公开(公告)号：US08144560B2

公开(公告)日：2012-03-27

申请号：US11910619

申请日：2006-03-22

申请人： Chee Kang Thong ,  Rain Zhang

发明人： Chee Kang Thong ,  Rain Zhang

IPC分类号： G11B17/04

CPC分类号： G11B19/10 ,  G11B20/00086

摘要： The invention relates to a method for preventing interchange of a first optical information carrier (1) with a second optical information carrier in an optical drive. Initially, the light (5) is focused at the first optical information carrier (1) in the optical apparatus followed by the steps of detecting reflected light (8) from the first optical information carrier (1) and generating a plurality of signals (CA, RF, FE) from the detected light (8), such as a focus error signal (FE). Upon obtaining an indication of a signal, e.g. the focus error signal (FE), is absent or reduced below a certain level, there is a step of assessing if the first optical information carrier (1) has been removed from the optical drive. If removed, reproduction of information by the optical drive is made impossible until some pre-determined measures have been taken, e.g. restart of the optical drive or other measures.

摘要翻译： 本发明涉及一种用于防止第一光信息载体（1）与光驱中的第二光信息载体交换的方法。 最初，光（5）聚焦在光学装置中的第一光学信息载体（1）处，随后是检测来自第一光学信息载体（1）的反射光（8）并产生多个信号（CA ，RF，FE），例如聚焦误差信号（FE）。 一旦获得信号的指示，例如， 聚焦误差信号（FE）不存在或降低到低于某一水平，则存在评估第一光信息载体（1）是否已经从光驱中移除的步骤。 如果移除，则不可能通过光盘驱动器再现信息，直到采取了一些预先确定的措施，例如， 重启光驱等措施。

公开(公告)号：US07864644B2

公开(公告)日：2011-01-04

申请号：US11915411

申请日：2006-05-16

申请人： Chee Kang Thong ,  Rain Zhang ,  Bin Chye Lim

发明人： Chee Kang Thong ,  Rain Zhang ,  Bin Chye Lim

IPC分类号： G11B11/00

CPC分类号： G11B19/00 ,  G11B19/28

摘要： A method and device are disclosed for improving reliability of reading an optical storage medium, such as an optical disc (20). A disc spin speed value (31) of the optical disc (20) is provided and an unnormal value of said disc spin speed value (31), which differs from a disc spin speed value within a range of nominal disc spin speed values, is detected, indicating normal spinning operation of said optical disc (20). By using this method, the spinning loss of an optical disc, e.g. due to insufficient disc clamping force, is detected fastly and reliably, in a manner resulting in a reduced risk of damaging the disc and disc reader during such spinning loss. Further actions may be taken in both cases, including disabling the drive in order to prevent damage of the disc or to thwart such illegal usage.

摘要翻译： 公开了一种用于提高读取诸如光盘（20）的光学存储介质的可靠性的方法和装置。 提供光盘（20）的盘旋转速度值（31），并且在标称盘旋转速度值的范围内与盘旋转速度值不同的所述盘旋转速度值（31）的非正常值为 检测到的，指示所述光盘（20）的正常旋转操作。 通过使用该方法，光盘的纺丝损失，例如， 由于盘夹紧力不足，可以快速，可靠地检测，从而在这种纺丝损失期间导致损坏盘和盘读取器的风险降低。 在这两种情况下都可采取进一步措施，包括禁用驱动器，以防止损坏光盘或阻止这种非法使用。

公开(公告)号：US20080186821A1

公开(公告)日：2008-08-07

申请号：US11915411

申请日：2006-05-16

申请人： Chee Kang Thong ,  Rain Zhang ,  Bin Chye Lim

发明人： Chee Kang Thong ,  Rain Zhang ,  Bin Chye Lim

IPC分类号： G11B5/58

CPC分类号： G11B19/00 ,  G11B19/28

摘要： A method and device are disclosed for improving reliability of reading an optical storage medium, such as an optical disc (20). A disc spin speed value (31) of the optical disc (20) is provided and an unnormal value of said disc spin speed value (31), which differs from a disc spin speed value within a range of nominal disc spin speed values, is detected, indicating normal spinning operation of said optical disc (20). By using this method, the spinning loss of an optical disc, e.g. due to insufficient disc clamping force, is detected fastly and reliably, in a manner resulting in a reduced risk of damaging the disc and disc reader during such spinning loss. Further actions may be taken in both cases, including disabling the drive in order to prevent damage of the disc or to thwart such illegal usage.

摘要翻译： 公开了一种用于提高读取诸如光盘（20）的光学存储介质的可靠性的方法和装置。 提供光盘（20）的盘旋转速度值（31），并且在标称盘旋转速度值的范围内与盘旋转速度值不同的所述盘旋转速度值（31）的非正常值为 检测到的，指示所述光盘（20）的正常旋转操作。 通过使用该方法，光盘的纺丝损失，例如， 由于盘夹紧力不足，可以快速，可靠地检测，从而在这种纺丝损失期间导致损坏盘和盘读取器的风险降低。 在这两种情况下都可采取进一步措施，包括禁用驱动器，以防止损坏光盘或阻止这种非法使用。

公开(公告)号：US20080209456A1

公开(公告)日：2008-08-28

申请号：US11910619

申请日：2006-03-22

申请人： Chee Kang Thong ,  Rain Zhang

发明人： Chee Kang Thong ,  Rain Zhang

IPC分类号： G11B17/04

CPC分类号： G11B19/10 ,  G11B20/00086

摘要： The invention relates to a method for preventing interchange of a first optical information carrier (1) with a second optical information carrier in an optical drive. Initially, the light (5) is focused at the first optical information carrier (1) in the optical apparatus followed by the steps of detecting reflected light (8) from the first optical information carrier (1) and generating a plurality of signals (CA, RF, FE) from the detected light (8), such as a focus error signal (FE). Upon obtaining an indication of a signal, e.g. the focus error signal (FE), is absent or reduced below a certain level, there is a step of assessing if the first optical information carrier (1) has been removed from the optical drive. If removed, reproduction of information by the optical drive is made impossible until some pre-determined measures have been taken, e.g. restart of the optical drive or other measures.

摘要翻译： 本发明涉及一种用于防止第一光信息载体（1）与光驱中的第二光信息载体交换的方法。 最初，光（5）聚焦在光学装置中的第一光学信息载体（1）处，随后检测来自第一光学信息载体（1）的反射光（8）并产生多个信号（CA ，RF，FE），例如聚焦误差信号（FE）。 一旦获得信号的指示，例如， 聚焦误差信号（FE）不存在或降低到低于某一水平，则存在评估第一光信息载体（1）是否已经从光驱中移除的步骤。 如果移除，则不可能通过光盘驱动器再现信息，直到采取了一些预先确定的措施，例如， 重启光驱等措施。