Optical Disk Technology for Permanent and Erasable Memory Applications

Digital recording on a state-of-the-art magnetic memory is now achieving an area density of 10 mm square for one flux reversal. Use of a defraction-limited laser beam spot applied to an optical memory can reduce the area requirement by a factor of 10 or more. The advent of nonreversible and reversible process optical memories creates the possibility of applying this technique to the design of a high-density, broadcast-quality video recorder. Both processes use tellurium-tellurium oxide on a substrate. A composite video digital recorder with 1300 still-frame capacity on a 20-cm nonreversible process disk is being developed.

Print ISSN

0036-1682

Published

1985-02

Content type

Original Research

DOI

10.5594/J14101