Minimum tracking force stylus

Details Minimum tracking force stylus Minimum tracking force stylus

1980-04-10

1982-07-20

Haroian, Harry N.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specified detail of transducer assembly support structure

3581286, 369251, G11B 310

Patent

active

043409563

ABSTRACT:
In a video disc player of the type having a signal pickup stylus engaging a disc record for recovering prerecorded information signals, an electromechanical transducer is arranged to cooperate with the signal pickup stylus to regulate the bearing pressure between the stylus and the disc in response to the signal strength of the recovered signal. The arrangement tends to extend the life of the stylus.

REFERENCES:
patent: 2478223 (1949-08-01), Argabrite
patent: 3247404 (1966-04-01), Batsch
patent: 3744802 (1973-07-01), Bowerman
patent: 3787616 (1974-01-01), Falk et al.
patent: 3830505 (1974-08-01), Rabinow
patent: 3963861 (1976-06-01), Crooks
patent: 3993863 (1976-11-01), Leedom
patent: 4138121 (1979-02-01), Nakajima et al.
patent: 4152727 (1979-05-01), Tatsuguchi et al.
patent: 4162511 (1979-07-01), Toda et al.
patent: 4164756 (1979-08-01), Toda et al.
patent: 4173348 (1979-11-01), Dholakia
patent: 4176378 (1979-11-01), Toda et al.
"Piezoelectric Transducer Materials", by Jaffe et al., Proceedings of IEEE, vol. 53, #10, Oct. 1965, pp. 1372-1386.
"Piezo Films & Tiny Silicon-Based Relays Promise Innovative Actuator Designs", EDN, Nov. 20, 1979, pp. 111-116.

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