RADIO FREQUENCY MODULATION MODULE FOR DUAL MODULATION CHANNEL

摘要

An RF modulation module for a dual modulation channel is provided to transmit two satellite TV broadcasting signals, which are independently tuned, to a neighboring TV or a remote TV through different modulation channels in a TV STB(Set Top Box), thereby enabling the remote TV to directly control the modulation channel. An RF(Radio Frequency) modulation module for a dual modulation channel comprises the followings: the first modulator(100) which modulates an audio signal(A1) and a video signal(V1) of the first satellite TV broadcasting into the first satellite RF signal(RFS1) corresponding to the first modulation channel according to the first data(DA1) including the first modulation channel information; and the second modulator(200) which modulates an audio signal(A2) and a video signal(V2) of the second satellite TV broadcasting into the second satellite RF signal(RFS2) corresponding to the second modulation channel according to the second data(DA2) including the second modulation channel information.