Invention Grant
US07990479B2 Communication system and communication method 有权
通信系统和通信方法

Communication system and communication method
Abstract:
A transmitting device transmits a video signal and an audio signal based on a television broadcasting signal, or a still picture signal and a silence signal as a transmission signal to a receiving device. The receiving device supplies the video signal and the audio signal transmitted from the transmitting device, or a video signal and an audio signal inputted from external equipment to a video and audio output unit. In the receiving device, when the video signal and the audio signal inputted from the external equipment have been supplied to the video and audio output unit, the still picture signal and the silence signal are transmitted from the transmitting device to the receiving device.
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