High efficiency technique for coding a digital video signal

Details High efficiency technique for coding a digital video signal High efficiency technique for coding a digital video signal

1986-10-30

1988-03-01

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358136, 358105, H04W 712

Patent

active

047290218

ABSTRACT:
A high efficiency apparatus for coding digital video data compresses the number of bits per picture element in the video data such as a digital video signal or the like is. The video data of a television picture plane is divided into a number of three-dimensional blocks, i.e., spatial blocks. The picture element data in the block can be coded using a reduced number of bits by bit compression by performing a coding process adapted to the narrowed dynamic range on the basis of the correlation among the picture elements in each block. The transmission data has the number of bits reduced as compared with the number of bits of the original data. By coding only the necessary frames by discriminating movement of the image in the block, redundancy in the direction of time can be removed.

REFERENCES:
patent: 4371895 (1983-02-01), Koga
patent: 4575756 (1986-03-01), Furukawa
patent: 4656511 (1987-04-01), Koga

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