Method for scanning image information

Details Method for scanning image information Method for scanning image information

1989-09-22

1990-11-06

Peng, John K.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358101, 382 34, 356380, 356386, 360 91, 360 721, H04N 718

Patent

active

049690388

ABSTRACT:
A method for scanning and generating image information includes generating a radiation beam and scanning an image field containing variable image information. Optical variations are detected in the image field, with electro-optical detection means to produce electrical control signals. The electrical control or detection signals are compared with information obtained from recordings in a memory. When an operable match is effected between select of the electrical detection signals and the information recorded in the memory, a coded electrical control signal is generated.

REFERENCES:
patent: 3736376 (1973-05-01), Kato, Jr.
patent: 4409661 (1983-10-01), Romanski
patent: 4606069 (1986-08-01), Johnson
patent: 4628531 (1986-12-01), Okamoto et al.
patent: 4685139 (1987-08-01), Masuda et al.

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