Time-setting and displaying mode control circuit for an electron

Details Time-setting and displaying mode control circuit for an electron Time-setting and displaying mode control circuit for an electron

1976-04-26

1978-02-14

Witkowski, Stanley J.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

58 855, 307247A, G04B 2708, G04C 300

Patent

active

040731316

ABSTRACT:
There is provided a time setting and displaying mode control circuit for an electronic timepiece comprising first and second switches, first and second detection circuits responsive to the operative conditions of the respective first and second switches and first and second ring counters each including a plurality of shift registers and respectively connected to the first and second detection circuits to produce time setting and displaying mode signals, respectively.
The content of the first ring counter is shifted in response to an output signal produced from the first detection circuit each time the first switch is depressed in the time setting mode. The content of the second ring counter is shifted in response to an output signal produced from the second detection circuit each time the second switch is depressed in the time displaying mode. When the first switch is depressed under the "hour-minute" displaying mode, the content of the first ring counter is changed to provide the "hour" setting mode. Further, when the first switch is kept depressed for more than two seconds in the time setting mode, all the shift registers of the first ring counter are reset to permit the second shift register to provide the "hour-minute" displaying mode.

REFERENCES:
patent: 3988886 (1976-11-01), Kashio

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