Method and apparatus for facilitating reverse playback

Details Method and apparatus for facilitating reverse playback Method and apparatus for facilitating reverse playback

2007-01-16

2007-01-16

Boccio, Vincent F. (Department: 2621)

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

C386S349000

Reexamination Certificate

active

09666257

ABSTRACT:
A method and apparatus for processing recorded coded audiovisual data to facilitate reverse playback permits the user to play back recorded material in a temporally reversed manner at speeds of at least 1X or greater by storing the decoded frames in a graphics accelerator memory of a recording system. By storing decoded MPEG video frames representing the audiovisual data in the graphics accelerator's memory, it is possible to display all the frames of a group of pictures GOP in reverse order. Instead of using the memory of a graphics accelerator, the apparatus may also be configured to have sufficient space available in memory to store the decoded MPEG video frames. In either configuration, reverse playback may be effectuated with a much finer temporal granularity than what is currently achievable by conventional video recording apparatuses.

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patent: 5857083 (1999-01-01), Venkat
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patent: 6369855 (2002-04-01), Chauvel et al.
patent: 6754274 (2004-06-01), Park

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