Patent ID: 8340709

Claim:
A sink-side wireless communication device being wiredly connectable with a sink-side wired communication device and wirelessly communicable with a source-side wireless communication device that is wiredly connectable with a source-side wired communication device, the sink-side wireless communication device comprising: a memory; a cable port; an acquisition module configured to acquire display device identification information from an external device that is connected to the cable port through a cable, the display device identification information being compatible with a communication method using the cable; a determination module configured to determine whether the external device is the source-side wireless communication device or not based on the acquired display device identification information; an authentication module configured to perform, when the determination module determines that the external device is the source-side wireless communication device, an authentication process with the source-side wireless communication device being wiredly connected and to then store authentication information acquired though the authentication process into the memory; and a wireless communication module configured to perform a wireless communication with the source-side wireless communication device being wiredly connected with the source-side wired communication device, in a state where the sink-side wired communication device is wiredly connected to the cable port, based on the authentication information stored in the memory.