Hypothetical reference decoder for compressed image and video

Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal

Reexamination Certificate

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Details

C375S240000, C375S240010, C375S240120

Reexamination Certificate

active

10600163

ABSTRACT:
One method for analyzing a bitstream having a plurality of compressed pictures comprises computing an initial arrival time and a final arrival time of a compressed picture, wherein the initial arrival time is equal to an earlier of the final arrival time of the immediately previous compressed picture or equal to a sum of a fixed time plus a sum of removal delays of all of the compressed pictures between the first compressed picture following the buffering period message and the compressed picture, including the compressed picture, and wherein the final arrival time is equal a sum of the initial arrival time and a time calculated based on the number of bits associated with the compressed picture at the bit rate; and verifying that a difference between the final removal time and the initial arrival time does not exceed the time for reaching the buffer size at the bit rate.

REFERENCES:
patent: 5481543 (1996-01-01), Veltman
patent: 6115072 (2000-09-01), Vuong et al.
patent: 7058081 (2006-06-01), Yoshida et al.

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