Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Reexamination Certificate
2008-05-27
2008-05-27
Tran, Thai Q. (Department: 2621)
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
C386S349000, C386S349000, C386S349000, C348S423100, C348S425400, C348S466000, C348S467000, C370S503000, C375S240280
Reexamination Certificate
active
10079992
ABSTRACT:
The audio-video synchronization process ensures continuity of displayed AV data. To initialize the process, a transport processor determines whether an occupancy criterion of a buffer storing received audio and video frames has been met. If the criterion is met, the transport processor obtains an initial time stamp value from an initial frame, and a subsequent time stamp value from a subsequent frame. Initial and subsequent parameters are computed from these respective time stamp values, and are compared against each other. If the parameters coincide, the frame is valid, and corresponding audio or video frames may be decoded and displayed. If the parameters do not coincide, a recovery process is initiated. In either event, the invention makes it possible to achieve audio-video synchronization for both live and playback modes of a digital video recorder (DVR).
REFERENCES:
patent: 5537409 (1996-07-01), Moriyama et al.
patent: 5668601 (1997-09-01), Okada et al.
patent: 5784527 (1998-07-01), Ort
patent: 6130987 (2000-10-01), Tanaka
patent: 6262777 (2001-07-01), Brewer et al.
patent: 6842580 (2005-01-01), Ueda et al.
patent: 6931071 (2005-08-01), Haddad et al.
patent: 6952521 (2005-10-01), Kelly et al.
patent: 6996326 (2006-02-01), Koshino et al.
Casavant Scott
Lee Hsien-Hua
Yap Adrian
Hasan Syed Y.
The DIRECTV Group Inc.
LandOfFree
Audio-video synchronization for digital systems does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Audio-video synchronization for digital systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Audio-video synchronization for digital systems will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3922403