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114 条记录 (耗时 0.025 秒)

    Clock-data recovery and method for binary signaling using low resolution ADC
    1.
    发明授权
    Clock-data recovery and method for binary signaling using low resolution ADC 有权
    使用低分辨率ADC的二进制信号的时钟数据恢复和方法

    公开(公告)号：US08451949B2

    公开(公告)日：2013-05-28

    申请号：US12574506

    申请日：2009-10-06

    申请人： Chia-Liang Lin

    发明人： Chia-Liang Lin

    IPC分类号： H04L27/00 ,  H04L27/06

    CPC分类号： H04L27/063 ,  G11B20/10009 ,  G11B20/10027 ,  G11B20/10037 ,  G11B20/10046 ,  G11B20/10222 ,  G11B20/14 ,  G11B20/1496 ,  H03L7/091 ,  H04L7/0062 ,  H04L7/033

    摘要： A binary signal detection based on low resolution ADC includes: a variable-gain amplifier for amplifying an input signal with a gain factor controlled by a gain setting to generate an amplified signal; an ADC for converting the amplified signal into a converter output in accordance with a timing provided by a recovered clock, wherein the converter output has N levels; a timing detection circuit for generating a timing error signal based on the converter output; a filter for filtering the timing error signal to generate a control signal; a controllable oscillator for generating the recovered clock under a control of the control voltage; an automatic gain control for processing the converter data to set the gain setting to control the gain factor; and a data recovery circuit for generate a recovered data based on the converter output.

    摘要翻译： 基于低分辨率ADC的二进制信号检测包括：可变增益放大器，用于通过由增益设置控制的增益因子放大输入信号以产生放大信号; ADC，用于根据恢复的时钟提供的定时将放大的信号转换成转换器输出，其中转换器输出具有N个电平; 定时检测电路，用于基于所述转换器输出产生定时误差信号; 用于对定时误差信号进行滤波以产生控制信号的滤波器; 可控振荡器，用于在控制电压的控制下产生恢复时钟; 用于处理转换器数据以设置增益设置以控制增益因子的自动增益控制; 以及数据恢复电路，用于基于转换器输出生成恢复的数据。

    Method and apparatus for embedding second code into optical disc data by data modulation rule variation
    3.
    发明授权
    Method and apparatus for embedding second code into optical disc data by data modulation rule variation 有权
    通过数据调制规则变化将第二代码嵌入光盘数据的方法和装置

    公开(公告)号：US07928865B2

    公开(公告)日：2011-04-19

    申请号：US12308281

    申请日：2006-06-12

    申请人： Holger Hofmann ,  Alan Bruce Hamersley ,  John Matthew Town

    发明人： Holger Hofmann ,  Alan Bruce Hamersley ,  John Matthew Town

    IPC分类号： H03M5/00

    CPC分类号： G11B20/1496 ,  G11B7/24088 ,  G11B20/00086 ,  G11B20/00579 ,  G11B20/00688 ,  G11B20/00884 ,  G11B20/1426 ,  G11B2020/1267 ,  G11B2020/1287 ,  G11B2020/1457 ,  G11B2020/1465 ,  G11B2220/2562

    摘要： There are provided a method and apparatus for embedding a second level code into a first level code of an optical disc by data modulation rule variation. The apparatus includes a multi-level, varying rule based modulator (199) for modulating the first level code to obtain a channel bit stream representative of the first level code and having the second level code embedded therein. The multi-level, varying rule based modulator modulates the first level code using modulation rules respectively having different statistical properties of pit-land length distributions that preserve a readability of the first level code and that are distinguishable at readout of the optical disc. The different statistical properties represent binary or multilevel data of the second level code.

    摘要翻译： 提供了一种通过数据调制规则变化将第二级代码嵌入到光盘的第一级代码中的方法和装置。 该装置包括用于调制第一级代码以获得代表第一级代码并且嵌入其中的第二级代码的通道位流的多级变化规则调制器（199）。 基于多级变化规则的调制器使用调制规则调制第一级代码，该调制规则分别具有不同的凹坑间距长度分布的统计特性，这保持了第一级代码的可读性，并且在读出光盘时是可区分的。 不同的统计属性表示第二级代码的二进制或多级数据。

    Multi-level information reproducing method
    4.
    发明授权
    Multi-level information reproducing method 失效
    多级信息再现方法

    公开(公告)号：US07573798B2

    公开(公告)日：2009-08-11

    申请号：US11435895

    申请日：2006-05-18

    申请人： Masakuni Yamamoto ,  Yasuyuki Miyaoka

    发明人： Masakuni Yamamoto ,  Yasuyuki Miyaoka

    IPC分类号： G11B5/09

    CPC分类号： G11B7/005 ,  G11B7/24088 ,  G11B20/1496

    摘要： A multi-level information reproducing method is provided which can increase the degree of separation between distributions of cell boundary values to thereby improve the accuracy of reproduction. Specifically, in a method of reproducing multi-level information recorded on a track of an optical information recording medium by virtually providing cells at equal intervals and by varying a width of an information pit in a track direction or an area of an information pit, a cell boundary value (a value obtained by sampling a reproduced signal when a center of a light spot is located at a boundary of cells) is corrected based on cell center values of two cells adjacent to the boundary (a value obtained by sampling a reproduced signal when the center of the light spot is located at a center of a cell), and the multi-level information is reproduced based on the corrected cell boundary value.

    摘要翻译： 提供了可以增加单元边界值分布之间的分离程度从而提高再现精度的多级信息再现方法。 具体地，在通过以相等的间隔虚拟地提供单元并且通过改变信息凹坑的轨道方向或信息凹坑的区域的宽度来再现记录在光学信息记录介质的轨道上的多级信息的方法中， 基于与边界相邻的两个单元的单元格中心值（通过对再现信号进行取样而得到的值）来校正单元格边界值（通过对光点的中心位于单元的边界时对再现信号进行采样而获得的值） 当光点的中心位于单元的中心时），并且基于校正的单元边界值再现多级信息。

    Method of generating an efficient sequence of multi-level random numbers used for an information recording medium
    5.
    发明授权
    Method of generating an efficient sequence of multi-level random numbers used for an information recording medium 失效
    产生用于信息记录介质的多级随机数的有效序列的方法

    公开(公告)号：US07197000B2

    公开(公告)日：2007-03-27

    申请号：US10379586

    申请日：2003-03-06

    申请人： Koubun Sakagami

    发明人： Koubun Sakagami

    IPC分类号： G11B7/24

    CPC分类号： G06F7/582 ,  G11B20/1496

    摘要： A method of generating an efficient sequence of “nm+m−1” level random numbers, each sub-sequence of “m” successive random numbers thereof having a different pattern, including the steps of generating a sequence of n-level random numbers based on an initial value, a number being generated at a time, determining whether a pattern of a sub-sequence is “used”, if the pattern of the sub-sequence is “used”, setting a different value to the initial value, if the pattern of the sub-sequence is not “used”, accepting the newly generated number and marking the pattern as “used”. All of the steps are repeated until all of “nm” patterns are exhausted. Since the newly generated number is rejected if the pattern of the sub-sequence is “used”, the sequence becomes the shortest one of which all of “nm” patterns are exhausted.

    摘要翻译： 一种产生“n”m + m-1“级别随机数的有效序列的方法，其具有不同模式的”m“个连续随机数的每个子序列包括以下步骤： 基于初始值的n级随机数的序列，一次生成的数，确定子序列的模式是否“被使用”，如果子序列的模式被“使用”，则设置 与初始值不同的值，如果子序列的模式不被“使用”，则接收新生成的数字并将模式标记为“已使用”。 重复所有步骤，直到所有“n”SUP“m”模式耗尽。 由于如果子序列的图案被“使用”，新生成的数字被拒绝，所以序列变成其中所有“n”个“”“模式被耗尽的最短的数字。

    Method for encoding a stream of bits of a binary source signal into a stream of bits of a binary channel signal
    8.
    发明申请
    Method for encoding a stream of bits of a binary source signal into a stream of bits of a binary channel signal 审中-公开
    用于将二进制源信号的比特流编码为二进制信道信号的比特流的方法

    公开(公告)号：US20040169595A1

    公开(公告)日：2004-09-02

    申请号：US09817095

    申请日：2001-03-26

    发明人： Antonius Adrianus Cornelis Maria Kalker ,  Jeroen Jan Lambertus Horikx ,  Willem Marie Julia Marcel Coene

    IPC分类号： H03M007/00 ,  H03M005/08

    CPC分类号： G11B20/00884 ,  G11B20/00086 ,  G11B20/00586 ,  G11B20/1426 ,  G11B20/1496 ,  G11B20/18 ,  G11B20/1809

    摘要： The invention relates to a method for encoding a stream of bits of a signal relating to a binary source into a stream of bits of a signal relating to a binary channel, the binary source comprising a main source and a secondary source, the main source being encoded in a main channel and the secondary source being encoded in a secondary channel, the secondary channel being embedded in the main channel in order to form the binary channel, wherein the binary channel is divided in blocks, each block comprising a number of user bits and that in at least one of the blocks the secondary channel also is used for encoding non-user bits. The invention further relates to an encoder to carry out this method, a decoder to decode the stream of bits relating to the binary channel and a record carrier provided with the encoded signal in the form of optically detectable marks. By means of the invention for example non-user data can be added that are used to prevent unauthorized copying.

    摘要翻译： 本发明涉及一种用于将与二进制源有关的信号的比特流编码为与二进制信道有关的信号的比特流的方法，所述二进制源包括主源和次源，所述主源为 编码在主信道中，并且次源被编码在次信道中，次信道被嵌入在主信道中以形成二进制信道，其中二进制信道被划分为块，每个块包括多个用户比特 并且在至少一个块中，辅助信道也用于对非用户比特进行编码。 本发明还涉及一种用于执行该方法的编码器，用于解码与二进制信道相关的位流的解码器和以光学可检测标记的形式提供有编码信号的记录载体。 通过本发明，例如可以添加用于防止未授权复制的非用户数据。

    Information recording/reproducing apparatus and information recording medium
    9.
    发明申请
    Information recording/reproducing apparatus and information recording medium 审中-公开
    信息记录/再现装置和信息记录介质

    公开(公告)号：US20040100883A1

    公开(公告)日：2004-05-27

    申请号：US10700524

    申请日：2003-11-05

    发明人： Koubun Sakagami

    IPC分类号： G11B007/00

    CPC分类号： G11B20/10481 ,  G11B7/004 ,  G11B20/10009 ,  G11B20/1496 ,  G11B27/36

    摘要： An information recording/reproducing apparatus, which includes a binary/multi-level data converting unit converting binary data into multi-level data, a test data generating unit generating test data forming part of the multi-level data, a data recording unit recording the multi-level data including the test data to an information recording medium, a signal reproducing unit outputting reproduction signals of the multi-level data including the test data from the information recording medium, a test data examining unit examining the reproduction signals of the multi-level data including the test data to determine whether the test data is normal, a waveform equalization unit equalizing a waveform of the examined test data when the test data examining unit determines that the test data is normal, and a multi-level determining unit determining multi-level data by referring to a pattern table generated using the examined test data.

    摘要翻译： 一种信息记录/再现装置，包括将二进制数据转换为多级数据的二进制/多级数据转换单元，产生形成多级数据的一部分的测试数据的测试数据产生单元，记录多级数据的数据记录单元的数据记录单元 包括测试数据到信息记录介质的多级数据，信号再现单元，输出包括来自信息记录介质的测试数据的多级数据的再现信号;检查数据检测单元， 包括测试数据的电平数据，以确定测试数据是否正常;当测试数据检查单元确定测试数据正常时，波形均衡单元对检查的测试数据的波形进行均衡;以及多电平确定单元，确定多个 通过参考使用检查的测试数据生成的模式表来提供高级数据。

    Optical disc medium, optical disc recording/reproducing apparatus and method
    10.
    发明申请
    Optical disc medium, optical disc recording/reproducing apparatus and method 失效
    光盘介质，光盘记录/再现装置和方法

    公开(公告)号：US20040081068A1

    公开(公告)日：2004-04-29

    申请号：US10297928

    申请日：2003-12-09

    发明人： Seiji Kobayashi

    IPC分类号： G11B007/0045 ,  G11B007/24

    CPC分类号： G11B7/24088 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/24 ,  G11B7/24079 ,  G11B20/1488 ,  G11B20/1496 ,  G11B2220/2537

    摘要： The present invention separates MTF into a plus frequency region and a minus frequency region and uses the plus frequency region and the minus frequency region to thereby enable an effectively usable frequency region to be doubled in effect. Digital information to be recorded on an optical disk medium is recorded as independent signals of, respectively, a light beam reflected or diffracted forward and a light beam reflected or diffracted backward with respect to a direction of traveling of a track on the optical disk medium. At the time of producing an optical disk medium, digital information is divided into two pieces, a complex modulating signal is generated by changing a plus frequency component and a minus frequency component according to the pieces of the divided digital information, and a laser beam is modulated on the basis of the complex modulating signal. At the time of reproducing the optical disk medium, part of the digital information is decoded from a light beam reflected or diffracted forward with respect to a direction of traveling of a track, and another part of the digital information is decoded from a light beam reflected or diffracted backward.

    摘要翻译： 本发明将MTF分离为正频域和负频区，并且使用正频区和负频区，从而使有效使用频率区的效果加倍。 要记录在光盘介质上的数字信息被分别记录为反射或衍射的光束和相对于光盘介质上的轨道行进方向反射或衍射的光束的独立信号。 在制造光盘介质时，数字信息被分成两部分，通过根据划分的数字信息改变正频率分量和负频率分量来产生复调制信号，激光束是 在复调制信号的基础上进行调制。 在再现光盘介质时，部分数字信息从相对于轨道行进方向向前反射或衍射的光束被解码，并且数字信息的另一部分从反射的光束被解码 或向后衍射。