Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record
Patent
1979-10-01
1981-12-29
Wolff, John H.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the record
360 33, G11B 1506
Patent
active
043085636
ABSTRACT:
Position control apparatus is provided for a magnetic information device that uses a magnetic recording medium having a readable series of pulses recorded along a serial path thereon. For example, the magnetic information device could be a video tape recorder and the magnetic recording medium could be a video tape with a series of control pulses recorded upon it. The position control apparatus includes a reading device for serially reading the recorded pulses and for producing a corresponding train of output pulses, a counter for counting the output pulses and for providing a count value corresponding to a position on the recording medium, a memory for settably storing a value corresponding to a desired position on the recording medium, a comparator for comparing the count value from the counter and the stored value from the memory, and a search device which, upon selective operation thereof, is operative to cause the reading device to serially read the recorded pulses until a predetermined relation is obtained between said two values to be compared by the comparator.
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National Technical Report, vol. 19, No. 3, Jun. '73, VTR-Automatic Program Selector for VTR-Yasu et al.
Gohda Seiichi
Tajiri Akira
Eslinger Lewis H.
Sinderbrand Alvin
Sony Corporation
Wolff John H.
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