公开(公告)号：US20100027398A1

公开(公告)日：2010-02-04

申请号：US12519938

申请日：2007-12-20

申请人： Takahiro Ichikura ,  Hideo Sakon ,  Yorikazu Takao ,  Daigo Senoo ,  Youichi Ogura

发明人： Takahiro Ichikura ,  Hideo Sakon ,  Yorikazu Takao ,  Daigo Senoo ,  Youichi Ogura

IPC分类号： G11B7/00

CPC分类号： G11B7/00458 ,  G11B7/00454 ,  G11B7/0053 ,  G11B20/10009 ,  G11B20/10222 ,  G11B20/1403 ,  G11B2020/1274 ,  G11B2020/1287 ,  G11B2220/215 ,  G11B2220/2562

摘要： There is provided an optical disc device which can evaluate in a short time as to whether an optical disc is recorded with satisfying the standard or not.An optical disc device for measuring a recording deviation amount of data recorded on an optical disc on which physical addresses are previously provided, includes an address detection circuit which detects the physical address and outputs a physical address detection signal, a timer which is operated in synchronization with reproduced data from the optical disc, a recording deviation amount measurement circuit which measures the recording deviation amount of data recorded on the optical disc by using the physical address detection signal and the count value of the timer, a memory which stores the measured recording deviation amount, and a data transfer circuit which transfers the recording deviation amount to the memory.

摘要翻译： 提供了一种能够在短时间内评估光盘是否满足标准的光盘的光盘装置。 用于测量记录在预先提供了物理地址的光盘上的数据的记录偏差量的光盘装置包括检测物理地址并输出物理地址检测信号的地址检测电路，同步操作的定时器 来自光盘的再现数据，记录偏差量测量电路，其通过使用物理地址检测信号和计时器的计数值来测量记录在光盘上的数据的记录偏差量;存储器，其存储测量的记录偏差 以及将记录偏差量传送到存储器的数据传送电路。

公开(公告)号：US20090257334A1

公开(公告)日：2009-10-15

申请号：US11995634

申请日：2006-07-20

申请人： Youichi Ogura ,  Tatsushi Hiraki ,  Yorikazu Takao

发明人： Youichi Ogura ,  Tatsushi Hiraki ,  Yorikazu Takao

IPC分类号： G11B27/30 ,  H03M1/12

CPC分类号： G11B20/10009 ,  G11B20/10046 ,  G11B20/10055 ,  G11B20/10083 ,  G11B20/10101 ,  G11B20/10111 ,  G11B20/10222 ,  G11B20/1403 ,  G11B2020/1287 ,  G11B2220/2562 ,  G11B2220/2575

摘要： A digital signal reproducing apparatus includes an analog to digital converter for sampling and quantizing a signal read from an optical recording medium in accordance with a reproduced clock having a frequency which is one-half of a channel bit frequency and outputting an obtained digital RF signal, an offset compensation circuit for reducing an offset component in an amplitude direction from the digital RF signal, and a simplified interpolation filter for reconstructing a signal indicating a predetermined pattern recorded in the optical recording medium from the output signal of the offset compensation circuit and outputting the reconstructed signal. A control operation is performed to reduce the magnitudes of respective values shown by first phase error information on a section with the predetermined pattern and by second phase error information on a section other than the section with the predetermined pattern.

摘要翻译： 一种数字信号再生装置，具有模拟数字转换器，用于根据具有频率为通道位频率的二分之一的频率的再生时钟对从光记录介质读取的信号进行采样和量化，并输出所获得的数字RF信号， 偏移补偿电路，用于减少来自数字RF信号的振幅方向上的偏移分量;以及简化内插滤波器，用于根据偏移补偿电路的输出信号重建指示记录在光学记录介质中的预定模式的信号，并输出 重建信号。 执行控制操作以减小具有预定模式的部分上的第一相位误差信息所示的各个值的大小以及除了具有预定模式的部分之外的部分的第二相位误差信息。

公开(公告)号：US08411544B2

公开(公告)日：2013-04-02

申请号：US13251874

申请日：2011-10-03

申请人： Youichi Ogura ,  Noriyuki Masunari ,  Yorikazu Takao

发明人： Youichi Ogura ,  Noriyuki Masunari ,  Yorikazu Takao

IPC分类号： G11B7/00

CPC分类号： G11B20/10212

摘要： An instantaneous jitter information detection section detects, based on first and second digital values indicating different polarities relative to a predetermined reference value, an instantaneous gradient value corresponding to a difference value between the first and second digital values, and an instantaneous deviation value corresponding to a difference value between an intermediate value between the first and second digital values and the reference value. An information conversion section converts, based on an inversely proportional conversion table, the instantaneous gradient value to an inversely proportional value. An arithmetic section detects an instantaneous variance value by multiplying the instantaneous deviation value and the inversely proportional value together, and squaring a value obtained by the multiplication, and detects an integrated value by accumulating the instantaneous variance value. A standard deviation detection section detects a square root of a mean value of the integrated value as the absolute jitter value.

摘要翻译： 瞬时抖动信息检测部分根据相对于预定参考值指示不同极性的第一和第二数字值检测对应于第一和第二数字值之间的差值的瞬时梯度值和对应于 第一和第二数字值之间的中间值与参考值之间的差值。 信息转换部分将基于逆比例转换表将瞬时梯度值转换为反比例值。 算术部分通过将瞬时偏差值和反比例值相乘并检测通过乘法获得的值的平方来检测瞬时方差值，并且通过累加瞬时方差值来检测积分值。 标准差检测部检测积分值的平均值的平方根作为绝对抖动值。

公开(公告)号：US20120026850A1

公开(公告)日：2012-02-02

申请号：US13251874

申请日：2011-10-03

申请人： Youichi Ogura ,  Noriyuki Masunari ,  Yorikazu Takao

发明人： Youichi Ogura ,  Noriyuki Masunari ,  Yorikazu Takao

IPC分类号： G11B20/18

CPC分类号： G11B20/10212

摘要： An instantaneous jitter information detection section detects, based on first and second digital values indicating different polarities relative to a predetermined reference value, an instantaneous gradient value corresponding to a difference value between the first and second digital values, and an instantaneous deviation value corresponding to a difference value between an intermediate value between the first and second digital values and the reference value. An information conversion section converts, based on an inversely proportional conversion table, the instantaneous gradient value to an inversely proportional value. An arithmetic section detects an instantaneous variance value by multiplying the instantaneous deviation value and the inversely proportional value together, and squaring a value obtained by the multiplication, and detects an integrated value by accumulating the instantaneous variance value. A standard deviation detection section detects a square root of a mean value of the integrated value as the absolute jitter value.

摘要翻译： 瞬时抖动信息检测部分根据相对于预定参考值指示不同极性的第一和第二数字值检测对应于第一和第二数字值之间的差值的瞬时梯度值和对应于 第一和第二数字值之间的中间值与参考值之间的差值。 信息转换部分将基于逆比例转换表将瞬时梯度值转换为反比例值。 算术部分通过将瞬时偏差值和反比例值相乘并检测通过乘法获得的值的平方来检测瞬时方差值，并且通过累加瞬时方差值来检测积分值。 标准差检测部检测积分值的平均值的平方根作为绝对抖动值。

公开(公告)号：US07852728B2

公开(公告)日：2010-12-14

申请号：US11995634

申请日：2006-07-20

申请人： Youichi Ogura ,  Tatsushi Hiraki ,  Yorikazu Takao

发明人： Youichi Ogura ,  Tatsushi Hiraki ,  Yorikazu Takao

IPC分类号： G11B7/00

CPC分类号： G11B20/10009 ,  G11B20/10046 ,  G11B20/10055 ,  G11B20/10083 ,  G11B20/10101 ,  G11B20/10111 ,  G11B20/10222 ,  G11B20/1403 ,  G11B2020/1287 ,  G11B2220/2562 ,  G11B2220/2575

摘要： A digital signal reproducing apparatus includes an analog to digital converter for sampling and quantizing a signal read from an optical recording medium in accordance with a reproduced clock having a frequency which is one-half of a channel bit frequency and outputting an obtained digital RF signal, an offset compensation circuit for reducing an offset component in an amplitude direction from the digital RF signal, and a simplified interpolation filter for reconstructing a signal indicating a predetermined pattern recorded in the optical recording medium from the output signal of the offset compensation circuit and outputting the reconstructed signal. A control operation is performed to reduce the magnitudes of respective values shown by first phase error information on a section with the predetermined pattern and by second phase error information on a section other than the section with the predetermined pattern.

摘要翻译： 一种数字信号再生装置，具有模拟数字转换器，用于根据具有频率为通道位频率的二分之一的频率的再生时钟对从光记录介质读取的信号进行采样和量化，并输出所获得的数字RF信号， 偏移补偿电路，用于减少来自数字RF信号的振幅方向上的偏移分量;以及简化内插滤波器，用于根据偏移补偿电路的输出信号重建指示记录在光学记录介质中的预定模式的信号，并输出 重建信号。 执行控制操作以减小具有预定模式的部分上的第一相位误差信息所示的各个值的大小以及除了具有预定模式的部分之外的部分的第二相位误差信息。

公开(公告)号：US20070109933A1

公开(公告)日：2007-05-17

申请号：US10583372

申请日：2004-12-10

申请人： Yorikazu Takao ,  Tatsushi Hiraki

发明人： Yorikazu Takao ,  Tatsushi Hiraki

IPC分类号： G11B19/00

CPC分类号： G11B20/10 ,  G11B20/10009 ,  G11B27/24 ,  G11B2220/216

摘要： In the prior art recording position deviation correction apparatus, it was difficult to obtain the physical address position during performing an additional recording processing. So, a high reliability recording position deviation amount cannot be calculated, and the recording position deviation correction cannot be carried out correctly. The present invention adopts, as a calculating method for calculating the recording position deviation amount in the additional recording processing, one among (1) to perform an interpolation processing on the basis of the physical address position before performing an additional recording processing thereby to detect the physical address during performing the additional recording processing, and calculates the positional deviation amount using the detected physical address position, (2) to calculate the recording position deviation amount on the basis of the position deviation amount before performing the additional recording processing, and (3) to obtain the physical address position in a stationary state by making the laser power to be irradiated constant when obtaining the physical address in the recording processing, and calculate the recording position deviation amount using the obtained physical address position, and thereby realizes a high reliability recording position deviation correction.

摘要翻译： 在现有技术的记录位置偏差校正装置中，在执行附加记录处理期间难以获得物理地址位置。 因此，不能计算高可靠性记录位置偏差量，并且不能正确地执行记录位置偏差校正。 本发明作为用于计算附加记录处理中的记录位置偏差量的计算方法，在（1）中，在执行附加记录处理之前，根据物理地址位置执行插值处理之一，从而检测 在执行附加记录处理期间的物理地址，并且使用检测到的物理地址位置来计算位置偏差量，（2）基于在执行附加记录处理之前的位置偏差量来计算记录位置偏差量，以及（3 ）通过在获取记录处理中的物理地址时使激光功率恒定来获得静止状态的物理地址位置，并且使用获得的物理地址位置计算记录位置偏差量，从而实现高可靠性 记录位置偏差 修正。

公开(公告)号：US20070047926A1

公开(公告)日：2007-03-01

申请号：US11512266

申请日：2006-08-30

申请人： Katsumi Morita ,  Masaharu Imura ,  Yoichi Ogura ,  Tsutomu Kai ,  Shinichi Konishi ,  Yorikazu Takao

发明人： Katsumi Morita ,  Masaharu Imura ,  Yoichi Ogura ,  Tsutomu Kai ,  Shinichi Konishi ,  Yorikazu Takao

IPC分类号： H04N5/00

CPC分类号： H04N17/06 ,  G11B7/005 ,  G11B19/04 ,  G11B20/1816

摘要： The present invention provides a signal processing device for optical discs that is capable of more accurately check signal quality at a higher speed than the conventional technique, even if a playback RF signal is deteriorated. A short recording mark detecting unit 115 detects short recording marks in an RF signal read from an optical disc 101, the short recording mark counting unit 116 counts a first short recording mark number as the number of the detected short recording marks, an error number counting unit 110 counts errors in the RF signal, an error number converting unit 111 converts the number of the errors to a second short recording mark number equivalent to the number of the errors, and a signal quality judging unit 112 judges recording quality based on a total of the first and second short recording mark numbers.

摘要翻译： 本发明提供了一种用于光盘的信号处理装置，即使重放RF信号恶化，其能够以比常规技术更高的速度更准确地检查信号质量。 短记录标记检测单元115检测从光盘101读取的RF信号中的短记录标记，短记录标记计数单元116计数作为检测到的短记录标记的数量的第一短记录标记数，错误数计数 单元110对RF信号中的错误进行计数，错误数转换单元111将错误数转换为与错误数相当的第二短记录标记数，信号质量判断单元112基于总数判断记录质量 的第一和第二短记录号码。