Television – Synchronization – Locking of video or audio to reference timebase
Patent
1993-07-23
1994-09-27
Groody, James J.
Television
Synchronization
Locking of video or audio to reference timebase
348515, 358341, 360 191, H04N 504
Patent
active
053510925
ABSTRACT:
A method for synchronization of a digital audio signal sampled at a standard audio frequency with the corresponding digital video signal sampled at a standard video frequency associates an integer number of samples of the digital audio signal with each video field of the digital video signal. The number of audio samples per video field is determined by the audio sample rate rounded up to the nearest integer. Every N video fields where the number of digital audio samples is an integer value, the digital audio signal is resynchronized with the digital video signal by repeating the digital audio samples at the end of video field N that correspond to video field N+1. At reception the same digital audio samples are skipped at the end of video field N.
REFERENCES:
patent: 4233627 (1980-11-01), Sugihara
patent: 4825303 (1989-04-01), Yablonski et al.
patent: 4851909 (1989-07-01), Noske et al.
patent: 4855827 (1989-08-01), Best
patent: 4928185 (1990-05-01), Kobayashi et al.
patent: 4937686 (1990-06-01), Arai et al.
patent: 4953168 (1990-03-01), Odaka
patent: 5043830 (1991-08-01), Nobuhiro
patent: 5101274 (1992-03-01), Yoshimura et al.
Poimboeuf Michael
Windrem Kevin D.
Gray Francis I.
Groody James J.
Lee Michael H.
The Grass Valley Group Inc.
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