Method for the reading of photosensitive cells of the type compr

Details Method for the reading of photosensitive cells of the type compr Method for the reading of photosensitive cells of the type compr

1989-09-12

1990-08-14

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

35821311, H01J 4014

Patent

active

049489666

ABSTRACT:
The disclosure concerns the reading of the photocharges generated by the illumination of a matrix of photosensitive dots. The dots are formed by a photosensitive diode in series with a reading diode, all between a row and a column of the matrix. To reduce the reading errors, there is provision to illuminate the photosensitive dots with a constant illumination which gets added to the illumination to be measured, thus creating driving charges that get added to the useful charge and facilitate its transfer to a reading register.

REFERENCES:
patent: 4499384 (1985-02-01), Segawa et al.
patent: 4785191 (1988-11-01), Ondris
patent: 4826777 (1989-05-01), Ondris

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