High speed data compactor

Details High speed data compactor High speed data compactor

1986-12-30

1988-06-14

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358260, 375122, H04N 712

Patent

active

047515724

ABSTRACT:
A method and apparatus for suppressing from transmission, non-informational data words from a source of data words such as a video camera. Data words having values greater than a predetermined threshold are transmitted whereas data words having values less than a predetermined threshold are not transmitted but their occurrences instead are counted. Before being transmitted, the count of occurrences of invalid data words and valid data words are appended with flag digits which a receiving system decodes. The original data stream is fully reconstructable from the stream of valid data words and count of invalid data words.

REFERENCES:
patent: 3980809 (1976-09-01), Cook
patent: 4057834 (1977-11-01), Nakagome et al.
patent: 4158856 (1979-06-01), Tucker
patent: 4598372 (1986-07-01), McRoberts

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