Electronic watch with alarm mechanism

Details Electronic watch with alarm mechanism Electronic watch with alarm mechanism

1976-10-21

1980-02-26

Rubinson, Gene Z.

58 23R, 58 165, G04C 2100

Patent

active

041899105

ABSTRACT:
An electronic watch having a time counter for counting a time standard signal to develop a count representative of present time, a recurrent alarm time memory circuit for storing a recurrent alarm time, and a single alarm time memory circuit for storing a once-occurring alarm time. A setting circuit is operable for clearing the contents of the single alarm time memory circuit. A coincidence detecting circuit detects coincidence between the contents of the time counter and the contents of both memory circuits, and develops an output signal when coincidence is detected. Alarm time clearing circuitry responds to the output signal of the coincidence detecting circuit for enabling the setting circuit to clear the single alarm time memory after the once-occurring alarm time has occurred. An alarm circuit is responsive to the output signal of the coincidence detecting circuit for developing an alarm each time the contents of the time counter coincides with the contents of one of the memories.

REFERENCES:
patent: 3775967 (1973-12-01), Spadini
patent: 3834153 (1974-09-01), Yoda
patent: 3946549 (1976-03-01), Cake
patent: 4095410 (1978-06-01), Kaneko

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