Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2005-08-19
2009-08-25
An, Shawn (Department: 2621)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C375S240230, C375S240250, C375S240260, C375S240280, C382S235000, C382S246000, C382S233000
Reexamination Certificate
active
07580462
ABSTRACT:
A method comprises determining a plurality of time intervals Tp and Tn within a variable bit rate (VBR) representation of an image sequence. The time intervals Tp are those in which a number of blocks of information per unit time is greater than a baseline value. The time intervals Tn are those in which a number of blocks of information per unit time is less than the baseline value. A second representation of the image sequence is created in which some blocks of information Bp are removed from the time intervals Tp and interlaced with blocks of information Bn in the time intervals Tn to reduce a variation in a number of blocks of information per unit time between the time intervals Tp and Tn.
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“International Search Report” for International Patent Application PCT/US03/40186, Oct. 6, 2004.
Ansari Ahmad
Costa Pierre
Erickson John Robert
An Shawn
AT&T Intellectual Property 1, L.P.
Brinks Hofer Gilson & Lione
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