Apparatus for recording and/or reproducing digital video and aud

Details Apparatus for recording and/or reproducing digital video and aud Apparatus for recording and/or reproducing digital video and aud

1992-09-04

1994-05-24

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358341, 358343, H04N 595

Patent

active

053154010

ABSTRACT:
A digital video tape recorder for recording and reproducing digital video and digital audio signals in separate portions of at least one common record track is operable in an after-recording mode, for example, to record in different tracks a digital audio signal that is associated with a previously recorded digital video signal. Digital video and audio processors exhibit inherent time delays t.sub.2 and t.sub.21 when processing reproduced digital video and audio signals (t.sub.21 <t.sub.2); and, during a normal reproducing mode the digital audio signal is delayed by an amount substantially equal to t.sub.2 -t.sub.21 so that the reproduced digital video and audio signals are recovered in synchronism. This delay is reduced to a minimal amount when the apparatus operates in its after-recording mode. Conversely, if the digital video signal is recorded in the after-recording mode, the audio signal delay is increased such that the originally recorded digital audio signal and the after-recorded digital video signal are recovered in synchronism.

REFERENCES:
patent: 4313135 (1982-01-01), Cooper
patent: 4445187 (1984-04-01), Best
patent: 4703355 (1987-10-01), Cooper
patent: 4766505 (1988-08-01), Nakano et al.
patent: 5130812 (1992-07-01), Yamaoka

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