Method and device for transcoding video signals

Details Method and device for transcoding video signals Method and device for transcoding video signals

1996-02-14

1998-09-08

Chin, Tommy P.

Television

Bandwidth reduction system

Data rate reduction

348419, 348423, H04N 712, H04N 1102, H04N 1104

Patent

active

058052240

ABSTRACT:
A method of transcoding coded video signals and a corresponding device for implementing this method are described. The device comprises decoding and encoding sub-assemblies (201, 202) and, within the encoding sub-assembly, quantizer (23) and bitrate controller. This bitrate controller comprise, before the quantizer (23), circuit for computing a local target value for encoding each sub-picture of the images to which video signals correspond and circuit for controlling the step size during the quantizing step.

REFERENCES:
patent: 5410351 (1995-04-01), Kojima
patent: 5515105 (1996-05-01), Lim
patent: 5537440 (1996-07-01), Eyuboglu et al.
patent: 5544266 (1996-08-01), Koppelmans et al.
patent: 5565924 (1996-10-01), Haskell et al.
patent: 5606371 (1997-02-01), Gunnewiek et al.

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