Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Reexamination Certificate
2007-01-02
2007-01-02
Tran, Thang V. (Department: 2656)
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
Reexamination Certificate
active
10512493
ABSTRACT:
It is an object of the present invention to provide an apparatus 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 and formed with periodical undulation in the circumferential direction thereof.The apparatus10for discriminating an optical recording medium according to the present invention includes a first electrode11,a second electrode12,a third electrode13,a fourth electrode14,an alternating current signal generation circuit17for applying an alternating current signal A to the first electrode11and the third electrode13,a detection circuit18for detecting the level of an alternating current signal B1appearing at the second electrode12and the level of an alternating current signal B2appearing at the fourth electrode14,a supporting mechanism15for supporting the first electrode11and the second electrode12,a supporting mechanism16for supporting the third electrode13and the fourth electrode14,a driving mechanism33for vertically moving the supporting mechanism15,a driving mechanism34for vertically moving the supporting mechanism16,and a control circuit19for controlling the operations of the alternating current signal generation circuit17,the detection circuit18,the driving mechanism33and the driving mechanism34,and a table19ais provided in the control circuit19.
REFERENCES:
patent: 4392255 (1983-07-01), Del Giudice
patent: 5287342 (1994-02-01), Kishi et al.
patent: 5389475 (1995-02-01), Yanagisawa et al.
patent: 2004/0114913 (2004-06-01), Kume
patent: 2005/0007924 (2005-01-01), Nishiuchi et al.
patent: 52-150602 (1977-12-01), None
patent: 10-055601 (1998-02-01), None
patent: 10055601 (1998-02-01), None
patent: 10-143986 (1998-05-01), None
Fukunaga Kazuo
Hirata Hideki
Hosobuchi Toshikazu
Namioka Takashi
Shibuya Giichi
Pham Van T.
Seed IP Law Group PLLC
TDK Corporation
Tran Thang V.
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