Miscellaneous active electrical nonlinear devices – circuits – and – External effect – Light
Patent
1996-10-04
1999-05-04
Munson, Gene M.
Miscellaneous active electrical nonlinear devices, circuits, and
External effect
Light
257223, 257232, 377 58, 377 61, G11C 1928, H01L 27148, H01L 29768
Patent
active
059007699
ABSTRACT:
A two-dimensional image sensor comprises a matrix array of photodiodes and multiple vertical shift registers horizontally divided into an imaging part and a memory part. During a vertical blanking period, the imaging part receives charge packets from the photodiodes and shifts the charge packets via the memory part to a matrix array of storage cells. During a subsequent horizontal blanking period, the charge packets are restored from the storage cells to the memory part and shifted downwards by the distance of a row so that the charge packets of bottom row are shifted our into a horizontal register. Remaining charge packets are then withdrawn from the memory part to the storage cells and stored therein during a subsequent horizontal scan period. During this horizontal scan period, the memory part is maintained at such a voltage that no dark currents substantially exist and the charge packets in the horizontal register are sequentially delivered to external circuitry.
REFERENCES:
patent: 4758895 (1988-07-01), Elabd
patent: 4803710 (1989-02-01), Elabd
patent: 5426317 (1995-06-01), Hirota
Munson Gene M.
NEC Corporation
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