Optical disk using land and groove tracks

Details Optical disk using land and groove tracks Optical disk using land and groove tracks

1994-06-08

1997-07-15

Neyzari, Ali

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

3692754, 369 54, G11B 724

Patent

active

056489544

ABSTRACT:
In an optical disk comprising a recording plane having a spiral first track and a spiral second track, information being to be recorded into and/or reproduced from the first and second tracks, the first track is formed into a groove-like shape, the second track is formed between adjacent the first tracks and into a land-like shape, and the first and second tracks record informations in different modulation methods.

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