Picture image scanning and reproducing method and system therefo

Details Picture image scanning and reproducing method and system therefo Picture image scanning and reproducing method and system therefo

1984-07-11

1987-03-17

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358289, 358283, 358298, H04N 104

Patent

active

046512250

ABSTRACT:
A picture image scanning and reproducing method capable of operating a picture image processing unit at a constant system clock even when the data transferring speed for digital picture image signals obtained by scanning an original or the data transferring speed in a picture image recording unit is changed, as well as a system suitable for use in the practice of the above method. Signals can be processed at a constant throughput owing to the provision of frequency changing means respectively at both input and output sides of the picture image processing unit. A single system clock is input to each of various processing circuits, where the system clock is converted to a desired frequency so as to operate the corresponding processing circuit. Therefore, the present invention has materialized simplification of the circuit structure and reduction of the manufacturing cost.

REFERENCES:
patent: 4454537 (1984-06-01), Okada et al.
patent: 4533958 (1985-08-01), Herget
patent: 4561024 (1985-12-01), Tamura

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