公开(公告)号：US06696991B2

公开(公告)日：2004-02-24

申请号：US10160082

申请日：2002-06-04

申请人： Jae-seong Shim ,  Ki-hyun Kim ,  Hyun-soo Park ,  Iqbal Mahboob ,  Kiu-hae Jung

发明人： Jae-seong Shim ,  Ki-hyun Kim ,  Hyun-soo Park ,  Iqbal Mahboob ,  Kiu-hae Jung

IPC分类号： H03M700

CPC分类号： G11B20/1426 ,  G11B7/004

摘要： A code modulation and demodulation method includes removing a DC component of a code stream to be modulated when source data is recorded on an optical information storage medium and controlling a suppression of the DC component contained in the code stream when the source data is converted into a codeword to be recorded on an optical information storage medium. The method includes determining a control timing to suppress the DC component of the code stream to which the source data are converted, performing a code conversion at each control time for the DC component so that the code stream branches into a pair of branch code streams one of which extends in a direction where a running digital sum (RDS) of the code stream increases, and another one of which extends in the direction where the RDS of the code stream decreases, and selecting the path of the code stream that has a most bounded path around RDS ‘0’ from the paths of the branch code streams each control time. By performing a regular DC suppression control when the source data is converted, and by selecting one of the branch code streams when the DC suppression control is performed, more DC components in the code stream can be effectively removed.

摘要翻译： 代码调制和解调方法包括当源数据被记录在光学信息存储介质上时，去除要调制的码流的DC分量，并且当源数据被转换成一个时，控制对包含在码流中的DC分量的抑制 要记录在光信息存储介质上的码字。 该方法包括确定抑制源数据被转换的码流的DC分量的控制定时，在DC分量的每个控制时间执行码转换，使得码流分支成一对分支码流1 其中代码流的运行数字和（RDS）增加的方向延伸，另一个方向在代码流的RDS的方向上延伸，并且选择具有最多代码流的代码流的路径 每个控制时间从分支代码流的路径围绕RDS'0'的有界路径。 通过在源数据被转换时执行常规DC抑制控制，并且当执行DC抑制控制时通过选择一个分支代码流，可以有效地去除代码流中的更多的DC分量。

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。

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。

公开(公告)号：US08145968B2

公开(公告)日：2012-03-27

申请号：US12034089

申请日：2008-02-20

申请人： Hyun-soo Park

发明人： Hyun-soo Park

IPC分类号： H04L1/00 ,  G06F11/30 ,  G08C25/00 ,  H03M13/00

CPC分类号： G11C7/02 ,  G11C7/1006 ,  G11C11/5642 ,  G11C16/3418 ,  G11C29/00 ,  G11C2211/5634

摘要： A method and apparatus to determine a binary signal of a memory cell capable of decreasing an error rate of binary signal determination that occur due to neighboring cells and noise, the apparatus including: a data collection unit to collect target data stored in a target cell in a memory and binary neighboring data of data stored in at least one neighboring cell that neighbors the target cell; a data correction unit to correct the target data collected from the target cell by using the target data and the binary neighboring data collected by the data collection unit and a parameter; and a binary signal determination unit to determine a binary signal of a corrected signal output from the data correction unit.

摘要翻译： 一种用于确定能够减少由于相邻小区和噪声而导致的二进制信号确定的错误率的存储器单元的二进制信号的方法和装置，所述装置包括：数据收集单元，用于收集存储在目标单元中的目标数据 存储在存储在邻近所述目标小区的至少一个相邻小区中的数据的存储器和二进制邻近数据; 数据校正单元，用于通过使用由数据收集单元收集的目标数据和二进制相邻数据以及参数来校正从目标单元收集的目标数据; 以及二进制信号确定单元，用于确定从数据校正单元输出的校正信号的二进制信号。

公开(公告)号：US07394735B2

公开(公告)日：2008-07-01

申请号：US10429954

申请日：2003-05-06

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

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

IPC分类号： G11B7/004

CPC分类号： G11B20/10009 ,  G11B20/18

摘要： An apparatus, a method, and a computer readable recording medium thereof to update filter tap coefficients of an equalizer include a defect signal detection unit and a coefficient updating unit. The defect signal detection unit receives a sampled input signal reflected from an optical disc and/or a track jump signal, detects whether the input signal and/or the track jump signal are defective, and outputs an update stop signal indicative thereof. The coefficient updating unit stops the updating of the filter tap coefficients in response to the update stop signal and outputs current filter tap coefficients.

摘要翻译： 用于更新均衡器的滤波器抽头系数的装置，方法和计算机可读记录介质包括缺陷信号检测单元和系数更新单元。 缺陷信号检测单元接收从光盘反射的采样输入信号和/或轨道跳转信号，检测输入信号和/或轨道跳转信号是否有缺陷，并输出指示其的更新停止信号。 系数更新单元响应于更新停止信号停止更新滤波器抽头系数，并输出当前滤波器抽头系数。

公开(公告)号：US07330408B2

公开(公告)日：2008-02-12

申请号：US10721782

申请日：2003-11-26

申请人： Chekcheyev Sergey ,  Hyun-soo Park ,  Chang-jin Yang ,  Wook-yeon Hwang

发明人： Chekcheyev Sergey ,  Hyun-soo Park ,  Chang-jin Yang ,  Wook-yeon Hwang

IPC分类号： G11B5/09

CPC分类号： G11B20/10046 ,  G11B20/10009 ,  H04L25/03006 ,  H04L2025/03471 ,  H04L2025/03528

摘要： An equalizer for a high density optical disc reproducing apparatus and an equalizing method therefore are provided. The equalizer includes: a non-linear transformer, which transforms an input signal according to predetermined threshold levels; a cosine transform filter, which inverts phases of high frequency spectrum components of an output signal of the non-linear transformer; a high boost filter, which increases amplitudes of high frequency spectrum components of the input signal; and an adder, which adds an output signal of the cosine transform filter with an output signal of the high boost filter. Therefore, the equalizer can increase recording density of the optical disc in the high density optical disc reproducing apparatus and accordingly increase recording amount of information, by reducing inter-signal interference (ISI) and increasing a signal-to-noise ratio in the output signal of the equalizer. Also, the equalizer has a simple configuration.

摘要翻译： 因此，提供了用于高密度光盘再现装置的均衡器和均衡方法。 均衡器包括：非线性变换器，其根据预定阈值电平变换输入信号; 余弦变换滤波器，其反相非线性变换器的输出信号的高频分量的相位; 高增益滤波器，其增加输入信号的高频分量的振幅; 以及加法器，其将余弦变换滤波器的输出信号与高增压滤波器的输出信号相加。 因此，均衡器可以增加高密度光盘再现装置中的光盘的记录密度，从而通过减少信号间干扰（ISI）并增加输出信号中的信噪比来增加信息的记录量 的均衡器。 此外，均衡器具有简单的配置。

公开(公告)号：US07321531B2

公开(公告)日：2008-01-22

申请号：US10441087

申请日：2003-05-20

申请人： Hyun-soo Park ,  Jae-seong Shim

发明人： Hyun-soo Park ,  Jae-seong Shim

IPC分类号： G11B5/09

CPC分类号： G11B20/10009 ,  G11B7/005 ,  G11B20/10037 ,  G11B20/10046 ,  G11B20/10203 ,  G11B20/10296 ,  G11B20/10481 ,  G11B2007/0006 ,  G11B2020/10888 ,  G11B2020/1457

摘要： An apparatus includes a multiple detecting unit having n detectors, and a controller which selects one of the n detectors and controls the selected detector to output a binary signal. In the apparatus, a plurality of detectors are used to detect a signal read from an optical storage medium, and the optimum detector is selected in consideration of a quality of the signal and detection conditions, thereby increasing the efficiency of a signal reproduction. The apparatus can selectively compensate for disturbance of a signal where data from the optical storage medium is reproduced. The apparatus may control a run length of the signal to be 3T.

摘要翻译： 一种装置包括具有n个检测器的多重检测单元，以及选择n个检测器之一并控制所选检测器输出二进制信号的控制器。 在该装置中，使用多个检测器来检测从光存储介质读取的信号，并且考虑到信号的质量和检测条件来选择最佳检测器，从而提高信号再现的效率。 该装置可以选择性地补偿来自光存储介质的数据被再现的信号的干扰。 该装置可以控制信号的游程长度为3T。

公开(公告)号：US20060256670A1

公开(公告)日：2006-11-16

申请号：US11377192

申请日：2006-03-17

申请人： Hyun-soo Park ,  Jae-seong Shim

发明人： Hyun-soo Park ,  Jae-seong Shim

IPC分类号： G11B21/10

CPC分类号： G11B20/182 ,  G11B20/18

摘要： A signal-to-noise ratio measurement apparatus for a signal read from an optical disc comprises a storage unit for storing an input signal read from an optical disc; an index signal detection unit 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 for reading the repetition signals stored in the storage unit 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.

摘要翻译： 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; 索引信号检测单元，用于检测能够识别的重复信号的索引信号，所述重复表示在一定间隔中连续重复的输入信号; 以及计算单元，用于基于索引信号读取存储在存储单元中的重复信号，检测指示重复信号的平均值的原始信号，基于原始信号和原始信号之间的差值检测重复信号中包含的噪声 重复信号，并且基于原始信号和噪声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，从而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。

公开(公告)号：US06930619B2

公开(公告)日：2005-08-16

申请号：US09985162

申请日：2001-11-01

申请人： Jae-seong Shim ,  Jung-wan Ko ,  Ki-hyun Kim ,  Hyun-soo Park ,  Kyung-geun Lee

发明人： Jae-seong Shim ,  Jung-wan Ko ,  Ki-hyun Kim ,  Hyun-soo Park ,  Kyung-geun Lee

IPC分类号： G11B20/10 ,  G11B7/0045 ,  G11B7/007 ,  G11B20/12 ,  G11B20/14 ,  G11B20/18 ,  G11B27/30 ,  H03M7/14 ,  H04L1/00 ,  H04L7/04 ,  H03M7/00

CPC分类号： G11B20/1426 ,  G11B7/00745 ,  G11B20/1217 ,  G11B20/18 ,  G11B27/3027 ,  G11B2020/1434 ,  G11B2220/216 ,  G11B2220/218 ,  G11B2220/2562 ,  G11B2220/2575

摘要： A method of and an apparatus for modulating data to be resistant to channel distortion. A space extending encoder performs a first code transformation to extend a run length of digitized data to a predetermined length and outputs the space-extended data. A multiplexer multiplexes the space-extended data and data transformed by a predetermined second code transformation. A format converter converts the multiplexed data into a predetermined format which is suitable for writing to a recording medium. The apparatus and method enable recorded data to be resistant to channel distortion, enable the data to be recorded with increased recording density, and enable the data written to the recording medium to be reproduced with improved reliability.

摘要翻译： 一种用于调制数据以抵抗信道失真的方法和装置。 空间扩展编码器执行第一代码变换以将数字化数据的游程长度扩展到预定长度，并输出空间扩展数据。 复用器多路复用空间扩展数据和通过预定的第二代码变换变换的数据。 格式转换器将多路复用数据转换成适合于向记录介质写入的预定格式。 该装置和方法使得记录数据能够抵抗信道失真，从而能够以增加的记录密度来记录数据，并且能够以提高的可靠性使得写入记录介质的数据被再现。

公开(公告)号：US06859152B2

公开(公告)日：2005-02-22

申请号：US10787156

申请日：2004-02-27

申请人： Jae-seong Shim ,  Ki-hyun Kim ,  Hyun-soo Park ,  Kiu-hae Jung ,  Igbal Mahboob

发明人： Jae-seong Shim ,  Ki-hyun Kim ,  Hyun-soo Park ,  Kiu-hae Jung ,  Igbal Mahboob

IPC分类号： H04N5/92 ,  G11B20/10 ,  G11B20/14 ,  H03M5/14 ,  H03M7/14 ,  H03M7/46 ,  H03M5/00

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

摘要： A method of generating and allocating codewords includes allocating one of two selectable codewords b1 and b2 as codeword “b” when a preceding codeword “a” and a following codeword “b” form a code stream X, in which the codewords b1 and b2 have opposite INV values which are parameters indicating whether the number of ‘1s’ contained in a codeword is an odd number or an even number. When the code stream of the preceding codeword “a” and the following codeword b1 is X1, and when the code stream of the preceding codeword “a” and the following codeword b2 is X2, the codewords are allocated such that the INV values of X1 and X2 are maintained to be opposite when the preceding codeword “a” or the following codeword b1 (b2) (b1 or b2) should be replaced by another codeword in compliance with a predetermined boundary condition given between codewords. The codewords are allocated so that a DC suppression capability of the code stream can be maintained.

摘要翻译： 一种产生和分配码字的方法包括：当前一个码字“a”和随后的码字“b”形成码流X时，将两个可选码字b1和b2之一分配为码字“b”，其中码字b1和b2具有 相反的INV值，其是指示码字中包含的“1”的数目是奇数还是偶数的参数。 当前一个码字“a”的码流和随后的码字b1为X1时，当前一个码字“a”和随后的码字b2的码流为X2时，分配码字，使得X1的INV值 并且当前面的码字“a”或者随后的码字b1（b2）（b1或b2）应该被替换为符合在码字之间给定的预定边界条件的另一码字时，X2被维持为相反。 分配码字使得能够维持码流的DC抑制能力。