Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Mechanism control by the control signal
Reexamination Certificate
2007-10-16
2007-10-16
Korzuch, William (Department: 2627)
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Mechanism control by the control signal
C369S053200, C369S047110, C369S053290
Reexamination Certificate
active
10309189
ABSTRACT:
A method and device for determining the presence or absence of a disk and/or a disk size without using FG signals, are provided. The method includes placing a pickup at a first zone on the optical recording medium, the first zone located between an outer radius of a first recording medium type and an outer radius of a second recording medium type, where the outer radius of the second recording medium type is larger than the outer radius of the first recording medium type; detecting a reflected signal based on a returned beam from the first zone of the optical recording medium; and determining at least one of a size and an absence of the optical recording medium based on the detected reflected signal. Therefore, an FG sensor that is provided in a general disk device can be eliminated, thereby reducing the size and cost of a disk device.
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Jeong Myeong Su
Kim Beom Jim
Kim Dong Sik
Shin Tae Ki
Agustin Peter Vincent
Birch & Stewart Kolasch & Birch, LLP
Korzuch William
LG Electronics Inc.
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