Patent ID: 8667228

Claim:
A memory system that is connectable to another apparatus via a data crossbar and that stores data, the memory system comprising: a first memory that stores data; a second memory that forms a dual configuration together with the first memory and that stores data; a first memory controller that writes data into or reads out data from the first memory, that is connected to another apparatus via a first data crossbar, and that transmits or receives data to be written into the first memory or data read out from the first memory to or from the other apparatus; a second memory controller that writes data into or reads out data from the second memory, that is connected to the other apparatus via a second data crossbar, and that transmits or receives data to be written into the second memory or data read out from the second memory to or from the other apparatus; and a system controller that detects transmission or reception of data performed via the first data crossbar and the second data crossbar, that instructs the first memory controller and the second memory controller to read out, from the first memory and the second memory, data requested to be read out by the other apparatus if the system controller detects that any one of the first data crossbar and the second data crossbar being not capable of transmitting or receiving data, that performs error detection on data read out by the first memory controller and the second memory controller, and that outputs data in which no error has been detected or data in which an error has been corrected.