20090091977 | METHOD AND SYSTEM FOR UPDATING A STORED DATA VALUE IN A NON-VOLATILE MEMORY - The invention provides a method of updating a stored data value in a non-volatile memory. The method includes 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 the non-volatile memory if the calculated differential value exceeds the threshold differential value. The invention further provides a related memory system. | 04-09-2009 |