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Conferences > ODS > 1994 > TuA > TuA3

Pit Depth Encoded Memories

David S. Marx, Demetri Psaltis, and Gabriel Sirat

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Abstract

The depth of focus of current optical disk players is between 2 and 3μm.1 By varying the depth of a pit within the limits of the depth of focus, we can squeeze more information into each pit without any loss of pit density. For example, if the pit depth is varied in 0.1μm steps, then each pit can represent between 4 and 5 bits of information.

© 1994 Optical Society of America

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