Patent ID: 7990479

Claim:
A communication system that receives a broadcasting signal, and to which an external device can be connected, said communication system comprising a transmitting device and a receiving device, wherein said transmitting device includes: a receiver that receives said broadcasting signal; a first communicator that transmits said broadcasting signal received by said receiver to said receiving device; a first controller that controls the transmission of said broadcasting signal to said receiving device; a still picture generator that generates a still picture signal; and a second selector that selectively outputs said broadcasting signal from said receiver and said still picture signal from said still picture generator to said first communicator, said receiving device includes: a second communicator that receives said broadcasting signal transmitted from said transmitting device; an acquirer that acquires an external signal from said external device; and a first selector that selectively outputs the broadcasting signal from said second communicator and the external signal from said acquirer, wherein said first controller controls the transmission of said broadcasting signal so that an amount of said broadcasting signal at the time of output of said external signal by said first selector is smaller than an amount of said broadcasting signal at the time of output of said broadcasting signal by said first selector, said first controller outputs said still picture signal by said second selector when said external signal is outputted by said first selector, and said first communicator transmits said still picture signal outputted by said second selector to said receiving device.