| 摘要 |
PROBLEM TO BE SOLVED: To view analog terrestrial TV broadcasting and digital terrestrial TV broadcasting, and to miniaturize a high frequency signal receiving device. SOLUTION: A reference frequency signal generator 223 generates a reference frequency signal and supplies it to a high frequency signal processor 221 and a digital demodulator 226. The high frequency signal processor 221 obtains the signal of a desired channel with the use of the reference frequency signal from a high frequency signal which is obtained by receiving broadcasting wave. An analog demodulator 225 performs the analog demodulation processing of the signal which is obtained by the high frequency signal processor 221. The digital demodulator 226 performs the digital demodulation processing of the signal which is obtained by the high frequency signal processor 221 with the use of the reference frequency signal. Consequently, the analog terrestrial TV broadcasting and the digital terrestrial TV broadcasting are viewed. The device is miniaturized without arranging a circuit to generate the reference frequency signal in the high frequency signal processor 221 and the digital demodulator 226. COPYRIGHT: (C)2006,JPO&NCIPI |
