| 发明名称 |
OPTICAL DISC APPARATUS |
| 摘要 |
According to one embodiment, there is provided an optical disc apparatus of a slot loading type, including a photosensor disposed near a disc insertion port and configured to change an output therefrom when an optical disc is inserted, a memory configured to record an output signal from the photosensor, and a controller configured to estimate a transparent clamp area of the optical disc based on the output signal, estimate a position of a center hole part of the optical disk based on the estimated clamp area, and detect presence of a foreign matter in the center hole part when a light-blocking percentage in the center hole part indicated by the output signal is equal to or higher than a predetermined value. |
| 申请公布号 |
US2014282631(A1) |
申请公布日期 |
2014.09.18 |
| 申请号 |
US201314042865 |
申请日期 |
2013.10.01 |
| 申请人 |
Toshiba Alpine Automotive Technology Corporation |
发明人 |
YAMAMOTO Hiromichi;SHIMIZU Hiroki;KATAGIRI Shingo |
| 分类号 |
G11B17/028 |
主分类号 |
G11B17/028 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An optical disc apparatus of a slot loading type, comprising:
a photosensor disposed near a disc insertion port and configured to change an output therefrom when an optical disc is inserted; a memory configured to record an output signal from the photosensor; and a controller configured to estimate a transparent clamp area of the optical disc based on the output signal, estimate a position of a center hole part of the optical disk based on the estimated clamp area, and detect presence of a foreign matter in the center hole part when a light-blocking percentage in the center hole part indicated by the output signal is equal to or higher than a predetermined value. |
| 地址 |
Iwaki-shi JP |
