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    Detector for low frequency offset distortion
    1.
    发明授权
    Detector for low frequency offset distortion 失效
    低频偏移失真检测器

    公开(公告)号：US08537883B1

    公开(公告)日：2013-09-17

    申请号：US13365712

    申请日：2012-02-03

    申请人： Jingfeng Liu ,  Hongwei Song ,  Jin Xie

    发明人： Jingfeng Liu ,  Hongwei Song ,  Jin Xie

    IPC分类号： H03H7/30

    CPC分类号： G11B20/10351 ,  G11B20/10046 ,  G11B20/10296 ,  G11B2220/2537 ,  H04L1/0054 ,  H04L25/03038 ,  H04L27/0014 ,  H04L2027/003 ,  H04L2027/0038

    摘要： A system for removing low frequency offset distortion from a digital signal, the system comprising an analog-to-digital converter to convert an analog frequency signal associated with an optical storage medium to a digital frequency signal; an equalizer to equalize the digital frequency signal; an estimator to estimate a low frequency offset distortion of the digital frequency signal; a compensator to substantially cancel the low frequency offset distortion of the digital frequency signal from the equalized digital frequency signal using the estimate; and a decoder to decode the equalized digital frequency signal having the low frequency offset distortion substantially cancelled therefrom.

    摘要翻译： 一种用于从数字信号中去除低频偏移失真的系统，该系统包括用于将与光学存储介质相关联的模拟频率信号转换为数字频率信号的模拟 - 数字转换器; 均衡器以均衡数字频率信号; 用于估计数字频率信号的低频偏移失真的估计器; 补偿器，用于使用所述估计从所述均衡数字频率信号基本上消除所述数字频率信号的低频偏移失真; 以及解码器，用于解码具有基本上从其中抵消的低频偏移失真的均衡数字频率信号。

    Detector for low frequency offset distortion
    2.
    发明授权
    Detector for low frequency offset distortion 有权
    低频偏移失真检测器

    公开(公告)号：US08111739B1

    公开(公告)日：2012-02-07

    申请号：US12025581

    申请日：2008-02-04

    申请人： Jingfeng Liu ,  Hongwei Song ,  Jin Xie

    发明人： Jingfeng Liu ,  Hongwei Song ,  Jin Xie

    IPC分类号： H03H7/30

    CPC分类号： G11B20/10351 ,  G11B2220/2537

    摘要： A system for removing low frequency offset distortion from a digital signal, the system comprising an analog-to-digital converter to convert an analog frequency signal associated with an optical storage medium to a digital frequency signal; an equalizer to equalize the digital frequency signal; an estimator to estimate a low frequency offset distortion of the digital frequency signal; a compensator to substantially cancel the low frequency offset distortion of the digital frequency signal from the equalized digital frequency signal using the estimate; and a decoder to decode the equalized digital frequency signal having the low frequency offset distortion substantially cancelled therefrom.

    摘要翻译： 一种用于从数字信号中去除低频偏移失真的系统，该系统包括用于将与光学存储介质相关联的模拟频率信号转换为数字频率信号的模拟 - 数字转换器; 均衡器以均衡数字频率信号; 用于估计数字频率信号的低频偏移失真的估计器; 补偿器，用于使用所述估计从所述均衡数字频率信号基本上消除所述数字频率信号的低频偏移失真; 以及解码器，用于解码具有基本上从其中抵消的低频偏移失真的均衡数字频率信号。

    Asymmetry compensation system
    3.
    发明授权
    Asymmetry compensation system 有权
    不对称补偿系统

    公开(公告)号：US08477581B1

    公开(公告)日：2013-07-02

    申请号：US12104879

    申请日：2008-04-17

    申请人： Jingfeng Liu ,  Jin Xie ,  Mats Oberg

    发明人： Jingfeng Liu ,  Jin Xie ,  Mats Oberg

    IPC分类号： G11B20/10

    CPC分类号： G11B20/10027 ,  G11B20/10037 ,  G11B20/10046 ,  G11B20/10296 ,  G11B20/10351 ,  G11B2220/2537

    摘要： A system with a nonlinear element processes a replay signal with a scaling factor into a signal compensated for asymmetry. The replay signal may include data from an optical disk. The scaling factor may be estimated based on the compensated signal and a scaling factor gain. The replay signal and the compensated signal may be converted into digital signals and processed digitally. In one embodiment, the compensated signal may be calculated as approximately the scaling factor multiplied by a square of an amplitude of the replay signal added to the amplitude of the replay signal. In another embodiment, the compensated signal may be calculated as approximately the scaling factor multiplied by an absolute value of an amplitude of the replay signal added to the amplitude of the replay signal. A related method is also disclosed. Other embodiments are provided, and each of the embodiments described herein can be used alone or in combination with one another.

    摘要翻译： 具有非线性元件的系统将缩放因子的重放信号处理成补偿不对称的信号。 重放信号可以包括来自光盘的数据。 可以基于补偿信号和缩放因子增益来估计缩放因子。 重播信号和补偿信号可以被转换成数字信号并以数字方式处理。 在一个实施例中，可以将补偿信号近似计算为乘以重放信号的振幅的重放信号的振幅的平方乘以比例因子。 在另一个实施例中，可以将补偿信号近似地计算为与重放信号的振幅相加的重放信号的振幅的绝对值乘以比例因子。 还公开了相关方法。 提供了其它实施例，并且本文所述的每个实施例可以单独使用或彼此组合使用。

    RF interpolated timing recovery using clock synchronized to wobble
    5.
    发明授权
    RF interpolated timing recovery using clock synchronized to wobble 有权
    使用与摆频同步的时钟进行RF插值定时恢复

    公开(公告)号：US08199626B1

    公开(公告)日：2012-06-12

    申请号：US13175312

    申请日：2011-07-01

    申请人： Jin Xie ,  Jingfeng Liu

    发明人： Jin Xie ,  Jingfeng Liu

    IPC分类号： G11B7/00

    CPC分类号： G11B7/0053 ,  G11B2007/0006

    摘要： Devices, systems, methods, and other embodiments associated with clocking a radio frequency channel are described. In one embodiment, an apparatus includes a wobble channel logic configured to at least partially decode a digital wobble signal and configured to control a time base generator to generate a clock signal that is synchronized to wobble data. The apparatus further includes downsampling logic to scale the clock signal to produce a scaled clock signal, and a radio frequency channel logic to at least partially decode a digital radio frequency signal. The clocking signal is connected to clock the radio frequency channel logic, and the scaled clocking signal is connected to clock the wobble channel logic.

    摘要翻译： 描述了与计时射频信道相关联的设备，系统，方法和其他实施例。 在一个实施例中，装置包括摆动通道逻辑，其被配置为至少部分地解码数字摆动信号，并配置成控制时基发生器以产生与摆动数据同步的时钟信号。 该装置还包括下采样逻辑以缩放时钟信号以产生缩放的时钟信号，以及射频信道逻辑以至少部分地解码数字射频信号。 时钟信号被连接以对射频信道逻辑进行时钟，并且缩放的时钟信号被连接以对摆频信道逻辑进行时钟。

    Wobble channel clocking
    6.
    发明授权
    Wobble channel clocking 有权
    摆频通道时钟

    公开(公告)号：US07974169B1

    公开(公告)日：2011-07-05

    申请号：US12418010

    申请日：2009-04-03

    申请人： Jin Xie ,  Jingfeng Liu

    发明人： Jin Xie ,  Jingfeng Liu

    IPC分类号： G11B7/00

    CPC分类号： G11B7/0053 ,  G11B2007/0006

    摘要： Devices, systems, methods, and other embodiments associated with wobble channel clocking are described. In one embodiment, an apparatus implemented with a clock generator, a clock scaling logic, radio frequency channel logic, and wobble channel log. The clock generator generates a clocking signal. The clock scaling logic scales the clocking signal to produce a scaled clocking signal. The radio frequency channel logic at least partially decodes a digital radio frequency signal from an optical disk. The wobble channel logic at least partially decodes a digital wobble signal from the optical disk. Either the clocking signal or the scaled clocking signal is used to clock the radio frequency channel logic, and the other clocking signal or the scaled clocking signal is used to clock the wobble channel.

    摘要翻译： 描述了与摆频信道时钟相关联的设备，系统，方法和其它实施例。 在一个实施例中，使用时钟发生器，时钟缩放逻辑，射频通道逻辑和摆动通道日志来实现的装置。 时钟发生器产生时钟信号。 时钟缩放逻辑缩放时钟信号以产生缩放的时钟信号。 射频信道逻辑至少部分地解码来自光盘的数字射频信号。 摆动通道逻辑至少部分地解码来自光盘的数字摆动信号。 时钟信号或缩放的时钟信号被用于对射频信道逻辑进行时钟，另一个时钟信号或缩放的时钟信号用于对摆频信道进行时钟。

    RF interpolated time recovery using clock synchronized to wobble
    7.
    发明授权
    RF interpolated time recovery using clock synchronized to wobble 有权
    RF内插时间恢复使用时钟同步摆动

    公开(公告)号：US08477582B1

    公开(公告)日：2013-07-02

    申请号：US13492975

    申请日：2012-06-11

    申请人： Jin Xie ,  Jingfeng Liu

    发明人： Jin Xie ,  Jingfeng Liu

    IPC分类号： G11B20/14 ,  G11B7/00

    CPC分类号： G11B7/0053 ,  G11B2007/0006

    摘要： Devices, systems, methods, and other embodiments associated with clocking a radio frequency channel are described. In one embodiment, an apparatus includes a wobble channel logic configured to at least partially decode a digital wobble signal and configured to control a time base generator to generate a clock signal that is synchronized to wobble data. The apparatus further includes scaling logic to scale the clock signal to produce a scaled clock signal, and radio frequency channel logic configured to at least partially decode a digital radio frequency signal. The radio frequency channel logic is configured to be clocked by the clock signal and the wobble channel logic is configured to be clocked by the scaled clock signal.

    摘要翻译： 描述了与计时射频信道相关联的设备，系统，方法和其他实施例。 在一个实施例中，装置包括摆动通道逻辑，其被配置为至少部分地解码数字摆动信号，并配置成控制时基发生器以产生与摆动数据同步的时钟信号。 该装置还包括缩放逻辑以缩放时钟信号以产生缩放的时钟信号，以及被配置为至少部分地解码数字射频信号的射频信道逻辑。 射频通道逻辑被配置为由时钟信号计时，并且摆动通道逻辑被配置为由缩放的时钟信号来计时。

    Method and apparatus for detecting sync mark
    9.
    发明授权
    Method and apparatus for detecting sync mark 有权
    用于检测同步标记的方法和装置

    公开(公告)号：US08576969B1

    公开(公告)日：2013-11-05

    申请号：US13151964

    申请日：2011-06-02

    申请人： Jin Xie ,  Mats Oberg

    发明人： Jin Xie ,  Mats Oberg

    IPC分类号： H04L7/00

    CPC分类号： G11B20/10277 ,  G11B2220/2541 ,  H04L7/042

    摘要： Aspects of the disclosure provide a method for detecting marks. The method includes receiving a data signal from a channel. Further, the method includes matching the data signal to a template that corresponds to a predetermined pattern transmitted over the channel to detect marks, prior to decoding the data signal into a decoded bit stream.

    摘要翻译： 本公开的方面提供了用于检测标记的方法。 该方法包括从信道接收数据信号。 此外，在将数据信号解码为解码的比特流之前，该方法包括将数据信号与对应于通过信道发送的预定模式的模板进行匹配以检测标记。

    METHOD AND APPARATUS FOR OFFSET AND GAIN CORRECTION
    10.
    发明申请
    METHOD AND APPARATUS FOR OFFSET AND GAIN CORRECTION 有权
    用于偏移和增益校正的方法和装置

    公开(公告)号：US20110273974A1

    公开(公告)日：2011-11-10

    申请号：US13101439

    申请日：2011-05-05

    申请人： Jin Xie ,  Bin Ni ,  Mats Oberg

    发明人： Jin Xie ,  Bin Ni ,  Mats Oberg

    IPC分类号： G11B20/10

    CPC分类号： G11B20/10222 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/10203 ,  G11B20/10314 ,  G11B20/10351 ,  G11B20/10509 ,  G11B20/18 ,  G11B2020/1062 ,  G11B2220/2537

    摘要： Aspects of the disclosure provide a signal processing circuit that has fast response time to sudden profile changes in an electrical signal. The signal processing circuit includes a processing path configured to process an electrical signal that is generated in response to reading data on a storage medium, and a feed-forward correction module. The feed-forward correction module is configured to detect a profile variation based the electrical signal in a time window, and correct the electrical signal in the time window based on the detected profile variation.

    摘要翻译： 本公开的方面提供了一种信号处理电路，其对电信号中的突然轮廓变化具有快速响应时间。 信号处理电路包括处理路径，其被配置为处理响应于在存储介质上读取数据而产生的电信号和前馈校正模块。 前馈校正模块被配置为基于时间窗中的电信号检测轮廓变化，并且基于检测到的轮廓变化来校正时间窗中的电信号。