公开(公告)号：US20070263505A1

公开(公告)日：2007-11-15

申请号：US11741267

申请日：2007-04-27

申请人： Mariko FUKUYAMA ,  Tadaaki NOMOTO

发明人： Mariko FUKUYAMA ,  Tadaaki NOMOTO

IPC分类号： G11B20/00

CPC分类号： G11B27/24 ,  G11B20/10 ,  G11B20/14

摘要： A demodulator for demodulating an input signal including a predetermined modulated signal includes a multiplication fundamental wave generator for outputting a multiplication fundamental wave for the predetermined modulated signal, a calculator for multiplying the multiplication fundamental wave by the input signal and for integrating the multiplication result, a demodulated signal generator for generating a demodulated signal of the modulated signal using the output from the calculator, a phase determiner for determining a cross-phase state of the input signal and the multiplication fundamental wave on the basis of a balance of levels of a plurality of integrated values, obtained as the integration result, for an interval containing the modulated signal in the input signal, and a phase adjuster for adjusting a phase of the multiplication fundamental wave to be supplied to the calculator on the basis of the determination result of the phase determiner.

摘要翻译： 用于解调包括预定调制信号的输入信号的解调器包括用于输出用于预定调制信号的乘法基波的乘法基波发生器，用于将乘法基本波乘以输入信号并用于积分乘法结果的计算器， 解调信号发生器，用于使用来自所述计算器的输出来产生所述调制信号的解调信号;相位确定器，用于基于所述多个信号的电平的平衡来确定所述输入信号和所述乘法基波的交叉相位状态; 作为积分结果获得的积分值用于包含输入信号中的调制信号的间隔，以及相位调整器，用于根据相位的确定结果调整要提供给计算器的乘法基波的相位 决定者

公开(公告)号：US06597295B1

公开(公告)日：2003-07-22

申请号：US09695209

申请日：2000-10-24

申请人： Mariko Fukuyama

发明人： Mariko Fukuyama

IPC分类号： H03M500

CPC分类号： G11B20/10203 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/10212 ,  G11B20/10296 ,  G11B20/1426 ,  G11B20/18 ,  G11B20/1803 ,  H03M5/145 ,  H03M7/46 ,  H03M13/41

摘要： A data-decoding apparatus having bit-detecting section 4. In the apparatus, an RF signal is reproduced from a recording medium and converted to digital data. If the RF signal has a level (amplitude) equal to a comparator level, the bit-detecting section 4 outputs channel-bit data having logic level “0” or “1” in accordance with whether the sum of the amplitudes of the two RF signals respectively preceding and following that RF signal is higher or lower than the comparator level.

摘要翻译： 具有位检测部分4的数据解码装置。在该装置中，从记录介质再现RF信号并转换成数字数据。 如果RF信号具有等于比较器电平的电平（幅度），则位检测部分4根据两个RF的幅度的和来输出具有逻辑电平“0”或“1”的通道位数据 分别在RF信号之前和之后的信号高于或低于比较器电平。

公开(公告)号：US07706222B2

公开(公告)日：2010-04-27

申请号：US11741267

申请日：2007-04-27

申请人： Mariko Fukuyama ,  Tadaaki Nomoto

发明人： Mariko Fukuyama ,  Tadaaki Nomoto

IPC分类号： G11B20/10

CPC分类号： G11B27/24 ,  G11B20/10 ,  G11B20/14

摘要： A demodulator for demodulating an input signal including a predetermined modulated signal includes a multiplication fundamental wave generator for outputting a multiplication fundamental wave for the predetermined modulated signal, a calculator for multiplying the multiplication fundamental wave by the input signal and for integrating the multiplication result, a demodulated signal generator for generating a demodulated signal of the modulated signal using the output from the calculator, a phase determiner for determining a cross-phase state of the input signal and the multiplication fundamental wave on the basis of a balance of levels of a plurality of integrated values, obtained as the integration result, for an interval containing the modulated signal in the input signal, and a phase adjuster for adjusting a phase of the multiplication fundamental wave to be supplied to the calculator on the basis of the determination result of the phase determiner.

摘要翻译： 用于解调包括预定调制信号的输入信号的解调器包括用于输出用于预定调制信号的乘法基波的乘法基波发生器，用于将乘法基本波乘以输入信号并用于积分乘法结果的计算器， 解调信号发生器，用于使用来自所述计算器的输出来产生所述调制信号的解调信号;相位确定器，用于基于所述多个信号的电平的平衡来确定所述输入信号和所述乘法基波的交叉相位状态; 作为积分结果获得的积分值用于包含输入信号中的调制信号的间隔，以及相位调整器，用于根据相位的确定结果调整要提供给计算器的乘法基波的相位 决定者

公开(公告)号：US06918127B2

公开(公告)日：2005-07-12

申请号：US10111805

申请日：2001-08-23

申请人： Shinichi Maeda ,  Hidehiko Ota ,  Hirofumi Furukawa ,  Mariko Fukuyama, by

发明人： Michio Fukuyama

IPC分类号： G11B17/051 ,  G11B17/04 ,  G11B33/02

CPC分类号： G11B17/0515 ,  G11B17/0404

摘要： A disk loading apparatus may include a first retaining device that is arranged in a slot for a disk to be inserted and thereby retains the outer edge of the disk so as to permit it to pass through the slot. A transferring device transfers the disk retained by the first retaining device to a predetermined position. A second retaining device is arranged in the interior from the slot and thereby retains the outer edge of the disk retained by the first retaining device and transferred by the transferring device. A rotating device rotates the disk at the predetermined position. Also, each of the first and second retaining devices has a contact section for contacting with the outer edge, upper surface, and lower surface of the disk in a slidable manner.

摘要翻译： 盘装载装置可以包括第一保持装置，该第一保持装置布置在用于待插入的盘的槽中，从而保持盘的外边缘以允许其通过槽。 传送装置将由第一保持装置保持的盘传送到预定位置。 第二保持装置从槽中布置在内部，从而保持由第一保持装置保持的盘的外边缘并由转印装置传送。 旋转装置使盘在预定位置旋转。 此外，第一和第二保持装置中的每一个具有用于以可滑动的方式与盘的外边缘，上表面和下表面接触的接触部分。

公开(公告)号：US20070109939A1

公开(公告)日：2007-05-17

申请号：US11592482

申请日：2006-11-03

申请人： Toshiki Shimizu ,  Jumpei Kura ,  Mariko Fukuyama

发明人： Toshiki Shimizu ,  Jumpei Kura ,  Mariko Fukuyama

IPC分类号： G11B20/10

CPC分类号： G11B20/1816 ,  G11B20/10009 ,  G11B2020/1863 ,  H03M13/3738 ,  H03M13/41 ,  H03M13/6331 ,  H03M13/6343

摘要： An evaluation value calculating apparatus includes the following elements. A difference metric selecting unit selects a difference metric for a specific recorded sequence in recorded sequences obtained in a maximum likelihood decoding process when information expressed with marks and spaces on a recording medium is played back, the difference metric being obtained in the maximum likelihood decoding process. A difference metric error value calculating unit determines a difference metric error value for the selected difference metric using a calculation method that is selected according to an edge shift direction of each of the marks on a time axis, the difference metric error value representing an error from an ideal difference metric and the edge shift direction on the time axis. A statistical processing unit performs statistical processing on the determined difference metric error value on the basis of each of states of path meeting points to generate an evaluation value.

摘要翻译： 评价值计算装置包括以下要素。 当在最大似然解码处理中获得的信息被记录在记录介质上的标记和空格的信息被重放时，差分度量选择单元选择在特定记录序列中的差值度量，在最大似然解码处理中获得的差分度量 。 差分度量误差值计算单元使用根据时间轴上的每个标记的边沿移位方向选择的计算方法来确定所选差分度量的差分度量误差值，差值度量误差值表示来自 理想差值度量和时间轴上的边沿移位方向。 统计处理单元基于路径会合点的状态的每一个对所确定的差分度量误差值执行统计处理，以生成评估值。

公开(公告)号：US07835245B2

公开(公告)日：2010-11-16

申请号：US11592482

申请日：2006-11-03

申请人： Toshiki Shimizu ,  Jumpei Kura ,  Mariko Fukuyama

发明人： Toshiki Shimizu ,  Jumpei Kura ,  Mariko Fukuyama

IPC分类号： G11B20/10

CPC分类号： G11B20/1816 ,  G11B20/10009 ,  G11B2020/1863 ,  H03M13/3738 ,  H03M13/41 ,  H03M13/6331 ,  H03M13/6343

摘要： An evaluation value calculating apparatus includes the following elements. A difference metric selecting unit selects a difference metric for a specific recorded sequence in recorded sequences obtained in a maximum likelihood decoding process when information expressed with marks and spaces on a recording medium is played back, the difference metric being obtained in the maximum likelihood decoding process. A difference metric error value calculating unit determines a difference metric error value for the selected difference metric using a calculation method that is selected according to an edge shift direction of each of the marks on a time axis, the difference metric error value representing an error from an ideal difference metric and the edge shift direction on the time axis. A statistical processing unit performs statistical processing on the determined difference metric error value on the basis of each of states of path meeting points to generate an evaluation value.

摘要翻译： 评价值计算装置包括以下要素。 当在最大似然解码处理中获得的信息被记录在记录介质上的标记和空格的信息被重放时，差分度量选择单元选择在特定记录序列中的差值度量，在最大似然解码处理中获得的差分度量 。 差分度量误差值计算单元使用根据时间轴上的每个标记的边沿移位方向选择的计算方法来确定所选差分度量的差分度量误差值，差值度量误差值表示来自 理想差值度量和时间轴上的边沿移位方向。 统计处理单元基于路径会合点的状态的每一个对所确定的差分度量误差值执行统计处理，以生成评估值。