Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Patent
1979-05-15
1981-03-24
Hecker, Stuart N.
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
360 10, 360 78, 369 43, 369213, G11B 2100
Patent
active
042582334
ABSTRACT:
In a video disc player, a carriage is subject to translatory motion in correlation with radial motion of a playback stylus relative to a disc record. A stylus arm carrying the stylus at one end thereof has the other end pivotally secured to the carriage. A permanent magnet is mounted on the stylus arm near its free end. A pair of spaced coils having non-magnetic cores are disposed on the carriage such that the stylus arm-mounted magnet is interposed therebetween. The coils are selectively energized to change the radial location of the stylus relative to the record.
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patent: 4170783 (1979-10-01), Tajima
patent: 4183059 (1980-01-01), Palmer
Hecker Stuart N.
Kulkarni D. A.
McElheny Jr. Donald
RCA Corporation
Tripoli J. S.
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