COMMUNICATION SYSTEM, TRANSMITTING DEVICE, RECEIVING DEVICE, COMMUNICATION METHOD, PROGRAM AND COMMUNICATION CABLE

摘要

A communication system, a transmitting device, a receiving device, a communication method, a program, and a communication cable are provided for making it possible to carry out high speed interactive communication with compatibility maintained. When an HDMI(R) source (71) and an HDMI(R) sink (71) carry out interactive IP communication through a CEC line (84) and a signal line (141), a changeover control unit (121) controls a switch (133) to select a partial signal composing a differential signal from a converting unit (131) at a data transmitting time and to select a partial signal composing a differential signal from a receiver (82) at a data transmitting time and, when the interactive communication is carried out only through the CEC line (84), the changeover control unit (121) controls a switch (133) to select a CEC signal from the HDMI(R) source (71) or the receiver (82). The present invention can be applied to an HDMI(R), for example.