Facsimile signal converter

Details Facsimile signal converter Facsimile signal converter

1978-06-27

1979-04-17

Griffin, Robert L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358284, H04H 712

Patent

active

041504011

ABSTRACT:
A facsimile signal converter for converting an input facsimile signal into an output facsimile signal having a scanning line density different from that of the input facsimile signal. A table circuit is provided for developing white and black states of each output picture element of the output facsimile signal in correspondence to a predetermined number of combinations of states of reference picture elements and the geometric relation between the reference picture elements and the output picture elements. The reference picture element corresponds to at least one input picture element of the input facsimile signal adjacent to each output picture element of the output facsimile signal in consideration of a state of superimposing an input pattern on an output pattern indicated respectively by the input facsimile signal and the output facsimile signal. The white and black states of the output picture elements are read out from the table circuit to provide the output facsimile signal in response to each input picture element of the input facsimile signal on the base of the instant conditions of the geometric relation and the reference picture elements.

REFERENCES:
patent: 3956578 (1976-05-01), de Loye et al.
patent: 3980809 (1976-09-01), Cook
patent: 4028731 (1977-06-01), Arps et al.

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