Carrier reset device

The invention relates to device for recovering carrier wave of digital TV set in VSB mode, spatially, recovering carrier wave is carried out under case that base band Q signal in path low pass filter is divided to base band I signal. Thus, even if linear noise (Ghost) exists in received signal, Q signal passing through low pass filter being near to zero, phase lock up can well be carried on. In addition, when output of divider is multiplied by gain, gradient of S curve is similar to the case, where there is no ghost echo. Thus, there is large ghost echo in transmission channel and pilot signal becomes small, but the disclosed device carries out recovering carrier wave correctly.