Image pickup apparatus having a Gray counter

Details Image pickup apparatus having a Gray counter Image pickup apparatus having a Gray counter

1991-05-07

1993-03-02

Goldstein, Herbert

Facsimile and static presentation processing

Facsimile

Recording apparatus

358209, 35821311, 377 34, H04N 5335

Patent

active

051914255

ABSTRACT:
An image pickup apparatus includes a lens, and a solid-state image sensor for converting light which passes through the lens into an electric signal. A signal processing circuit serves to process the electric signal outputted from the solid-state image snesor. A Gray code counter serves to count pulses of a first clock signal and to generate Gray codes in response to the first clock signal. A latch device functions to feed a second clock signal and a synchronizing signal to the solid-state image sensor and the signal processing circuit in response to the Gray codes generated by the Gray code counter respectively. The Gray code counter circuit includes n-bit counting stages where n denotes a predetermined natural number, and a plurality of logic decoders for feeding logic outputs to input terminals of the respective counting stages, the logic outputs being equivalent to a product of a first logic output of a (k-1)-th-bit counting stage and second logic outputs of a (k-2)-th-bit counting stage and lower-bit counting stages where k denotes a natural number between 3 and n.

REFERENCES:
patent: 4567529 (1986-01-01), Yamaguchi et al.
patent: 4599657 (1986-07-01), Kaji et al.
patent: 4937845 (1990-06-01), Warner
patent: 4980778 (1990-12-01), Wittman
patent: 5084841 (1992-01-01), Williams et al.
Fast Synchronous Gray Counter-North Holland Publishing Co.,-D. Porat et al.

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