Method of and apparatus for generating image data used to record

Details Method of and apparatus for generating image data used to record Method of and apparatus for generating image data used to record

1987-08-25

1989-02-28

Groody, James J.

Facsimile and static presentation processing

Facsimile

Recording apparatus

356298, H04N 1387

Patent

active

048090824

ABSTRACT:
Gradation levels of an image to be recorded are expressed by gradation data having integral parts and decimal parts. Random numbers are composed with the decimal parts to provide composite values. When the composite value exceeds, the quantity is added to the value of the integral part. The decimal parts are accumulated along the direction of an array of pixels, to provide accumulated values. Also when the accumulated value exceeds, the quantity is added to the value of the integral part to provide a modified integral part. The modified integral parts are employed as gradation data in image recording.

REFERENCES:
patent: 4279003 (1981-07-01), Schulz
patent: 4366507 (1982-12-01), Mori
patent: 4449150 (1984-05-01), Kato
patent: 4496989 (1985-01-01), Hirosawa
patent: 4578714 (1986-03-01), Suyiura et al.
patent: 4654721 (1987-03-01), Goertzel et al.
patent: 4700235 (1987-10-01), Gall
patent: 4701811 (1987-10-01), Moriguchi et al.
patent: 4758897 (1988-07-01), Hiratsuka et al.

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