Patent ID: 7493096

Claim:
An apparatus for processing digital multimedia broadcast (DMB) signals received via two antennas comprising: a phase-shifting unit for phase-shifting one of two DMB signals received via the two antennas to output a first phase-shifted signal, wherein the other one of the two DMB signals is a first non-phase-shifted signal; an antenna switching unit for alternately switching the first phase-shifted signal and the first non-phase-shifted signal, to output a mixed signal; a DMB path unit for pre-processing the mixed signal; a port switching unit for alternately switching the pre-processed signal in a synchronous way with the antenna switching unit, to divide the pre-processed signal into a second phase-shifted signal and a second non-phase shifted signal; a phase-recovery unit for restoring the second phase-shifted signal to a third non-phase-shifted signal; and a DMB chipset unit for comparing a signal level of the second non-phase-shifted signal with that of the third non-phase-shifted signal, and simultaneously controlling the antenna switching unit and the port switching unit, wherein one of the two DMB signals received via the two antennas is stationarily selected to be received in the DMB chipset unit via the DMB path unit according to the result of the comparison of the DMB chipset unit, until a signal level of the stationarily-selected DMB signal is less than a predetermined reference level.