Optical disk device and optical disk

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval

Reexamination Certificate

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Details

C369S275400, C369S047100

Reexamination Certificate

active

11078950

ABSTRACT:
In an optical disk of HD-DVD, data is recorded in both grooves and lands. A groove track includes its own data region called a groove (G) track address system formed therein and a land track includes its own data region called a land (L) track address system formed therein. When tracing a groove track, address information X is read from the G track address system, and also address information Y is read from the L track address system. If neither relationship X=Y or X=Y+1 is satisfied, it is determined that the address information X includes an error. Further, a groove track includes its own data region called a groove (G) track address system having a parity bit formed therein and a land track includes its own data region called a land (L) track address system having a parity bit formed therein. When tracing a groove track, address information X is read from the G track address system, and also address information Y is read from the L track address system. Even when the parity is correct, if neither relationship X=Y or X=Y+1 is satisfied, it is determined that the address information X includes an error.

REFERENCES:
patent: 6233219 (2001-05-01), Hori et al.
patent: 6400653 (2002-06-01), Torazawa et al.
patent: 6621772 (2003-09-01), Asano et al.
patent: 6630219 (2003-10-01), Hirokane et al.
patent: 6690641 (2004-02-01), Miyamoto et al.
patent: 6791921 (2004-09-01), Maeda et al.
patent: 6914856 (2005-07-01), Kim et al.
patent: 2005/0018565 (2005-01-01), Kanaoka
patent: 2005/0169159 (2005-08-01), Tamura et al.
patent: 2003-30853 (2003-01-01), None
patent: WO 98/54703 (1998-03-01), None
“Next Generation DVD Specification HD DVD”, Nikkei Electronics / Nikkei BP, Oct. 13, 2003, pp. 126-134 (with partial English translation).

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