Abstract: Various kinds of broadcast TV signals can be watched on display devices at desirable places (rooms). High-frequency signals of CS broadcast, BS broadcast and terrestrial broadcast are received and inputted via a lead wire to a retransmission device. A high-frequency signal of a cable television broadcast is directly inputted to the retransmission device. The retransmission device subsequently converts high-frequency signals of incoming different broadcasts into common high-frequency signals and transmits them in time-series. Then, the common high-frequency signals are transmitted by wired or wireless means to a plurality of display devices that may be installed in different rooms or are portable.

Abstract: In the system, a home server collectively receives and demodulates signals of satellite broadcasts, TV broadcasts, CATV broadcasts and telecommunication data by its receiving and demodulating portion, and, upon receipt of a request from a user display device, selects a broadcasting channel and converts the channel signal into a common data signal by its digital signal processing portion. The home server decides an address of the display device and a transmission means, modulates the common data signal by its radio control portion and, then, transmits the signal through an aerial portion thereof to the display device. The video signal from the home server is received by the display device through its antenna, wherein the signal is demodulated by a radio control portion and transferred to a recognition portion for recognizing the address of the display device or signal conversion device for displaying the video signal.

Abstract: A system for viewing broadcasts from a plurality of different broadcasting companies at a plurality of desirable places can be easily constructed.

Abstract: Various kinds of broadcast TV signals can be watched on display devices at desirable places (rooms). High-frequency signals of CS broadcast, BS broadcast and terrestrial broadcast are received and inputted via a lead wire to a retransmission device. A high-frequency signal of a cable television broadcast is directly inputted to the retransmission device. The retransmission device subsequently converts high-frequency signals of incoming different broadcasts into common high-frequency signals and transmits them in time-series. Then, the common high-frequency signals are transmitted by wired or wireless means to a plurality of display devices that may be installed in different rooms or are portable.