Past record correcting/reading apparatus

Details Past record correcting/reading apparatus Past record correcting/reading apparatus

1986-10-20

1989-03-14

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

358282, H01J 4014, H04N 140

Patent

active

048126675

ABSTRACT:
A past record correcting/reading apparatus comprises storage circuit means for storing photoelectric conversion information (image information) of the respective photosensitive elements corresponding to scanning lines during the past scanning operation; and level control means for controlling quantizing-levels or output levels of photoelectric conversion output signals derived from the respective photosensitive elements during the present scanning operation, based upon the past image formation read out from the storage circuit means.

REFERENCES:
patent: 4264932 (1981-04-01), Minamibayashi
patent: 4453268 (1984-01-01), Britt
patent: 4672682 (1987-01-01), Naruse et al.

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