Videodisc reader with longitudinally displaced turntable

Details Videodisc reader with longitudinally displaced turntable Videodisc reader with longitudinally displaced turntable

1980-12-03

1983-04-26

Faber, Alan

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369213, 369239, 369241, 369111, 310105, 318687, G11B 1700

Patent

active

043815561

ABSTRACT:
There is disclosed a device for displacing a video disk with respect to a reading head which includes the driving of a conductive disk by means of a video disk rotational motor. The conductive disk passes through the air gaps of two electromagnets located on either side of the displacement axis of a movable member supporting the rotational motor. By differentially energizing the electromagnets, a force is produced which provides for forward and backward movement of the complete movable member of the reader.

REFERENCES:
patent: 1212692 (1917-01-01), Ruckgober
patent: 3138669 (1964-06-01), Robinow
patent: 3391255 (1968-07-01), Gregg
patent: 3829612 (1974-08-01), Beyers
patent: 3963863 (1976-06-01), Malissin

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