Optical disk device capable of demodulation and verification...

Details Optical disk device capable of demodulation and verification... Optical disk device capable of demodulation and verification...

2007-12-04

2007-12-04

Young, Wayne (Department: 2627)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Control of information signal processing channel

C369S275300, C369S275400

Reexamination Certificate

active

10877365

ABSTRACT:
A high-definition optical disk device for recording and reproducing data with respect to lands and grooves of an optical disk. The grooves and the lands of the optical disk are wobbled, and address information is embedded in gray code. In the grooves and the lands, both groove track address systems and land track address systems are embedded and form redundant systems. When detecting the address of a land, in addition to demodulation of the address data from the land track address system, the address data is also extracted from the groove track address system. The address data thus extracted is used for verification to detect an error in the demodulated address data.

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Notice of Allowance for U.S. Appl. No. 10/877,537, mailed Mar. 7, 2007.
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Notice of Grounds for Rejection in corresponding Japanese Patent Application Serial No. 2003-336506 mailed on Jan. 4, 2005.
European Patent Office Partial Search Report, dated Jul. 26, 2007, for application EP 04 25 3722, which corresponds to U.S. Patent No. 7,245,579 B2.

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