Patent ID: 6115432
Filing Date: 2000-09-05
Classification: H03D,H03J,H04B,H04L

Abstract:
A high frequency signal receiving apparatus comprising:an input terminal for receiving a digital modulated high frequency signal,a mixer having one input supplied with the signal inputted to the input terminal and another input is coupled to an output of a first local oscillator,a demodulating section to which an output of said mixer is supplied,a second local oscillator coupled to the output of said mixer;a decoding section coupled to an output of said demodulating section,an output terminal coupled to an output of said decoding section,a PLL circuit coupled to said first local oscillator, anda microcomputer having a first group of input/output terminals coupled to i) a control terminal of said PLL circuit, ii) a control terminal of said demodulating section, iii) an output of said second local oscillator and iv) a control terminal of said decoding section, and a second group of input/output terminals coupled to outside equipment; whereinthe microcomputer i) is controlled by a first oscillation frequency generated by a fixed oscillation element and ii) controls at least one of said PLL circuit, said demodulating section and said decoding section based on i) a signal delivered from said outside equipment input through said second group of input/output terminals and ii) the output of said second local oscillator.