Optical device for the recording and reading of data media and o

Details Optical device for the recording and reading of data media and o Optical device for the recording and reading of data media and o

1981-01-21

1983-06-07

Hecker, Stuart N.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 45, 369112, 369199, G11B 708

Patent

active

043874525

ABSTRACT:
The device makes it possible to optically inscribe and/or read at least two facing sides of disks in an optical memory system, whose disks are stacked. A linear motor displaces a mobile means incorporating recording-reading heads. These heads receive via a bidirectional optical connection data to be inscribed and coming from fixed light emitters-receivers. Each of the recording heads comprises two focusing lenses associated with one of the two facing sides of the disk. According to a first variant, the two sides can be read simultaneously, each of the lenses being associated with its own control device. In a second variant, a single control device is provided and the two focusing lenses are integral with one another, each side being read or inscribed in succession.

REFERENCES:
patent: 3314074 (1967-04-01), Becker
patent: 3381085 (1968-04-01), Johnson et al.
patent: 3774172 (1973-11-01), Silverman
patent: 3848095 (1974-11-01), Wohlmut et al.
patent: 4003059 (1977-01-01), Sugiura et al.
patent: 4015289 (1977-03-01), Kinjo et al.
patent: 4094010 (1978-06-01), Pepperl et al.
patent: 4125860 (1978-11-01), Ishii et al.
patent: 4138741 (1979-02-01), Hedlund et al.
patent: 4322838 (1982-03-01), Neumann
IEEE Spectrum, vol. 16, No. 2, Feb. 1979, G. C. Kenney et al., "An Optical Disk Replaces 25 mag tapes", pp. 33-38.
Patents Abstracts of Japan, vol. 1, No. 37, Apr. 18, 1977, p. 2100 E76 & JP-A-51 134,514 (Tsukada)(Nov. 22, 1976).
IBM Tech. Disc. Bulletin, vol. 15, No. 2, Jul. 1972, Armonk, N.Y., R. L. Garwin: "Optics for Beam Addressable Files", pp. 494-495.

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