Patent attributes
A correctable parity-protected memory system may include a parity-protected memory configured to hold dirty data, an error correction register configured to hold data, an exclusive-OR (XOR) circuit configured to exclusive-OR dirty data that is written into and removed from the parity-protected memory with the data in the error-correction register, and a controller. The controller may be configured to cause the results of the XOR circuit to accumulate in the error-correction register each time dirty data is written into and removed from the parity-protected memory, and, in response to detection of a fault in dirty data in the parity-protected memory, correct the fault based on the data in the error-correction register and dirty data in the parity-protected memory.
