Image processing method and apparatus in which identification in

Details Image processing method and apparatus in which identification in Image processing method and apparatus in which identification in

1992-12-24

1995-10-10

Wong, Peter S.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358298, 358450, 358458, 347 3, H04N 121

Patent

active

054575400

ABSTRACT:
An image processing apparatus adds information to read image signals and arranges a mark indicative of a position where the information is added so that the additional information can be easily extracted. An image processor processes full-color image signals from a line sensor and a binarization circuit binarizes the signals using a pseudo half-tone processing. A density judgment circuit judges the density of the image signals and controls a modulator which adds additional information. The modulator refers to the contents of a ROM and changes dot positions in the binarized image signals based on the referred information and adds the additional information to the image signals. A FIFO compensates for image signals delayed by the density judgment circuit.

REFERENCES:
patent: 4709274 (1987-11-01), Tanioka
patent: 4739377 (1988-04-01), Allen
patent: 4891666 (1990-01-01), Gordon
patent: 5149140 (1992-09-01), Mowry, Jr. et al.

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