Video coding apparatus

Details Video coding apparatus Video coding apparatus

1996-11-04

1998-09-08

Britton, Howard W.

Television

Bandwidth reduction system

Data rate reduction

348405, H04N 750

Patent

active

058052224

ABSTRACT:
A video coding apparatus for performing predictive coding of digital video input signals. The apparatus employs a resolution selection controller that selects picture resolution to be used in coding of a source picture of a current frame, according to coding information in a previous frame. Such coding information includes quantizer step size, amount of coded data, and buffer occupancy. Before being supplied to a coding unit, the source picture is sent to a resolution converter, where the source picture is converted to gain the resolution selected by said resolution selection controller. The coding unit then encodes the source picture with the selected picture resolution.

REFERENCES:
patent: 5477272 (1995-12-01), Zhang
patent: 5565925 (1996-10-01), Kinouchi
patent: 5640198 (1997-06-01), Makiyama
Patent Abstracts of Japan, Appln. No. 07-030901, Jan. 31, 1995.

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