Image reading apparatus having a plurality of line sensors and m

Details Image reading apparatus having a plurality of line sensors and m Image reading apparatus having a plurality of line sensors and m

1988-10-11

1990-11-27

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 75, 358 77, H04N 146

Patent

active

049740725

ABSTRACT:
An image reading apparatus has a plurality of line sensors for reading an image, a pulse generator for independently driving the plurality of line sensors under the control of a CPU, and black level correction circuits for correcting black levels of output image signals from the plurality of line sensors. The black level correction circuits perform different black level correction operations for crosstalk portions than for other portions generated by the plurality of line sensors.

REFERENCES:
patent: 4750048 (1988-06-01), Satoh et al.
patent: 4891690 (1990-01-01), Hasegawa et al.

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