Video signal recording and/or reproducing apparatus

Details Video signal recording and/or reproducing apparatus Video signal recording and/or reproducing apparatus

1987-08-19

1989-04-18

Nussbaum, Marvin L.

Dynamic magnetic information storage or retrieval

Record editing

358320, 360 142, 360 27, 360 331, G11B 2110, G11B 2710, H04N 5782

Patent

active

048232068

ABSTRACT:
In a video signal recording and/or reproducing apparatus including four magnetic heads mounted on a rotary drum for forming four parallel recording tracks in a repeating sequence on a recording medium with each track having an azimuth gap angle different from the azimuth gap angles of the next adjacent tracks; pilot signals having different frequencies are recorded in a superimposed manner upon the information signals recorded by the four magnetic heads, respectively, and, upon reproducing, tracking control is effected so as to ensure that the magnetic heads which recorded the pilot signals with different respective frequencies are used to reproduce the signals recorded in the respective recording tracks so that a period of a timing signal, for example, a horizontal synchronizing signal, contained in the reproduced signal will not be disturbed upon switching from one to another of the magnetic heads in the reproducing mode.

REFERENCES:
patent: 4563714 (1986-01-01), Takeuchi
patent: 4669005 (1987-05-01), Takayama et al.
patent: 4680648 (1987-07-01), Takayama

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