Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1981-06-08
1982-12-28
Orsino, Jr., Joseph A.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358133, 358280, H04N 712
Patent
active
043665063
ABSTRACT:
A system for sampling binary value images of white and black and efficiently encoding and decoding them is disclosed. An image is sampled to form a plurality of small picture cells. The small picture cells are merged in groups of four to form a plurality of large picture cells. At least one least frequently occurring density level is determined for the plurality of large picture cells. The least frequently occurring density level is converted to an adjacent density level. The density levels for the picture cells are then encoded and transmitted to a receiver. At the receiving end, the encoded large picture cells are decoded to form a plurality of restored large picture cells. Each restored large picture cell is divided into four small restored picture cells by comparing its density level with that of four neighboring large restored picture cells.
REFERENCES:
patent: 3414677 (1968-12-01), Quinlan
patent: 3700797 (1972-10-01), Wernikoff
patent: 3849592 (1974-11-01), Rosenheck
patent: 4084196 (1978-04-01), Tisue et al.
patent: 4124870 (1978-11-01), Schatz et al.
Machol-Pseudo -Halftone for Representing Continuous Tone Images in Black-White Facsimile Systems-IBM Tech. Discl. Bull., vol. 9#6 Nov. 1966, pp. 636-637.
Ejiri Koichi
Kurose Morisumi
Maeda Mamoru
Kabushiki Kaisha Ricoh
Orsino Jr. Joseph A.
LandOfFree
Picture transfer method and apparatus therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Picture transfer method and apparatus therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Picture transfer method and apparatus therefor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1340383