Sensing media speed
    11.
    发明申请
    Sensing media speed 审中-公开
    感应媒体速度

    公开(公告)号:US20050058042A1

    公开(公告)日:2005-03-17

    申请号:US10661189

    申请日:2003-09-12

    IPC分类号: G11B19/28 G11B7/00

    CPC分类号: G11B19/28

    摘要: A method of using electromagnetic radiation to control exposure of media to electromagnetic radiation is presented. The method includes rotating the media and sensing a frequency of electromagnetic radiation radiating from a rim of the media with a stationary detector. Exposure of the media to electromagnetic radiation with a movable source is controlled with the sensed frequency to provide increased accuracy.

    摘要翻译: 提出了一种使用电磁辐射来控制介质暴露于电磁辐射的方法。 该方法包括旋转介质并感测使用固定检测器从介质的边缘辐射的电磁辐射的频率。 利用感测的频率来控制介质对可移动源的电磁辐射的曝光,以提高精度。

    Focus offset calibration
    12.
    发明申请
    Focus offset calibration 失效
    对焦偏移校准

    公开(公告)号:US20070030332A1

    公开(公告)日:2007-02-08

    申请号:US11195094

    申请日:2005-08-02

    IPC分类号: B41J2/435

    摘要: A series of signals is applied to a lens actuator of a disc media marking device to respectively position a lens at a series of distances from an optical disc. A mark is formed on the optical disc at each of the distances of the lens from the optical disc by passing a light beam through the lens and onto the optical disc. The darkest of the marks is determined. The signal applied to the actuator corresponding to the darkest mark is determined.

    摘要翻译: 一系列信号被施加到盘介质标记装置的透镜致动器,以分别将透镜与光盘定位成一系列距离。 通过使光束通过透镜并且到达光盘,在光盘上从透​​镜与光盘的每个距离处形成标记。 最黑暗的标记是确定的。 确定施加到对应于最暗标记的致动器的信号。

    Controlling actuator movement
    14.
    发明申请
    Controlling actuator movement 审中-公开
    控制执行器运动

    公开(公告)号:US20050246728A1

    公开(公告)日:2005-11-03

    申请号:US10836727

    申请日:2004-04-30

    IPC分类号: G11B7/00 G11B7/0037

    CPC分类号: G11B7/0037

    摘要: A method for interacting with a disc includes sensing movement of a disc interaction device on a data side of the disc to obtain a sensed value and controlling movement of the disc interaction device on a label side of the disc based upon the sensed value.

    摘要翻译: 用于与盘相互作用的方法包括感测盘的数据侧的盘交互装置的移动,以便基于感测的值获得感测值并且控制盘交互装置在盘的标签侧上的移动。

    Content encryption using programmable hardware
    15.
    发明申请
    Content encryption using programmable hardware 有权
    内容加密使用可编程硬件

    公开(公告)号:US20050021961A1

    公开(公告)日:2005-01-27

    申请号:US10460481

    申请日:2003-06-11

    IPC分类号: H04L9/08 G06F21/00 H04L9/00

    CPC分类号: G06F21/602 G06F21/10

    摘要: Methods and apparatus are disclosed for a content encryption scheme using programmable hardware. In one embodiment, a content request is transmitted to a content provider. In response to the content request, a session key is received and programmable hardware is configured using the session key to produce a first configuration. An identification key is generated and the first configuration of the programmable hardware is used to encrypt the identification key. The encrypted identification key is transmitted to the content provider. Encrypted content containing the identification key is then received.

    摘要翻译: 公开了使用可编程硬件的内容加密方案的方法和装置。 在一个实施例中,将内容请求发送到内容提供商。 响应于内容请求,接收会话密钥,并且使用会话密钥来配置可编程硬件以产生第一配置。 生成识别密钥,并且使用可编程硬件的第一配置来加密识别密钥。 加密的识别密钥被发送到内容提供商。 然后接收包含识别密钥的加密内容。

    Array-based optical head
    16.
    发明申请
    Array-based optical head 审中-公开
    基于阵列的光学头

    公开(公告)号:US20060072425A1

    公开(公告)日:2006-04-06

    申请号:US10955704

    申请日:2004-09-30

    申请人: Darwin Hanks

    发明人: Darwin Hanks

    IPC分类号: G11B7/00

    摘要: An array-based optical head is configured for read and/or write operations to optical media. In one implementation, a polarizing beam splitter is configured to direct laser light to optical media. A photo-detector array is configured to receive light modulated by reflection off a checkered pattern on the optical media and to create an output signal corresponding to the modulated light.

    摘要翻译: 基于阵列的光学头被配置用于对光学介质的读取和/或写入操作。 在一个实施方案中,偏振分束器被配置为将激光引导到光学介质。 光检测器阵列被配置为接收由光学介质上的方格图案的反射调制的光并且产生对应于调制光的输出信号。

    Optical data processing
    17.
    发明申请
    Optical data processing 失效
    光数据处理

    公开(公告)号:US20060072401A1

    公开(公告)日:2006-04-06

    申请号:US10955703

    申请日:2004-09-30

    申请人: Darwin Hanks

    发明人: Darwin Hanks

    IPC分类号: G11B19/02

    摘要: An optical system configured for optical data processing is disclosed. In one example of the system, a photodetector array is configured to obtain an image of light modulated by reflection off a data track defined on optical media. In this example, the image contains at least one framing mark and at least one data region. A post-processor is configured to analyze the image and to recognize the framing mark and data within the data region.

    摘要翻译: 公开了一种配置用于光学数据处理的光学系统。 在系统的一个示例中,光电检测器阵列被配置为获得由光学介质上限定的数据轨道的反射调制的光的图像。 在该示例中,图像包含至少一个成帧标记和至少一个数据区域。 后处理器被配置为分析图像并识别数据区域内的成帧标记和数据。

    Self-sensing active-damping voice coil

    公开(公告)号:US20060039267A1

    公开(公告)日:2006-02-23

    申请号:US10923524

    申请日:2004-08-20

    申请人: Darwin Hanks

    发明人: Darwin Hanks

    IPC分类号: G11B7/00

    摘要: A control circuit creates a self-sensing active-damping voice coil. The control circuit includes a current sensor coupled to a voice coil. A first filter is coupled to the current sensor to create an error voltage that is proportional to the integral of an external acceleration applied to the voice coil. A second filter with a lead-lag component is coupled to the error voltage to create a voltage applied to the voice coil that substantially cancels the external acceleration below a pole defined by a lead-lag component thereby damping the external accelerations.

    Optical disk drive focusing apparatus
    19.
    发明申请
    Optical disk drive focusing apparatus 审中-公开
    光盘驱动聚焦装置

    公开(公告)号:US20050058031A1

    公开(公告)日:2005-03-17

    申请号:US10661752

    申请日:2003-09-12

    申请人: Darwin Hanks

    发明人: Darwin Hanks

    IPC分类号: G11B7/09 G11B7/0037 G11B7/095

    CPC分类号: G11B7/0037 G11B7/0908

    摘要: A system, for providing an actuator control signal to an actuator within an optical pickup unit of an optical disk drive, focuses optics on an optical disk. In one implementation, an error term is obtained by sampling the FES (focus error signal) signal. The error term is scaled by an adaptation coefficient, which regulates a rate at which the error term modifies the actuator control signal. An actuator control signal generator generates the actuator control signal to control movement of the actuator, wherein the actuator control signal is a function of a prior actuator position, the error signal and the adaptation coefficient.

    摘要翻译: 用于向光盘驱动器的光学拾取单元内的致动器提供致动器控制信号的系统将光学器件聚焦在光盘上。 在一个实现中,通过对FES(聚焦误差信号)信号进行采样来获得误差项。 误差项由适应系数来缩放,该自适应系数调节误差项修改致动器控制信号的速率。 致动器控制信号发生器产生致动器控制信号以控制致动器的运动,其中致动器控制信号是先前的致动器位置,误差信号和适应系数的函数。

    Method and apparatus for playing content
    20.
    发明申请
    Method and apparatus for playing content 有权
    播放内容的方法和装置

    公开(公告)号:US20050005104A1

    公开(公告)日:2005-01-06

    申请号:US10460559

    申请日:2003-06-11

    申请人: Darwin Hanks

    发明人: Darwin Hanks

    摘要: Methods and apparatus are disclosed for playing content. In one embodiment, an identification key is generated. The identification key is encrypted and transmitted to a playback drive. Encrypted content containing a content identification key is received. If the content identification key matches the identification key that was generated, the content is decrypted and played.

    摘要翻译: 公开了播放内容的方法和装置。 在一个实施例中,生成识别密钥。 识别密钥被加密并传送到播放驱动器。 收到包含内容识别密钥的加密内容。 如果内容识别密钥与生成的识别密钥匹配,则内容被解密并播放。