Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Mechanism control by the control signal
Reexamination Certificate
2011-03-08
2011-03-08
Huber, Paul (Department: 2627)
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Mechanism control by the control signal
C369S053270
Reexamination Certificate
active
07903511
ABSTRACT:
[PROBLEMS] To provide an optical information reproducing device capable of performing excellent super resolution reproduction at all times without complicating the hardware structure. [MEANS FOR SOLVING PROBLEMS] An optical information reproducing device (10) irradiates a laser beam to an optical information recording medium (16) in which effective spot size of the irradiated laser beam changes in accordance with intensity of the laser beam and reproduces information. The optical information reproducing device (10) includes: an asymmetry detection unit (13) as asymmetry detection device for obtaining asymmetry from a reproduction signal obtained by reproducing the information; and a laser power adjusting unit (14) as laser power adjusting device for controlling the laser beam intensity according to the asymmetry obtained by the asymmetry detection unit (13).
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Aoki Kazuhiko
Shibatoko Takeharu
Huber Paul
NEC Corporation
Sughrue & Mion, PLLC
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