Image analysis – Image sensing
Patent
1996-08-15
1999-02-23
Vu, Kim Yen
Image analysis
Image sensing
358474, 358475, H04N 104
Patent
active
058752692
ABSTRACT:
An information reading device which has no need for mechanically moving a document or its reading portion and which is reliable to read information by using its two-dimensional reading system. A sensor panel is formed of first-layer striped electrodes made of material having high transmissivity and formed on a transparent substrate, a striped amorphous silicone layer laid with stripes disposed orthogonal to the first striped electrodes on the transparent substrate and second-layer striped electrodes made of material having a low transmissivity and formed over the striped amorphous-silicone layer. Photoelectric cells are formed one at each intersection of the first layer electrodes and the second layer electrodes. A thin flat type light source is placed on the bottom surface of the sensor panel and tightly fixed thereto. A plurality of photoelectric cells is two-dimensionally scanned by a first scanning portion and a second scanning portion and obtained current signals are converted into voltage signals by a current-to-voltage converting portion. The voltage signals are amplified by an amplifier portion and reproduced into an original image information by the signal processing portion.
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Sensor and Signal Processing, 2nd ed., 2nd print, Kyoritu Publishing Co., 1989, p. 170 et. seq.
Yamashita Takashi
Yoshida Yasuhiro
Conlin David G.
Lowry David D.
Sharp Kabushiki Kaisha
Vu Kim Yen
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