Video tape recorder

Details Video tape recorder Video tape recorder

H - Electricity

04

N

352/18

H04N 5/782 (2006.01) G11B 20/02 (2006.01) H04N 5/92 (2006.01) H04N 9/802 (2006.01)

Patent

CA 1191599

VIDEO TAPE RECORDER ABSTRACT OF THE DISCLOSURE 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 mutli- plex 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 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.

392375

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