-
公开(公告)号：US20100284257A1
公开(公告)日：2010-11-11
申请号：US12608099
申请日：2009-10-29
IPC分类号： G11B20/18
CPC分类号： G11B20/10009 , G11B7/1267 , G11B20/10046 , G11B20/10055 , G11B20/1012 , G11B20/10212 , G11B20/10296 , G11B20/10481 , G11B20/1816 , G11B20/182 , G11B20/22 , G11B20/225 , G11B2220/2541 , H03M13/41
摘要： In a optical disc system with constraint length equal to or greater than 5, under assumption that continuous 2T count included in a predetermined evaluation bit array is denoted by i and that length of evaluation bit array of interest is given by (5+2i), judgment is passed on whether binary bit arrays include the evaluation bit array. Previously prepared are the error vectors calculated on the basis of target signals corresponding to the evaluation bit arrays and the target signals derived from the binary bit arrays, and the selection of a desired error vector is performed depending on the result of the judgment. At the same time, an equalized error vector is calculated from the target signal derived from the binary bit array and the reproduced signal, and the inner product of the equalized error vector and the selected error vector is calculated.
摘要翻译： 在具有等于或大于5的约束长度的光盘系统中，假定包括在预定评估位阵列中的连续2T计数由i表示，并且感兴趣的评估位阵列的长度由（5 + 2i）给出， 传递二进制位数组是否包含评估位数组的判断。 先前准备的是基于对应于评估比特列的目标信号和从二进制位阵列导出的目标信号计算的误差向量，并且根据判断结果执行期望误差向量的选择。 同时，根据从二进制位阵列和再现信号得到的目标信号计算均衡误差向量，并且计算均衡误差向量和所选误差向量的内积。
-
公开(公告)号：US08531932B2
公开(公告)日：2013-09-10
申请号：US12608099
申请日：2009-10-29
IPC分类号： G11B20/10
CPC分类号： G11B20/10009 , G11B7/1267 , G11B20/10046 , G11B20/10055 , G11B20/1012 , G11B20/10212 , G11B20/10296 , G11B20/10481 , G11B20/1816 , G11B20/182 , G11B20/22 , G11B20/225 , G11B2220/2541 , H03M13/41
摘要： In a optical disc system with constraint length equal to or greater than 5, under assumption that continuous 2T count included in a predetermined evaluation bit array is denoted by i and that length of evaluation bit array of interest is given by (5+2i), judgment is passed on whether binary bit arrays include the evaluation bit array. Previously prepared are the error vectors calculated on the basis of target signals corresponding to the evaluation bit arrays and the target signals derived from the binary bit arrays, and the selection of a desired error vector is performed depending on the result of the judgment. At the same time, an equalized error vector is calculated from the target signal derived from the binary bit array and the reproduced signal, and the inner product of the equalized error vector and the selected error vector is calculated.
摘要翻译： 在具有等于或大于5的约束长度的光盘系统中，假定包括在预定评估位阵列中的连续2T计数由i表示，并且感兴趣的评估位阵列的长度由（5 + 2i）给出， 传递二进制位数组是否包含评估位数组的判断。 先前准备的是基于对应于评估比特列的目标信号和从二进制位阵列导出的目标信号计算的误差向量，并且根据判断结果执行期望误差向量的选择。 同时，根据从二进制位阵列和再现信号得到的目标信号计算均衡误差向量，并且计算均衡误差向量和所选误差向量的内积。
-
公开(公告)号：US08289827B2
公开(公告)日：2012-10-16
申请号：US11974330
申请日：2007-10-12
IPC分类号： G11B15/52
CPC分类号： G11B7/1267 , G11B7/00456 , G11B7/00736
摘要： Recording parameters are decided so that the time control information on at least the front edge and the rear edge of a parameter forming a mark of twice size or above of the laser spot diameter focused on the recording medium is substantially proportional to the recording linear velocity. The mark is recorded and reproduced at a predetermined linear velocity to obtain an electric signal waveform having a time width Tm. A parameter is decided so as to control the laser pulse for recording information so that a voltage value change amount at two points at a distance Ts (Ts
摘要翻译： 决定记录参数，使得至少形成聚焦在记录介质上的激光光斑直径的二倍或更大的标记的参数的前边缘和后边缘的时间控制信息基本上与记录线速度成比例。 以预定的线速度记录和再现标记，以获得具有时间宽度Tm的电信号波形。 决定参数以控制用于记录信息的激光脉冲，使得在时间位置Tm / 2之前和之后的时间轴方向上的距离Ts（Ts
-
公开(公告)号：US07304931B2
公开(公告)日：2007-12-04
申请号：US10719285
申请日：2003-11-20
IPC分类号： G11B7/0045 , G11B20/10
CPC分类号： G11B7/1267 , G11B7/00456 , G11B7/00736
摘要： Recording parameters are decided so that the time control information on at least the front edge and the rear edge of a parameter forming a mark of twice size or above of the laser spot diameter focused on the recording medium is substantially proportional to the recording linear velocity. The mark is recorded and reproduced at a predetermined linear velocity to obtain an electric signal waveform having a time width Tm. A parameter is decided so as to control the laser pulse for recording information so that a voltage value change amount at two points at a distance Ts (Ts
摘要翻译： 决定记录参数，使得至少形成聚焦在记录介质上的激光光斑直径的二倍或更大的标记的参数的前边缘和后边缘的时间控制信息基本上与记录线速度成比例。 以预定的线速度记录和再现标记，以获得具有时间宽度Tm的电信号波形。 决定参数以控制用于记录信息的激光脉冲，使得在时间位置Tm / 2之前和之后的时间轴方向上的距离Ts（Ts
-
公开(公告)号：US20060233070A1
公开(公告)日：2006-10-19
申请号：US11194599
申请日：2005-08-02
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G11B7/0053 , G11B7/0943 , G11B7/24079
摘要： The amount of focus offset and the amount of spherical aberration correction are adjusted with respect to a disk on which no data is recorded with high precision. The amount of focus offset and the amount of spherical aberration correction are adjusted on the basis of (1) a focus error signal amplitude, (2) a tracking error signal amplitude in a wide track pitch region, and (3) a rectangular waveform wobble signal envelop level.
-
公开(公告)号：US20080037395A1
公开(公告)日：2008-02-14
申请号：US11974330
申请日：2007-10-12
IPC分类号： G11B5/00
CPC分类号： G11B7/1267 , G11B7/00456 , G11B7/00736
摘要： Recording parameters are decided so that the time control information on at least the front edge and the rear edge of a parameter forming a mark of twice size or above of the laser spot diameter focused on the recording medium is substantially proportional to the recording linear velocity. The mark is recorded and reproduced at a predetermined linear velocity to obtain an electric signal waveform having a time width Tm. A parameter is decided so as to control the laser pulse for recording information so that a voltage value change amount at two points at a distance Ts (Ts
摘要翻译： 决定记录参数，使得至少形成聚焦在记录介质上的激光光斑直径的二倍或更大的标记的参数的前边缘和后边缘的时间控制信息基本上与记录线速度成比例。 以预定的线速度记录和再现标记，以获得具有时间宽度Tm的电信号波形。 决定参数以控制用于记录信息的激光脉冲，使得在时间位置Tm / 2之前和之后的时间轴方向上的距离Ts（Ts
-
7.发明授权Method and apparatus for determining the reading power of an optical reproducing device 失效用于确定光学再现装置的读取功率的方法和装置公开(公告)号：US08121014B2
公开(公告)日：2012-02-21
申请号：US11675699
申请日：2007-02-16
IPC分类号： G11B7/00
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/1263
摘要： Since the conventional optical disk recording/reproducing apparatus cannot correctly measure a power of a main beam that is a part of the laser light outputted from an objective lens and is focused on a recording layer to contribute to recording/reproducing, it is difficult to accurately control a read power. A ratio of a proper read power to a threshold power of erasing is acquired beforehand. The read power is determined by measuring the threshold power of erasing and multiplying it by the ratio when learning of the read power is performed for each drive device. According to the read power learning method of this invention, it becomes possible to determine the proper read power regardless of performance variance of an optical pickup and sensitivity dispersion of a medium.
摘要翻译： 由于传统的光盘记录/再现装置不能正确地测量作为从物镜输出的激光的一部分并且聚焦在记录层上以有助于记录/再现的主光束的功率，所以难以准确地 控制读取电源。 预先获取适当的读取功率与阈值的擦除功率的比率。 读取功率通过测量擦除阈值功率并将其乘以当对每个驱动装置执行读取功率的学习时的比率来确定。 根据本发明的读取功率学习方法，无论光学拾取器的性能方差和介质的灵敏度分散如何，都可以确定适当的读取功率。
-
公开(公告)号：US08107339B2
公开(公告)日：2012-01-31
申请号：US12568977
申请日：2009-09-29
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10055 , G11B20/1012 , G11B20/10212 , G11B20/10296 , G11B20/1816 , G11B20/182 , G11B2220/2541 , H03M13/39 , H03M13/6343
摘要： A highly efficient and reliable reproduced signal evaluation method and an optical disc drive using that method in which assuming that the number of 2T's appearing successively in a predetermined evaluation bitstream is i, the evaluation bitstream is divided into a main bitstream (5+2i) long and sub bitstreams at the ends of the main bitstream. The check process to determine whether a predetermined evaluation bitstream is included in the binarized bitstreams is replaced with a main bitstream agreement check. This can prevent an increase in the circuit size. At the same time, by separately summing up for each main bitstream the calculated results of Euclidean distance between the reproduced signal and the target signal corresponding to the evaluation bitstream, the size of an evaluation summing circuit can be reduced.
-
公开(公告)号：US20120002526A1
公开(公告)日：2012-01-05
申请号：US13210429
申请日：2011-08-16
IPC分类号： G11B27/36
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10055 , G11B20/1012 , G11B20/10212 , G11B20/10296 , G11B20/1816 , G11B20/182 , G11B2220/2541 , H03M13/39 , H03M13/6343
摘要： A highly efficient and reliable reproduced signal evaluation method and an optical disc drive using that method in which assuming that the number of 2T's appearing successively in a predetermined evaluation bitstream is i, the evaluation bitstream is divided into a main bitstream (5+2i) long and sub bitstreams at the ends of the main bitstream. The check process to determine whether a predetermined evaluation bitstream is included in the binarized bitstreams is replaced with a main bitstream agreement check. This can prevent an increase in the circuit size. At the same time, by separately summing up for each main bitstream the calculated results of Euclidean distance between the reproduced signal and the target signal corresponding to the evaluation bitstream, the size of an evaluation summing circuit can be reduced.
摘要翻译： 使用该方法的高效可靠的再现信号评估方法和光盘驱动器，其中假定在预定评估比特流中连续出现的2T的数量为i，则将评估比特流分成主比特流（5 + 2i）长 以及在主比特流的末端的子比特流。 用于确定在二进制化比特流中是否包括预定评估比特流的检查处理被主比特列协议检查替换。 这可以防止电路尺寸的增加。 同时，通过对每个主比特流单独地求和再现信号与对应于评估比特流的目标信号之间的欧氏距离的计算结果，可以减小评估求和电路的大小。
-
公开(公告)号：US08085641B2
公开(公告)日：2011-12-27
申请号：US12836743
申请日：2010-07-15
申请人： Hiroyuki Minemura , Takahiro Kurokawa , Junya Shiraishi , Shoei Kobayashi , Harumitsu Miyashita , Yasumori Hino
发明人： Hiroyuki Minemura , Takahiro Kurokawa , Junya Shiraishi , Shoei Kobayashi , Harumitsu Miyashita , Yasumori Hino
IPC分类号： G11B7/00
CPC分类号： G11B20/10009 , G11B7/00456 , G11B7/00458 , G11B20/10046 , G11B20/1012 , G11B20/10481 , G11B2007/0013 , G11B2220/2541
摘要： The present invention aims to provide a reproduced signal evaluation method and a write adjustment method for offering a Blu-ray disc having a large storage capacity with excellent media compatibility. An evaluation index L-SEAT is calculated through signed addition using a Euclidean distance difference calculated from at least one of target signals in which a focused edge is shifted to the right and left, and the quality of the reproduced signal is evaluated based on the evaluation index. Write condition adjustment using the index enables write adjustment not depending on SNR and achieving high adjustment accuracy.
摘要翻译： 本发明的目的在于提供一种用于提供具有良好的媒体兼容性的具有大存储容量的蓝光盘的再现信号评估方法和写入调整方法。 通过使用从聚焦边缘向左右移动的目标信号中的至少一个计算出的欧几里德距离差，通过带符号相加来计算评价指标L-SEAT，并且基于评估来评估再现信号的质量 指数。 使用该索引的写入条件调整可以使写入调整不依赖于SNR并实现高调整精度。
-
-
-
-
-
-
-
-
-
搜索结果
319 条记录 (耗时 0.032 秒)
