Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Reexamination Certificate
2007-04-03
2007-04-03
Tran, Thai (Department: 2621)
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
C386S349000, C386S349000, C386S349000, C386S349000, C725S109000
Reexamination Certificate
active
10420371
ABSTRACT:
A method and apparatus for creating an expanded functionality digital video disc (DVD) creates an enhanced DVD with index tables for the program streams on the DVD. Index tables point to key locations in an MPEG program stream with each entry in the index table set to point to a group of pictures (GOP) header in the MPEG stream. The invention can select GOP headers at predefined intervals, semi-random intervals, or at key locations. The invention creates an index table either during storage of a program stream on a hard disk, during a scan of program material already stored on a local hard disk, or while program material is being read out of the hard disk and written to a DVD. The invention adds a new directory to the DVD structure and writes the index table(s) for the stream(s) into the directory. The new directory and its content are only recognized by invention-enabled DVD players and DVRs. Each media stream file in the VIDEO_TS and AUDIO_TS directories has a corresponding index table file in the new directory. Alternatively, the index table files could be stored in the respective VIDEO_TS and AUDIO_TS directories. When an enhanced DVD created by the invention is inserted into a invention-aware DVR or DVD player, the index table files on the DVD are utilized to enable smooth special effects functionality.
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Otala Tapani
Vannier Eric
Hickman Palermo & Truong & Becker LLP
TiVo Inc.
Tran Thai
Vent Jamie J
Wong Kirk D.
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