Capacitance disc information retrieval system

Details Capacitance disc information retrieval system Capacitance disc information retrieval system

1991-06-24

1992-12-29

LaRoche, Eugene R.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specified detail of transducer assembly support structure

369170, 369249, G11B 2116, G11B 310

Patent

active

051757249

ABSTRACT:
A system for retrieving information on a random basis from a disc having the information thereon in a spiral path around the disc. The system includes a turntable rotatable about a central spindle and adapted to support the disc thereon. An arm housing is fixedly mounted over the turntable and contains printed circuit boards having some of the electrical circuitry for the system. Also in the arm housing is a rectangular frame like cartridge holder which supports a cartridge having a stylus therein. The stylus is adapted to ride on the disc to read out the information from the disc. A piston is connected to the cartridge holder and extends through the arm housing. A motor is connected to the piston and is adapted to move the piston so that the cartridge holder is moved with respect to the arm housing and the stylus moves radially along the disc. The motor moves the stylus over the short distance of the radius so as to quickly and easily obtain random access to the information in the disc.

REFERENCES:
patent: 4079943 (1978-03-01), Morita et al.
patent: 4120504 (1978-10-01), Brecht
patent: 4151998 (1979-05-01), Kurtin et al.
patent: 4364121 (1982-12-01), Stewart
patent: 4418408 (1983-11-01), Taylor
patent: 4462097 (1984-07-01), Janada et al.
patent: 4587646 (1986-05-01), Graham
H. N. Crooks, "The RCA SelectaVision Video Disc System" RCA Engineer, vol 26-9, Nov./Dec., 1981, pp. 10-12.
K. C. Kelleher "The Video Disc Signal Retrieval System" RCA Engineer, vol. 26-9, Nov./Dec. 1981.

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