IC Input circuitry

Details IC Input circuitry IC Input circuitry

1977-09-20

1981-02-17

Anagnos, Larry N.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307220C, 307251, 307279, 307288, 368219, H03K 519, H03K 17687, G04C 300

Patent

active

042517397

ABSTRACT:
IC input circuitry particularly suited for use in an electronic wristwatch or other small-sized electronic instrument is provided. Each input stage is adapted to receive at least one input. An input terminal is provided for each input stage in order to receive a two-state input signal. An impedance element is disposed intermediate each input terminal and a reference voltage, in order to distinguish between respective states of the input signal. The invention is particularly characterized by gating circuitry for producing a gating signal having a predetermined time interval, and a memory, coupled to each input terminal and impedance element coupled thereto, for selectively storing the state of the input signal applied to the input terminal and discriminated by the impedance element, during the predetermined time interval of the gating signal.

REFERENCES:
patent: 3812384 (1974-05-01), Skorup
patent: 4025800 (1977-05-01), Wanlass
patent: 4044343 (1977-08-01), Uchida
patent: 4045692 (1977-08-01), Morokawa et al.
patent: 4095405 (1978-06-01), Tanaka
patent: 4106278 (1978-08-01), Yasuda
patent: 4114052 (1978-09-01), Manabe et al.
patent: 4130988 (1978-12-01), Scherrer et al.

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