Recording medium master production method and recording medium

Details Recording medium master production method and recording medium Recording medium master production method and recording medium

1998-02-06

2000-09-12

Neyzari, Ali

Dynamic information storage or retrieval

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Optical track structure

3692751, 369278, 430321, G11B 724

Patent

active

061187569

ABSTRACT:
A recording medium of one-side address method capable of easily detecting a synchronous signal and production method of recording medium master used for such a recording medium. The recording medium master production method includes a photo-sensitive layer exposure step using a first beam and a second beam for exposure of walls of a groove in a straight line, wherein for exposure of an area where a synchronous signal is to be recorded, the second beam alone is used while being wobbled according to the synchronous signal. Moreover, the recording medium according to the present invention has at least a groove formed on a recording plane including: an area having no synchronous signal recorded where one of the walls of the groove is formed straight and the other wall of the groove is at least partially meandered according to an address signal; and an area having a synchronous signal recorded where both of the walls of the groove are meandered according to the synchronous signal.

REFERENCES:
patent: 5537373 (1996-07-01), Fuji

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