US 2002/0172099 A1Published application

Analog electronic timepiece

AssigneeSeiko Instruments Inc.

InventorSaburo Manaka

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Abstract

To enable to easily stop a second hand at a 0 second position even in an analog electronic timepiece operating a hand at a high period. A dividing circuit outputs a low frequency pulse signal and a high frequency pulse signal at predetermined frequencies to a control circuit. The control circuit outputs the low frequency pulse signal of 4 pulses per second aligned at equal intervals when it is detected by a detecting circuit that an operating portion is not operated and outputs repeatedly the high frequency pulse signal of consecutive 4 pulses at every second when it is detected by the detecting circuit that the operating portion is operated. A motor driving circuit and a motor normally operate a second hand in response to the low frequency pulse signal and repeats, at a period of 1 second, operation of fast feeding the second hand and thereafter stopping the second hand during a predetermined period of time in response to the high frequency pulse signal.

Claims6

Dependent claims

An analog electronic timepiece characterized in that in an analog electronic timepiece for indicating time by driving to rotate a time hand based on a pulse signal and setting time of the time hand by stopping to operate the time hand by a predetermined operation, the analog electronic timepiece comprising:

an operating portion;
a detecting circuit for detecting operation of the operating portion;
a pulse generating circuit for repeatedly outputting a pulse signal of a predetermined pulse number per a predetermined time period;
and
a motor driving circuit for controlling to rotate a motor for driving to rotate a second hand by a number in correspondence with the pulse number of the pulse signal received from the pulse generating circuit;
wherein the pulse generating circuit outputs a first pulse signal of a predetermined pulse number per the predetermined time period aligned at equal intervals repeatedly at every time of the predetermined time period when it is detected by the detecting circuit that the operation of the operating portion is not operated and outputs a second pulse signal concentrated with pulses of the predetermined number in a predetermined range within the predetermined time period repeatedly at every time of the predetermined time period when it is detected by the detecting circuit that the operation of the operating portion is operated.

3 more elements

Dependencies are inferred from the claim text.