MEMORY LIFE EXTENSION SYSTEM AND METHOD

摘要

A memory life extension system and method is provided for managing operation of rewritable memory used to store a monotonically increasing sequence of multiple-byte binary values in a set of one or more memory locations in the rewritable memory. A first value is read in from a set of one or more memory locations. On detection of an instruction to store an incremented value, the incremented value is permuted by applying an encoding, in which a value of a least significant bit changes only on every second increment, to two least significant bits of the incremented value. On overflow of a least significant byte as a result of the increment, a cyclic byte-wise shift is applied to the incremented value. The permuted incremented value is then stored in the one or more memory locations.

主权项

1. A method of managing operation of rewritable memory used to store a monotonically increasing sequence of multiple-byte binary values in a set of one or more memory locations in the rewritable memory, the method comprising:
reading in a first value from the set of one or more memory locations; on detection of an instruction to store an incremented value:
permuting the incremented value by, in combination:
applying an encoding, in which a value of a least significant bit changes only on every second increment, to two least significant bits of the incremented value; andon overflow of a least significant byte as a result of the increment, applying a cyclic byte-wise shift to the incremented value; andstoring the permuted incremented value in the one or more memory locations.