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    HIGH PASS FILTERING DEVICE FOR AN OPTICAL DISC DRIVE
    1.
    发明申请
    HIGH PASS FILTERING DEVICE FOR AN OPTICAL DISC DRIVE 审中-公开
    用于光盘驱动器的高通滤波器件

    公开(公告)号：US20070291622A1

    公开(公告)日：2007-12-20

    申请号：US11758094

    申请日：2007-06-05

    申请人： Kuo-Jung Lan ,  Chih-Ching Chen ,  Chia-Wei Liao ,  Yuh Cheng ,  Ming-Jiou Yu ,  Yu-Hsuan Lin ,  Shu-Hung Chou

    发明人： Kuo-Jung Lan ,  Chih-Ching Chen ,  Chia-Wei Liao ,  Yuh Cheng ,  Ming-Jiou Yu ,  Yu-Hsuan Lin ,  Shu-Hung Chou

    IPC分类号： G11B7/00

    CPC分类号： G11B7/0943 ,  G11B7/0903 ,  G11B7/0909 ,  G11B7/1263

    摘要： A high pass filtering device for an optical disc drive comprises a first low pass filter (LPF) of a first sampling rate, filtering a digital input signal; a down-sampler receiving a first filtered signal form the first LPF to down-sample the first filtered signal by an integer factor N; a second LPF of a second sampling rate, filtering a first down-sampled signal from the down-sampler, wherein the second LPF has a corner frequency corresponding to a desired frequency of the high pass filtering device, and the second sampling rate is equal to 1/N times the first sampling rate; an up-sampler receiving a second filtered signal from the second LPF to up-sample the second filtered signal by the factor N; and a subtractor subtracting an up-sampled signal output by the up-sampler from the digital input signal when the filter frequency is below a threshold frequency.

    摘要翻译： 用于光盘驱动器的高通滤波装置包括第一采样率的第一低通滤波器（LPF），对数字输入信号进行滤波; 下采样器从第一LPF接收第一滤波信号，以对第一滤波信号进行下采样整数因子N; 第二采样率的第二LPF，滤波来自下采样器的第一下采样信号，其中第二LPF具有对应于高通滤波器件的期望频率的转角频率，第二采样率等于 1 / N次第一次采样率; 上采样器接收来自第二LPF的第二滤波信号，以将第二滤波信号向上采样因子N; 以及当滤波器频率低于阈值频率时，减法器从数字输入信号中减去上采样器输出的上采样信号。

    ASYMMETRY MEASUREMENT APPARATUS
    3.
    发明申请
    ASYMMETRY MEASUREMENT APPARATUS 审中-公开
    不对称测量装置

    公开(公告)号：US20070280079A1

    公开(公告)日：2007-12-06

    申请号：US11758006

    申请日：2007-06-05

    申请人： Yuh Cheng ,  Chih-Ching Chen ,  Chia-Wei Liao ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Shu-Hung Chou ,  Yu-Hsuan Lin

    发明人： Yuh Cheng ,  Chih-Ching Chen ,  Chia-Wei Liao ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Shu-Hung Chou ,  Yu-Hsuan Lin

    IPC分类号： G11B20/10

    CPC分类号： G11B20/10009 ,  G11B2220/2537

    摘要： An asymmetry measurement apparatus is disclosed. The asymmetry measurement apparatus is designed for detecting the recorded data reproduction waveform of an optical storage device in digital domain. The asymmetry measurement apparatus includes an Analog to Digital Converter (ADC) for converting an analog signal to a digital signal; a detection unit for detecting plurality values of the digital signal; and an asymmetry calculation unit for generating an asymmetry value of the digital signal according to the plurality values.

    摘要翻译： 公开了一种不对称测量装置。 不对称测量装置被设计用于检测数字域中的光存储装置的记录数据再现波形。 不对称测量装置包括用于将模拟信号转换为数字信号的模数转换器（ADC）; 检测单元，用于检测数字信号的多个值; 以及不对称计算单元，用于根据多个值产生数字信号的不对称值。

    APPARATUS AND METHODS FOR LIGHT SPOT SERVO SIGNAL DETECTION
    4.
    发明申请
    APPARATUS AND METHODS FOR LIGHT SPOT SERVO SIGNAL DETECTION 有权
    用于轻点服务信号检测的装置和方法

    公开(公告)号：US20070280059A1

    公开(公告)日：2007-12-06

    申请号：US11757426

    申请日：2007-06-04

    申请人： Yuh Cheng ,  Chih-Ching Chen ,  Chia-Wei Liao ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Shu-Hung Chou ,  Yu-Hsuan Lin

    发明人： Yuh Cheng ,  Chih-Ching Chen ,  Chia-Wei Liao ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Shu-Hung Chou ,  Yu-Hsuan Lin

    IPC分类号： G11B7/00

    CPC分类号： G11B7/094 ,  G11B7/0941 ,  G11B7/0956 ,  G11B20/10009 ,  G11B2020/1287

    摘要： An apparatus for light spot servo signal detection for reading an optical recording medium having a plurality of non-writable areas between writable data areas containing address information. An optical pickup provides a light spot to the non-writable areas of the optical recording medium with a predetermined state according to a control signal, and detects optical reflecting signals from the optical recording medium to generate a detection signal. A signal adjusting module offsets signal levels of the detection signal to an operating range to generate an offset shifted detection signal. An analog to digital converter digitizes the offset shifted detection signal to generate a digital signal. A detection circuit detects the servo detection signal according to the digital signal.

    摘要翻译： 一种光点伺服信号检测装置，用于读取在包含地址信息的可写数据区之间具有多个不可写区域的光记录介质。 光拾取器根据控制信号以预定状态向光记录介质的不可写区域提供光点，并且检测来自光记录介质的光反射信号以产生检测信号。 信号调整模块将检测信号的信号电平偏移到工作范围以产生偏移移位的检测信号。 模数转换器对偏移检测信号进行数字化以产生数字信号。 检测电路根据数字信号检测伺服检测信号。

    Apparatus and methods for light spot servo signal detection
    6.
    发明授权
    Apparatus and methods for light spot servo signal detection 有权
    光点伺服信号检测装置及方法

    公开(公告)号：US07796480B2

    公开(公告)日：2010-09-14

    申请号：US11757426

    申请日：2007-06-04

    申请人： Yuh Cheng ,  Chih-Ching Chen ,  Chia-Wei Liao ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Shu-Hung Chou ,  Yu-Hsuan Lin

    发明人： Yuh Cheng ,  Chih-Ching Chen ,  Chia-Wei Liao ,  Ming-Jiou Yu ,  Kuo-Jung Lan ,  Shu-Hung Chou ,  Yu-Hsuan Lin

    IPC分类号： G11B7/00

    CPC分类号： G11B7/094 ,  G11B7/0941 ,  G11B7/0956 ,  G11B20/10009 ,  G11B2020/1287

    摘要： An apparatus for light spot servo signal detection for reading an optical recording medium having a plurality of non-writable areas between writable data areas containing address information. An optical pickup provides a light spot to the non-writable areas of the optical recording medium with a predetermined state according to a control signal, and detects optical reflecting signals from the optical recording medium to generate a detection signal. A signal adjusting module offsets signal levels of the detection signal to an operating range to generate an offset shifted detection signal. An analog to digital converter digitizes the offset shifted detection signal to generate a digital signal. A detection circuit detects the servo detection signal according to the digital signal.

    摘要翻译： 一种光点伺服信号检测装置，用于读取在包含地址信息的可写数据区之间具有多个不可写区域的光记录介质。 光拾取器根据控制信号以预定状态向光记录介质的不可写区域提供光点，并且检测来自光记录介质的光反射信号以产生检测信号。 信号调整模块将检测信号的信号电平偏移到工作范围以产生偏移移位的检测信号。 模数转换器对偏移检测信号进行数字化以产生数字信号。 检测电路根据数字信号检测伺服检测信号。

    APPARATUS AND METHOD OF GENERATING ZERO CROSSING SIGNAL FOR OPTICAL DISC DRIVE
    7.
    发明申请
    APPARATUS AND METHOD OF GENERATING ZERO CROSSING SIGNAL FOR OPTICAL DISC DRIVE 审中-公开
    用于光盘驱动的零交叉信号的生成装置和方法

    公开(公告)号：US20070280062A1

    公开(公告)日：2007-12-06

    申请号：US11758102

    申请日：2007-06-05

    申请人： Kuo-Jung Lan ,  Chih-Ching Chen ,  Chia-Wei Liao ,  Yuh Cheng ,  Ming-Jiou Yu ,  Yu-Hsuan Lin ,  Shu-Hung Chou

    发明人： Kuo-Jung Lan ,  Chih-Ching Chen ,  Chia-Wei Liao ,  Yuh Cheng ,  Ming-Jiou Yu ,  Yu-Hsuan Lin ,  Shu-Hung Chou

    IPC分类号： G11B7/00

    CPC分类号： G11B20/10009 ,  G11B20/10027 ,  G11B20/10037 ,  G11B20/10046

    摘要： An apparatus and method of generating a zero crossing signal for an optical disc drive to reduce width deviation due to sampling effect, thereby improving servo control and detection. An embodiment of the apparatus comprises a reshaping device receiving a first digital servo signal of the optical disc drive to upsample the first digital servo signal data, thereby generating a second digital servo signal with higher resolution than the first digital servo signal; and a servo control-and-detection device receiving and slicing the second digital servo signal to generate a servo zero crossing signal.

    摘要翻译： 一种用于产生用于光盘驱动器的过零信号以减少由于采样效应引起的宽度偏差的装置和方法，从而改善伺服控制和检测。 该装置的一个实施例包括重新成形装置，接收光盘驱动器的第一数字伺服信号以对第一数字伺服信号数据进行上采样，从而产生具有比第一数字伺服信号更高分辨率的第二数字伺服信号; 以及伺服控制和检测装置，接收和分割第二数字伺服信号以产生伺服过零信号。

    Methods and devices for detecting wobbles on an optical disc
    9.
    发明授权
    Methods and devices for detecting wobbles on an optical disc 有权
    用于检测光盘上的摆动的方法和装置

    公开(公告)号：US08270266B2

    公开(公告)日：2012-09-18

    申请号：US12357409

    申请日：2009-01-22

    申请人： Tzu-Chieh Lin ,  Yuh Cheng ,  Chih-Ching Chen ,  Tysh-Bin Liu ,  Yu-Hsuan Lin

    发明人： Tzu-Chieh Lin ,  Yuh Cheng ,  Chih-Ching Chen ,  Tysh-Bin Liu ,  Yu-Hsuan Lin

    IPC分类号： G11B7/00

    CPC分类号： G11B7/0053 ,  G11B20/10009 ,  G11B20/10027 ,  G11B20/10046 ,  G11B2020/1239 ,  G11B2020/1268 ,  G11B2020/1274 ,  G11B2220/2537

    摘要： A device for detecting wobbles on an optical disc is provided, where the device is utilized for generating a wobble signal according to a plurality of detection signals. The device includes an analog signal processing circuit, a pair of analog-to-digital converters (ADCs), and a digital signal processing circuit. The analog signal processing circuit is arranged to perform analog signal processing on the detection signals to generate a plurality of output signals. In addition, the pair of ADCs are arranged to digitalize the output signals to generate a plurality of digital values. Additionally, the digital signal processing circuit is arranged to perform digital signal processing on the digital values and generate an arithmetic output, where the arithmetic output is utilized for generating the wobble signal or utilized as the wobble signal. An associated method for detecting wobbles on an optical disc is further provided.

    摘要翻译： 提供一种用于检测光盘上的摆动的装置，其中该装置用于根据多个检测信号产生摆动信号。 该器件包括模拟信号处理电路，一对模数转换器（ADC）和数字信号处理电路。 模拟信号处理电路被配置为对检测信号执行模拟信号处理以产生多个输出信号。 此外，这对ADC被布置成将输出信号数字化以产生多个数字值。 此外，数字信号处理电路被配置为对数字值执行数字信号处理并产生运算输出，其中运算输出用于产生摆动信号或用作摆动信号。 还提供了一种用于检测光盘上的摆动的相关方法。

    Method and apparatus for blank detection of an optical disc
    10.
    发明授权
    Method and apparatus for blank detection of an optical disc 失效
    光盘空白检测方法和装置

    公开(公告)号：US07684291B2

    公开(公告)日：2010-03-23

    申请号：US11559416

    申请日：2006-11-14

    申请人： Yu-Hsuan Lin ,  Yuh Cheng ,  Chih-Ching Chen

    发明人： Yu-Hsuan Lin ,  Yuh Cheng ,  Chih-Ching Chen

    IPC分类号： G11B7/00

    CPC分类号： G11B20/10009 ,  G11B20/10027 ,  G11B20/10037 ,  G11B20/10046 ,  G11B27/22 ,  G11B2220/2537 ,  H03G3/3084

    摘要： An optical storage device and a blank detection method thereof are disclosed. An RF signal is obtained from an optical disc. A various gain amplifier amplifies the RF signal based on a control signal. An analog to digital converter samples the amplified RF signal to obtain a data signal. An auto gain controller updates the control signal based on amplitude of the data signal. A blank detector detects blankness of the data signal based on a threshold. The threshold is provided by a threshold generator based on the control signal. If the amplitude of the data signal does not exceed the threshold, the blank detector sends a hold signal to suspend update of the control signal.

    摘要翻译： 公开了一种光存储装置及其空白检测方法。 从光盘获得RF信号。 各种增益放大器基于控制信号来放大RF信号。 模数转换器对放大的RF信号进行采样以获得数据信号。 自动增益控制器根据数据信号的幅度更新控制信号。 空白检测器基于阈值检测数据信号的空白。 阈值由基于控制信号的阈值发生器提供。 如果数据信号的幅度不超过阈值，则空白检测器发送保持信号以暂停更新控制信号。