Patent ID: 11869615
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  Y | IPC G

Claim 8:
9. The method for reading and writing according to claim 3, wherein after the applying a read command to the memory device, and before the reading data to be read out from a memory cell corresponding to the address information pointed to by the read command, the method further comprises:
determining whether the address information pointed to by the read command is valid;
performing a read operation on the memory cell corresponding to the address information pointed to by the read command if the address information pointed to by the read command is valid; and
stopping performing the read operation on the memory cell corresponding to the address information pointed to by the read command if a mark of the address information pointed to by the read command is invalid, and performing the read operation on the spare memory cell identified by the identification code corresponding to the address information pointed to by the read command.