HIGH-PERFORMANCE ECC DECODER
    1.
    发明申请
    HIGH-PERFORMANCE ECC DECODER 审中-公开
    高性能ECC解码器

    公开(公告)号:US20150347230A1

    公开(公告)日:2015-12-03

    申请号:US14821124

    申请日:2015-08-07

    Applicant: Apple Inc.

    Abstract: Methods for Error Correction Code (ECC) decoding include producing syndromes from a set of bits, which represent data that has been encoded with the ECC. An Error Locator Polynomial (ELP) is generated based on the syndromes. At least some of the ELP roots are identified, and the errors indicated by these roots are corrected. Each syndrome may be produced by applying to the bits vector operations in a vector space. Each syndrome is produced by applying vector operations using a different basis of the vector space. The ELP may be evaluated on a given field element by operating on ELP coefficients using serial multipliers, wherein each serial multiplier performs a sequence of multiplication cycles and produces an interim result in each cycle. Responsively to detecting at least one interim result indicating that the given element is not an ELP root, the multiplication cycles are terminated before completion of the sequence.

    Abstract translation: 用于纠错码(ECC)解码的方法包括从表示已经用ECC编码的数据的一组位产生综合征。 错误定位器多项式(ELP)是基于综合征产生的。 识别至少一些ELP根,并校正由这些根指示的错误。 可以通过应用向量空间中的比特向量操作来产生每个综合征。 通过使用向量空间的不同基础应用向量运算来产生每个综合征。 可以通过使用串行乘法器对ELP系数进行操作,在给定的场元件上评估ELP,其中每个串行乘法器执行乘法周期序列,并在每个周期中产生中间结果。 响应于检测至少一个中期结果,指示给定的元素不是ELP根,在完成序列之前终止乘法循环。

    EFFICIENT LDPC CODES
    2.
    发明申请
    EFFICIENT LDPC CODES 审中-公开
    有效的LDPC码

    公开(公告)号:US20140149820A1

    公开(公告)日:2014-05-29

    申请号:US14090498

    申请日:2013-11-26

    Applicant: Apple Inc.

    Abstract: A method includes accepting a definition of a mother Error Correction Code (ECC) that is represented by a set of parity check equations and includes first code words, and a definition of a punctured ECC that includes second code words and is derived from the mother ECC by removal of one or more of the parity check equations and removal of one or more punctured check symbols selected from among check symbols of the first code words. A mother decoder, which is designed to decode the mother ECC by exchanging messages between symbol nodes and check nodes in accordance with a predefined interconnection scheme that represents the mother ECC, is provided. An input code word of the punctured ECC is decoded using the mother decoder by initializing one or more of the symbol nodes and controlling one or more of the messages, and while retaining the interconnection scheme.

    Abstract translation: 一种方法包括接受由一组奇偶校验方程表示的母体误差校正码(ECC)的定义,并且包括第一码字和包括第二码字并从母体ECC导出的穿孔ECC的定义 通过去除一个或多个奇偶校验方程和从第一码字的检查符号中选出的一个或多个穿孔校验符号的去除。 提供了一种母版解码器,其被设计为通过根据表示母ECC的预定互连方案在符号节点和校验节点之间交换消息来解码母ECC。 通过初始化符号节点中的一个或多个并控制消息中的一个或多个,同时保留互连方案,使用母版解码器解码穿孔ECC的输入码字。

    HIGH-PERFORMANCE ECC DECODER
    3.
    发明申请
    HIGH-PERFORMANCE ECC DECODER 审中-公开
    高性能ECC解码器

    公开(公告)号:US20140164884A1

    公开(公告)日:2014-06-12

    申请号:US14182802

    申请日:2014-02-18

    Applicant: Apple Inc.

    Abstract: Methods for Error Correction Code (ECC) decoding include producing syndromes from a set of bits, which represent data that has been encoded with the ECC. An Error Locator Polynomial (ELP) is generated based on the syndromes. At least some of the ELP roots are identified, and the errors indicated by these roots are corrected. Each syndrome may be produced by applying to the bits vector operations in a vector space. Each syndrome is produced by applying vector operations using a different basis of the vector space. The ELP may be evaluated on a given field element by operating on ELP coefficients using serial multipliers, wherein each serial multiplier performs a sequence of multiplication cycles and produces an interim result in each cycle. Responsively to detecting at least one interim result indicating that the given element is not an ELP root, the multiplication cycles are terminated before completion of the sequence.

    Abstract translation: 用于纠错码(ECC)解码的方法包括从表示已经用ECC编码的数据的一组位产生综合征。 错误定位器多项式(ELP)是基于综合征产生的。 识别至少一些ELP根,并校正由这些根指示的错误。 可以通过应用向量空间中的比特向量操作来产生每个综合征。 通过使用向量空间的不同基础应用向量运算来产生每个综合征。 可以通过使用串行乘法器对ELP系数进行操作,在给定的场元件上评估ELP,其中每个串行乘法器执行乘法周期序列,并在每个周期中产生中间结果。 响应于检测至少一个中期结果,指示给定的元素不是ELP根,在完成序列之前终止乘法循环。

    High-performance ECC decoder
    4.
    发明授权
    High-performance ECC decoder 有权
    高性能ECC解码器

    公开(公告)号:US09136871B2

    公开(公告)日:2015-09-15

    申请号:US14182802

    申请日:2014-02-18

    Applicant: Apple Inc.

    Abstract: Methods for Error Correction Code (ECC) decoding include producing syndromes from a set of bits, which represent data that has been encoded with the ECC. An Error Locator Polynomial (ELP) is generated based on the syndromes. At least some of the ELP roots are identified, and the errors indicated by these roots are corrected. Each syndrome may be produced by applying to the bits vector operations in a vector space. Each syndrome is produced by applying vector operations using a different basis of the vector space. The ELP may be evaluated on a given field element by operating on ELP coefficients using serial multipliers, wherein each serial multiplier performs a sequence of multiplication cycles and produces an interim result in each cycle. Responsively to detecting at least one interim result indicating that the given element is not an ELP root, the multiplication cycles are terminated before completion of the sequence.

    Abstract translation: 用于纠错码(ECC)解码的方法包括从表示已经用ECC编码的数据的一组位产生综合征。 错误定位器多项式(ELP)是基于综合征产生的。 识别至少一些ELP根,并校正由这些根指示的错误。 可以通过应用向量空间中的比特向量操作来产生每个综合征。 通过使用向量空间的不同基础应用向量运算来产生每个综合征。 可以通过使用串行乘法器对ELP系数进行操作,在给定的场元件上评估ELP,其中每个串行乘法器执行乘法循环序列,并在每个周期中产生中间结果。 响应于检测至少一个中期结果,指示给定的元素不是ELP根,在完成序列之前终止乘法循环。

    High-performance ECC decoder
    5.
    发明授权
    High-performance ECC decoder 有权
    高性能ECC解码器

    公开(公告)号:US08700977B2

    公开(公告)日:2014-04-15

    申请号:US13920140

    申请日:2013-06-18

    Applicant: Apple Inc.

    Abstract: Methods for Error Correction Code (ECC) decoding include producing syndromes from a set of bits, which represent data that has been encoded with the ECC. An Error Locator Polynomial (ELP) is generated based on the syndromes. At least some of the ELP roots are identified, and the errors indicated by these roots are corrected. Each syndrome may be produced by applying to the bits vector operations in a vector space. Each syndrome is produced by applying vector operations using a different basis of the vector space. The ELP may be evaluated on a given field element by operating on ELP coefficients using serial multipliers, wherein each serial multiplier performs a sequence of multiplication cycles and produces an interim result in each cycle. Responsively to detecting at least one interim result indicating that the given element is not an ELP root, the multiplication cycles are terminated before completion of the sequence.

    Abstract translation: 用于纠错码(ECC)解码的方法包括从表示已经用ECC编码的数据的一组位产生综合征。 错误定位器多项式(ELP)是基于综合征产生的。 识别至少一些ELP根,并校正由这些根指示的错误。 可以通过应用向量空间中的比特向量操作来产生每个综合征。 通过使用向量空间的不同基础应用向量运算来产生每个综合征。 可以通过使用串行乘法器对ELP系数进行操作,在给定的场元件上评估ELP,其中每个串行乘法器执行乘法周期序列,并在每个周期中产生中间结果。 响应于检测至少一个中期结果,指示给定的元素不是ELP根,在完成序列之前终止乘法循环。

    High-performance ECC decoder
    7.
    发明授权
    High-performance ECC decoder 有权
    高性能ECC解码器

    公开(公告)号:US09535788B2

    公开(公告)日:2017-01-03

    申请号:US14821124

    申请日:2015-08-07

    Applicant: Apple Inc.

    Abstract: Methods for Error Correction Code (ECC) decoding include producing syndromes from a set of bits, which represent data that has been encoded with the ECC. An Error Locator Polynomial (ELP) is generated based on the syndromes. At least some of the ELP roots are identified, and the errors indicated by these roots are corrected. Each syndrome may be produced by applying to the bits vector operations in a vector space. Each syndrome is produced by applying vector operations using a different basis of the vector space. The ELP may be evaluated on a given field element by operating on ELP coefficients using serial multipliers, wherein each serial multiplier performs a sequence of multiplication cycles and produces an interim result in each cycle. Responsively to detecting at least one interim result indicating that the given element is not an ELP root, the multiplication cycles are terminated before completion of the sequence.

    Abstract translation: 用于纠错码(ECC)解码的方法包括从表示已经用ECC编码的数据的一组位产生综合征。 错误定位器多项式(ELP)是基于综合征产生的。 识别至少一些ELP根,并校正由这些根指示的错误。 可以通过应用向量空间中的比特向量操作来产生每个综合征。 通过使用向量空间的不同基础应用向量运算来产生每个综合征。 可以通过使用串行乘法器对ELP系数进行操作,在给定的场元件上评估ELP,其中每个串行乘法器执行乘法周期序列,并在每个周期中产生中间结果。 响应于检测至少一个中期结果,指示给定的元素不是ELP根,在完成序列之前终止乘法循环。

    Efficient LDPC codes
    8.
    发明授权
    Efficient LDPC codes 有权
    高效的LDPC码

    公开(公告)号:US09075738B2

    公开(公告)日:2015-07-07

    申请号:US14090498

    申请日:2013-11-26

    Applicant: Apple Inc.

    Abstract: A method includes accepting a definition of a mother Error Correction Code (ECC) that is represented by a set of parity check equations and includes first code words, and a definition of a punctured ECC that includes second code words and is derived from the mother ECC by removal of one or more of the parity check equations and removal of one or more punctured check symbols selected from among check symbols of the first code words. A mother decoder, which is designed to decode the mother ECC by exchanging messages between symbol nodes and check nodes in accordance with a predefined interconnection scheme that represents the mother ECC, is provided. An input code word of the punctured ECC is decoded using the mother decoder by initializing one or more of the symbol nodes and controlling one or more of the messages, and while retaining the interconnection scheme.

    Abstract translation: 一种方法包括接受由一组奇偶校验方程表示的母体误差校正码(ECC)的定义,并且包括第一码字和包括第二码字并从母体ECC导出的穿孔ECC的定义 通过去除一个或多个奇偶校验方程和从第一码字的检查符号中选出的一个或多个穿孔校验符号的去除。 提供了一种母版解码器,其被设计为通过根据表示母ECC的预定互连方案在符号节点和校验节点之间交换消息来解码母ECC。 通过初始化符号节点中的一个或多个并控制消息中的一个或多个,同时保留互连方案,使用母版解码器解码穿孔ECC的输入码字。

    HIGH-PERFORMANCE ECC DECODER
    9.
    发明申请

    公开(公告)号:US20130283133A1

    公开(公告)日:2013-10-24

    申请号:US13920140

    申请日:2013-06-18

    Applicant: Apple Inc.

    Abstract: Methods for Error Correction Code (ECC) decoding include producing syndromes from a set of bits, which represent data that has been encoded with the ECC. An Error Locator Polynomial (ELP) is generated based on the syndromes. At least some of the ELP roots are identified, and the errors indicated by these roots are corrected. Each syndrome may be produced by applying to the bits vector operations in a vector space. Each syndrome is produced by applying vector operations using a different basis of the vector space. The ELP may be evaluated on a given field element by operating on ELP coefficients using serial multipliers, wherein each serial multiplier performs a sequence of multiplication cycles and produces an interim result in each cycle. Responsively to detecting at least one interim result indicating that the given element is not an ELP root, the multiplication cycles are terminated before completion of the sequence.

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