The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jun. 02, 2009

Filed:

Dec. 21, 2004
Applicants:

Yoichiro Sako, Tokyo, JP;

Mitsuhiro Shimada, Chiba, JP;

Koichi Sato, Tokyo, JP;

Tatsuya Inokuchi, Kanagawa, JP;

Atsuhiro Kumagai, Kanagawa, JP;

Inventors:

Yoichiro Sako, Tokyo, JP;

Mitsuhiro Shimada, Chiba, JP;

Koichi Sato, Tokyo, JP;

Tatsuya Inokuchi, Kanagawa, JP;

Atsuhiro Kumagai, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 29/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

Suitability of a recording medium for being recorded to and/or reproduced from by an apparatus is determined. Address information is read from a recording medium having at least a first area in which data is recordable, a second area, and a third area. The second area is followed by the first area which is followed by the third area. The address information includes first address information, which represents the position of the second area, and/or second address information which represents the position of the third area. A possible error in the address information is detected based on an error detection code generated for the address information. Whether the recording medium is suitable for being recorded to or reproduced from by the apparatus is determined based on a result of the detecting step. The recording medium is suitable when no error is detected and is unsuitable when an error is detected.


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