Patent ID: 6970523

Claim:
In a diversity receiver having first and second channels with respective first and second tuners, each of said first and second tuners having a respective tuner output terminal, said first tuner further having a first AGC control input terminal, and said second tuner further having a second AGC control input terminal, said diversity receiver including a joint AGC circuit shared between said first and second tuners, said joint AGC circuit comprising: a first signal level sensing circuit coupled to receive the signal output from said first tuner at the output terminal of said first tuner; a second signal level sensing circuit coupled to receive the signal output from said second tuner at the output terminal of said second tuner; a first AGC circuit coupled to said first and second signal level sensing circuits and to said first AGC control input terminal, said first AGC circuit being responsive to said first and second signal level sensing circuits to generate a first AGC control signal at the first AGC control input terminal of said first tuner, wherein said joint AGC circuit further comprises: a second AGC circuit coupled to said first and second signal level sensing circuits and to said second AGC control input terminal, said second AGC circuit being responsive to said first and second signal level sensing circuits to generate a second AGC control signal at the second AGC control input terminal of said second tuner, wherein said joint AGC circuit limits the maximum difference between said first AGC control signal at the first AGC control input terminal of said first tuner, and said second AGC control signal at the second AGC control input terminal of said second tuner, to a predetermined maximum difference.