Facsimile system

Details Facsimile system Facsimile system

1976-06-14

1978-03-28

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358264, 358293, 358294, 358901, H04N 112, H04N 136

Patent

active

040818420

ABSTRACT:
Disclosed is a facsimile system having a transmitter for optically scanning input copy to produce modulated electrical signals to be transmitted to a receiver. The receiver responsively controls output optical scanning to form output copy as a reproduction of the input copy. Signal processing in both the transmitter and receiver employs spatial coding. In the transmitter scanner, a spatially coded reference signal, generated by the scanning beam and a spatial mask, is employed. In the receiver scanner, a spatially coded reference signal, generated by the scanning beam and an identical spatial mask is employed also. Therefore, the transmitter and receiver scanners are spatially synchronized without the need for real-time synchronization.

REFERENCES:
patent: 3584144 (1971-06-01), Shepard
patent: 3849592 (1974-11-01), Rosenheck

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