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:
Aug. 01, 2006
Filed:
Apr. 23, 2003
Kazuo Fukunaga, Tokyo, JP;
Toshikazu Hosobuchi, Tokyo, JP;
Takashi Namioka, Tokyo, JP;
Yasufumi Takasugi, Tokyo, JP;
Giichi Shibuya, Tokyo, JP;
Hideki Hirata, Tokyo, JP;
Kazuki Suzawa, Tokyo, JP;
Tsutomu Kotani, Tokyo, JP;
Kazuo Fukunaga, Tokyo, JP;
Toshikazu Hosobuchi, Tokyo, JP;
Takashi Namioka, Tokyo, JP;
Yasufumi Takasugi, Tokyo, JP;
Giichi Shibuya, Tokyo, JP;
Hideki Hirata, Tokyo, JP;
Kazuki Suzawa, Tokyo, JP;
Tsutomu Kotani, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
It is an object of the present invention to provide an apparatus for discriminating an optical recording medium and a method for discriminating an optical recording medium which can reliably discriminate the kind of an optical recording medium even in the case where the optical recording medium to be discriminated is warped. The apparatus for discriminating an optical recording medium according to the present invention includes a first electrode, a second electrode, an alternating current signal generation circuitfor applying an alternating current signal A to the first electrode, a detection circuitfor detecting the level of an alternating current signal B appearing at the second electrode, a supporting mechanismfor supporting the first electrodeand the second electrode, a driving mechanismfor vertically moving the supporting mechanism, and a control circuitfor controlling the operations of the alternating current signal generation circuitand the detection circuitand the driving mechanism