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    • 44. 发明申请
    • GENERATING A CODE ALPHABET OF SYMBOLS TO GENERATE CODEWORDS FOR WORDS USED WITH A PROGRAM
    • 生成用于生成与程序一起使用的文字的编码的符号代码标签
    • US20130169453A1
    • 2013-07-04
    • US13342899
    • 2012-01-03
    • Roy D. CideciyanGlen A. JaquetteThomas Mittelholzer
    • Roy D. CideciyanGlen A. JaquetteThomas Mittelholzer
    • H03M7/40
    • H03M7/40
    • Provided are a computer program product, system, and method for generating a code alphabet for use by a deployed program to determine codewords for words. A first code alphabet is generated having a first number of symbols that provide variable length codings of the words. The symbols in the first code alphabet are merged into a second number of groups of the symbols in the first code alphabet, where the second number is less than the first number. A second code alphabet is generated having the second number of symbols, wherein a second average codeword length of the codewords produced using the symbols in the second code alphabet is smaller than the codeword length (b) of the words, and wherein the second code alphabet comprises the code alphabet used by the deployed program.
    • 提供了一种用于生成代码字母表的计算机程序产品,系统和方法,用于部署程序用于确定字的码字。 产生具有提供字的可变长度编码的符号的第一数量的第一代码字母表。 第一代码字母表中的符号被合并到第一代码字母表中的第二数量的符号组中,其中第二个数字小于第一个数字。 产生具有第二数量符号的第二码字母,其中使用第二码字母表中的符号产生的码字的第二平均码字长度小于字的码字长度(b),并且其中第二码字母 包括部署程序使用的代码字母表。
    • 46. 发明申请
    • DATA STORAGE SYSTEMS
    • 数据存储系统
    • US20090089645A1
    • 2009-04-02
    • US12058151
    • 2008-03-28
    • Roy D. CideciyanAjay DholakiaEvangelos S. EleftheriouThomas Mittelholzer
    • Roy D. CideciyanAjay DholakiaEvangelos S. EleftheriouThomas Mittelholzer
    • H03M13/00
    • G11B20/1833
    • Method and apparatus for decoding data in a data storage system. In operation, a detector generates an output bit stream in dependence on a data block received from a storage subsystem of the data storage system. A post processor connected to the detector generates a first error corrected bit stream in dependence on the output bit stream and the data block. An error correction decoder connected to the post processor generates a second error corrected bit stream in dependence on the first error corrected bit stream and also generates a checksum in dependence of the second error corrected bit stream. A feedback path supplies from the error correction decoder to the post processor pinning data indicative of locations of correct bits in the second error corrected bit stream in the event that the checksum is indicative of errors in the second error corrected bit stream and the second error corrected bit stream comprises at least one correct interleave. The post processor regenerates the first error corrected bit stream in dependence on the pinning data received from the error correction decoder.
    • 用于在数据存储系统中解码数据的方法和装置。 在操作中,检测器根据从数据存储系统的存储子系统接收的数据块产生输出位流。 连接到检测器的后处理器根据输出比特流和数据块生成第一纠错比特流。 连接到后处理器的纠错解码器根据第一纠错比特流产生第二纠错比特流,并且还根据第二纠错比特流产生校验和。 在校验和指示第二纠错比特流中的错误并且校正的第二错误的情况下,反馈路径从错误校正解码器向后处理器提供钉扎指示第二纠错比特流中的正确比特的位置的数据 位流包括至少一个正确的交错。 后处理器根据从纠错解码器接收到的钉扎数据重新生成第一纠错比特流。