Patent ID: 6762788
Filing Date: 2004-07-13
Classification: H04N

Abstract:
A wireless video/audio transmission device for bi-directional communications, comprising:an emitting device comprising a first channel emitting module and a second channel receiving module, a first channel modulator being disposed in said first channel emitting module, said first channel modulator simultaneously modulating a video signal, a first audio signal, and a first control signal generated according to a first digital control instruction into a first carrier signal, which is emitted out by a first channel emission antenna, a second channel demodulator being disposed in said second channel receiving module; and a receiving device comprising a first channel receiving module and a second channel emitting module, said first channel receiving module being connected to a first channel reception antenna, a first channel demodulator being disposed in said first channel receiving module, said first channel demodulator demodulating said first carrier signal received by said first channel reception antenna back into said video signal, said first audio signal, and said first control signal, a first output instruction being outputted according to said first control signal, a second channel modulator being disposed in said second channel emitting module and used to mix and modulate a second control signal generated according to a second digital control instruction and a received second audio signal into a second carrier signal, which is emitted out by a second channel emission antenna to said second channel receiving module so that said second channel demodulator can demodulate said second carrier signal back into said second control signal and said second audio signal, a second output instruction being outputted according to said second control signal.