Photoelectric converter and image reading apparatus mounting the

Details Photoelectric converter and image reading apparatus mounting the Photoelectric converter and image reading apparatus mounting the

1992-03-03

1993-11-09

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

358471, 358482, 358496, 357431, G06K 900, H04N 1024, H01L 3102

Patent

active

052610136

ABSTRACT:
A photoelectric converter includes a transparent substrate having a photoelectric converting element provided on a surface opposing a document relating to reading of image information, a transparent support for supporting the substrate, and a light source provided on a surface of the support opposite to a supporting surface for the substrate. Light emitted from the light source is radiated on a document through the support and the substrate, and reflected light is received by the photoelectric converting element.

REFERENCES:
patent: 4689652 (1987-08-01), Shimada et al.
patent: 4908718 (1990-03-01), Shimada
patent: 4920431 (1990-04-01), Ogura et al.

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