CID imager with reduced crosstalk and method for operation there

Details CID imager with reduced crosstalk and method for operation there CID imager with reduced crosstalk and method for operation there

1987-08-31

1988-08-30

Ng, Jin F.

Facsimile and static presentation processing

Facsimile

Recording apparatus

35821315, 35821318, H04N 314

Patent

active

047680989

ABSTRACT:
A charge-injection-device imager, having reduced crosstalk in a two-dimensional array of pixels each of which stores charge responsive to impingent light photons and until injection occurs, has: a column scanner for cyclically scanning each successive column of the array for each row to be scanned; a row scanner for cyclically scanning each successive row of the array, with each row being enabled after the conclusion of an injection time interval which appears after a previous row has been scanned, and also for re-scanning that row again while a second-next row is being scanned; line delay storage for the video signal provided by two successively scanned rows; and a subtractor for providing an imager output signal as the difference between the stored video signal from any row and the video signal from that same row after the stored charge of that row of pixels has been injected out of that row of pixels only after the next row had already been readout. A method for reducing crosstalk in a charge-injection-device imager of this type is also disclosed.

REFERENCES:
patent: 4301520 (1981-11-01), Green
patent: 4316221 (1982-02-01), Swab
patent: 4336557 (1982-06-01), Koch
patent: 4434441 (1984-02-01), Ishizaki et al.
patent: 4681440 (1987-07-01), Burke et al.
patent: 4682236 (1987-07-01), Wang et al.
patent: 4689688 (1987-08-01), Michon
patent: 4734776 (1988-03-01), Wang et al.

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