专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20100169746A1 LOW-COMPLEXITY SOFT-DECISION DECODING OF ERROR-CORRECTION CODES 有权
标题翻译：错误校正码的低复杂度软判决解码
公开(公告)号：US20100169746A1
公开(公告)日：2010-07-01
申请号：US12651399
申请日：2009-12-31
申请人： RAZMIK KARABED , HAKAN C. OZDEMIR , VINCENT BRENDAN ASHE , RICHARD BARNDT
发明人： RAZMIK KARABED , HAKAN C. OZDEMIR , VINCENT BRENDAN ASHE , RICHARD BARNDT
IPC分类号： H03M13/45 , G06F11/10
CPC分类号： G11B20/18 , G11B20/1803 , G11B20/1833 , G11B2020/1222 , G11B2020/1836 , G11B2020/1863 , G11B2220/2516
摘要： A system and method for correcting errors in an ECC block using soft-decision data. In an embodiment, a soft-decision ECC decoding method, uses “soft” data indicative of how reliable bits of data are when read out. Such reliability information may be used to identify particular symbols with a higher likelihood of error such that these symbols may be changed in an attempt to reduce the total number of errors in the data. In an embodiment, a soft-decision ECC decoding path may include a reliability checker operable to receive bits of data read from a data store and operable to associate a reliability factor with each bit of data. Then, an update module may iteratively change bits or groups of bits based upon an ordering of the reliability factors.
摘要翻译：一种用于使用软判决数据来校正ECC块中的错误的系统和方法。在一个实施例中，软判决ECC解码方法使用指示数据可靠位读出时的“软”数据。这种可靠性信息可以用于识别具有较高错误可能性的特定符号，使得可以改变这些符号以试图减少数据中的错误总数。在一个实施例中，软判决ECC解码路径可以包括可靠性检查器，其可操作以接收从数据存储器读取的数据位，并且可操作地将可靠性因子与每个数据位相关联。然后，更新模块可以基于可靠性因素的排序迭代地改变比特或比特组。

2. 发明授权

US08390947B2 High-rate transition control code for magnetic recording channels 有权
标题翻译：磁记录通道的高速转换控制代码
公开(公告)号：US08390947B2
公开(公告)日：2013-03-05
申请号：US13275156
申请日：2011-10-17
申请人： Hakan C. Ozdemir , Razmik Karabed , Richard Barndt
发明人： Hakan C. Ozdemir , Razmik Karabed , Richard Barndt
IPC分类号： G11B5/09
CPC分类号： G11B5/09 , G11B20/10009 , G11B20/10194 , G11B20/10398 , G11B20/1833 , G11B2220/2516
摘要： A method and apparatus for reducing noise in a communication signal is provided. The method includes converting raw channel data from the communication signal to a sequence of transition code symbols, each symbol having a plurality of bits, each bit having a position within the symbol. The method also includes sending the bits of each symbol to a plurality of bins, each bin corresponding to the position of each bit within the symbol. For each bin having a number of transitions greater than a number of non-transitions, the method also includes flipping every bit in the bin and setting a corresponding bit in a flip control word to a first value. The method still further includes binary adding the flip control word to each transition code symbol.
摘要翻译：提供了一种用于降低通信信号中的噪声的方法和装置。该方法包括将来自通信信号的原始信道数据转换成转换码符号序列，每个符号具有多个位，每个位具有符号内的位置。该方法还包括将每个符号的比特发送到多个分组，每个分组对应于符号内每个比特的位置。对于具有大于非转换次数的多个转换的每个存储体，该方法还包括翻转存储体中的每一位并将翻转控制字中的相应位设置为第一值。该方法还包括将翻转控制字添加到每个转换码符号的二进制。

3. 发明申请

US20120075739A1 HIGH-RATE TRANSITION CONTROL CODE FOR MAGNETIC RECORDING CHANNELS 有权
标题翻译：磁记录通道的高速转换控制代码
公开(公告)号：US20120075739A1
公开(公告)日：2012-03-29
申请号：US13275156
申请日：2011-10-17
申请人： Hakan C. Ozdemir , Razmik Karabed , Richard Barndt
发明人： Hakan C. Ozdemir , Razmik Karabed , Richard Barndt
IPC分类号： G11B5/09
CPC分类号： G11B5/09 , G11B20/10009 , G11B20/10194 , G11B20/10398 , G11B20/1833 , G11B2220/2516
摘要： A method and apparatus for reducing noise in a communication signal is provided. The method includes converting raw channel data from the communication signal to a sequence of transition code symbols, each symbol having a plurality of bits, each bit having a position within the symbol. The method also includes sending the bits of each symbol to a plurality of bins, each bin corresponding to the position of each bit within the symbol. For each bin having a number of transitions greater than a number of non-transitions, the method also includes flipping every bit in the bin and setting a corresponding bit in a flip control word to a first value. The method still further includes binary adding the flip control word to each transition code symbol.
摘要翻译：提供了一种用于降低通信信号中的噪声的方法和装置。该方法包括将来自通信信号的原始信道数据转换成转换码符号序列，每个符号具有多个位，每个位具有符号内的位置。该方法还包括将每个符号的比特发送到多个分组，每个分组对应于符号内每个比特的位置。对于具有大于非转换次数的多个转换的每个存储体，该方法还包括翻转存储体中的每一位并将翻转控制字中的相应位设置为第一值。该方法还包括将翻转控制字添加到每个转换码符号的二进制。

4. 发明申请

US20100174954A1 NON-POLYNOMIAL PROCESSING UNIT FOR SOFT-DECISION ERROR CORRECTION CODING 有权
标题翻译：用于软决策错误校正编码的非多项式处理单元
公开(公告)号：US20100174954A1
公开(公告)日：2010-07-08
申请号：US12651386
申请日：2009-12-31
申请人： Razmik Karabed , Hakan C. Ozdemir , Vincent Brendan Ashe , Richard Barndt
发明人： Razmik Karabed , Hakan C. Ozdemir , Vincent Brendan Ashe , Richard Barndt
IPC分类号： H03M13/45 , G06F11/10 , G06F11/00 , H03M13/15
CPC分类号： H03M13/1515 , G11B20/1833 , G11B2020/1836 , G11B2220/2516 , H03M13/373 , H03M13/451
摘要： A system and method for correcting errors in an ECC block using soft-decision data. In an embodiment, a soft-decision ECC decoding method, uses “soft” data indicative of how reliable bits of data are when read out. Such a method may use an update module for receiving and manipulating the soft-decision data and iteratively change bits or groups of bits based upon an ordering of the reliability factors. Then a calculator module may determine the total number of errors still remaining after each iteration. Determining just the total number of errors instead of the actual locations is far less computationally intensive, and therefore, many combination of potential flip-bit combination may be analyzed quickly to determine if any combination might reduce the total number of errors enough to be handled by the conventional hard-decision ECC decoding method.
摘要翻译：一种用于使用软判决数据来校正ECC块中的错误的系统和方法。在一个实施例中，软判决ECC解码方法使用指示数据可靠位读出时的“软”数据。这种方法可以使用更新模块来接收和操纵软判决数据，并且基于可靠性因素的排序迭代地改变比特或比特组。然后，计算器模块可以确定在每次迭代之后仍然存在的错误的总数。仅确定总错误数量而不是实际位置的计算密集程度远低于计算密集度，因此可以快速分析潜在翻转比特组合的许多组合，以确定是否有任何组合可能会减少足够的错误总数，以便由常规的硬判决ECC解码方法。

5. 发明授权

US09419651B2 Non-polynomial processing unit for soft-decision error correction coding 有权
标题翻译：用于软判决纠错编码的非多项式处理单元
公开(公告)号：US09419651B2
公开(公告)日：2016-08-16
申请号：US12651386
申请日：2009-12-31
申请人： Razmik Karabed , Hakan C. Ozdemir , Vincent Brendan Ashe , Richard Barndt
发明人： Razmik Karabed , Hakan C. Ozdemir , Vincent Brendan Ashe , Richard Barndt
IPC分类号： H03M13/15 , G11B20/18 , H03M13/37 , H03M13/45
CPC分类号： H03M13/1515 , G11B20/1833 , G11B2020/1836 , G11B2220/2516 , H03M13/373 , H03M13/451
摘要： A system and method for correcting errors in an ECC block using soft-decision data. In an embodiment, a soft-decision ECC decoding method, uses “soft” data indicative of how reliable bits of data are when read out. Such a method may use an update module for receiving and manipulating the soft-decision data and iteratively change bits or groups of bits based upon an ordering of the reliability factors. Then a calculator module may determine the total number of errors still remaining after each iteration. Determining just the total number of errors instead of the actual locations is far less computationally intensive, and therefore, many combination of potential flip-bit combination may be analyzed quickly to determine if any combination might reduce the total number of errors enough to be handled by the conventional hard-decision ECC decoding method.
摘要翻译：一种用于使用软判决数据来校正ECC块中的错误的系统和方法。在一个实施例中，软判决ECC解码方法使用指示数据可靠位读出时的“软”数据。这种方法可以使用更新模块来接收和操纵软判决数据，并且基于可靠性因素的排序迭代地改变比特或比特组。然后，计算器模块可以确定在每次迭代之后仍然存在的错误的总数。仅确定总错误数量而不是实际位置的计算密集程度远低于计算密集度，因此可以快速分析潜在的翻转比特组合的许多组合，以确定是否有任何组合可能会减少足够数量的错误，以便由常规的硬判决ECC解码方法。

6. 发明授权

US08040626B2 High-rate transition control code for magnetic recording channels 有权
标题翻译：磁记录通道的高速转换控制代码
公开(公告)号：US08040626B2
公开(公告)日：2011-10-18
申请号：US12610036
申请日：2009-10-30
申请人： Hakan C. Ozdemir , Razmik Karabed , Richard Barndt
发明人： Hakan C. Ozdemir , Razmik Karabed , Richard Barndt
IPC分类号： G11B20/14
CPC分类号： G11B5/09 , G11B20/10009 , G11B20/10194 , G11B20/10398 , G11B20/1833 , G11B2220/2516
摘要： A method and apparatus for reducing noise in a communication signal is provided. The method includes converting raw channel data from the communication signal to a sequence of transition code symbols, each symbol having a plurality of bits, each bit having a position within the symbol. The method also includes sending the bits of each symbol to a plurality of bins, each bin corresponding to the position of each bit within the symbol. For each bin having a number of transitions greater than a number of non-transitions, the method also includes flipping every bit in the bin and setting a corresponding bit in a flip control word to a first value. The method still further includes binary adding the flip control word to each transition code symbol.
摘要翻译：提供了一种用于降低通信信号中的噪声的方法和装置。该方法包括将来自通信信号的原始信道数据转换成转换码符号序列，每个符号具有多个位，每个位具有符号内的位置。该方法还包括将每个符号的比特发送到多个分组，每个分组对应于符号内每个比特的位置。对于具有大于非转换次数的多个转换的每个存储体，该方法还包括翻转存储体中的每一位并将翻转控制字中的相应位设置为第一值。该方法还包括将翻转控制字添加到每个转换码符号的二进制。

7. 发明授权

US08413023B2 Error-locator-polynomial generation with erasure support 有权
标题翻译：错误定位 - 多项式生成与擦除支持
公开(公告)号：US08413023B2
公开(公告)日：2013-04-02
申请号：US12651392
申请日：2009-12-31
申请人： Vincent Brendan Ashe , Hakan C. Ozdemir , Razmik Karabed , Richard Barndt
发明人： Vincent Brendan Ashe , Hakan C. Ozdemir , Razmik Karabed , Richard Barndt
IPC分类号： G06F11/00
CPC分类号： H03M13/154 , G11B20/1833 , G11B2020/1836 , G11B2220/2516 , H03M13/152 , H03M13/153 , H03M13/1545 , H03M13/41 , H03M13/455 , H03M13/6343
摘要： A system and method for correcting errors in an ECC block using erasure-identification data when generating an error-locator polynomial. In an embodiment, a ECC decoding method, uses “erasure” data indicative of bits of data that are unable to be deciphered by a decoder. Such a method may use an Berlekamp-Massey algorithm that receives two polynomials as inputs; a first polynomial indicative of erasure location in the stream of bits and a syndrome polynomial indicative of all bits as initially determined. The Berlekamp-Massey algorithm may use the erasure identification information to more easily decipher the overall codeword when faced with a error-filled codeword.
摘要翻译：一种用于在生成错误定位多项式时使用擦除识别数据来校正ECC块中的错误的系统和方法。在一个实施例中，ECC解码方法使用指示不能被解码器解密的数据位的擦除数据。这种方法可以使用接收两个多项式作为输入的Berlekamp-Massey算法; 指示比特流中的擦除位置的第一多项式和指示最初确定的所有比特的校正子多项式。 Berlekamp-Massey算法可以使用擦除识别信息在面对错误填充码字时更容易地破译整个码字。

8. 发明授权

US08595582B2 High-rate reverse-order run-length-limited code 有权
公开(公告)号：US08595582B2
公开(公告)日：2013-11-26
申请号：US12896613
申请日：2010-10-01
申请人： Hakan C. Ozdemir , Razmik Karabed , Richard Barndt , Kuhong Jeong
发明人： Hakan C. Ozdemir , Razmik Karabed , Richard Barndt , Kuhong Jeong
IPC分类号： H03M13/00
CPC分类号： H03M7/46 , G11B5/09 , G11B20/1403 , H03M5/145
摘要： A system and method for encoding a stream of bits with a run-length limited high-rate reverse order encoding schema. According to one embodiment, an RLL encoding block includes a receiver having a precoder operable to receive a stream of N-bits having symbols of M-bits in length, a histogram operable to identify an index symbol of M-bits that does not occur within the received stream of N-bits. It is this index symbol that may be used as the key to encoding a block of symbols so as to ensure unique decodability when RLL decoding. Finally, an encoder operable to perform an exclusive-or operation on each symbol with the next symbol stored in the stream. Such an encoding system only adds one symbol of M bits in length to a block of N bits and still results in a stream of bits sufficient to support high-rate requirements and strict timing loop control.

9. 发明授权

US08407563B2 Low-complexity soft-decision decoding of error-correction codes 有权
标题翻译：纠错码的低复杂度软判决解码
公开(公告)号：US08407563B2
公开(公告)日：2013-03-26
申请号：US12651399
申请日：2009-12-31
申请人： Razmik Karabed , Hakan C. Ozdemir , Vincent Brendan Ashe , Richard Barndt
发明人： Razmik Karabed , Hakan C. Ozdemir , Vincent Brendan Ashe , Richard Barndt
IPC分类号： G11C29/00
CPC分类号： G11B20/18 , G11B20/1803 , G11B20/1833 , G11B2020/1222 , G11B2020/1836 , G11B2020/1863 , G11B2220/2516
摘要： A system and method for correcting errors in an ECC block using soft-decision data. In an embodiment, a soft-decision ECC decoding method, uses “soft” data indicative of how reliable bits of data are when read out. Such reliability information may be used to identify particular symbols with a higher likelihood of error such that these symbols may be changed in an attempt to reduce the total number of errors in the data. In an embodiment, a soft-decision ECC decoding path may include a reliability checker operable to receive bits of data read from a data store and operable to associate a reliability factor with each bit of data. Then, an update module may iteratively change bits or groups of bits based upon an ordering of the reliability factors.
摘要翻译：一种用于使用软判决数据来校正ECC块中的错误的系统和方法。在一个实施例中，软判决ECC解码方法使用指示在读出时数据的可靠位如何的软数据。这种可靠性信息可以用于识别具有较高错误可能性的特定符号，使得可以改变这些符号以试图减少数据中的错误总数。在一个实施例中，软判决ECC解码路径可以包括可靠性检查器，其可操作以接收从数据存储器读取的数据位，并且可操作地将可靠性因子与每个数据位相关联。然后，更新模块可以基于可靠性因素的排序迭代地改变比特或比特组。

10. 发明申请

US20110083054A1 HIGH-RATE REVERSE-ORDER RUN-LENGTH-LIMITED CODE 有权
标题翻译：高速逆向运行有限公司的代码
公开(公告)号：US20110083054A1
公开(公告)日：2011-04-07
申请号：US12896613
申请日：2010-10-01
申请人： Hakan C. Ozdemir , Razmik Karabed , Richard Barndt , Kuhong Jeong
发明人： Hakan C. Ozdemir , Razmik Karabed , Richard Barndt , Kuhong Jeong
IPC分类号： H03M7/00 , H03M13/05 , G06F12/00 , G06F11/10
CPC分类号： H03M7/46 , G11B5/09 , G11B20/1403 , H03M5/145
摘要： A system and method for encoding a stream of bits with a run-length limited high-rate reverse order encoding schema. According to one embodiment, an RLL encoding block includes a receiver having a precoder operable to receive a stream of N-bits having symbols of M-bits in length, a histogram operable to identify an index symbol of M-bits that does not occur within the received stream of N-bits. It is this index symbol that may be used as the key to encoding a block of symbols so as to ensure unique decodability when RLL decoding. Finally, an encoder operable to perform an exclusive-or operation on each symbol with the next symbol stored in the stream. Such an encoding system only adds one symbol of M bits in length to a block of N bits and still results in a stream of bits sufficient to support high-rate requirements and strict timing loop control.
摘要翻译：一种用游程长度有限的高速逆序编码模式来编码比特流的系统和方法。根据一个实施例，RLL编码块包括具有预编码器的接收机，该预编码器可用于接收具有长度为M比特符号的N比特流，可用于识别不存在于M比特内的M比特的索引符号的直方图接收的N位流。可以将该索引符号用作编码符号块的关键，以便在RLL解码时确保唯一的可解码性。最后，编码器可操作以对存储在流中的下一个符号执行对每个符号的异或运算。这样的编码系统仅将一个长度为M位的符号添加到N位块，并且仍然产生足以支持高速率要求和严格的定时环控制的位流。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式