Patent ID: 7310746
Filing Date: 2007-12-18
Classification: H04L

Abstract:
1. A method of transmitting messages between a plurality of bus users, each of which is connected with a communication bus for exchanging messages, the method comprising the acts of: conducting a message transmission from a first bus user to a second bus user in a normal operation mode; and for diagnosing the message transmission, operating in a diagnostic operating mode that differs from the normal operation mode and includes the acts of: requesting, by a diagnostic device uninvolved in the message transmission during the normal operation mode, the second bus user to output on the communication bus the message transmission; detecting a disturbance when the diagnostic device does not receive the message transmission or receives a damaged message transmission from the second bus user via the communication bus; and determining, by the diagnostic device, whether a source of the disturbance is in the first bus user or in the second bus user.