Method of transmitting serial data between facsimile equipment a

Details Method of transmitting serial data between facsimile equipment a Method of transmitting serial data between facsimile equipment a

1983-06-23

1985-08-06

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358286, 358287, 340347DD, 343 55C, H04N 140, H04N 104

Patent

active

045339589

ABSTRACT:
A method of transforming serial binary data exchanged between facsimile transceivers having different horizontal resolutions. Binary signal elements representing a scanning line are separated into a sequence of n bit data words and the number and type of subsequent bit changes within each data word is derermined. A conicident sequence of m bit data words is generated such that the bit pattern of each corresponding n bit data word substantially is reproduced by arbitrarily padding of an insignificant bit if n<m and by dropping of an insignificant bit, respectively if n>m; wherein n:m corresponds to the ratio of the transceiver resolutions. The serial data stream is reproduced from the sequence of said second data words and transmitted to the receiving facsimile transceiver for recording.

REFERENCES:
patent: 3729584 (1973-04-01), de Vos et al.
patent: 3849592 (1974-11-01), Rosenheck
patent: 4048657 (1977-09-01), Kmith
patent: 4068266 (1978-01-01), Liao
patent: 4081843 (1978-03-01), Okano
patent: 4288820 (1981-09-01), Minamibayashi et al.
patent: 4402015 (1983-08-01), Yamada
Analog-Digital Conversion Handbook; The Engineering Staff of Analog Devices, Inc.; Jun. 1972; pp. I-64-I-65.

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