Moving device for an optical recording system in a high density

Details Moving device for an optical recording system in a high density Moving device for an optical recording system in a high density

1984-09-25

1988-03-08

Psitos, Aristotelis M.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369239, 369 56, 369 98, 369 44, G11B 700, G11B 2108

Patent

active

047302984

ABSTRACT:
A high density spiral track forming apparatus according to the present invention includes 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: 3716845 (1973-02-01), Chaffin, III
patent: 4190860 (1980-02-01), Somers et al.
patent: 4328506 (1982-05-01), Yoshida et al.
patent: 4481613 (1984-11-01), Yokota
patent: 4519056 (1985-05-01), Kimoto et al.
patent: 4530083 (1985-07-01), Ishihara
patent: 4546461 (1985-10-01), Isobe
patent: 4615023 (1986-09-01), Imada et al.
K. Sano et al., Television Gakkaishi, vol. 37, No. 6, 1983, p. 482 to p. 485, sections 1 to 3.3 inclusive--copy and translation provided by applicant.
JP application 13818163--Yuski et al--copy and English translation provided by applicant, no date thereon.

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