Frictionless moving device for an optical recording system in a

Details Frictionless moving device for an optical recording system in a Frictionless moving device for an optical recording system in a

1988-03-04

1989-04-25

Psitos, Aristotelis M.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specified detail of transducer assembly support structure

369219, 369223, 369111, 369249, G11B 2116

Patent

active

048254320

ABSTRACT:
A high density spiral track forming apparatus according to the present invention a linear motion mechanism for moving an optical recording system in a radial direction of a disk-shaped substrate, and a length measurement machine for detecting the distance travelled by the optical recording system in the radial direction of the substrate disk. The apparatus further includes a velocity computing device for detecting the travel velocity of the optical recording system according to the detected result of the length measurement instrument, and a velocity control device which detects the difference between the travel velocity of the optical recording system which is detected by the velocity computing device and a predetermined velocity, and controls the linear motion mechanism so as to eliminate that difference.

REFERENCES:
patent: 3969574 (1976-07-01), Janseen et al.
patent: 4228326 (1980-10-01), Dakin et al.
patent: 4486870 (1984-12-01), Pettigrew et al.
patent: 4550347 (1985-10-01), Nakamuta
K. Sano et al., Television Gakkaishi, vol. 37, No. 6, p. 482 (1983) (with English translation).

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