Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1995-11-13
1996-12-24
Miska, Vit W.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358427, H04N 132
Patent
active
055877982
ABSTRACT:
An encoding (or decoding) method, by which raw data of 1 line is converted into, for example, modified Huffman (MH) code (or MH code is converted into raw data) by obtaining a cumulative run-length code every transition point, at which there occurs a transition or change between a run of white pixels to another contiguous run of black pixels, from the beginning of the line and then converting the cumulative run-length code to the MH code (or converting the MH code to the cumulative run-length code). The cumulative run-length code is defined by both of data, which indicates that a pixel of a run just prior to the transition point is black or white, and data representing a cumulative run-length of the run up to the pixel thereof just prior to the transition point. Thus, an encoding or decoding processing can be performed at a high speed.
REFERENCES:
patent: 4688100 (1987-08-01), Haganuma et al.
patent: 4845569 (1989-07-01), Kurahayashi et al.
Globecom'82, vol. 1, 2 Dec. 1982, Miami, pp. 427-433,T. Tsuiki et al. `Image Processing Based On A Runlength Coding And Its Application To An Intelligent Facsimile`.
CCITT, Yellow Book, vol. VII, Fascicle VII.2, 10 Nov. 1980, Geneva, pp. 222-234, `Telegraph And Telematic Services Terminal Equipment, Recommendations Of The S and T Series, Recommendation T.4`.
AEU ARCHIV Fur Elektronik & Ubertragungstechnik, vol. 35, No. 10, Oct. 1981, Wurzburg, Germany, pp. 383-391, G. Renelt `Zur Zeilensynchronisation Bei Gestorten Ubertragungsdaten Von Lauflangencodierten Faksimilebildern`.
Kurita Kazuo
Mizutani Mikio
Nemoto Hiroyuki
Noguchi Osamu
Noma Nobuhiko
Matsushita Graphic Communication Systems Inc.
Miska Vit W.
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