Apparatus for discriminating optical recording medium and...

Details Apparatus for discriminating optical recording medium and... Apparatus for discriminating optical recording medium and...

2007-09-04

2007-09-04

Young, Wayne (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C720S606000, C720S601000

Reexamination Certificate

active

10512522

ABSTRACT:
It is an object of the present invention is 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 formed with periodical undulation in the circumferential direction thereof. The apparatus for discriminating an optical recording medium according to the present invention includes a first electrode11, a second electrode12, an alternate current signal generation circuit13for applying an alternate current A to the first electrode11, a detection circuit14for detecting a level of an alternate current B appearing at the second electrode12, and a control circuit15for controlling the operations of the alternate current signal generation circuit13and the detection circuit14.

REFERENCES:
patent: 5844873 (1998-12-01), Aoyama et al.
patent: 5898649 (1999-04-01), Park
patent: 6977883 (2005-12-01), Terao et al.
patent: 2004/0114913 (2004-06-01), Kume
patent: 10055601 (1998-02-01), None
patent: 10-143986 (1998-05-01), None
patent: 10143986 (1998-05-01), None

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