Dynamic magnetic information storage or retrieval – Record editing
Patent
1979-09-06
1981-09-01
Moffitt, James W.
Dynamic magnetic information storage or retrieval
Record editing
360 70, 360 77, H04N 578
Patent
active
042875382
ABSTRACT:
In an apparatus for reproducing video or other information signals recorded in successive parallel tracks extending obliquely on a magnetic tape or other record medium which is adapted to be longitudinally advanced, a magnetic head or transducer is movable in the direction generally along the tracks for reproducing the signals recorded therein and is mounted or supported by a bi-morph leaf or other transducer deflecting device which is operative, in response to the reception of an electrical drive signal, for deflecting the transducer or head in a direction transverse to the direction along the tracks so as to follow a desired one of the tracks in moving from one end to the other end of such desired track, a first signal is produced in correspondence to the deflection of the transducer deflecting device needed to cause the transducer to follow the desired track at a predetermined position therealong, and a second signal is produced in correspondence to the following value: ##EQU1## in which n is the ratio of the tape speed during reproducing to the tape speed during recording, d is percentage of the distance along each of the tracks from said one end thereof to said predetermined position therealong, and m is an integer that is no greater than n and no less than n-1. A control signal is produced on the basis of the relation between the foregoing first and second signals, and the resulting control signal is also applied to the transducer deflecting device for determining the next desired track to be followed by the transducer.
REFERENCES:
patent: 4163993 (1979-08-01), Ravizza
Sakamoto Hitoshi
Wakisaka Yoshiaki
Eslinger Lewis H.
McElheny Jr. Donald
Moffitt James W.
Sinderbrand Alvin
Sony Corporation
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