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Proceedings Paper

High Density Format For Sperry/Information Storage Inc. Second Generation Optical Drives
Author(s): George S. Moore
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Paper Abstract

A new recording format for second generation optical disks has been developed that promises to yield capacities and data rates significantly greater than those offered by first generation systems. This format is a combination of a high linear density modulation scheme, made possible by the use of prepit servo techniques, and an offset track geometry. This geometry yields a reduction of track spacing, as compared to non-offset structures, and allows the track spacings to be further reduced as a function of increasing radius. These reductions permit drives using this CAV format to achieve the capacity improvements ascribed to CLV techniques, without CLV's attendant liabilities. Capacities in excess of 550 MB per 5 1/4" surface are projected with this format.

Paper Details

Date Published: 14 January 1987
PDF: 9 pages
Proc. SPIE 0695, Optical Mass Data Storage II, (14 January 1987); doi: 10.1117/12.936842
Show Author Affiliations
George S. Moore, Information Storage Inc. (United States)


Published in SPIE Proceedings Vol. 0695:
Optical Mass Data Storage II
Robert P. Freese; Albert A. Jamberdino; Maarten R. de Haan, Editor(s)

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