Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Patent
1994-04-28
1996-12-10
Chin, Tommy P.
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
386104, H04N 591, H04N 576
Patent
active
055836526
ABSTRACT:
Method and system for providing user-controlled, continuous, synchronized variable-speed playback of a previously recorded digital audio/video presentation. The user directly controls the rate of playback and the audio and video remain synchronized. The audio is expanded or compressed using the time domain harmonic scaling method so that the pitch of the audio remains undistorted. Synchronization is maintained by allowing one clock to serve as the master time clock for the system. The clocks which can serve as the master time clock include the audio decoder clock, the video decoder clock, and the system clock. The invention is particularly useful in multimedia display systems designed to display MPEG data.
REFERENCES:
patent: 4794465 (1988-12-01), Van Luyt et al.
patent: 4994912 (1991-02-01), Lumelsky et al.
patent: 5045940 (1991-09-01), Peters et al.
patent: 5420801 (1995-05-01), Dockter et al.
Chin Tommy P.
International Business Machines - Corporation
Lee Y.
Phillips Steven B.
LandOfFree
Synchronized, variable-speed playback of digitally recorded audi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Synchronized, variable-speed playback of digitally recorded audi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Synchronized, variable-speed playback of digitally recorded audi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-428061