ERROR DETECTION IN AUTOMOBILE TELL-TALES

摘要

Systems and method for error detection in automobile tell-tales are provided. An initial cyclic redundancy check (CRC) for a tell-tale to be calculated and stored at a primary control system within the vehicle. When a fault or condition is detected which generates the tell-tale, the primary control system passes video information to a display embedded control unit (ECU) along with the initial CRC. A circuit in the display ECU performs its own CRC calculation and compares the initial CRC to the calculated CRC. If there is not a match, then a fault indication may be provided to the primary control system for action by the primary control system. Still further, back up or fail-operational options may be invoked so that the tell-tale is provided to the operator.