchart of a subroutine process of the needle correction process executed in step S18 of FIG. 9 and step S25 of FIG.

  In this needle correction process, when it is determined that the needle position is not correct, the plurality of hands 2 to 4 are fast-forwarded while detecting the needle position, thereby confirming the positions of the plurality of hands 2 to 4 that are lost, Thereafter, the hands 2 to 4 are corrected to the correct positions.

  When the process proceeds to the hand correction process, first, a pulse signal for moving the second hand 2 to the even second position is supplied to the first stepping motor 17, and when the second hand 2 is at the odd second position, the second hand 2 moves to the even second position. (Step S31).

  In the hand correction process, the position of the second hand wheel 20 is detected only at even second positions every two steps. In the two-pole stepping motor, which of the two stationary positions of the rotor corresponds to an even number of seconds and which corresponds to an odd number of seconds is determined in advance by the polarity of the supplied pulse. Therefore, by supplying the first stepping motor 17 with a polarity pulse corresponding to even seconds, the rotor 17c is brought into a stationary state for even seconds.

  Next, the CPU 35 rotates the second hand 2 two steps (12 °) (step S32), causes the light emitting element 31 of the detection unit 13 to emit light (step S33), and the light receiving element 32 can receive the light of the light emitting element 31. It is determined whether or not (step S34). As a result, if light cannot be received, it is determined whether or not the second hand 2 has been rotated 60 steps (one turn) (step S35). If it has not been rotated 60 steps, the process returns to step S32, and step S32 is performed. → Step S33 → Step S34 → Step S35 → Step S32 is repeated until it is determined in step S34 that light has been received or it is determined in step S35 that light has been rotated by 60 steps.

≪Only the position of the second hand 2 is inaccurate and the positions of the hour and minute hands 3 and 4 are accurate≫
If only the second hand 2 is inaccurate and the hour / minute hands 3 and 4 are accurate, it is determined that there is light reception in step S34 during 60 steps of the second hand 2, that is, one round, so in the determination process in step S34, step S36 Then, the correction process for only the second hand 2 is executed.

  When the process proceeds to step S36, first, the second hand 2 is rotated by 2 steps (12 °) (step S36), and the light emitting element 31 of the detection unit 13 is caused to emit light (step S37). (Step S38), if it is not non-light-receiving after four consecutive light receptions, it is determined whether or not 60 steps, that is, whether or not the second hand 2 has been driven once (step S39). Return to S36.

  The reason for detecting the light reception after four consecutive non-light receptions is that the second hand wheel 20 has a second light shielding portion 21e formed at a portion overlapping the detection position P between 51 seconds and 59 seconds, and is detected at 00 seconds. Since the circular first transmission hole 21a is formed at the position overlapping with the position P, no light is received in the four consecutive steps in which the second hand 2 is rotated to the positions of 52 seconds, 54 seconds, 56 seconds, and 58 seconds. This is because light is received at the step rotated to the position of 00 seconds.

  Then, Step S36 → Step S37 → Step S38 → Step S39 → Step S36 is repeated, and when light reception after four consecutive non-light receptions is detected, the current second hand 2 position is 00 seconds, so the second hand position storage section The value of the second hand position is reset to “0” (step S40). As a result, the second hand 2, the minute hand 3, and the hour hand 4 are in accurate positions, and the process proceeds to the subsequent step S41.

  In step S41, since the accurate positions of the hands 2 to 4 are found in the preceding stage, the positions of the hands 2 to 4 are fast-forwarded to the current time counted by the time counting circuit 47. That is, a process of supplying one drive pulse to the first stepping motor 17 to rotate the second hand 2 by one step and “+1” the value of the second hand position storage unit is performed. The second hand 2 is moved to the second position of the current time by repeating until it coincides with the second. Similarly, a process of supplying one drive pulse to the second stepping motor 22 to rotate the minute hand 3 by one step and “+1” the value of the hour / minute hand position storage unit, and setting the value of the hour / minute hand position storage unit to the hour The hour hand 4 and the minute hand 3 are moved to the hour / minute position of the current time by repeating until the data converted into the minute value coincides with the hour / minute at the time of the movement destination.

  Note that if it is determined in step S38 that the second hand 2 has been driven 60 steps in step S39 before the detection of light reception after four consecutive non-light receptions is determined, an error process is performed (step S42). ).

≪When the position of hour and minute hands 3 and 4 is incorrect≫
If the position of the hour / minute hands 3 and 4 is inaccurate, when the above-described step S32 → step S33 → step S34 → step S35 → step S32 is repeated, Since it is not determined that the light has been received in step S34, the process branches to step S51 (FIG. 14) in the branch process of step S35, and the process proceeds to a process of detecting the positions of the minute hand 3 and the hour hand 4.

  When branching to step S51, first, the CPU 35 moves the minute hand 3 to the even step position (step S51). Similarly to the second hand 2, the minute hand 3 also determines which of the two stationary positions of the rotor of the two-pole stepping motor is an even step and which is an odd step based on the polarity of the drive pulse. By supplying a pulse having a polarity corresponding to a step, the rotor 22c is brought into a stationary state of even steps.

  Next, the minute hand 3 is rotated two steps (2 °) (step S52), the light emitting element 31 is caused to emit light (step S53), and it is determined whether or not the light receiving element 32 has received the light from the light emitting element 31 (step S53). Step S54). As a result, if light cannot be received, it is determined whether or not it has been rotated by 720 steps (step S55). If it has not been rotated by 720 steps, the process returns to step S52, and step S52 → step S53 → step S54 → step. S55 → Step S52 is repeated until it is determined in step S54 that light has been received or it is determined in step S55 that the light has been rotated 720 steps.

  The reason for determining whether or not step 720 has been rotated in step S55 is that the hour hand wheel 27 is formed with a transmission hole 29 at a position overlapping the detection position P at every hour from 0:00 to 10:00. Since the transmission hole 29 is not formed at a position overlapping with the detection position P at noon and is the fourth light shielding portion 29a, the light receiving element 32 receives two hours after receiving light through the transmission hole 29 corresponding to 10:00. By rotating the minute (360 × 2 steps) step, the next light reception cannot be performed until the transmission hole 29 corresponding to 0 o'clock overlaps the detection position P, that is, light reception cannot be performed for a maximum of 719 steps. Therefore, unless it is rotated 719 steps, it cannot be determined that the transmission holes 28 and 29 of the hour hand wheel 27 and the minute hand wheel 25 are overlapped at the detection position P during that time.

  On the other hand, when step S52 → step S53 → step S54 → step S55 → step S52 is repeated, if it is determined in step S55 that the rotation has been performed 720 steps, any light shielding portion of the second hand wheel 20 is at the detection position P. In this case, it can be determined that the transmission holes 28 and 29 of the hour hand wheel 27 and the minute hand wheel 25 cannot be detected. Therefore, in this case, the second hand wheel 20 is rotated by 30 steps (180 °). (Step S56), the transmission hole 21a or the long holes 21b and 21c of the second hand wheel 20 are overlapped with the detection position P. Then, Step S57 → Step S58 → Step S59 → Step S60 → Step S57, which is the same processing as Step S52 to Step S55, is repeated.

  If it is detected in step S54 or step S58 that the light receiving element 32 has received light, second hand zeroing processing for moving the second hand 2 to the 00 second position is performed (step S61). This second hand zero return process includes the above-described step S36, step S37, step S38, step S39, step S40 and step S42.

  When the return of the second hand 2 is completed, the minute hand 3 is then rotated two steps (2 °) (step S62), and the light emitting element 31 of the detector 13 is caused to emit light (step S63). It is determined whether or not light reception is detected (step S64). If light reception after 359 consecutive non-light receptions is not detected, it is determined whether or not 4320 steps, that is, whether the hour hand 4 has been driven for 12 hours (step S65), If not, the process returns to step S62.

  Here, the reason for detecting the light reception after 359 consecutive non-light receptions is that the hour hand wheel 27 is formed with a transmission hole 29 at a position overlapping the detection position P at every hour from 00 o'clock to 10 o'clock. Since the transmission hole 29 is not formed at the position overlapping the detection position P at the noon and there is the fourth light shielding portion 29a, the light receiving element 32 receives light through the transmission hole 29 corresponding to 10 o'clock and then receives two hours (360). In order to detect this, the number of steps of (× 2 steps) is rotated and no light is received until the transmission hole 29 corresponding to 0 o'clock overlaps the detection position P, which occurs only once during 12 hours of driving. is there. Since the detection is performed every two steps, the number of times of detection while the transmission hole 29 corresponding to 10:00 overlaps with the detection position P and receives light and the transmission hole 29 corresponding to 10:00 overlaps with the detection position P is received. Since this is the 360th time, light reception after 359 consecutive non-light receptions is detected.

  Step S62 → Step S63 → Step S64 → Step S65 → Step S62 is repeated, and when light reception after 359 consecutive non-light receptions is detected, the current hour and minute hands 3 and 4 positions are at 00:00:00. The value in the minute hand position storage unit is reset to “0” (step S66). Then, the process proceeds to step S 41, and the second hand 2, the minute hand 3 and the hour hand 4 are fast-forwarded to the current time counted by the time counting circuit 47.

  On the other hand, when step S57 → step S58 → step S59 → step S60 → step S57 is repeated, if it is determined in step S59 that the rotation has been performed 720 steps, and step S62 → step S63 → step S64 → step S65 → When step S62 is repeated, if it is determined in step S65 that the hour / minute hands 3 and 4 have been driven for 12 hours (step 4320), an error is detected and the process proceeds to error processing.

  Even if it is detected by the needle correction process as described above that the needle positions of the hands 2 to 4 are inaccurate, the hands 2 to 4 can be fast-forwarded to return to the correct position.

  As described above, according to the pointer position detection / correction device and the analog electronic timepiece 1 of this embodiment, the timing at which the hand position is actually deviated during a predetermined investigation period by the sampling process is obtained. Is registered as the timing at which the needle position detection is executed in the normal mode. For example, in an environment where the needle position is rarely shifted, the number of times of the needle position detection in the normal mode is reduced, and the power consumption can be reduced. . Also, in an environment where needle position deviation is relatively likely to occur, needle position detection is performed only at timings at which needle position deviation tends to occur, so the number of ineffective needle position detections is reduced. The power consumption can be reduced.

  In addition, since the above sampling processing is executed over a plurality of days (for example, 7 days) every unit time (1 hour) in which the needle position detection can be executed once, the timing at which the needle position tends to be shifted is compared. Can be investigated accurately.

  In addition, since the misalignment of the needle position does not occur easily, if the misalignment of the needle position is detected even once in the sampling process, the detection flag of the timing is set to “1” to detect the needle position. Since the detection flag is set to “0” and the needle position detection is not performed only when the needle position deviation is not detected even once in the sampling process, The timing setting for executing or not executing the needle position detection in the mode becomes more appropriate.

  In addition, whether or not the hand position is shifted is determined by detecting the transmission holes 21a and 28 to 30 of a plurality of gears (second hand wheel 20, intermediate wheel 23, minute hand wheel 25, hour hand wheel 27) at a detection position P at a predetermined time. Since it is performed by detecting whether or not they overlap with each other by a photo interrupter, accurate needle position detection can be performed with a relatively simple configuration.

  In addition, since the shift to the investigation period in which the sampling process is executed can be performed by operating the switch unit 44, the environment changes and the needle position shifts, or vice versa. When there is no environment that causes the occurrence of the occurrence of sampling, it is possible to newly set the timing at which the needle position detection is executed or not executed by executing the sampling process by the user's operation.

  In addition, since the timing for executing the needle position detection in the normal mode and the timing for not performing the needle position detection are determined based on the value of the detection flag provided for each timing, simple control processing is performed. Thus, execution or non-execution control of the needle position detection can be performed reliably.

[Second Embodiment]
FIG. 15 shows a flowchart of the sampling process of the second embodiment, and FIG. 16 shows a flowchart of the sampling switch-on process of the second embodiment. FIG. 17 shows an example of the detection result data table used for the sampling process of the second embodiment, and FIG. 18 shows the contents of the detection flag registration table set based on the detection result data table of FIG. An example is shown.

  The analog electronic timepiece 1 of the second embodiment is different from the first embodiment in the content of the sampling process for determining the timing for executing or not executing the hand position detection, and the other configurations are the same as in the first embodiment. belongs to. Therefore, the description of the same configuration is omitted.

  In the second embodiment, a detection result data table 37c as shown in FIG. In the detection result data table 37c, heading items from the first day to the seventh day of the investigation period (seven days) in which the sampling process is performed in the row direction are set, and each of the even time for executing the sampling process in the column direction is set. The heading item at the hour (0:00, 2:00, to 22:00) is set. And the result of the sampling process performed at the date and time corresponding to each row and each column can be individually registered. In the RAM 37, the heading item of the detection result data table may be omitted and stored.

  Specifically, if it is detected that the needle position is shifted in the sampling process performed at Y0: 00 on the Xth day (even hour on the hour), the data item (storage unit) of the corresponding row and column If a value of “1” is registered in the column and it is detected that the needle position is normal, a value of “0” is registered in the data item (storage unit) of the corresponding row and column. Such data values can be registered from the first day to the seventh day corresponding to the hour of each even hour.

  Further, the total of data values from the first day to the seventh day of each row is recorded in the detection result data table 37c.

  In the sampling process according to the second embodiment, the above-described detection result data table 37c is used to investigate whether or not the needle position is detected as being shifted by detecting the needle position at each even number over a one-week investigation period. At every hour on the hour. Further, the timing for executing the needle position detection in the normal mode is determined according to the number of times that it is detected that the needle position is deviated at the time of each even hour throughout the investigation period. Next, details of the sampling process will be described with reference to a flowchart.

<Sampling process>
As shown in the flowchart of FIG. 15, when shifting to the sampling process at the hour, the CPU 35 first determines whether or not the current time is an even time from the time measurement data of the time counting circuit 47 (step S71). If it is not an even number, the needle position is not detected in the sampling process, so this sampling process is terminated. On the other hand, if it is an even number, in order to detect the hand position, the light emitting element 31 is caused to emit light (step S72), and it is determined whether or not the light receiving element 32 has received light (step S73). As a result, if the light can be received, the needle position is normal, and the process proceeds to the next step S76.

  On the other hand, if there is no light reception, the needle position is deviated. Therefore, a needle correction process for correcting the needle position (step S74) is executed, and thereafter, at the current time on day D of the detection result data table (FIG. 17). A value “1” indicating that the needle position has shifted is registered in the corresponding storage unit. Then, the process proceeds to next step S76. The value of variable D represents the number of days that have elapsed since the start of the one-week survey period, and the initial value is set to “1”.

  In step S76, it is determined whether the needle position detection processing in steps S72 and S73 has been executed for 12 times, that is, for one day. If not, the sampling processing is terminated as it is, but if it has been executed for 12 times, the flow proceeds to step S77. To do.

  In step S77, it is determined whether or not the value of the variable D representing the elapsed days is “7” as the end days. If not, the value of the variable D is incremented by “1” in step S78 and the data value of the elapsed days is updated. To do. And this sampling process is complete | finished. On the other hand, if “7”, the process proceeds to step 79 in order to finish the sampling process.

  That is, by the above steps S76, S77, and S78, the value of the variable D representing the elapsed days is updated every time the needle position is detected 12 times a day from the start of the survey period in which the sampling process is executed. Further, at the end of the seventh day, which is the end of the investigation period, the process proceeds to an end process (steps S79 to S82) for determining the timing of execution and non-execution of the needle position detection in the normal mode.

  When the process proceeds to step S79, first, since the survey period ends, the sampling flag (SF) is set to “0”.

  Next, the data values in the detection result data table 37c (FIG. 17) are summed for each timing (step S80), and for the timing where the total value is one, the value of the detection flag corresponding to the timing is set to “1”. It is determined and registered in the detection flag registration table 37b (step S81). For example, in the example of the detection result data table 37c of FIG. 17, the total value of “4:00, 6:00, 12:00, 18:00, 20:00, 22:00” is “1”. In the detection flag registration table 37b of FIG. 18, the detection flags of “4:00, 6:00, 12:00, 18:00, 20:00, 22:00” are set to “1”.

  Further, for the timing when the total value is two or more times, the value of the detection flag corresponding to the timing is determined to be “1”, and the value of the detection flag corresponding to the timing one hour before the timing is also “1” Are registered in the detection flag registration table 37b (step S82). For example, in the example of the detection result data table 37c of FIG. 17, since the total value of “10:00, 14:00, 16:00” is “2” or more, these are detected in the detection flag registration table 37b of FIG. The detection flag “10:00, 14:00, 16:00” is set to “1”. Further, the detection flags of “9:00, 13:00, 15:00” one hour before each of these are also set to “1”.

  Note that the condition for setting the detection flag one hour ago to “1” in this way is not limited to the case where the total value is 2 times or more. For example, the total value is 3 times or more or 4 times or more. It is also possible to change to. Furthermore, when the number of times is large, not only the detection flag one hour ago but also the detection flag corresponding to the time two hours ago may be set to “1”, or one hour or two hours later It is also possible to set the detection flag corresponding to the time to “1”.

  If the detection flag is set in step S82, the sampling process is terminated. After the sampling process is completed, the sampling flag (SF) 37a is set to “0” in step S79, so that the normal mode is restored and the detection flag value is set to “1” in the detection flag registration table 37b. The hand position detection is performed only at the set time.

<Sampling switch-ON processing>
In the second embodiment, since the detection result data table 37c and the variable D representing the number of days elapsed in the survey period are used in the above-described sampling process, the contents of the sampling switch-on process for starting the survey period are also included in it. Corresponding steps are added.

  That is, in the sampling switch-on process of the second embodiment, as shown in FIG. 16, the sampling flag (SF) 37a is set to “1” (step S91), or all flag values in the detection flag registration table 37b are set. In addition to initializing to “0” (step S92), all data values in the detection result data table 37c are initialized to “0” (step S93), and the value of the variable D of elapsed days is set to “1”. (Step S94).

  As described above, according to the pointer position detection / correction device and the analog electronic timepiece 1 of the second embodiment, the sampling process of FIG. 15 is performed every 2 hours (every twice the unit time in which the hand position can be detected once). Since the probe needle position detection is performed, the number of needle position detections during the investigation period can be reduced to further reduce power consumption.

  Further, according to the number of times the displacement of the needle position was confirmed throughout the one week investigation period, if it is once, only that timing is set as the timing for executing the needle position detection, and if it is twice or more Since the timing and the timing one hour before are set as the timing for executing the needle position detection, even if the timing for detecting the needle position for investigation is thinned, an appropriate needle position that matches the tendency of the timing at which the needle position shifts The detection time can be set.

  The present invention is not limited to the first and second embodiments, and various modifications can be made. For example, in the above embodiment, since the train wheel configuration is such that the needle position detection can be executed at every hour, the control content determines whether to perform the needle position detection or not to be executed every hour. For example, if the train wheel configuration can detect the needle position once every 30 minutes or detect the needle position at intervals of 2 hours, the needle position detection is executed or not at each timing using these as unit time. What is necessary is just to set the control content to determine whether to execute. Moreover, you may make it exclude from 11:00 and 23:00 from the timing which performs a hand position detection.

  In the above-described embodiment, the configuration in which the needle position can be detected at every hour is illustrated. However, by changing the formation position of the transmission hole of the gear and the detection position P of the detection unit 13, for example, 55 minutes per hour can be detected. It can also be a time when position detection is possible.

  Moreover, in the said embodiment, although the investigation period which performs a sampling process is set to 1 week, an investigation period can be suitably changed, such as 5 days-2 weeks. Further, the configuration of detecting the needle position is not limited to the configuration in which the transmission hole of the gear is detected by the photo interrupter.

  In addition, the detailed structure and the detailed method shown in the embodiment can be appropriately changed without departing from the gist of the invention.

DESCRIPTION OF SYMBOLS 1 Analog electronic timepiece 2 Second hand 3 Minute hand 4 Hour hand 5 Dial 13 Detection part 20 Second hand wheel 21a 1st transmission hole 21b 2nd long hole 21c 2nd long hole 25 Minute hand wheel 27 Hour hand wheel 28 2nd transmission hole 29 3rd transmission hole 31 Light Emitting Element 32 Light Receiving Element 35 CPU
37 RAM
37a Sampling flag 37b Detection flag registration table (data table)
37c Detection result data table 44 Switch unit 47 Time counting circuit

Claims (8)

Pointer position detection means for detecting whether or not the watch pointer is in a normal position;
Pointer position correcting means for correcting the position of the pointer to a normal position when the pointer position is detected by the pointer position detecting means to be not in a normal position;
Investigation means for investigating whether the pointer is detected at a normal position by operating the pointer position detection means intermittently over a predetermined investigation period;
An operation timing determination means for determining a timing for operating the pointer position detection means in accordance with a result of the investigation by the investigation means;
Detection operation control means for operating the pointer position detection means at a timing determined by the operation timing determination means after the end of the investigation period;
A pointer position detection / correction device comprising: The investigation means includes
2. The pointer position detection / correction device according to claim 1, wherein whether or not the pointer is detected to be in a normal position is determined at regular time intervals over a plurality of days. The operation timing determining means includes
The pointer position detection / correction device according to claim 2, wherein a timing at which the pointer is detected not to be in a normal position during the investigation period is determined as a timing at which the pointer position detection unit is operated. The investigation means includes
Investigate whether the guideline is detected to be in a normal position every multiple unit time over a multi-day survey period,
The operation timing determining means includes
Of the timings detected when the pointer is not in a normal position during the survey period, only the timing is used for the timing when the number of times is low, depending on the number of times detected as not being in a normal position. The timing for operating the pointer position detecting means is determined, and the timing at which the number of times is large is determined as the timing for operating the pointer position detecting means including the timing and the timing before or after the unit time from the timing. The pointer position detection / correction device according to claim 1, wherein:   The said pointer position detection means is a structure which detects whether the to-be-detected part provided in the gear interlock | cooperated with the said pointer exists in a predetermined detection position at a predetermined time, The structure of Claim 1 characterized by the above-mentioned. Pointer position detection correction device. It has an operation unit for inputting operation commands from the outside.
2. The pointer position detection / correction device according to claim 1, wherein the investigation means is activated when a predetermined operation command is input via the operation unit. Storage means for storing a data table in which flag information indicating whether or not to operate the pointer position detection means for each of a plurality of timings is provided;
The operation timing determination means sets flag information corresponding to each timing of the data table according to the determination content of whether to operate the pointer position detection means,
The pointer position detection correction device according to claim 1, wherein the detection operation control unit determines whether or not to operate the pointer position detection unit based on flag information corresponding to each timing of the data table. . Multiple pointers that display the time,
The pointer position detection and correction device according to any one of claims 1 to 7, which performs position detection and position correction of the plurality of pointers,
An analog electronic timepiece characterized by comprising:

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