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156 条记录 (耗时 0.026 秒)

    Frequency detection apparatus and method for generation of a clock signal for optical disc
    121.
    发明申请
    Frequency detection apparatus and method for generation of a clock signal for optical disc 失效
    用于产生光盘的时钟信号的频率检测装置和方法

    公开(公告)号：US20050007929A1

    公开(公告)日：2005-01-13

    申请号：US10842646

    申请日：2004-05-11

    申请人： Hyun-soo Park ,  Jae-seong Shim

    发明人： Hyun-soo Park ,  Jae-seong Shim

    IPC分类号： G11B20/10 ,  G11B20/14 ,  G11B5/09

    CPC分类号： G11B20/10046 ,  G11B20/1403

    摘要： A frequency detection apparatus and method for generating a stable clock signal synchronized with an input signal and a signal boost filter used in the frequency detection apparatus and method, the frequency detection apparatus includes a signal boost filter filtering out the high frequency component of an input signal and boosting the high frequency component, and a frequency detector receiving an input signal with the boosted high frequency component and a clock signal, detecting a frequency difference between the input signal and the clock signal, and producing a control voltage corresponding to the frequency difference. Accordingly, even when there is a big difference between the frequency of the input signal and an oscillating frequency, a frequency error can be stably detected. Thus, a stable clock signal can be obtained.

    摘要翻译： 一种用于产生与在频率检测装置和方法中使用的输入信号和信号升压滤波器同步的稳定时钟信号的频率检测装置和方法，所述频率检测装置包括滤除输入信号的高频分量的信号升压滤波器 并且提高高频分量，以及频率检测器，接收具有升高的高频分量的输入信号和时钟信号，检测输入信号和时钟信号之间的频率差，并产生对应于频率差的控制电压。 因此，即使在输入信号的频率和振荡频率之间存在很大差异的情况下，也能够稳定地检测频率误差。 因此，可以获得稳定的时钟信号。

    Selective disturbance compensating apparatus used in reproduction from optical recording medium and 3T-correcting method
    122.
    发明授权
    Selective disturbance compensating apparatus used in reproduction from optical recording medium and 3T-correcting method 失效
    用于从光记录介质再现的选择性干扰补偿装置和3T校正方法

    公开(公告)号：US06791919B2

    公开(公告)日：2004-09-14

    申请号：US09961331

    申请日：2001-09-25

    申请人： Jae-seong Shim ,  Ki-hyun Kim ,  Hyun-soo Park

    发明人： Jae-seong Shim ,  Ki-hyun Kim ,  Hyun-soo Park

    IPC分类号： G11B700

    CPC分类号： G11B20/10009

    摘要： A selective disturbance compensating apparatus for use in reproduction from an optical recording medium, and a 3T-correcting method. A DC offset canceller extracts a DC offset from a reproduction signal to cancel the DC offset. An equalizer equalizes the offset-cancelled signal. A switching unit selects between the offset-canceled signal and the equalized signal according to whether distortion caused by asymmetry of the signal is above or below a predetermined reference level. A 3-T correcting unit corrects asymmetry of the selected signal. In another embodiment, a second switching unit selects between the 3-T corrected signal and a Viterbi corrected signal.

    摘要翻译： 一种用于从光记录介质再现的选择性干扰补偿装置和3T校正方法。 DC偏移消除器从再现信号中提取DC偏移以抵消DC偏移。 均衡器平衡偏移消除信号。 根据由信号的不对称引起的失真是否高于或低于预定参考电平，开关单元在偏移消除信号和均衡信号之间进行选择。 3-T校正单元校正所选信号的不对称性。 在另一个实施例中，第二切换单元在3-T校正信号和维特比校正信号之间进行选择。

    Method of modulating and/or demodulating RLL code having enhanced direct current suppression capability
    123.
    发明授权
    Method of modulating and/or demodulating RLL code having enhanced direct current suppression capability 失效

    公开(公告)号：US06441756B1

    公开(公告)日：2002-08-27

    申请号：US09946784

    申请日：2001-09-06

    申请人： Jae-seong Shim

    发明人： Jae-seong Shim

    IPC分类号： H03M700

    CPC分类号： G11B20/1426 ,  G11B20/10 ,  G11B2020/1442 ,  G11B2020/1457 ,  H03M5/14 ,  H03M5/145 ,  H03M7/46

    摘要： A method of modulating and a method of demodulating for a run length limited (RLL) code having an improved direct current (DC) suppression capability. Received data is modulated using a DC suppression control code group which is separate from a data modulation conversion code group. The DC suppression control code group maximizes use of the characteristics of codewords in conversion code groups, such as, the sign of parameter CSV representing the DC value within a codeword and the characteristics of parameter INV predicting the DSV transition direction of the next codeword, while relaxing the redundant codeword generation condition or the condition of usable codewords compared with the data modulation conversion code group. Therefore, the number of codewords increases, so that the probability of DC suppression control further increases.

    Method for determining characteristics of signal and apparatus using the same
    124.
    发明授权
    Method for determining characteristics of signal and apparatus using the same 有权
    用于确定信号和使用其的装置的特性的方法

    公开(公告)号：US08385173B2

    公开(公告)日：2013-02-26

    申请号：US12823943

    申请日：2010-06-25

    申请人： Hyun-soo Park ,  Jae-wook Lee ,  Jae-seong Shim ,  Jung-hyun Lee ,  Eing-seob Cho ,  Eun-jin Ryu

    发明人： Hyun-soo Park ,  Jae-wook Lee ,  Jae-seong Shim ,  Jung-hyun Lee ,  Eing-seob Cho ,  Eun-jin Ryu

    IPC分类号： G11B7/00

    CPC分类号： G11B20/10009 ,  G11B2020/10555

    摘要： A method of determining characteristics of a signal and an apparatus using the method. The apparatus for determining characteristics of a signal includes: a level detector receiving sample values of a radio frequency (RF) signal and binary data obtained by binarizing the RF signal, generating selection signals based on the binary data, classifying each of the sample values of the RF signal into one of a plurality of levels using the selection signals, and outputting average values of sample values of each level; and a signal characteristics determiner determining a characteristics value that indicates the characteristics of the RF signal using the average values of the sample values belonging to each level.

    摘要翻译： 一种确定信号特性的方法和使用该方法的装置。 用于确定信号特性的装置包括：电平检测器，其接收射频（RF）信号的采样值和通过二值化RF信号获得的二进制数据，基于二进制数据产生选择信号，将每个样本值 使用所述选择信号将所述RF信号变换成多个电平之一，并输出各电平的采样值的平均值; 以及信号特性确定器，其使用属于每个级别的样本值的平均值来确定指示RF信号的特性的特性值。

    Frequency detection apparatus and method for generation of a clock signal for optical disc
    125.
    发明授权
    Frequency detection apparatus and method for generation of a clock signal for optical disc 失效
    用于产生光盘的时钟信号的频率检测装置和方法

    公开(公告)号：US08223603B2

    公开(公告)日：2012-07-17

    申请号：US10842646

    申请日：2004-05-11

    申请人： Hyun-soo Park ,  Jae-seong Shim

    发明人： Hyun-soo Park ,  Jae-seong Shim

    IPC分类号： G11B7/00

    CPC分类号： G11B20/10046 ,  G11B20/1403

    摘要： A frequency detection apparatus and method for generating a stable clock signal synchronized with an input signal and a signal boost filter used in the frequency detection apparatus and method, the frequency detection apparatus includes a signal boost filter filtering out the high frequency component of an input signal and boosting the high frequency component, and a frequency detector receiving an input signal with the boosted high frequency component and a clock signal, detecting a frequency difference between the input signal and the clock signal, and producing a control voltage corresponding to the frequency difference. Accordingly, even when there is a big difference between the frequency of the input signal and an oscillating frequency, a frequency error can be stably detected. Thus, a stable clock signal can be obtained.

    摘要翻译： 一种用于产生与在频率检测装置和方法中使用的输入信号和信号升压滤波器同步的稳定时钟信号的频率检测装置和方法，所述频率检测装置包括滤除输入信号的高频分量的信号升压滤波器 并且提高高频分量，以及频率检测器，接收具有升高的高频分量的输入信号和时钟信号，检测输入信号和时钟信号之间的频率差，并产生对应于频率差的控制电压。 因此，即使在输入信号的频率和振荡频率之间存在很大差异的情况下，也能够稳定地检测频率误差。 因此，可以获得稳定的时钟信号。

    Data modulating method and apparatus, data demodulating method and apparatus, and code arranging method
    126.
    发明授权
    Data modulating method and apparatus, data demodulating method and apparatus, and code arranging method 有权
    数据调制方法及装置，数据解调方法及装置及代码排列方法

    公开(公告)号：US07876241B2

    公开(公告)日：2011-01-25

    申请号：US11944084

    申请日：2007-11-21

    申请人： Jae-seong Shim ,  Jin-han Kim ,  Kiu-hae Jung

    发明人： Jae-seong Shim ,  Jin-han Kim ,  Kiu-hae Jung

    IPC分类号： H03M7/00

    CPC分类号： G11B20/1426 ,  H03M5/145

    摘要： In a data demodulating method and apparatus, and a code arranging method, a multiplexer multiplexes an input data stream divided by a predetermined length into a plurality of types of pseudo-random data streams using multiplexed information of predetermined bits by applying a predetermined multiplexing method to each of the pseudo-random data streams. An encoder RLL-modulates the plurality of types of pseudo-random data streams to create a modulated code stream including a minimum of DC components. The multiplexer generates the random data streams by inconsecutively scrambling the input data stream using the multiplexed information. The encoder weak DC-free RLL-modulates each of the multiplexed data streams without using a DC control sub code conversion table to which additional bits are added and provides a code stream including a minimum of DC components among multiplexed, RLL-modulated code streams.

    摘要翻译： 在数据解调方法和装置以及代码排列方法中，通过将预定的多路复用方式应用到预定的多路复用方式，通过使用预定比特的多路复用信息，将预定长度分割的输入数据流复用到多种类型的伪随机数据流中 每个伪随机数据流。 编码器RLL调制多种类型的伪随机数据流以创建包括最小DC分量的调制码流。 复用器通过使用多路复用信息不断地对输入数据流进行加扰来产生随机数据流。 编码器弱无DC的RLL调制每个复用的数据流，而不使用添加了附加位的DC控制子码转换表，并且在多路复用的RLL调制码流之间提供包括最小DC分量的码流。