Forced intra-frame coding method

Details Forced intra-frame coding method Forced intra-frame coding method

1994-06-30

1996-02-13

Britton, Howard W.

Television

Bandwidth reduction system

Data rate reduction

348408, 348423, H04N 750

Patent

active

054915090

ABSTRACT:
A forced intra-frame coding method for a video processing system includes steps by which video data is coded in the vertical direction of a frame while coding is performed to permit production of forcibly intra-frame coded macro block lines maintaining a predetermined vertical interval. Whenever the coding for respective frames is finished, the forcibly intra-frame coded macro block lines are shifted downward by one macro block, which allows the original image to be restored relatively rapidly. Furthermore, the coding direction of macro blocks is established as the vertical direction. Vertical coding permits the amount of data for respective macro blocks to stay uniform and, thus, facilitates control of an associated transmission buffer in the video processing system.

REFERENCES:
patent: 5260783 (1993-11-01), Dixit
patent: 5365271 (1994-11-01), Asano

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