Arrangement and method for improving the data integrity with a r

Details Arrangement and method for improving the data integrity with a r Arrangement and method for improving the data integrity with a r

1997-11-17

1999-10-26

Shin, Christopher B.

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output data buffering

711110, G06F 1300

Patent

active

059744855

ABSTRACT:
In a method and apparatus for improving data integrity using a ring buffer, a ring buffer is formed by at least one of the memory areas of a non-volatile read-write memory being administered by a pointer counter such that a ring buffer that can be read out and written is produced in a non-volatile read-write memory. The ring buffer composed of a number of memory cells needed for conventional operation, expanded by one additional memory cell, and a cyclical pointer counter. The oldest dataset is overwritten in a write operation, and whereby the pointer counter is incremented after the new dataset was written into a memory cell in which the oldest dataset was previously located, so that the pointer of the aforementioned pointer counter now points to a memory cell having what is now an oldest dataset that can be overwritten in the next write operation. A microprocessor connected to the memory in which the ring buffer is formed is programmed to ignore the respective memory cell to which the pointer points for any and all read accesses. The readout of a dataset from the other memory cells, however, is enabled.

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