Video tape recorder with audio mode recording

Details Video tape recorder with audio mode recording Video tape recorder with audio mode recording

1981-12-15

1984-04-24

McElheny, Jr., Donald E.

Dynamic magnetic information storage or retrieval

Recording or reproducing an information signal and a control...

358341, 360 331, 369 49, H04N 5782

Patent

active

044451512

ABSTRACT:
In an apparatus for recording and/or reproducing a television signal with multiplex audio signals, a pilot signal is recorded on one or both of the audio tracks of a video tape in a manner to identify the mode of the multiplex audio signals and each pilot signal is detected to establish such mode when reproducing. For example, the frequency of the pilot signal may be changed for identifying different modes of the multiplex audio signals, such as, the bilingual mode and the stereo-phonic mode, with the pilot signal of selected frequency being recorded on one of the audio tracks, or the pilot signal having a certain frequency is recorded on one of the audio tracks in the case of the bilingual mode, and on the other audio track of the tape in the case of the stereo-phonic mode. In still another embodiment, the pilot signal is recorded in both audio tracks of the tape and the phase relation of the recorded pilot signals is varied to identify the mode of the multiplex audio signals.

REFERENCES:
patent: 4013841 (1977-03-01), Ohkubo et al.
patent: 4303950 (1981-12-01), Taniguchi et al.
patent: 4353090 (1982-10-01), Broadbent
patent: 4356510 (1982-10-01), Nakayama
patent: 4361849 (1982-11-01), Bolger
patent: 4368354 (1983-01-01), Furihata et al.
patent: 4390906 (1983-06-01), Furumoto et al.

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