To uniquely fix an address for communication acquired by respective transmission apparatuses in a communication system where the plurality of transmission apparatus are respectively connected through an HDMI(R) interface to a reception apparatus.

In the initial state, the CEC control function of the HDMI interface of the entire system is invalidated. A TV receiver 10 validates the CEC control function of the entire system by the instruction of a user. At the time, recorders A, B, C and D start the acquisition processing of the address for the communication at different acquisition start timings determined corresponding to respective connection positions, and the recorders A, B and C acquire the different addresses for the communication. When the CEC control function of the entire system is invalidated and then validated again, the recorders A, B and C respectively acquire the same address for the communication as the one in the previous time.