Hybrid global/local bit rate control

Details Hybrid global/local bit rate control Hybrid global/local bit rate control

1998-01-08

1999-11-16

Britton, Howard

Television

Bandwidth reduction system

Data rate reduction

348405, 348419, H04N 726

Patent

active

059867124

ABSTRACT:
A current picture partitioned into a plurality of partitions is received and encoded by determining a total target number of encoded bits for the current picture to avoid overflow or underflow of a video buffer verifier (VBV) maintained by an encoder. The encoder determines a local target number of encoded bits for each partition of the current picture, in accordance with the total target number. A plurality of partition encoders encode each partition, respectively, in accordance with the local target number for said each partition, wherein each partition encoder maintains a local VBV having a local VBV fullness, to monitor local underflow or overflow conditions.

REFERENCES:
patent: 5686964 (1997-11-01), Tabatabai
patent: 5781237 (1998-07-01), Fukada
patent: 5838834 (1998-11-01), Saito

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