Memory readback check method and apparatus

Details Memory readback check method and apparatus Memory readback check method and apparatus

G - Physics

06

F

354/224

G06F 11/00 (2006.01) G06F 3/06 (2006.01) G06F 11/10 (2006.01) G06F 11/14 (2006.01)

Patent

CA 1148263

Abstract of the Disclosure A high speed readback check of data transferred to a cyclic memory before the data source is lost. The cyclic memory is organized into a number of data blocks, each interleaved with or simultaneously accessible with the other data blocks. Thus, a long data record comprises several data blocks and therefore several cycles of the memory. A readback check of data transferred from a source into the memory is accomplished by writing data into one data block in a first cycle, writing data into another block on the second cycle while reading back the first data block and calculating a check character therefrom, continuing through the writing of the entire record, and reading the last block of written data and calculating the check character, and then comparing the calculated check character with a character calculated from the source data to detect any error before the source of the record is lost.

364206

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