Patent ID: 7944511

Claim:
A front-end module for receiving analog and digital broadcast signals, comprising: frequency conversion means configured to convert an input BS/CS digital television broadcast RF signal into a BS/CS digital television broadcast baseband signal; digital satellite demodulation means configured to digitally demodulate said BS/CS digital television broadcast baseband signal; intermediate frequency conversion means configured to split an input terrestrial broadcasting RF signal into VHF, CATV, and UHF bands which are subjected to processes including tuning, amplification, and image cancellation, before converting the processed signal into a terrestrial broadcasting intermediate frequency signal; analog demodulation means configured to split said terrestrial broadcasting intermediate frequency signal into an analog audio signal and a analog video signal, before demodulating said analog audio signal and said analog video signal; digital terrestrial demodulation means configured to adjust levels of said terrestrial broadcasting intermediate frequency signal and to subject the level-adjusted signal to selective frequency band limitation, before digitally demodulating the frequency band-limited signal; filtering means configured to reduce harmonics in the demodulated signals output by said digital satellite demodulation means and said digital terrestrial demodulation means; and a grounding arrangement common to a digital and an analog circuit sections.