Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Mechanism control by the control signal
Reexamination Certificate
2005-09-06
2005-09-06
Miller, Brian E. (Department: 2652)
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Mechanism control by the control signal
C369S047520, C369S044240
Reexamination Certificate
active
06940794
ABSTRACT:
An information recording/reproducing apparatus of the present invention includes: a light source for emitting a first light beam having a predetermined light power Ppre; a determination section for determining the number of recording layers included in the information recording medium; a light beam transmission adjustment section for adjusting the quantity of the first light beam transmitted therethrough; and a light condensing section for condensing the first light beam on the information recording medium. When the information recording medium has one recording layer, the adjustment section adjusts the predetermined light power Ppreso as to be a first light power P1. When the information recording medium has two recording layers, the adjustment section adjusts the predetermined light power Ppreso as to be a second light power P2. The predetermined light power Ppre, the first light power P1, and the second light power P2satisfy the relationship of P1<P2≦Ppre.
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Battaglia Michael V.
Matsushita Electric - Industrial Co., Ltd.
Miller Brian E.
Renner , Otto, Boisselle & Sklar, LLP
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