Method and apparatus for recording video and audio signals in su

Details Method and apparatus for recording video and audio signals in su Method and apparatus for recording video and audio signals in su

1987-10-20

1988-08-23

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Record editing

360 32, 358343, H04N 578, H04N 576

Patent

active

047665050

ABSTRACT:
A method and apparatus for recording and reproducing an information signal comprised of a video signal and an audio signal in a plurality of successive parallel tracks on a magnetic tape, each track including a first audio section followed by a video section, by converting the audio signal into a PCM digital audio signal; compressing the PCM audio signal; frequency modulating the compressed PCM audio signal to produce an output PCM audio signal; and recording the output PCM audio signal and the video signal in the plurality of successive tracks such that one field interval of the video signal is recorded in the video section of each track and the output PCM audio signal corresponding to one field interval of the video signal is recorded in the audio section of each track and corresponds to the video signal in the leading portion of the previous successive track and the video signal in the trailing portion of the previous alternate track, wherein the audio signal recorded in each track is delayed by a maximum of 1.5 field intervals from the video signal to which it corresponds.

REFERENCES:
patent: 4224642 (1980-09-01), Mawatari et al.
patent: 4233627 (1980-11-01), Sugihara
patent: 4353098 (1982-10-01), Heinz et al.
patent: 4383950 (1981-12-01), Taniguchi et al.
patent: 4390906 (1983-06-01), Furumoto et al.
patent: 4404602 (1983-09-01), Hoshimi et al.
"Digital Video Recording-Some Experimentations & Future Considerations", Monzono et al., SMPTE Journal (Sep. 80), vol. 89, No. 9, pp. 658-662.

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