Analog electronic watch
An electronic watch and stepper motor technology, applied in the field of analog electronic watches, can solve the problem of inability to improve the fast forward speed of the motor, and achieve the effect of low power consumption
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Embodiment approach 1
[0063] FIG. 1 is a block diagram showing the configuration of an analog electronic timepiece according to Embodiment 1 of the present invention. In addition, the analog electronic watch in this embodiment is an example of an analog electronic watch.
[0064] As shown in FIG. 1 , an analog electronic watch (analog electronic watch) 1 according to this embodiment includes, as main components, a display unit 2 provided with pointers, a stepping motor 3 as a pointer driving unit, and a control unit as a pointer driving unit. The motor drive part 4, the pointer position detection unit 5, the pointer position detection unit control part 6, the detection cycle change part 7, the correction amount calculation part 8 as the pointer position correction amount calculation unit, the timing part 9, and the main factor of the pointer position deviation The impact detection part 10 of the detection unit.
[0065] The stepping motor 3 is rotationally controlled based on a drive pulse signal ...
Embodiment approach 2
[0113] 6 is a block diagram showing the configuration of an analog electronic timepiece according to Embodiment 2 of the present invention. The analog electronic timepiece 1 a according to the present embodiment includes an external magnetic force detection unit 11 as means for detecting a factor of hand position deviation. In addition, other configurations are the same as those of Embodiment 1 shown in FIG. 1 , and thus redundant descriptions are omitted.
[0114] In the external magnetic force detection part 11, a rotation detection circuit (not shown) that detects the rotation / non-rotation of the rotation of the rotor based on the induced voltage generated with the rotation of the rotor of the stepping motor 3 is also used to detect magnetic flux from the outside. The magnetic force (magnetic field) of the circuit, and detects the magnetic force (external magnetic force) from the outside to the analog electronic watch 1.
[0115] When there is an electronic instrument (suc...
Embodiment approach 3
[0120] 7 is a block diagram showing the configuration of an analog electronic timepiece according to Embodiment 3 of the present invention. The analog electronic timepiece 1b according to the present embodiment includes a temperature detection unit 12 as means for detecting factors of hand position deviation. In addition, other configurations are the same as those of Embodiment 1 shown in FIG. 1 , and thus redundant descriptions are omitted.
[0121] In the present embodiment, the timekeeping unit 9 includes a rate correction unit (not shown) that corrects the rate of difference with respect to temperature of a crystal oscillator as an oscillation signal source, and the rate corrector has a temperature sensor so that Obtain temperature information for correcting the differential rate. Therefore, the temperature detection unit 12 may also be used as the temperature sensor of the differential correction unit, and a temperature sensor dedicated to the temperature detection unit ...
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