Patent ID: 7236755

Claim:
A broadcast wave receiving apparatus, comprising: first and second tuning circuits each having a resonance frequency; first controlling means for controlling one of said first and second tuning circuits to ensure that said resonance frequency of one of said first and second tuning circuits is tuned to a specific frequency before allowing one of said first and second tuning circuits to detect a broadcast wave at said specific frequency; judging means for judging whether or not to receive said broadcast wave detected by one of said first and second tuning circuits on the basis of predetermined threshold information on said broadcast waves; and second controlling means for controlling the other of said first and second tuning circuits to ensure that said resonance frequency of the other of said first and second tuning circuits is tuned to said specific frequency before allowing the other of said first and second tuning circuits to produce a broadcast signal indicative of said broadcast wave detected by one of said first and second tuning circuits in response to the judgment of said judging means, wherein said first and second tuning circuits each includes electric field intensity detecting means for detecting said electric field intensity of said broadcast wave at said specific frequency, which further comprises electric field intensity judging means for judging whether or not said electric field intensity of said broadcast wave detected at said specific frequency by said electric field intensity detecting means of one of said first and second tuning circuits is smaller than a predetermined threshold level, and in which said second controlling means is adapted to control the other of said first and second tuning circuits to ensure that said resonance frequency of the other of said first and second tuning circuits is tuned to said specific frequency before allowing the other of said first and second tuning circuits to produce a broadcast signal indicative of said broadcast wave detected by one of said first and second tuning circuits under the condition that the judgment is made that said electric field intensity of said broadcast wave which is oscillated at said specific frequency is larger than said predetermined threshold level.