METHOD AND APPARATUS FOR USING AN ULTRA-LOW DELAY MODE OF A HYPOTHETICAL REFERENCE DECODER
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United States of America Patent
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Issued Date -
Jan 1, 2015
app pub date -
Dec 20, 2012
filing date -
Feb 8, 2012
priority date (Note) -
Abandoned
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Abstract
A method and apparatus are provided for using an ultra-low delay mode of a hypothetical reference decoder. The method is provided in a video decoder, and includes defining (320) a hypothetical reference decoder timing model to specify timing constraints based on an arrival time and a removal time of hypothetical reference decoder access units included in a video bitstream with respect to a hypothetical reference decoder buffer. The hypothetical reference decoder access units are selected from among a slice access unit and a picture access unit. The method also includes evaluating (325) the video bitstream for conformance to requirements of the hypothetical reference decoder buffer based on the hypothetical reference decoder timing model.
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