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.
Patent No.:
Date of Patent:
Sep. 08, 2009
Filed:
Jan. 13, 2006
Tohru Kanegae, Saitama, JP;
Masatsugu Ogawa, Tokyo, JP;
Masahiro Kato, Saitama, JP;
Eisaku Kawano, Saitama, JP;
Masahiro Miura, Saitama, JP;
Tohru Kanegae, Saitama, JP;
Masatsugu Ogawa, Tokyo, JP;
Masahiro Kato, Saitama, JP;
Eisaku Kawano, Saitama, JP;
Masahiro Miura, Saitama, JP;
Pioneer Corporation, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A position verifying apparatus is provided with: a first recording device for recording the information into a first area of the first recording layer; a second recording device for recording a part of the information by laser light which has penetrated the first area and for recording another part of the information by laser light which does not penetrate the first area, into a second area of the second recording layer including at least a partial area which faces the first area; a reproducing device for reproducing the information; and a judging device for judging whether or not the relative shift is within tolerance, on the basis of a transit position at which reproduction quality transits from the reproduction quality indicated by the part of the information reproduced to the reproduction quality indicated by the another part of the information reproduced.