Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Reexamination Certificate
2007-04-03
2007-04-03
Young, Wayne (Department: 2627)
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
C369S013390, C369S126000
Reexamination Certificate
active
10511623
ABSTRACT:
The present invention provides a method and an apparatus for discriminating the type of an optical recording medium and the number of recording layers in the medium. The apparatus includes a first electrode and a second electrode placed in the vicinity of a light transmission layer of the recording medium, an alternating current signal generation circuit for applying an alternating current A to the first electrode, a detection circuit for detecting the level of an alternating current B appearing at the second electrode, and a control circuit for controlling the operations of the alternating current signal generation circuit and the detection circuit, and a table provided in the control circuit.
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Translation of JP 10-143986.
Fukunaga Kazuo
Hirata Hideki
Hosobuchi Toshikazu
Namioka Takashi
Shibuya Giichi
Rivero Minerva
Seed IP Law Group PLLC
TDK Corporation
Young Wayne
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