Imaging period controllable solid-stage image pickup device comp

Details Imaging period controllable solid-stage image pickup device comp Imaging period controllable solid-stage image pickup device comp

1989-08-25

1991-08-27

Groody, James J.

Facsimile and static presentation processing

Facsimile

Recording apparatus

35821323, 35821329, H04N 314, H04N 5335

Patent

active

050438182

ABSTRACT:
In a CCD solid-state image pickup device comprising a plurality of photosensitive elements arranged in a plurality of parallel columns, a vertical shift register adjacent to each column of the photosensitive elements, and a horizontal shift register coupled to the vertical shift register, a drain shift register is coupled to a drain circuit to drain disused charges accumulated in the photosensitive elements in each vertical blanking time period except for a specific time period of the vertical blanking time period. The drain shift register may be coupled to the photosensitive elements of each column through a plurality of drain transfer gates. Alternatively, the drain shift register may be coupled to the photosensitive elements through the vertical shift register. The drain shift register may be coupled to the drain circuit either directly or through the horizontal shift register.

REFERENCES:
patent: 4242599 (1980-12-01), Suzuki
patent: 4447735 (1984-05-01), Horii
patent: 4597013 (1986-06-01), Matsumoto
patent: 4837629 (1989-06-01), Shiromizu

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