Photoelectric imager with a high S/N ratio

Details Photoelectric imager with a high S/N ratio Photoelectric imager with a high S/N ratio

1984-02-13

1987-01-06

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

358167, 358213, H04N 530

Patent

active

046348867

ABSTRACT:
An elongated photoelectric converter unit having a good S/N characteristic but no crosstalk without using any blocking diode. The photoelectric converter comprising: a signal amplifying device having m photosensor groups each consisting of n photosensor elements and n signal amplifying elements connected to the photosensor elements in each group; first and second sample and hold device each having n sample and hold elements connected to the signal amplifying elements; first and second input signal selecting device connected to those first and second sample and hold device, respectively, each of the first and second input signal selecting device having n input signal selecting elements provided corresponding to the respective sample and hold elements of each sample and hold device; and an amplifying device for amplifying the difference between the values of the signals to be transferred from the respective first and second input signal selecting device as a signal and outputting.

REFERENCES:
patent: 4511804 (1985-04-01), Ozawa

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