| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique that calculates the communication quality of a communication path to communicate with another electronic control device in consideration of functions of a signal shaper.SOLUTION: When a channel of an electronic control device receives a signal transmitted by another electronic control device from a communication path (S400), an ADC performs AD conversion of the signal received by the channel (S402). An equalizer shapes the reception signal after the AD conversion (S404), and calculates an estimation value of a bit error rate (BER) on the basis of the degree of shaping to shape the reception signal (S406). If the estimation value of the BER is less than a prescribed value, and the communication quality of the communication path satisfies prescribed quality (S408: No), the electronic control device does not switch a transmission channel to transmit data to the other electronic control device that transmitted the reception signal. If the estimation value of the BER is equal to or more than the prescribed value, and the communication quality of the communication path does not satisfy the prescribed quality (S408: Yes), the electronic control device switches the transmission channel to transmit data to the other electronic control device that transmitted the reception signal to another channel (S410).SELECTED DRAWING: Figure 2 |
