Transcoding method and device
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United States of America Patent
Stats
-
Sep 18, 2012
Grant Date -
Jan 31, 2008
app pub date -
Nov 9, 2005
filing date -
Nov 23, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An encoded, digital video input signal having a base signal and at least one differential extension signal is transcoded by determining a first piece of page data and a first piece of transform coefficient data from the base signal; determining one respective second piece of page data and one respective piece of transform coefficient data from the base signal; and determining one respective second piece of page data and one respective piece of transform coefficient data from at least one differential extension signal. A third piece of page data is generated from the first and at least one second piece of page data, and a third piece of transform coefficient data is generated from the first and at least one second piece of transform coefficient data using a weighted addition. An encoded, digital video output signal is generated from the third pieces of page data and transform coefficient data.
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