Bidirectional electronic bus communication circuits for use in vehicle control devices, have serial data transmission units where two or more alternative hardware data backup units are provided

摘要

The bidirectional electronic bus communication circuits (101,102,103) have serial data transmission units. Data backup units are provided near the data transmission units, with which, during transmission, test data are made for the transmission data and are transmitted with the data. Two or more alternative hardware data backup units are provided, which prepare different backup methods for data backup on the bus.