Dynamic information storage or retrieval – With servo positioning of transducer assembly over track...
Patent
1981-04-06
1983-05-03
Psitos, Aristotelis M.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
369 61, 369126, 369219, G11B 338
Patent
active
043822924
ABSTRACT:
In a video disc player, a stylus arm, having a track-following stylus at one end thereof, has its other end secured to a pickup cartridge by means of a compliant member. A conductive flylead disposed in the cartridge provides an electrical connection between an electrode incorporated in the stylus and a terminal disposed in the cartridge. The pickup cartridge is removably received in an arm carriage which is translated along a path disposed radially of the disc record during playback. Reception of the cartridge on the carriage establishes an electrical contact between the cartridge terminal and signal pickup circuits in the player. The pickup circuits additionally serve to sense a stylus position representative capacitance formed between the flylead and a second electrode mounted on the cartridge adjacent thereto.
REFERENCES:
patent: 3963861 (1976-06-01), Crooks
patent: 3963864 (1976-06-01), Fuhrer
patent: 4030124 (1977-06-01), Allen
patent: 4163994 (1979-08-01), Sakamoto et al.
patent: 4258233 (1981-03-01), Simshauser
patent: 4280023 (1981-07-01), Christopher
Kulkarni D. A.
Psitos Aristotelis M.
RCA Corporation
Tripoli J. S.
Whitacre E. M.
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