Record carrier having an optically readable information structur

Details Record carrier having an optically readable information structur Record carrier having an optically readable information structur

1983-12-27

1985-12-03

McElheny, Jr., Donald

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

369 48, 369109, G11B 700

Patent

active

045569673

ABSTRACT:
A record carrier is described which has an optically readable information structure in which information areas of adjacent information track portions have different phase depths, and an apparatus for reading said record carrier. By a suitable choice of the phase depths and by an electronic phase shift of the signals supplied by the read detectors, cross-talk between adjacent tracks can substantially be eliminated.

REFERENCES:
patent: 4161752 (1979-07-01), Basilico
patent: 4209804 (1980-06-01), Dil
patent: 4310916 (1982-01-01), Dil
patent: 4325135 (1982-04-01), Dil et al.

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