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    • 1. 发明授权
    • Method and apparatus for high integrity hardware memory compression
    • 用于高完整性硬件存储器压缩的方法和装置
    • US06519733B1
    • 2003-02-11
    • US09511849
    • 2000-02-23
    • David HarKwok-Ken MakCharles O. SchulzT. Basil Smith, IIIR. Brett Tremaine
    • David HarKwok-Ken MakCharles O. SchulzT. Basil Smith, IIIR. Brett Tremaine
    • H03M1300
    • G06F11/1004G06F12/08G06F2212/401H03M7/30
    • In a processing system having a main memory, wherein information is stored in a compressed format for the purpose of gaining additional storage through compression efficiencies, a method and apparatus for providing compressed data integrity verification to insure detection of nearly any data corruption resulting from an anomaly anywhere in the logical processing or storage of compressed information. A cyclic redundancy code (CRC) is computed over a compressed data block as the data enters the compressor hardware, and the CRC is appended to the compressor output block before it is stored into the main memory. Subsequent read access results in comparing the CRC against a recomputation of the CRC as the block is uncompressed from the main memory. Any CRC miscompare implies an uncorrectable data error condition that may be used to interrupt the system operation.
    • 在具有主存储器的处理系统中,其中以压缩格式存储信息以通过压缩效率获得额外的存储,提供压缩数据完整性验证的方法和装置,以确保几乎任何由异常引起的数据损坏的检测 任何地方在逻辑处理或存储压缩信息。 当数据进入压缩器硬件时,在压缩数据块上计算循环冗余码(CRC),并且在存储到主存储器之前将CRC附加到压缩器输出块。 随后的读取访问导致在块与主存储器未压缩时比较CRC与CRC的重新计算。 任何CRC错误比较意味着可能用于中断系统操作的不可校正数据错误条件。