Dynamically switching quant matrix tables within an MPEG-2...

Pulse or digital communications – Bandwidth reduction or expansion

Reexamination Certificate

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C375S240050, C375S240070, C375S240040, C375S240060, C375S240030, C382S251000, C382S235000

Reexamination Certificate

active

06999511

ABSTRACT:
A digital video encoder is presented adapted for dynamically switching between sets of quantizer matrix tables without pausing encoding of a stream of video data. Two or more sets of quantizer matrix tables are held at the encoder's quantization unit and compressed store interface for dynamically switching between sets of quant matrix tables at a picture boundary of the sequence of video data, i.e., without stopping encoding of the sequence of video data. Further, while one set of matrix tables is being employed to quantize the stream of video data, the encoder can be updating or modifying another set of quantization matrix tables, again without stopping encoding of the sequence of video data.

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