Video signal transmitting system

Details Video signal transmitting system Video signal transmitting system

1990-10-12

1992-07-21

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

338105, H04N 7133, H04N 7137

Patent

active

051327929

ABSTRACT:
Video signal transmitting system in which digital video signal are divided into groups of predetermined frames. Digital video signals of at least one frame are intraframe coded and then transmitted. Remaining digital video signals are interframe coded with reference to the intraframe coded digital video signals, and intraframe coded digital video signals of a subsequent group of frames and are then transmitted. A motion vector from a predetermined reference frame is detected. Video signals are interframe coded by the motion vector to transmit the video signals. A motion vector from a first frame which is a plurality of frames away from the reference frame is converted to a motion vector for a one frame interval between the reference frame and the first frame. The motion vector is optimized, and is then transmitted.

REFERENCES:
patent: 4868653 (1989-09-01), Golin et al.
patent: 4985768 (1991-01-01), Sugiyama

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