Electronic watch

Details Electronic watch Electronic watch

1977-12-13

1980-02-19

Witowski, S. J.

58 4A, 58 38R, 58 395, 58 50R, 58 575, 58 58, 58 855, G04C 300, G04C 900

Patent

active

041887760

ABSTRACT:
A method and circuit for selecting a function of a watch. A predetermined number and a predetermined sequence of electrical code signals are user generated by two switches which are located on the watch. The code signals correspond to at least one function of the watch. The sequence of code signals is stored and the code signals occurring within a predetermined time period are counted. The count of the code signals occurring within the predetermined time period is compared to the predetermined number and the stored sequence of code signals are decoded only when the count of the code signals equals the predetermined number within the predetermined time period.

REFERENCES:
patent: 3988597 (1976-10-01), Yamaguchi
patent: 3994124 (1976-11-01), Fujita
patent: 4045952 (1977-09-01), Kashio
patent: 4073131 (1978-02-01), Takase et al.
patent: 4092822 (1978-06-01), Droz et al.
patent: 4094135 (1978-06-01), Nomura et al.
patent: 4117663 (1978-10-01), Mosimann et al.
patent: 4128991 (1978-12-01), Robert-Grandpierre
patent: 4142361 (1979-03-01), Kimura

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