Patent ID: 8224374

Claim:
A wireless terminal device for (i) receiving a first radio signal relating to a first service which is a broadcasting service, and a second radio signal relating to a bidirectional communication service, the first radio signal representing a plurality of time-division multiplexed programs as well as periods during which the respective programs are represented, and (ii) performing reproduction of one of the programs selected by a user, and predetermined processing based on the second radio signal, the wireless terminal device comprising: a tuner unit operable to generate a first baseband signal and a second baseband signal one at a time according to a switching signal, the first baseband signal being generated by frequency converting the received first radio signal and the second baseband signal being generated by frequency converting the received second radio signal; a first baseband unit operable to demodulate the first baseband signal to a first data signal; a second baseband unit operable to demodulate the second baseband signal to a second data signal, and modulate a third data signal to a third baseband signal, the third data signal being transmission data relating to the bidirectional communication service; a switching unit operable to identify, with reference to the first data signal, a period during which the first radio signal representing the selected program is received, and control the tuner unit by outputting thereto the switching signal indicating a first period that includes the identified period, so that the tuner unit generates the first baseband signal during the first period and the second baseband signal during a second period that is a period other than the first period; a local oscillator operable to generate, according to the switching signal, a local signal at (i) a first frequency during the first period for use in the generation of the first baseband signal, (ii) a second frequency during the second period for use in the generation of the second baseband signal, and (iii) a third frequency during a transmission period of the bidirectional communication; and a transmitting unit operable to generate a third radio signal by frequency converting the third baseband signal using the local signal of the third frequency, and transmit the third radio signal, wherein the tuner unit generates, using the local signal, the first and second baseband signals by frequency converting the first and second radio signals, respectively, and the wireless terminal device reproduces the selected program from the first data signal, and conducts the predetermined processing using the second data signal.