Electrical pulse counters – pulse dividers – or shift registers: c – Charge transfer device – Compensating for or preventing signal charge deterioration
Patent
1988-03-03
1989-08-08
Munson, Gene M.
Electrical pulse counters, pulse dividers, or shift registers: c
Charge transfer device
Compensating for or preventing signal charge deterioration
377 61, 357 24, 35821319, 307311, G11C 1928, H01L 2978, H04N 314, H03K 342
Patent
active
048560332
ABSTRACT:
A solid state imager has a substrate with a plurality of light receiving areas, with vertical registers to transfer charges accumulated in the light receiving areas either through the vertical registers to a horizontal register section and an output terminal, or to a drain region. The transfer is accomplished by use of externally supplied driving pulses. By use of a high-speed normal-transfer operation, charges which are trapped by potential barriers and/or potential dips, and which would normally appear as noise in the form of black spots or bright spots, can be eliminated prior to the read out if the charge signals via the vertical registers and the horizontal register, whereby the output signal is produced free of such noise.
REFERENCES:
patent: 3931463 (1976-01-01), Levine
patent: 4245164 (1981-01-01), Funahashi
patent: 4322753 (1982-03-01), Ishihara
patent: 4651215 (1987-03-01), Bell et al.
patent: 4783702 (1988-11-01), Sone et al.
patent: 4800435 (1989-01-01), Ikeda et al.
Munson Gene M.
Sony Corporation
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