Optical disk having an evaluation pattern for evaluating the opt

Details Optical disk having an evaluation pattern for evaluating the opt Optical disk having an evaluation pattern for evaluating the opt

1997-04-10

1999-04-06

Neyzari, Ali

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

3692753, 369 58, G11B 724

Patent

active

058927514

ABSTRACT:
Pits and lands which have a pit length of 3T, a land length of *6T, a pit length of 7T, a land length of *3T, a pit length of 6T and a land length of *7T are alternately formed in a lead-in area in an inner track area on an optical disk as a test pattern for evaluating a read error of the optical disk. This test pattern data is reproduced by a reproducing system to detect an error rate, a compensation coefficient for minimizing the error rate is acquired, and a reproduction signal is compensated by using this compensation coefficient so that the reproduction signal is reproduced with the minimized error rate by the reproducing system.

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