Dynamic magnetic information storage or retrieval – Record editing
Patent
1980-09-23
1983-07-19
Konick, Bernard
Dynamic magnetic information storage or retrieval
Record editing
360 73, 360 744, G11B 2700, H04N 578
Patent
active
043946941
ABSTRACT:
An editing system employing a video tape recorder (VTR) of this type in which a rotary magnetic video head is attached to a bi-morph leaf or the like so that the VTR can perform in any one of a plurality of special reproducing modes such as a slow motion mode, fast motion mode or the like without the generation of any guard band noise includes a helical scan VTR, which is adapted to carry out the special reproduction modes and is used for reproducing video signals from an original tape, the helical scan video tape recorder including a time code reader for reading out time code signals recorded on the original tape, a reference time generator, which may be another VTR, for generating a reference time code, a memory for storing certain of the time code signals corresponding to an in-point of the original tape (that is, a starting point for playing information signals recorded on the video tape), a VTR controller for setting the direction and speed of travel of the video tape at the in-point, and a central processing unit for stopping the video tape at a pre-roll point with the distance between the in-point and pre-roll point being determined as a function of the set direction and speed of travel of the video tape at the in-point so that during an editing operation, the pore-roll point is changed in accordance with the reproduction mode requested in the editing range, and the reproduction mode used, namely, the tape speed used, after the editing range, is changed based upon data previously stored in the memory during a trial run editing operation.
REFERENCES:
patent: 3911488 (1975-10-01), Wood et al.
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patent: 4115819 (1978-09-01), Shigeta
patent: 4163263 (1979-07-01), Rotter
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patent: 4195317 (1980-03-01), Stratton
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patent: 4267564 (1981-05-01), Flores
patent: 4272790 (1981-06-01), Bates
patent: 4318140 (1982-03-01), Shigeta
Ninomiya Ichiro
Takayama Jun
Eslinger Lewis H.
Konick Bernard
McElheny Jr. Donald
Sinderbrand Alvin
Sony Corporation
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