Dynamic magnetic information storage or retrieval – Record editing
Patent
1982-07-21
1984-12-11
McElheny, Jr., Donald E.
Dynamic magnetic information storage or retrieval
Record editing
H04N 5782, G11B 2702
Patent
active
044881851
ABSTRACT:
An assemble editing system for a video tape recorder having first and second video heads disposed on a rotary disc at an interval of 180.degree.. A sub-head is disposed on the rotary disc at predetermined intervals with respect to the first and second video heads. In response to a recording pause operation, the supply of a video signal to the video heads is interrupted after a video track has been recorded on a magnetic tape by the first head, and thereafter the magnetic tape is rewound for a given time interval. Subsequently, the recording pause operation is released and the magnetic tape is driven in the forward direction. The output signal level of the sub-head which traces the video tracks recorded by the first and second video heads is examined. When the first video head traces the final video track formed thereby, the output signal level of the sub-head is lowered. In response to this, the supply of the video signal to the video heads is restarted at a timing that the first head completes to trace the final video track. A new video track is recorded by the second video head which is adjacent to the final video track recorded by the first video head. One of the special playback heads for slow and still reproduction can be used as the sub-head for assemble editing.
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patent: 3974522 (1976-08-01), Fukatsu et al.
patent: 4163262 (1979-07-01), Kaemmerer
patent: 4163263 (1979-07-01), Rotter
patent: 4280149 (1981-07-01), Bragas
patent: 4358797 (1982-11-01), Nishijima et al.
patent: 4389680 (1983-06-01), Gramling
patent: 4390908 (1983-06-01), Nakamura et al.
McElheny Jr. Donald E.
Tokyo Shibaura Denki Kabushiki Kaisha
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