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FREE PAGE DETECTING METHOD FOR DETERMINING THE FREE PAGE ACCORDING TO THE NUMBER OF ERROR BITS IN THE FREE PAGE AND AN ERROR CORRECTION CODE DECODING METHOD AND A DEVICE THEREOF
FREE PAGE DETECTING METHOD FOR DETERMINING THE FREE PAGE ACCORDING TO THE NUMBER OF ERROR BITS IN THE FREE PAGE AND AN ERROR CORRECTION CODE DECODING METHOD AND A DEVICE THEREOF
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机译:用于根据免费页面中错误位的数量确定免费页面的免费页面检测方法以及错误纠正代码解码方法及其装置
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摘要
PURPOSE: A free page detecting method, an error correction code decoding method and a device thereof are provided to prevent the reduction of a memory size by normally using a page which has the number of errors within a tolerance range.;CONSTITUTION: A conversion mode changing a free page data to an arbitrary codeword is established(S401). A data read from the memory is transformed by applying the preset conversion mode(S402). The transformed codeword and the preset codeword are compared according to a corresponding bit(S403). The number of total bits which are different each other according to a comparison result is detected(S404). The number of the total bits which are different each other is compared with a critical value(S405). A free page determining procedure is operated(S406). A ECC(Error Correction Code) decoding is suspended(S407). A normal ECC decoding is executed(S408).;COPYRIGHT KIPO 2010
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