Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2011-04-12
2011-04-12
An, Shawn (Department: 2621)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C375S240250, C375S240260, C375S240270, C382S233000, C382S235000, C704S500000, C704S503000
Reexamination Certificate
active
07924929
ABSTRACT:
A method of testing audio/video synchronization comprising calculating a frequency of a device used to encode a digital stream based on program clock references calculating first time differences between audio decoding time stamps and actual audio decoding times; calculating second time differences between audio presentation time stamps and actual audio presentation times; calculating third time differences between video decoding time stamps and 4 actual video decoding times; and calculating fourth time differences between video presentation time stamps and actual video presentation times.
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Mani Murali
Meenakshisundaram Ramanathan
An Shawn
DLA Piper (LLP) US
Trident Microsystems (Far East) Ltd.
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