Method of picture reproduction with variable reproduction scale

Details Method of picture reproduction with variable reproduction scale Method of picture reproduction with variable reproduction scale

1977-07-13

1979-08-07

Griffin, Robert L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358 77, 358 80, H04N 106

Patent

active

041636058

ABSTRACT:
A method of picture reproduction with variable reproduction scale. The original picture is scanned to obtain picture signals to be recorded, the picture signals are written into a memory with addressing in synchronization with timing pulses, and then the original picture is reproduced by reading out the picture signals from the memory. In this method a variable magnification scale can be obtained by compressing or elongating the picture signals with the use of insert pulses different from the usual timing pulses, the insert pulses being inserted among the timing pulses in proportion to the magnification scale required.

REFERENCES:
patent: 3272918 (1966-09-01), Koll et al.
patent: 3541245 (1970-11-01), Wilby
patent: 3956583 (1976-05-01), Pugsley
patent: 4075663 (1978-02-01), Wellendorf

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