DATA TRANSMISSION DEVICE, DATA TRANSMISSION SYSTEM, AND METHOD

摘要

A data transmission device (1) comprises a controller (2), a receiver (5), a transmitter (6), and an MPU (3). The receiver (5) receives an electrical signal from a device in the preceding stage and outputs the data to the controller (2). The transmitter (6) converts the result of the processing by the controller (2) to an electrical signal and sends it to a device in the succeeding stage. The MPU (3) controls the operation of the controller (2), the receiver (5), and the transmitter (6) according to the operation mode of the device. The receiver (5) detects the stop of the electrical signal from the device in the preceding stage and, upon detection, stops its operation. The transmitter (6) stops its operation in response to the detection and stops the transmission of the electrical signal to the device in the succeeding stage.