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    Signal-to-noise ratio measurement apparatus and method for signal read out of optical disc
    2.
    发明公开
    Signal-to-noise ratio measurement apparatus and method for signal read out of optical disc 有权
    StörsignalabstandMeß-apparat und -methodefürSignale aus optischer Scheibe。

    公开(公告)号：EP1724775A1

    公开(公告)日：2006-11-22

    申请号：EP06113964.8

    申请日：2006-05-15

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Park, Hyun-soo ,  Shim, Jae-seong

    IPC: G11B20/00

    CPC classification number: G11B20/182 ,  G11B20/18

    Abstract: A signal-to-noise ratio measurement apparatus for a signal read from an optical disc comprises a storage unit (200) for storing an input signal read from an optical disc; an index signal detection unit (300) for detecting an index signal enabling repetition signals to be identified, the repetition representing an input signal that is continuously repeated in a certain interval; and a calculation unit (400) for reading the repetition signals stored in the storage unit (200) based on the index signal, detecting an original signal indicating an average value of the repetition signals, detecting noise contained in the repetition signals based on a difference value between the original signal and the repetition signals, and calculating a signal-to-noise ratio of the input signal based on the original signal and noise. Accordingly, the apparatus measures the quality of an optical disc by calculating a signal-to-noise ratio of an input signal continuously repeated, thereby enabling the quality of the optical disc to be measured even when jitter can not be detected due to the high recording density of the optical disc.

    Abstract translation: 用于从光盘读取的信号的信噪比测量装置包括用于存储从光盘读取的输入信号的存储单元（200） 用于检测能够识别重复信号的索引信号的索引信号检测单元（300），表示在一定间隔内连续重复的输入信号的重复; 以及计算单元（400），用于基于索引信号读取存储在存储单元（200）中的重复信号，检测指示重复信号的平均值的原始信号，基于差异检测重复信号中包含的噪声 在原始信号和重复信号之间的值，并且基于原始信号和噪声来计算输入信号的信噪比。 因此，该装置通过计算连续重复的输入信号的信噪比来测量光盘的质量，由此即使由于高记录而无法检测到抖动，也能够测量光盘的质量 光盘的密度。

    Pseudo-random data generator and scrambler using the same
    4.
    发明公开
    Pseudo-random data generator and scrambler using the same 审中-公开
    伪随机数生成器和扰频器特此

    公开(公告)号：EP1069497A3

    公开(公告)日：2005-02-09

    申请号：EP00305779.1

    申请日：2000-07-07

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Shim, Jae-seong

    IPC: G06F7/58

    CPC classification number: G06F7/584 ,  G11B20/10 ,  G11B20/1426

    Abstract: A random data generator and a scrambler using the same are provided. The random data generator includes a m×n decoder (100) for receiving m bits and outputting n bits, registers (r 0 -r n-1 ) arranged in series for shifting and storing the n bits, and selection output circuits (m 0 -m n-1 ) for receiving n bits of output from the m×n decoder (100) as selection signals, and providing "0" with respect to valid bits among the n bits of output from the m×n decoder (100) and providing the outputs of the registers (r 0 -r n-1 ) with respect to invalid bits. The random data generator also includes logic circuits (G 0 -G n-1 ) for performing XOR operations with respect to the n bits of output from the selection output circuits (m 0 -m n-1 ) and the n bits of output from the registers (r 0 -r n-1 ), and feeding the results of the XOR operations back to a least significant register (r 0 ) only in the case of valid bits among the n bits of output from the m×n decoder (100). Accordingly, random data having a cycle of 64K or greater can be generated, and a random data generator for 2 m ×64K can be realized with the m×n decoder.

    Apparatus and method for modulating and demodulating address data for a disc type recording medium
    7.
    发明公开
    Apparatus and method for modulating and demodulating address data for a disc type recording medium 审中-公开
    装置和方法，用于调制和地址数据的解调的盘形记录介质上

    公开(公告)号：EP1411519A2

    公开(公告)日：2004-04-21

    申请号：EP03254111.2

    申请日：2003-06-27

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Kim, Jin-han, 221-1004 Daerim Apt. ,  Shim, Jae-seong ,  Park, Hyun-soo, 701 Dongil Apt.

    IPC: G11B20/14 ,  G11B27/19 ,  G11B27/30 ,  G11B7/007

    CPC classification number: G11B27/24 ,  G11B7/0053 ,  G11B7/24082 ,  G11B20/1403 ,  G11B20/18 ,  G11B27/3027 ,  G11B2020/1823 ,  G11B2020/1836 ,  G11B2220/216 ,  G11B2220/218 ,  G11B2220/2562

    Abstract: Provided are an apparatus and method for modulating and demodulating address data. The apparatus for modulating address data includes an address data generating unit (110), an error correction coding unit (120), a modulating unit (130), and a wobble signal generating unit (140). The address data generating unit (110) generates address data and the error correction coding unit (120) performs error correction coding of the address data received from the address data generating unit (110). The modulating unit (130) generates a first modulated signal using a first modulation technique and a second modulated signal using a second modulation technique, after receiving the coded address data in a unit of at least 2 bits from the error correction coding unit (120). The wobble signal generating unit (140) generates a unit wobble signal by synthesizing the first and second modulated signals received from the modulating unit (130).

    Abstract translation: 由一个发生器（110）生成的地址数据是由在编码器（120），用于纠错编码。 用于对编码数据的调制信号，使用由二进制相移键控（BPSK）和频移键控（FSK）方法调制器（131.133）中产生。 调制信号被合成以生成单元摆动信号。 因此独立权利要求中包括了以下内容：（1）地址的数据调制装置; （2）地址的数据的解调方法; （3）的地址数据解调装置; （4）光盘; （5）记录介质，其存储地址的数据调制方案; 及（6）的地址数据解调方案。

    Apparatus and method of updating filter tap coefficients of equalizer
    8.
    发明公开
    Apparatus and method of updating filter tap coefficients of equalizer 审中-公开
    Vorrichtung und Verfahren zur Aktualisierung von Filterabgreifkoeffizienten eines Entzerrers

    公开(公告)号：EP1365402A2

    公开(公告)日：2003-11-26

    申请号：EP03252017.3

    申请日：2003-03-31

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Shim, Jae-seong ,  Park, Hyun-soo ,  Lee, Jae-wook ,  Lee, Jung-hyun

    IPC: G11B20/10

    CPC classification number: G11B20/10009 ,  G11B20/18

    Abstract: An apparatus and method of updating the filter tap coefficients of an equalizer used in an optical disc recording/reproducing apparatus, and a computer readable recording medium that stores a program for implementing the method. A filter unit (106) filters an error signal included in an input signal, which is a radio frequency (RF) signal reflected by an optical disc. A defect signal detection unit (107) detects whether the input signal is defective and outputs an update stop signal. A coefficient updating unit (111) stops updating a plurality of filter tap coefficients of the filter unit (106) in response to the update stop signal and outputs the current filter tap coefficients to the filter unit (106). By using the filter tap coefficient updating apparatus, the filter tap coefficient updating is normally performed without errors even if a defect exists on an optical disc or track jumping occurs, so that freezing or breaking of an image screen is prevented.

    Abstract translation: 更新光盘记录/再现装置中使用的均衡器的滤波器抽头系数的装置和方法，以及存储用于实现该方法的程序的计算机可读记录介质。 滤波器单元（106）对包括在由光盘反射的射频（RF）信号的输入信号中包括的误差信号进行滤波。 缺陷信号检测单元（107）检测输入信号是否有缺陷并输出更新停止信号。 系数更新单元（111）响应于更新停止信号停止更新滤波器单元（106）的多个滤波器抽头系数，并将当前滤波器抽头系数输出到滤波器单元（106）。 通过使用滤波器抽头系数更新装置，即使在光盘上存在缺陷或发生轨迹跳跃，通常也无误地执行滤波器抽头系数更新，从而防止图像屏幕的冻结或断开。

    Apparatus and method for generating soft output of signal passing through channel
    9.
    发明公开
    Apparatus and method for generating soft output of signal passing through channel 审中-公开
    Apparat und Verfahren zur Erzeugung des“Soft-Outputs”eines den KanaldurchströmendenSignales

    公开(公告)号：EP1361662A1

    公开(公告)日：2003-11-12

    申请号：EP02258582.2

    申请日：2002-12-12

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Kim, Ki-hyun ,  Han, Sung-hyu ,  Park, In-sik ,  Shim, Jae-seong

    IPC: H03M13/45 ,  G11B20/18 ,  G11B20/10 ,  H03M13/37

    CPC classification number: G11B20/18 ,  G11B20/10

    Abstract: Provided are an apparatus and method for generating a soft output of a signal. The method including inputting an input signal that is a discrete signal converted from an analog signal passing through a channel having predetermined characteristics such as a recording medium; setting a point in time, as a first reference point, at which a code of a value of the input signal is inverted, and detecting a predetermined number of inversion sections at the first reference point; setting points in time, as second reference points, when the input signal has a discrete value within the inversion section, and calculating all of error paths of target values at the each time, the target values including the values of the input signal at the second reference points and the values of signals at each time, and the error paths being a set of the target values; calculating accumulated errors for the error paths with the values of input signal within the inversion section and the values of the error paths, and calculating maximum values of the accumulated errors for the error paths at the second reference points; calculating a log likelihood relation (LLR) value using the maximum values at the second reference points; and replacing the values of the input signal within the inversion section of a predetermined range with the LLR values and outputting the LLR values. Accordingly, soft outputs of signals, which pass through a channel having predetermined characteristics, are generated for error paths of only the signals that intersect at a zero point, thereby remarkably reducing calculation time.

    Abstract translation: 提供了一种用于产生信号的软输出的装置和方法。 该方法包括输入作为从通过具有预定特征的通道的模拟信号（例如记录介质）转换的离散信号的输入信号; 将作为第一参考点的时间点设置为输入信号的值的代码反转，并且检测在第一参考点处的预定数量的反转部分; 设置时间点作为第二参考点，当输入信号在反转部分内具有离散值，并且计算每次目标值的所有误差路径时，目标值包括第二参考点处的输入信号的值 参考点和每次信号的值，并且误差路径是一组目标值; 利用反演部分内的输入信号的值和误差路径的值计算误差路径的累积误差，计算第二参考点的误差路径累积误差的最大值; 使用第二参考点处的最大值计算对数似然关系（LLR）值; 并用LLR值代替预定范围的反转部分内的输入信号的值并输出LLR值。 因此，仅通过与零点相交的信号的错误路径产生通过具有预定特性的信道的信号的软输出，从而显着地减少计算时间。

    Data modulation and correction methods
    10.
    发明公开
    Data modulation and correction methods 审中-公开
    Datenkorrekturverfahren

    公开(公告)号：EP1197967A2

    公开(公告)日：2002-04-17

    申请号：EP01307489.3

    申请日：2001-09-03

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Shim, Jae-seong ,  Lee, Kyung-geun, 122-1002 Sibeom Hanshin ,  Kim, Ki-hyun ,  Park, Hyun-soo

    IPC: G11B20/14 ,  G11B20/18

    CPC classification number: H03M13/31 ,  G11B20/1426 ,  H03M5/145

    Abstract: A data modulation method resistant to channel distortion and a method for correcting error in data coded by the modulation method are provided. The data modulation method uses a run length limited (RLL) modulation code applied to write data to an optical storage medium, the RLL modulation code being expressed as RLL ( d , k, m, n, s ) with s = 2 or greater, where d is minimum run length, k is maximum run length, m is the data bit length before modulation, n is the codeword bit length after modulation, and s is the space length between codewords. The data modulation and correction methods can reduce a redundancy in physical address data written to an optical storage medium with improved detection performance resistant to disturbance.

    Abstract translation: 提供了一种抵抗信道失真的数据调制方法以及用于校正通过调制方法编码的数据中的错误的方法。 数据调制方法使用用于向光存储介质写入数据的行程限制（RLL）调制码，RLL调制码表示为s = 2或更大的RLL（d，k，m，n，s） 其中d是最小游程长度，k是最大游程长度，m是调制前的数据比特长度，n是调制后的码字比特长度，s是码字之间的间隔长度。 数据调制和校正方法可以减少写入光存储介质的物理地址数据的冗余，并具有改善的抗干扰的检测性能。

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