公开(公告)号：US20100177606A1

公开(公告)日：2010-07-15

申请号：US12683324

申请日：2010-01-06

申请人： Chia-Hsing HSU ,  Ming-Tsung Hsieh ,  Yi-Long Hsiao

发明人： Chia-Hsing HSU ,  Ming-Tsung Hsieh ,  Yi-Long Hsiao

IPC分类号： G11B7/00

CPC分类号： G11B19/127 ,  G11B2007/0006 ,  G11B2007/0013

摘要： A method for identifying a layer number of an optical disc is provided. Firstly, a SA value is adjusted to a standard SA value of each of two data layers in sequence. Next, focusing courses are performed so as to enable the focus point to pass through the optical disc. Then, maximum amplitudes of focusing error signals in the focusing courses are recorded. After that, whether the maximum amplitudes of the focusing error signals recorded in the focusing courses are equal is checked. If the maximum amplitudes are equal, the optical disc is identified as a double-layered disc. If the maximum amplitudes are not equal, the optical disc is identified as a single-layered disc.

摘要翻译： 提供了一种用于识别光盘的层数的方法。 首先，将SA值依次调整为两个数据层的标准SA值。 接下来，执行聚焦过程，以使焦点能够通过光盘。 然后，记录聚焦过程中聚焦误差信号的最大振幅。 之后，检查记录在聚焦路线中的聚焦误差信号的最大振幅是否相等。 如果最大幅度相等，则将光盘识别为双层盘。 如果最大幅度不相等，则将光盘识别为单层光盘。

公开(公告)号：US20100157767A1

公开(公告)日：2010-06-24

申请号：US12563508

申请日：2009-09-21

申请人： Chia-Hsing HSU ,  Pei-Kang Chen ,  Yi-Long Hsiao

发明人： Chia-Hsing HSU ,  Pei-Kang Chen ,  Yi-Long Hsiao

IPC分类号： G11B20/18

CPC分类号： G11B20/1816 ,  G11B7/1392 ,  G11B2220/2537

摘要： A method for identifying an abnormal disc includes the steps of: forming three testing spherical aberration (SA) values including an SA value of a thinner data layer, a standard SA value and an SA value of a thicker data layer; adjusting to one of the testing SA values; performing focus for a target disc and recording a focus error signal; obtaining a maximum focus error signal and a corresponding testing SA value by way of comparison; and checking whether the corresponding testing SA value is equal to the standard SA value, and identifying the target disc as a normal disc if yes, or otherwise identifying the target disc as the abnormal disc and re-adjusting the SA value to enhance the signal quality.

摘要翻译： 用于识别异常盘的方法包括以下步骤：形成包括较薄数据层的SA值，标准SA值和较厚数据层的SA值的三个测试球面像差（SA）值; 调整为一个测试SA值; 对目标盘执行对焦并记录聚焦误差信号; 通过比较获得最大聚焦误差信号和相应的测试SA值; 并检查对应的测试SA值是否等于标准SA值，并且如果是，则将目标盘识别为普通盘，否则将目标盘识别为异常盘并重新调整SA值以增强信号质量 。