Method of coding a digital video signal for reverse reproduction

Details Method of coding a digital video signal for reverse reproduction Method of coding a digital video signal for reverse reproduction

1989-05-30

1990-07-17

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358135, 358136, H04N 7137

Patent

active

049424653

ABSTRACT:
On subjecting a digital video signal of successive pictures to redundancy reduction coding, a mode signal is produced which indicates, as the redundancy reduction coding, a selected one of interframe coding and intraframe coding. The digital video signal is selectively subjected to the selected one of the interframe and the intraframe coding in response to the mode signal. A particular picture element of a current picture is subjected to the intraframe coding when the mode signal indicates that the particular picture element should be subjected to the interframe coding and that a corresponding picture element of a following picture following the current picture should be subjected to the intraframe coding. The mode signal and results of the interframe and the intraframe coding are multiplexed into a multiplexed signal. When a motion-compensated coding is used instead of the interframe coding, a specific picture element of the current picture is subjected to the intraframe coding when the mode signal indicates that the specific picture element should be subjected to the motion-compensated coding and furthermore when the specific picture element has no relation to a movement represented by each of motion vectors which are used in carrying out the interframe coding on the picture elements of the following picture.

REFERENCES:
patent: 4734767 (1988-03-01), Kaneko
patent: 4837618 (1989-06-01), Hatori

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