Method for the correction of a bit in a string of bits
AssigneeSTMicroelectronics S.r.l.
InventorFrancesco La Rosa
Life of this patent
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Abstract
A method for the correction of an erroneous bit in a string of bits includes providing, in the string of bits, for a first parity bit computed from the other bits of the string of bits at a point in time when the erroneous bit was valid. The correct value of the erroneous bit is computed by using the other bits of the string of bits comprising the parity bit. The erroneous bit is then replaced by its correct value. The method is applicable to error correction circuits in EEPROM memories.
Claims13
A method for the correction of an erroneous bit in a string of bits, comprising a step of providing, in the string of bits, for a first parity bit computed from the other bits of the string of bits at a point in time when the erroneous bit was valid, the method further comprising:
- a step of computing a second parity bit as a function of all the bits of the string of bits other than the erroneous bit, and
- a step of replacing the erroneous bit by the second parity bit.
A non-volatile memory comprising remanent memory cells, means for the reading of a string of bits in the memory, and means for the correction of an erroneous bit present in a string of bits read in the memory, the correction means comprising means to compute a parity bit from the bits of the string of bits, wherein the correction means comprise means to replace an erroneous bit by the computed parity bit.
Dependencies are inferred from the claim text.