METHOD AND SYSTEM FOR UPDATING A STORED DATA VALUE IN A NON-VOLATILE MEMORY

摘要

A method of updating a stored data value in a non-volatile memory is provide d. The method comprising: reading the stored data value from the non-volatile memory; reading a stored differential value from a volatile memory; receiving an updated data value; calculating a calculated differential value from the difference between the updated data value and the sum of the stored data value and the stored differential value; comparing the calculated differential value with a threshold differential value; and writing the updated data value to t he non-volatile memory if the calculated differential value exceeds the threshold differenti al value.