Patent ID: 8055953

Claim:
An information processing system composed of plural information processing units for mutually executing data communication, and for executing data processing in which communication data has been applied, the information processing system comprising: a first information processing unit for transmitting an error notification data, on the basis of a detection of data processing error or a detection of data reception error, and executing an initial state return processing on a condition that data reception is made after the error notification data has been transmitted; and a second information processing unit for transmitting error notification data, on the basis of the detection of data processing error or the detection of data reception error, and executing the initial state return processing on the condition that a transmit processing of the error notification data has been executed, wherein the first information processing unit and the second information processing unit realize synchronization of an internal state, for both the first information processing unit and the second information processing unit, after executing the initial state return processing.