Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Patent
1996-03-22
1998-07-21
Tran, Thai
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
386 47, H04N 592
Patent
active
057845271
ABSTRACT:
A system and method for handling errors encountered in an audio/video data stream during playback. In one application, the audio/video data stream originates from an MPEG (e.g., Motion Pictures Expert Group) source and is a playback file of the MPEG format. Upon receiving an error interrupt originating from a hardware video processor unit, the novel system executes a group of predetermined error handling processes. A playback error can result from bad data within the playback file's data stream, the data bus, or other transmission error. One error recovery process used by the novel system causes the playback system to skip B and P frames until an I frame is reached which is processed normally and playback resumes. Another error recovery process causes the playback system to seek forward a predetermined number of seconds and/or frames to resume normal playback in order to avoid a bad media sector. A third error recovery process causes the playback system to seek forward to a next sequence header to resume normal playback. The processes are performed in a novel error sequence in which repeat errors are handled by different processes. Back-to-back errors occurring outside a predetermined time or data window are not considered repeat errors and reinitialize the error sequence. If the error sequence fails to avoid the error, the user or viewer is informed that the playback file may be non-MPEG compliant and playback is temporarily terminated.
REFERENCES:
patent: 4969039 (1990-11-01), Koga et al.
patent: 5668916 (1997-09-01), Fujinami
Cirrus Logic Inc.
Nguyen Huy
Shaw Steven A.
Tran Thai
LandOfFree
System and method for error handling during playback of an audio does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for error handling during playback of an audio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for error handling during playback of an audio will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1655698