Image reading apparatus

Details Image reading apparatus Image reading apparatus

1997-04-23

1999-03-23

Kelley, Christopher S.

Image analysis

Image sensing

348219, G06K 700

Patent

active

058870873

ABSTRACT:
CCD line sensors for detecting R, G, B colors are displaced by a piezoelectric element in a direction in which the CCD line sensors are arrayed, for repeatedly reading an image on one scanning line a plurality of times. Each time the image is read, pixel signals produced by the photoelectric transducers of the CCD line sensors are combined in a given sequence through selector switches, and stored as a series of data in line buffers associated with the colors. Two line buffers are associated with each of the colors. While one of the line buffers is in the process of storing pixel signals, the pixel signals stored in the other line buffer are read and processed into an image signal. The resolution of the image signal is increased without increasing the number of the photoelectric transducers and using a relatively small memory capacity.

REFERENCES:
patent: 4581649 (1986-04-01), Morokawa
patent: 4607287 (1986-08-01), Endo et al.
patent: 4992878 (1991-02-01), Hersh
patent: 4998164 (1991-03-01), Endo et al.
patent: 5063450 (1991-11-01), Pritchard

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