Method and apparatus for channel coding and decoding
    1.
    发明授权
    Method and apparatus for channel coding and decoding 有权
    信道编码和解码的方法和装置

    公开(公告)号:US07773002B2

    公开(公告)日:2010-08-10

    申请号:US12150828

    申请日:2008-05-01

    IPC分类号: H03M7/00

    CPC分类号: H03M5/145

    摘要: In a channel encoder comprising a dk-encoder stage and a precoding stage, obeyance of a repeated minimum transition runlength constraint is achieved because, between the dk-encoder and the precoder, data are passed through an RMTR encoder which replaces occurrences of a forbidden pattern by a current replacement pattern having the same length as the forbidden pattern. By appropriately selecting current replacement patterns from a predefined set of two different replacement patterns, DC-control can be achieved for the encoder output. The corresponding decoder is described, which also employs pattern replacement.These results are provided by a method of channel encoding binary data, wherein the data is contained in a n input sequence of data tuples. An input sequence of constrained tuples is generated that obeys the relationships heretorfore set forth. A post encoding step is applied with NRZI modulation to be used in a channel as described.

    摘要翻译: 在包括dk编码器级和预编码级的信道编码器中,实现了重复的最小转换延长约束的遵守,因为在dk编码器和预编码器之间,数据通过RMTR编码器,该RMTR编码器代替禁止模式的出现 通过具有与禁止图案相同长度的当前替换图案。 通过从预定义的两组不同的替代模式中适当地选择当前的替换模式,可以为编码器输出实现直流控制。 描述了相应的解码器,其也采用模式替换。 这些结果由通道编码二进制数据的方法提供,其中数据被包含在数据元组的n个输入序列中。 生成约束元组的输入序列,其遵循之前阐述的关系。 后编码步骤应用于如所描述的在信道中使用的NRZI调制。

    Method and apparatus for erasure decoding an ECC coded bitstream
    6.
    发明授权
    Method and apparatus for erasure decoding an ECC coded bitstream 有权
    用于擦除ECC编码比特流解码的方法和装置

    公开(公告)号:US08560912B2

    公开(公告)日:2013-10-15

    申请号:US12998542

    申请日:2009-10-28

    IPC分类号: H03M13/00 G06F11/00

    摘要: The error correction capability of block codes can be doubled if error locations are known. Prior art approaches for error location detection always involve adding dedicated redundant data which then are evaluated to yield error location information. The present invention proposes and describes how error location information in the form of clues is derived from given DC control bits that are anyway present in a data stream.

    摘要翻译: 如果错误位置已知,则块代码的纠错能力可以加倍。 用于错误位置检测的现有技术方法总是涉及添加专用冗余数据,然后进行评估以产生错误位置信息。 本发明提出并描述了线索形式的错误位置信息是如何从存在于数据流中的给定DC控制位导出的。

    METHOD AND APARATUS FOR ERASURE DECODING AN ECC CODED BITSTREAM
    7.
    发明申请
    METHOD AND APARATUS FOR ERASURE DECODING AN ECC CODED BITSTREAM 有权
    用于擦除ECC编码BITSTREAM的方法和APARATUS

    公开(公告)号:US20110225474A1

    公开(公告)日:2011-09-15

    申请号:US12998542

    申请日:2009-10-28

    IPC分类号: H03M13/05 G06F11/10

    摘要: The error correction capability of block codes can be doubled if error locations are known. Prior art approaches for error location detection always involve adding dedicated redundant data which then are evaluated to yield error location information. The present invention proposes and describes how error location information in the form of clues is derived from given DC control bits that are anyway present in a data stream.

    摘要翻译: 如果错误位置已知,则块代码的纠错能力可以加倍。 用于错误位置检测的现有技术方法总是涉及添加专用冗余数据,然后进行评估以产生错误位置信息。 本发明提出并描述了线索形式的错误位置信息是如何从存在于数据流中的给定DC控制位导出的。

    Method and apparatus for channel coding having small running digital sum
    8.
    发明授权
    Method and apparatus for channel coding having small running digital sum 有权
    具有小运行数字和的信道编码的方法和装置

    公开(公告)号:US07773001B2

    公开(公告)日:2010-08-10

    申请号:US12150680

    申请日:2008-04-30

    IPC分类号: H03M7/00

    CPC分类号: H03M5/145 G11B20/1426

    摘要: For controlling the DC-content of a Run Length Limited RLL modulated channel bit stream organized in data blocks, control bits are periodically inserted into control blocks which are dynamically placed and sized near the data block boundaries in such a way as to enable independent dk-encoding of the data blocks body and the control blocks. Running digital sum differences are calculated. Control bit insertion is done in such a way that the d,k constraints of the RLL code are not violated, that the encoded dk sequence of the data block body is not altered, and that the running digital sum is minimized by eventually inverting the contribution of the data block body thereto. Compared to the number of data bits per data block, few control bits are sufficient to keep the digital sum variation DSV of the Running Digital Sum RDS small.

    摘要翻译: 为了控制组织在数据块中的运行长度有限的RLL调制信道位流的DC内容,控制位被周期性地插入控制块中,这些控制块在数据块边界附近被动态放置和定尺寸,以使能独立的dk- 数据块体和控制块的编码。 计算运算数字和差。 以这样的方式完成控制位插入,使得RLL代码的d,k约束不被违反,数据块体的编码的dk序列不被改变,并且通过最终反转贡献来使运行的数字和被最小化 的数据块体。 与每个数据块的数据位数相比,几个控制位足以保持运行数字和RDS的数字和变化DSV小。

    Method and apparatus for channel coding
    9.
    发明申请
    Method and apparatus for channel coding 有权
    信道编码方法和装置

    公开(公告)号:US20080278356A1

    公开(公告)日:2008-11-13

    申请号:US12150680

    申请日:2008-04-30

    IPC分类号: H03M7/00

    CPC分类号: H03M5/145 G11B20/1426

    摘要: For controlling the DC-content of a Run Length Limited RLL modulated channel bit stream organized in data blocks, control bits are periodically inserted into control blocks which are dynamically placed and sized near the data block boundaries in such a way as to enable independent dk-encoding of the data blocks body and the control blocks. Running digital sum differences are calculated. Control bit insertion is done in such a way that the d,k constraints of the RLL code are not violated, that the encoded dk sequence of the data block body is not altered, and that the running digital sum is minimized by eventually inverting the contribution of the data block body thereto. Compared to the number of data bits per data block, few control bits are sufficient to keep the digital sum variation DSV of the Running Digital Sum RDS small.

    摘要翻译: 为了控制组织在数据块中的运行长度有限的RLL调制信道位流的DC内容,控制位被周期性地插入控制块中,这些控制块在数据块边界附近被动态放置和定尺寸,以使能独立的dk- 数据块体和控制块的编码。 计算运算数字和差。 以这样的方式完成控制位插入,使得RLL代码的d,k约束不被违反,数据块体的编码的dk序列不被改变,并且通过最终反转贡献来使运行的数字和被最小化 的数据块体。 与每个数据块的数据位数相比,几个控制位足以保持运行数字和RDS的数字和变化DSV小。

    Method and apparatus for channel coding and decoding
    10.
    发明申请
    Method and apparatus for channel coding and decoding 有权
    信道编码和解码的方法和装置

    公开(公告)号:US20080272940A1

    公开(公告)日:2008-11-06

    申请号:US12150828

    申请日:2008-05-01

    IPC分类号: H03M7/00

    CPC分类号: H03M5/145

    摘要: In a channel encoder comprising a dk-encoder stage and a precoding stage, obeyance of a repeated minimum transition runlength constraint is achieved because, between the dk-encoder and the precoder, data are passed through an RMTR encoder which replaces occurrences of a forbidden pattern by a current replacement pattern having the same length as the forbidden pattern. By appropriately selecting current replacement patterns from a predefined set of two different replacement patterns, DC-control can be achieved for the encoder output. The corresponding decoder is described, which also employs pattern replacement.

    摘要翻译: 在包括dk编码器级和预编码级的信道编码器中,实现了重复的最小转换延长约束的遵守,因为在dk编码器和预编码器之间,数据通过RMTR编码器,该RMTR编码器代替禁止模式的出现 通过具有与禁止图案相同长度的当前替换图案。 通过从预定义的两组不同的替代模式中适当地选择当前的替换模式,可以为编码器输出实现直流控制。 描述了相应的解码器,其也采用模式替换。