Video-signal switching apparatus
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United States of America Patent
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Jun 12, 2012
Grant Date -
Oct 1, 2009
app pub date -
Mar 26, 2009
filing date -
Mar 28, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A first buffer analyzer receives attribute information (a) of a video signal (A) from a stream buffer (A) to determine an encoded picture type after correction and a generated encoding amount after correction for a switch terminating measure. A second buffer analyzer receives attribute information (b) of a video signal (B) and final buffer-state information after the switch terminating measure from a stream buffer (B) to determine an encoded picture type after correction and a generated encoding amount after correction for a switch starting measure. A re-encoder/re-quantizer (A) and a re-encoder/re-quantizer (B) perform the switch terminating measure and the switch starting measure on the video signals (A) and (B), respectively, based on the correction information from the first and second buffer analyzers.
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