JP5482181B2 - Analog electronic clock - Google Patents

Description

  The present invention relates to an analog electronic timepiece in which a plurality of hands are driven by a plurality of step motors.

  In an analog electronic timepiece that drives multiple hands with multiple stepping motors (also called stepping motors), for example, the display content can be changed from the Japanese time display to the time display of cities in the world, or the current time display can be set to an alarm set. When changing the display contents to display the time, control is performed to fast-forward a plurality of hands together.

  Further, as a prior art related to the present invention, Patent Document 1 discloses that in an analog electronic timepiece, the minute hand and the hour hand are driven by different motors, and the minute hand and the hour hand are rotated in the normal rotation direction or reversely rotated under appropriate conditions. A technique for rotating in a direction is disclosed.

JP 05-093784 A

  The two-pole stepping motor that moves the pointer controls the rotation direction to the normal rotation direction or the reverse rotation direction by changing the waveform pattern of the drive pulse, so the fastest drive speed in the forward rotation direction and the fastest drive in the reverse rotation direction. The speed is different, and the fastest drive speed in the forward rotation direction is faster than the fastest drive speed in the reverse rotation direction.

  Further, when the plurality of step motors are driven at a high speed, there is an advantage that timing control can be facilitated by driving the plurality of step motors in the same cycle, rather than driving at the respective highest speed driving speeds.

  An object of the present invention is to provide an analog electronic timepiece capable of completing fast-forwarding of a plurality of hands in a short time with easy control when a plurality of hands are fast-forwarded to a predetermined position by a plurality of stepping motors. is there.

In order to achieve the above object, the invention according to claim 1
Multiple guidelines,
A plurality of stepping motors capable of rotating in both the forward and reverse directions, each of which moves the plurality of pointers;
For each of the plurality of pointers, the movement start position of each pointer, the movement end position of each pointer, the fastest driving speed in the forward direction of each pointer that is the fastest driving speed to move in the forward direction, and the movement in the reverse direction The direction of movement of each pointer that can move from the movement start position to the movement end position in the shortest time when moving each pointer individually from the reverse maximum speed driving speed of each pointer that is the fastest driving speed First calculating means for respectively obtaining a driving speed and a moving amount;
A slowest speed extracting means for extracting the slowest slowest driving speed among the driving speeds of the hands calculated by the first calculating means;
A pointer calculated by the first calculation means that the movement direction is the forward direction and the movement amount is larger than the rotational movement amount of 180 degrees is extracted as a specific pointer, and the slowest driving speed is the reverse direction of the specific pointer. A discriminating means for discriminating whether or not the speed is equal to or lower than the fastest driving speed;
When it is determined by the determination means that the following is true, the moving direction of the specific pointer is corrected to the reverse direction, and the movement amount for moving the pointer in the reverse direction from the movement start position to the movement end position is obtained again. Means for calculating
The plurality of step motors are moved to the slowest driving speed in accordance with the moving direction and moving amount of each pointer obtained by the first calculating means and partially corrected by the second calculating means. And a movement control means for moving the plurality of hands to the movement end position of each hand,
It is an analog electronic timepiece characterized by comprising.

The invention according to claim 2 is the analog electronic timepiece according to claim 1 ,
A first storage unit that stores the forward direction fastest drive speed and the reverse direction fastest drive speed of each of the hands in correspondence with the plurality of hands,
The first calculation means includes
Information about the fastest forward direction drive speed and the fastest reverse direction drive speed is obtained from the first storage unit.

The invention according to claim 3 is the analog electronic timepiece according to claim 1 or 2,
A second storage unit that stores the number of drive steps for rotating each pointer once in correspondence with the plurality of pointers;
The discrimination means includes
It is characterized in that it is determined whether or not the movement amount is larger than a rotational movement amount of 180 degrees based on information on the number of driving steps in the second storage unit.

The invention of claim 4, wherein, in the analog electronic timepiece according to any one of claims 1 to 3,
The plurality of hands include an hour hand, a minute hand, and a second hand,
The plurality of step motors include three step motors for independently moving the hour hand, the minute hand, and the second hand, respectively.

  According to the present invention, since the plurality of hands are fast-forwarded and moved from the movement start position to the movement end position, the movement direction is corrected by the discriminating means and the second calculating means. The effect is that fast-forwarding can be performed.

It is a front view which shows the analog electronic timepiece of embodiment of this invention. It is a block diagram which shows the whole structure of the analog electronic timepiece of FIG. It is a data chart which shows an example of the drive speed data memorize | stored in ROM, and one round step number data. It is a chart which shows each parameter of the movement direction, drive speed, and movement amount of each pointer calculated and corrected by the pointer rapid feed processing, (a) is an example of each parameter obtained by initial calculation, and (b) is corrected. It is an example of each parameter finally determined through processing. It is explanatory drawing which showed the movement range which can move the direction of a forward rotation early about the minute hand, and the movement range which can move the direction of reverse rotation earlier. It is a flowchart which shows the control procedure of the needle | hook fast-forward process performed by CPU of a control part.

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

  FIG. 1 is a front view showing an analog electronic timepiece according to an embodiment of the present invention, and FIG. 2 is a block diagram showing an overall configuration of the analog electronic timepiece according to this embodiment.

  The analog electronic timepiece 1 of this embodiment drives the five hands 2 to 6 by the first to fifth step motors 21 to 25 and performs various displays such as display of time and measurement time of the stopwatch. For example, it becomes a main body of a wristwatch. The plurality of hands 2 to 6 rotate in the hour hand 2, the minute hand 3, the second hand 4 having a rotation axis in the center of the dial 10, and a small window 14 provided in the 9 o'clock direction of the dial 10. A second hand (a needle that counts the measurement time in units of 1/10 second when measuring a stopwatch) and a 24-hour hand that rotates in a small window 11 provided in the 3 o'clock direction of the dial 10 (a needle that makes a round in 24 hours) ) 6.

  As shown in FIG. 2, the analog electronic timepiece 1 includes a control unit 80 that is equipped with a CPU and performs overall control of the timepiece, a RAM 81 that provides a working memory area to the control unit 80, and a control unit 80. ROM 82 for storing a control program and control data executed by the CPU, a switch unit 90 for inputting operation signals of the operation buttons BT1 to BT4 in FIG. 1, and a timing signal designated for supplying to the control unit 80 The oscillating circuit 88, the frequency dividing / interrupt signal generating circuit 89, the first to fifth step motors 21 to 25 and the pointers 2 to 6 and the rotary motions of the first to fifth step motors 21 to 25 described above with the pointer 2 , Respectively, and a drive circuit that outputs drive pulses to the first to fifth step motors 21 to 25 based on control signals from the control unit 80, respectively. It is equipped with a 3 to 87, and the like.

  The first to fifth step motors 21 to 25 can be driven at the earliest rotational speed (pps: driving per second) due to the configuration of the motor itself, the difference in rotational torque necessary for the rotation of the corresponding hands 2 to 6, and the like. The number of steps is different. Further, since the first to fifth step motors 21 to 25 perform the control in the rotation direction according to the output pattern of the drive pulse, the fastest drive speeds in the forward rotation direction and the reverse rotation direction are also different.

  Further, the rotation of one step of the first to fifth step motors 21 to 25 is transmitted to the pointers 2 to 6 by appropriately changing the rotation angle by the wheel train mechanisms 31 to 35, so that these wheel train mechanisms 31 to 35 are transmitted. Accordingly, the rotation angle of one step of each pointer 2 to 6 is different. Accordingly, the number of drive steps of the first to fifth step motors 21 to 25 required for making the hands 2 to 6 go around is not the same.

  The frequency division / interrupt signal generation circuit 89 has a frequency divider that divides the signal of the constant frequency of the oscillation circuit 88 to generate a specified frequency signal, and controls the frequency divider signal as an interrupt signal. It supplies to the part 80. The frequency divider is configured to be able to change the frequency division ratio in accordance with a control signal from the control unit 80, whereby the frequency of the interrupt signal can be controlled from the control unit 80. This interrupt signal is also used, for example, when generating drive timings for the first to fifth step motors 21 to 25 during fast-forwarding of the hands 2 to 6.

  As a control program, the ROM 82 measures the current time and synchronizes with the timing data, and drives the necessary motors among the first to fifth step motors 21 to 25 to display the current time by the hands 2 to 6. A time display program to be operated, an operation input processing program for activating various clock functions or switching the clock operation mode based on an input signal from the switch unit 90, and a fast-pointing hand for rapidly forwarding the hands 2 to 6 to a designated position Processing programs and the like are stored. Examples of the various clock functions include a stopwatch function, an alarm time setting function, and a world time display function.

  The ROM 82 stores pointer drive speed data 82a and one-round step number data 82b as control data.

  FIG. 3 shows a data chart representing an example of the pointer driving speed data 82a and the one-step number data 82b stored in the ROM 82.

  In the pointer driving speed data 82a, as shown in a part of FIG. 3, the pointers 2 to 6 correspond to the pointers 2 to 6 (referred to as the first pointer to the fifth pointer in FIG. 3), respectively. The fastest drive speed (forward fastest drive speed) set as the fastest drive speed and the reverse fastest drive speed (fastest drive in reverse direction) set as the fastest drive speed of each pointer 2-6 in the reverse direction. Speed) are registered.

  The positive fastest drive speed is the fastest drive speed within a range in which the pointers 2 to 6 can be stably rotated in the forward rotation direction and the drive timing can be obtained relatively easily. It is set. The reverse maximum speed drive speed is the fastest drive speed within a range in which the pointers 2 to 6 can be stably rotated in the reverse direction and the drive timing can be obtained relatively easily. Are set in advance. Of the forward maximum speed and the reverse maximum speed set for one pointer, the forward maximum speed is a higher value.

  As shown in a part of FIG. 3, the one-round step number data 82 b corresponds to the pointers 2 to 6, and drives the first to third step motors 21 to 25 that are necessary for making the pointers 2 to 6 make a round. Each step number is registered. In this embodiment, the data contents are such that the hour hand 2 and the minute hand 3 make one round in 360 steps, and the second hand 4, the 1/10 second hand 5 and the 24-hour hand 6 make one round in 60 steps. Yes.

  Next, the pointer fast-forward process of the analog electronic timepiece 1 having the above configuration will be described.

  First, the point will be described. The pointer rapid feed process is a process of moving a plurality of hands 2 to 6 by rapid feed from an arbitrary movement start position to an arbitrary movement end position. The movement start position and the movement end position are given by separate control processes. For example, if the pointer fast-forward process is started to display the alarm set time from the state where the current time is displayed, the fast-forward is started. The display position of the current time is the movement start position, and the display position of the alarm set time set by the user is the movement end position. The pointer fast-forward process is a process that is called and executed in various control processes, and the movement start position and the movement end position are set to various positions by the control process of the caller.

  In the rapid pointer advance processing, when fast-forwarding a plurality of pointers 2 to 6 (not all), all the corresponding step motors (corresponding to the first to fifth step motors 21 to 25) are all Step drive at the same drive speed. However, the pointers 2 to 6 cannot be driven in the forward direction faster than the set forward maximum speed drive speed, or cannot be driven in the reverse direction faster than the set reverse maximum speed drive speed. Therefore, the hands 2 to 6 are driven in accordance with the slowest fastest driving speed among the hands 2 to 6 that are fast-forwarded simultaneously.

  The driving timing of each pointer 2 to 6 is set such that the control unit 80 sets the frequency division ratio in the frequency division / interrupt signal generation circuit 89 and the frequency that matches the drive speed specified by the frequency division / interrupt signal generation circuit 89. This is controlled by generating an interrupt signal. And the control part 80 outputs the control signal for a drive to each drive circuit 83-87 based on the input of this interrupt signal, and makes the some hands 2-8 step drive at the same drive speed substantially simultaneously. . Thus, timing control becomes easy by driving the plurality of hands 2 to 6 at the same driving speed.

  FIG. 4 is a chart showing an example of each parameter of the moving direction, the driving speed, and the moving amount of each of the pointers 2 to 6 calculated and corrected in the pointer fast-forward process. FIG. 4A is a chart showing parameters obtained by initial calculation, and FIG. 4B is a chart showing parameters obtained by correction. FIG. 5 is an explanatory diagram showing a moving range in which the forward rotation of the minute hand 3 can move faster and a moving range in which the reverse rotation can move faster.

  In the needle fast-forward process, in order to perform the drive control as described above, the control unit 80 sets the parameters of the movement direction, the movement amount, and the driving speed of each pointer 2 to 6 and the fast-forward drive of each pointer 2 to 6 is short. Decide each to finish in time.

  Therefore, first, the control unit 80 assumes that the hands 2 to 6 are individually driven, and the movement direction and the driving speed of the hands 2 to 6 that can be moved from the movement start position to the movement end position in the shortest time. And determine the amount of movement.

  As shown in FIG. 5, with the minute hand 3, for example, the forward maximum speed drive speed is 64 pps and the reverse maximum speed drive speed is 32 pps. When moving to the end position, driving in the forward rotation direction at the normal maximum speed drive speed can move faster, and when moving to the movement end position included in the movement range U2 of “240-360” steps, the reverse maximum speed It is possible to move faster by driving in the reverse direction at the driving speed. Therefore, for example, if the movement start position of the minute hand 3 is a 0 step position and the movement end position is a 190 step position, as shown in the “second pointer” row of FIG. The moving direction that can be moved in time is the normal rotation direction, the driving speed is the positive maximum speed driving speed A2, and the moving amount is 190 steps.

  Thus, for each of the plurality of pointers 2 to 6, from the movement start position of each designated pointer, the movement end position of each pointer, the pointer driving speed data 82a of the ROM 82, and the one-round step number data 82b, When individually driven, the moving direction, driving speed, and moving amount that can be moved in the shortest time are obtained. Thereby, for example, each parameter as shown in the chart of FIG. 4A is obtained. In the example of FIG. 4A, the moving direction of the hour hand 2, the minute hand 3, the second hand 4, and the 24-hour hand 6 is obtained as the normal rotation direction, and the 1/10 second hand 5 is obtained as the reverse rotation direction.

  Subsequently, the control unit 80 sets the slowest slowest driving speed among the driving speeds of the pointers obtained as described above as a driving speed (simultaneous driving speed) for fast-forwarding the plurality of hands 2 to 6 together. Extract. In the example of FIG. 4A, the slowest drive speed “A1, A2, A3, B4, A5” is the reverse fastest drive speed B4 (48 pps) of the 1/10 second hand 5. Therefore, this drive speed B4 is extracted as the slowest drive speed for driving the plurality of hands 2-6 together.

  The procedure for extracting the slowest drive speed may be such that all the parameters shown in FIG. 4A are obtained and then extracted by comparing the drive speeds, or the drive shown in FIG. 4A. Each time the speed is obtained one by one, the obtained driving speed may be compared to finally obtain the above-mentioned slowest driving speed.

  Next, when driving at the slowest drive speed, the control unit 80 determines whether there is a pointer that shortens the hand movement time when the reverse rotation direction and the normal rotation direction are switched. As shown in the range of 180-240 steps in FIG. 5, even if the rotation amount is 180 ° or more, a range that can be moved in a shorter time is generated by moving in the forward direction. This is because is faster than the reverse maximum speed drive speed. However, when the plurality of hands 2-6 are fast-driven together, the hands 2-6 are driven at the slowest driving speed. Therefore, depending on the pointers 2 to 6, it is possible to drive at the slowest driving speed in both the reverse rotation direction and the normal rotation direction, and it is shorter to change the moving direction from the normal rotation direction to the reverse rotation direction. There is a possibility that the time is included in the movement. Therefore, this is discriminated.

  In this embodiment, as a better guideline for reversing the moving direction, the moving amount exceeds the rotational moving amount of 180 °, and the reverse fastest driving speed is set to a value faster than the slowest driving speed. The target guideline is to be discriminated.

  In the example of FIG. 4A, the movement amount exceeding the 180 ° rotational movement is the “200” step set for the hour hand 2 and the “190” step set for the minute hand 3. is there. The reverse maximum speed drive speed B1 of the hour hand 2 is 96 pps, and the reverse maximum speed drive speed B2 of the minute hand 3 is 32 pps. Accordingly, the hour hand 2 is set to a value faster than the slowest drive speed B4 (48pps). Therefore, the control unit 80 determines this, and corrects the moving direction of the hour hand 2 in the reverse direction and the moving amount to 160 steps as shown in FIG. 4 (a) → FIG. 4 (b).

  And if each parameter of the moving direction of each pointer | guide 2-6, a driving speed, and a moving amount is calculated | required as mentioned above, the moving direction set to the 1st-5th step motor 21-25 with the slowest driving speed B4. To move the set amount of movement. Thereby, fast-forward processing in a short time is realized.

  For example, when the hands 2 to 6 are moved at the slowest driving speed B4 according to the parameters before correction in FIG. 4A, it takes the longest time to move the hour hand 2 in 200 steps, and the fast-forwarding time is 4 .17 seconds. On the other hand, when the hands 2-6 are moved at the slowest driving speed B4 in accordance with the corrected parameters shown in FIG. 4B, the fastest hand moving time takes the most time for the movement of the minute hand 3 in 190 steps. 3. Reduced to 96 seconds.

  Next, an example of a control procedure for realizing the above-mentioned pointer fast-forward process will be described based on the flowchart of FIG.

FIG. 6 is a flowchart of the pointer fast-forward process executed by the CPU of the control unit 80. In this flowchart, α is the number “1 to N” of the target pointers to be processed, N is the total number of target pointers to be processed, Z _{1 to} Z _N are the number of round steps of each pointer, and A _{1 to} A _N are the correct numbers of the pointers. The fastest driving speed, B _{1 to} B _N are reverse maximum speed driving speeds of the respective hands, C is a variable in which the slowest driving speed is finally written, and β _{1 to} β _N are the movement distances from the movement start position to the movement end position of each pointer. The amount of movement (number of steps) seen in the forward direction is shown.

When the pointer fast-forward process is started, first, the CPU of the control unit 80 starts from the current position (movement start position) for each pointer (first to Nth hands) to be processed among the plurality of hands 2 to 6. Movement amounts β _{1 to} β _N viewed in the forward rotation direction up to the movement position (movement end position) are calculated (step S1). Of the plurality of pointers 2 to 6, a pointer that does not need to be fast-forwarded is excluded from the processing target.

  Next, as an initial setting, the CPU of the control unit 80 sets “1” to the number α of the pointer to be calculated, and sets a maximum value to the slowest driving speed variable C (step S2).

Subsequently, the CPU of the control unit 80 determines whether the movement amount βα of the pointer with the number α exceeds the range in which the movement in the forward rotation direction can be performed in a shorter time in the case of single hand movement. (Step S3).
βα> Zα × Aα / (Aα + Bα) (1)

  As a result, if it is determined that it does not exceed this range, the process proceeds to “No” side, the normal rotation direction is set as the movement direction corresponding to the pointer with the number α (step S4), and the movement amount is the normal amount. A moving amount βα in the rolling direction is set (step S5).

  On the other hand, if it is determined that the above range is exceeded, the process proceeds to “Yes”, sets the reverse rotation direction as the movement direction corresponding to the pointer with the number α (step S6), and then moves in the reverse rotation direction. An amount “Zα−βα” is obtained and set as a movement amount corresponding to the pointer with the number α (step S7).

  Further, when the moving direction is set to the forward rotation direction in step S4, the driving speed of the pointer with the number α is obtained as the positive maximum speed driving speed Aα. Therefore, the value of the slowest driving speed variable C and the driving speed Aα are obtained. In comparison (step S8), if the value of the variable C is larger, the value of the driving speed Aα is substituted into the variable C (step S9).

  On the contrary, when the moving direction is set to the reverse direction in step S6, the driving speed of the pointer with the number α is obtained as the reverse maximum speed driving speed Bα, and therefore, the value of the slowest driving speed variable C and the driving speed Bα are obtained. In comparison (step S10), if the value of the variable C is larger, the value of the driving speed Bα is substituted into the variable C (step S11).

  After that, updating is performed by adding “1” to the number α of the processing target guideline (step S12), and it is determined whether the total number of processing target pointers has been exceeded (step S13). If it does not exceed, the process returns to step S3 and repeats the loop processing (steps S3 to S13). If it exceeds, the process moves to “No” and exits from the loop processing (steps S3 to S13). The first calculation means is constituted by the processing of steps S3 to S10 in the loop processing, and the slowest driving speed extraction means and the driving speed determination means are constituted by the processing of steps S8 to S11.

  That is, the loop process of steps S3 to S13 described above is executed for the total number N of the pointers to be processed while updating the number α of the pointer to be calculated. The direction and amount of movement of each pointer are obtained and stored in the RAM 81. Further, the drive speed (Aα or Bα) at that time is obtained and compared with the value of the latest drive speed variable C, and the value of the variable C is updated as appropriate. As a result, the slowest driving speed described above is substituted into the slowest driving speed variable C.

  When the determination process in step S13 is shifted to the “No” side, first, the processing target pointer number α is subtracted by “1” to return it to the total number N (step S14). Then, it is determined whether a predetermined condition that can be shortened by reversing the moving direction for each pointer is satisfied, and the process proceeds to a loop process (steps S15 to S20) for correcting the moving direction and the moving amount. .

That is, when the loop processing is started, first, whether or not the movement direction stored in correspondence with the pointer of the number α is the normal rotation direction and the movement amount is larger than the rotational movement amount of 180 ° is determined by the following equation. (2) The determination is made according to (3) (step S15). This guideline is a specific guideline.
Zα / 2 <βα (2)
βα <Zα × Aα / (Aα + Bα) (3)
In this case, the above determination may be made by referring to the movement direction and movement amount of each pointer stored in the RAM 81 without performing such calculation.

  If the result of determination in step S15 satisfies the condition, it is further determined whether or not the reverse maximum speed drive speed Bα of the pointer with the number α is equal to or greater than the value of the latest drive speed variable C (step S16). A discrimination means is constituted by the processing of steps S15 and S16.

  As a result, if the conditions of steps S15 and S16 are satisfied, the direction of movement is reversed, indicating that the hand movement is completed in a shorter time. First, the data is stored in the RAM 81 in correspondence with the pointer number α. The movement direction thus set is reset to the reverse rotation direction (step S17), and the movement amount “Zα−βα” when the reverse rotation direction is set is obtained and stored in the RAM 81 in correspondence with the pointer of the number α. The set movement amount is reset (step S18). A second calculation unit is configured by the processes in steps S17 and S18.

  Then, update is performed by subtracting “1” from the guideline number α to be processed (step S19), and it is determined whether “α = 0”, that is, whether the review process has been completed for all the pointers (step S20). ). As a result, if the processing has not been completed for all the pointers, the process returns to step S15 to repeat the above loop processing (steps S15 to S20), and if completed, the loop processing is exited.

  In other words, the loop process of steps S15 to S20 is executed for all the pointers to be processed, so that when moving at the slowest driving speed, the pointer that completes the movement earlier when the moving direction is reversed is determined. Then, the movement direction and the movement amount are corrected and stored in the RAM 81.

  And if it shifts to "Yes" side by the discrimination | determination process of step S20, the process which actually fast-forwards each process target pointer will be performed (step S21: movement control means). Specifically, among the first to fifth step motors 21 to 25, the processing targets for the fast-forwarding hand movement are set together in the set movement direction according to the calculated parameters by the set movement amount. Drive at the speed value of the slowest drive speed variable C. When this driving is completed, the pointer fast-forward process is terminated. By the processing in step S21, each pointer that is a processing target for fast-forwarding is fast-forwarded from the movement start position to the movement end position.

  As described above, according to the analog electronic timepiece 1 of this embodiment, first, the moving direction and the driving speed that are the shortest when the hands are individually fast-forwarded are obtained, and then, among these driving speeds, When moving at the slowest and slowest drive speed, the needle that is the shortest when the moving direction is reversed is determined, and the moving direction and the like are reviewed. Therefore, by reviewing the moving direction and the like, the fast-forwarding operation efficiency is improved, and it is possible to shorten the time for fast-forwarding operation and reduce power consumption.

  Further, the calculation and correction processing of the moving direction can be realized by arithmetic processing of the control unit 80 by using the pointer driving speed data 82a and the one-step step number data 82b stored in the ROM 82.

  In addition, the improvement in hand movement efficiency by reviewing the moving direction as described above is particularly effective in an analog electronic timepiece in which the hour hand and the minute hand are driven independently.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, in the flowchart of FIG. 6, since the first to fifth step motors 21 to 25 are driven by the calculated movement amount, each pointer is moved to the movement end position, so that steps S5 and S7 are performed. In step S18, the amount of movement is obtained and stored in the RAM 81. For example, fast-forwarding is performed while counting the position of each pointer, and it is determined whether or not each pointer has moved to the movement end position. If the control is performed as described above, the processing for obtaining the movement amount and storing it in the RAM 81 may be omitted.

  Moreover, in the said embodiment, although the example which applied this invention to the structure by which all the hands 2-6 are each independently driven by the some step motors 21-25 was shown, for example, an hour hand and a minute hand interlock | cooperate The present invention can be similarly applied to configurations other than a configuration in which all the hands are independently driven, such as a configuration driven by one step motor. In that case, out of a plurality of hands that are driven in conjunction (for example, hour hand and minute hand), the needle with the larger number of steps to make one round is taken as the guide for processing, and the other hand is excluded from the hand for processing, What is necessary is just to perform the process similar to the said embodiment.

  In addition, the details specifically shown in this embodiment, such as the type and number of pointers, the forward and reverse fastest drive speed and the number of rounds of each pointer, and the method of generating the fast-forward drive timing, do not depart from the spirit of the invention. The range can be changed as appropriate.

1 Analog Electronic Clock 2 Hour Hand 3 Minute Hand 4 Second Hand 5 1/10 Second Hand 6 24 Hour Hand 21-25 First to Fifth Step Motor 80 Control Unit 81 RAM
82 ROM
82a Pointer drive speed data 82b Step number data for one cycle

Claims (4)

Multiple guidelines,
A plurality of stepping motors capable of rotating in both the forward and reverse directions, each of which moves the plurality of pointers;
For each of the plurality of pointers, the movement start position of each pointer, the movement end position of each pointer, the fastest driving speed in the forward direction of each pointer that is the fastest driving speed to move in the forward direction, and the movement in the reverse direction The direction of movement of each pointer that can move from the movement start position to the movement end position in the shortest time when moving each pointer individually from the reverse maximum speed driving speed of each pointer that is the fastest driving speed First calculating means for respectively obtaining a driving speed and a moving amount;
A slowest speed extracting means for extracting the slowest slowest driving speed among the driving speeds of the hands calculated by the first calculating means;
A pointer calculated by the first calculation means that the movement direction is the forward direction and the movement amount is larger than the rotational movement amount of 180 degrees is extracted as a specific pointer, and the slowest driving speed is the reverse direction of the specific pointer. A discriminating means for discriminating whether or not the speed is equal to or lower than the fastest driving speed;
When it is determined by the determination means that the following is true, the moving direction of the specific pointer is corrected to the reverse direction, and the movement amount for moving the pointer in the reverse direction from the movement start position to the movement end position is obtained again. Means for calculating
The plurality of step motors are moved to the slowest driving speed in accordance with the moving direction and moving amount of each pointer obtained by the first calculating means and partially corrected by the second calculating means. And a movement control means for moving the plurality of hands to the movement end position of each hand,
An analog electronic timepiece characterized by comprising: A first storage unit that stores the forward direction fastest drive speed and the reverse direction fastest drive speed of each of the hands in correspondence with the plurality of hands,
The first calculation means includes
2. The analog electronic timepiece according to claim 1, wherein information on the fastest driving speed in the forward direction and the fastest driving speed in the reverse direction is acquired from the first storage unit. A second storage unit that stores the number of drive steps for rotating each pointer once in correspondence with the plurality of pointers;
The discrimination means includes
3. The analog electronic timepiece according to claim 1, wherein whether or not the movement amount is larger than a rotation movement amount of 180 degrees is specified based on information on the number of driving steps of the second storage unit. . The plurality of hands include an hour hand, a minute hand, and a second hand,
Wherein the plurality of step motors, the hour hand, the minute hand, according to any one of claims 1 to 3, characterized in that it contains three steps motor for hand movement of the second hand each independently Analog electronic watch.