Process for controlling the outflow rate of a coder of digital d

Details Process for controlling the outflow rate of a coder of digital d Process for controlling the outflow rate of a coder of digital d

1996-06-04

1998-03-03

Chin, Tommy P.

Television

Bandwidth reduction system

Data rate reduction

348405, 348466, H04N 712, H04N 1102, H04N 1104, H04N 700

Patent

active

057240990

ABSTRACT:
A process for controlling the output flow rate of a coder of digital data representative of sequences of images, the coding effected by the coder including a quantization stage of quantization parameter Q, the sequences of images being made up of successive groups of images. The process consists of determining, at the moment of the presence of the i group of images at the output of the coder, the quantization parameter Q(i+1) for the coding of the (i+1) group of images so that the flow rate at the output of the coder conforms with a version of a leaky bucket defined by a size M and by a leakage rate .lambda. in terms of the activity of the scene represented by the i group of images.

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IEEE/ACM Transactions on Networking, Apr. 1994, vol. 2, No. 2 pp. 176-180.
IEEE Transactions on Circuits and Systems for Video Technology, Dec. 1992, vol. 2, No. 4, pp. 361-372.

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