Recording and reproducing apparatus for a video tape recorder

Details Recording and reproducing apparatus for a video tape recorder Recording and reproducing apparatus for a video tape recorder

1983-09-09

1986-09-23

Richardson, Robert L.

Dynamic magnetic information storage or retrieval

Record editing

358341, 358343, 360 102, H04N 5782

Patent

active

046139125

ABSTRACT:
In a video tape recorder of the two-head helical scan system, a wrap angle of a magnetic tape around a rotary head mechanism is set to more than 180.degree., e.g. about 220.degree., and an overlap recording section is provided in a recording track. A time compressed audio signal and a pilot signal for the tracking control are recorded in the overlap recording section. A frequency modulated luminance signal, low-frequency converted carrier color signal, frequency modulated audio signal, and pilot signal are mixed, and this mixed signal is recorded in another section of the recording track. Regulator means is provided to conjointly set the recording current levels of the low-frequency converted carrier color signal, frequency modulated audio signal, and pilot signal which are mixed to the frequency modulated luminance signal and recorded. The recording current levels of the time compressed audio signal and the frequency modulated luminance signal are respectively and individually set. When different kinds of magnetic tapes (e.g. metal powder tape and metal evaporated tape) are used, a level switching circuit is provided to switch the recording level of the signal of which the low-frequency converted carrier color signal, frequency modulated audio signal and pilot signal were mixed in accordance with the kinds of tapes.

REFERENCES:
patent: 4390906 (1983-06-01), Furumoto et al.

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