Solid-state imaging apparatus

Details Solid-state imaging apparatus Solid-state imaging apparatus

1979-12-07

1981-11-10

Murray, Richard

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358213, H04N 534

Patent

active

043001637

ABSTRACT:
A solid-state imaging apparatus has an imaging unit which is partly shielded against incident light to produce an optically shielded signal. A memory unit is provided for storing the optically shielded signal as a dark state signal during one horizontal scanning period. A line defect signal representative of a line defect present in the imaging unit is stored in the memory unit during the one horizontal scanning period. An optical signal of the imaging unit and a dark state signal stored in the memory unit during the one horizontal scanning period are subtracted so that the line defect signal contained in the optical signal of the imaging unit and the dark state signal are cancelled out to produce a signal having no line defect.

REFERENCES:
patent: 4200934 (1980-04-01), Hofmann

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