Image processing device for converting a scanned image into a mo

Details Image processing device for converting a scanned image into a mo Image processing device for converting a scanned image into a mo

1991-09-19

1994-12-27

Kuntz, Curtis

Facsimile and static presentation processing

Facsimile

Image reproduction system

358298, 358456, H04N 123

Patent

active

053770153

ABSTRACT:
An image processing device for converting a scanned image into a monochrome image includes a scanner for providing an image signal which is applied to a sampling and holding circuit. The output of the scanning and holding circuit is supplied to a peak hold circuit and to a comparator. The output of the peak hold circuit is also applied to the comparator and the output of the comparator is supplied to a D-type flip flop circuit, the output of which is fed back to the input to the comparator from the scanning and holding circuit. The D-type flip flop generates an alteration of black and white level signals when the output from the sampling and holding circuit is close to the threshold level whereby a printer will print alterations of black and white dots.

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