Patent ID: 7894863

Claim:
A communication apparatus, comprising: a communication processing section configured to perform wireless communication of a stream signal over a stream line with another communication apparatus; a signal input section configured to input the stream signal outputted from a connected signal output apparatus; a voltage detection section configured to detect a voltage of the signal output apparatus; a command output section configured to output a command signal to the signal output apparatus; and a control section configured to perform a streaming process of transmitting the stream signal inputted from the signal output apparatus via said signal input section to the other communication apparatus over the stream line, and also determine whether or not to transmit the command signal via said command output section based on the voltage detected by said voltage detection section and a content of the command signal to be transmitted when an occasion to transmit the command signal to the signal output apparatus via said command output section arises, wherein the voltage detected by said voltage detection section is a voltage at a power supply terminal of the signal output apparatus, the power supply terminal being used to supply power to an external device other than the communication apparatus.