Image pickup means

Facsimile and static presentation processing – Facsimile – Recording apparatus

Patent

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Details

358225, H04N 530

Patent

active

045846065

ABSTRACT:
Image pickup means which incorporate means for logarithmically converting the incident light intensity, for controlling the light intensity issued with a plurality of varied intensities, and performing electrically the controlling of throttling of light intensity and dynamic range by receiving the light from the controlling means on pickup elements, adding the converted electrical signals, corresponding to the light intensity received on the pickup elements, through adder means to provide electrical signals having a magnified dynamic range and processing these electrical signals through subsequent circuits.

REFERENCES:
patent: 3651252 (1972-03-01), Land et al.
patent: 3934153 (1976-01-01), Lindley et al.
patent: 4325083 (1982-04-01), Rouchon et al.
patent: 4366377 (1982-12-01), Notthoff et al.
patent: 4480269 (1984-10-01), Yoshida et al.

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