Patent ID: 6011597
Filing Date: 2000-01-04
Classification: H04N

Abstract:
A signal receiving apparatus comprising:a receiver antenna for receiving a plurality of high-frequency signals;a plurality of first frequency converters each for converting the frequency of a corresponding one of said high-frequency signals into a predetermined lower frequency;a plurality of second frequency converters each for further converting said predetermined lower frequency of said corresponding signal, which is converted by the corresponding first frequency converter;a frequency control information storage section for storing frequency control information, which is to be used for the frequency conversion by said second frequency converters;a frequency-conversion control section for automatically controlling the frequency conversion by said second frequency converters based on said frequency control information stored in said frequency control information storage section; andat least one receiver for receiving only a signal of a desired frequency among the signals whose frequencies are converted by said second frequency converters;each said second frequency converter including a variable oscillator for generating a variable frequency signal under control by said frequency-conversion control section, and a frequency converter for further converting said resultant signal, which is the output of said first frequency converter, using said variable frequency signal generated by said variable oscillator.