Optical recording medium with grooves, optical recording...

Details Optical recording medium with grooves, optical recording... Optical recording medium with grooves, optical recording...

2005-12-13

2005-12-13

Nguyen, Hoa T. (Department: 2652)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

Reexamination Certificate

active

06975578

ABSTRACT:
The stable reproduction of wobble signal without generating beats despite of an improvement in recording density by narrowing a track pitch is realized. Data by magnetooptical recording is recorded on wobbling grooves and lands between adjacent wobbling grooves. The wobbling grooves are provided to wobble both sides of the grooves in different amplitudes. Further, both the sides wobbled in different amplitudes are wobbled in phase in the track direction. These different amplitudes of both sides are preferably set to 3.3 to 40%.

REFERENCES:
patent: 4416002 (1983-11-01), Oguino et al.
patent: 5757756 (1998-05-01), Hajjar
patent: 5844882 (1998-12-01), Yoshida et al.
patent: 6069870 (2000-05-01), Maeda et al.
patent: 6292458 (2001-09-01), Eguchi et al.
patent: 6538968 (2003-03-01), Yamaguchi et al.
patent: 6590844 (2003-07-01), Fujita et al.
patent: 6597655 (2003-07-01), Sato et al.
patent: 6611492 (2003-08-01), Akimori et al.
patent: 6621772 (2003-09-01), Asano et al.
patent: 6795390 (2004-09-01), Miyamoto et al.
patent: 838808 (1998-04-01), None
patent: 6-338066 (1994-12-01), None
patent: 2000-306242 (2000-11-01), None
U.S. Appl. No. 09/849,278, filed May 7, 2001, Endoh.
U.S. Appl. No. 10/250,684, filed Jul. 17, 2003, Endoh et al.

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