Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Mechanism control by the control signal
Patent
1979-12-10
1982-03-23
Konick, Bernard
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Mechanism control by the control signal
G11B 708
Patent
active
043217010
ABSTRACT:
A device for providing access to information carried by a video disc comprises a fixed magnetic circuit having an air-gap which extends parallel to the radius of the disc. The access device is provided in addition with a low-weight moving system comprising at least one electric circuit forming a flat coil which is capable of sliding vertically within the air-gap and is so arranged that horizontal conductors are placed within the air-gap. Radial tracking and track-to-track transfer can be carried out by means of an electric circuit, at least one vertical conducting element of which is placed within the air-gap. Fast access is obtained by displacing this low-weight moving system.
REFERENCES:
patent: 3530258 (1970-09-01), Greg et al.
patent: 3881139 (1975-04-01), Inaba et al.
patent: 3969574 (1976-07-01), Janssen et al.
patent: 4092529 (1978-05-01), Aihara et al.
patent: 4129930 (1978-12-01), Dragt
patent: 4135206 (1979-01-01), Kleuters et al.
patent: 4190775 (1980-02-01), Sakurai et al.
Patents Abstracts of Japan, vol. 1, No. 8, Mar. 16, 1977, p. 329 E 76.
Arquie Louis
Bricot Claude
"Thomson-CSF"
Konick Bernard
McElheny Jr. Donald
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