Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1978-06-19
1981-03-17
Griffin, Robert L.
Facsimile and static presentation processing
Facsimile
Recording apparatus
364515, H04N 100
Patent
active
042570697
ABSTRACT:
Correlation between data in two adjacent scan lines is sensed. When the degree of correlation is above a predetermined value the data is compressed by means of two dimensional compression. When the degree of correlation is below the predetermined value the data is compressed by means of one dimensional compression. Typically, both the one and two dimensional compression systems are based on run length encoding. After a predetermined number of scan lines have been compressed by two dimensional compression, one scan line may be compressed by one dimensional compression to prevent accumulation of error.
Murayama Noboru
Taniguchi Hayashi
Alexander David G.
Coles Edward L.
Griffin Robert L.
Ricoh & Company, Ltd.
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