Highly efficient coding apparatus for a digital video signal

Details Highly efficient coding apparatus for a digital video signal Highly efficient coding apparatus for a digital video signal

1985-12-17

1987-12-01

Goldberg, E. A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358138, 358260, H04N 712, H04N 140

Patent

active

047108118

ABSTRACT:
In an apparatus for coding digital video data in the form of block of data, the dynamic range information is generated from maximum and minimum values of plural picture elements in a block, the minimum value is subtracted from each of the digital data to generate modified digital video data, the modified digital video data is encoded with a variable digitized bit number determined by the dynamic range information, and the encoded data and an additional code for each block formed of at least two of the maximum value, the minimum value, and a signal representing the dynamic range information are transmitted.

REFERENCES:
patent: 4455571 (1984-06-01), Shimuzu et al.
patent: 4547811 (1985-10-01), Ochi et al.

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