| 摘要 |
PURPOSE:To shorten the overall processing time by carrying out both correct reading and writing data production processes in parallel with each other and selecting both data to produce a correct writing data. CONSTITUTION:The read data are held at a data register 11 and the correct reading data having no error is extracted as the data D14 via a syndrome generating circuit 12, a decoder 13 and an error correcting circuit 14. While the writing data D16 is obtained via a data aligner 15. A multiplexer 18 selects the data D16 for a rewritten data part and then selects the data D14 for other data parts. Thus the correct writing data D18 is delivered with no error. |
