Communication control device and communication control method in audio visual device system, and television receiver

A communication control method in an audio visual device system, the system being arranged such that logical addresses according to device types are allocated to connected audio visual devices, an upper limit is set to the number of allocatable logical addresses of each of the device types, and when audio visual devices whose number exceeds the upper limit are connected, logical addresses according to the device types are not allocated thereto, the communication control method comprising:

• a device detection step of detecting the audio visual devices which have not acquired logical addresses according to the device types of a plurality of audio visual devices connected to the audio visual device system;
• a disconnection detection step of detecting that an audio visual device is disconnected from the audio visual device system;
• and
• a control step of performing control for causing the audio visual device which is detected in the device detection step and has not acquired a logical address according to the device type, to acquire the logical address according to the device type, when disconnection of an audio visual device is detected in the disconnection detection step.