Using a first IF of 43.5 MHZ or less in an FM radio in a television tuner

Claim 2

A television receiver, comprising: tuner means for operating in a first mode for receiving television RF signals, said tuner means selecting a particular television RF signal from a plurality of television RF signals in response to a control signal; control means for generating said control signal for causing said tuner means to select said particular RF signal; said tuner means also operating in a second mode as a first frequency conversion stage for a double conversion broadcast FM radio signal receiver, for receiving broadcast FM radio RF signals, said tuner means selecting a particular broadcast FM radio RF signal from a plurality of broadcast FM radio RF signals in response to said control signal for converting said broadcast FM radio RF signal to a first intermediate frequency; a second frequency conversion stage of said double conversion broadcast FM radio signal receiver, said second frequency conversion stage receiving said broadcast FM radio signal at said first intermediate frequency and converting said broadcast FM radio signal to a second intermediate frequency; and means for demodulating audio signals from said broadcast FM radio signal at said second intermediate frequency; and wherein said first intermediate frequency is 43.3 MHz.

Claim 3

A television receiver, comprising: tuner means for operating in a first mode for receiving television RF signals, said tuner means selecting a particular television RF signal from a plurality of television RF signals in response to a control signal; control means for generating said control signal for causing said tuner means to select said particular RF signal; said tuner means also operating in a second mode as a first frequency conversion stage for a double conversion broadcast FM radio signal receiver, for receiving broadcast FM radio RF signals, said tuner means selecting a particular broadcast FM radio RF signal from a plurality of broadcast FM radio RF signals in response to said control signal, for converting said broadcast FM radio RF signal to a first intermediate frequency; a second frequency conversion stage of said double conversion broadcast FM radio signal receiver, said second frequency conversion stage receiving said broadcast FM radio signal at said first intermediate frequency and converting said broadcast FM radio signal to a second intermediate frequency; and means for demodulating audio signals from said broadcast FM radio signal at said second intermediate frequency; and wherein said first intermediate frequency is less than or equal to 43.5 MHz and greater than 42.17 MHz.

Claim 4

A television receiver, comprising: tuner means for operating in a first mode for receiving television RF signals, said tuner means selecting a particular television RF signal from a plurality of television RF signals in response to a control signal; control means for generating said control signal for causing said tuner means to select said particular RF signal; said tuner means also operating in a second mode as a first frequency conversion stage for a double conversion broadcast FM radio signal receiver, for receiving broadcast FM radio RF signals, said tuner means selecting a particular broadcast FM radio RF signal from a plurality of broadcast FM radio RF signals in response to said control signal, for converting said broadcast FM radio RF signal to a first intermediate frequency; a second frequency conversion stage of said double conversion broadcast FM radio signal receiver, said second frequency conversion stage receiving said broadcast FM radio signal at said first intermediate frequency and converting said broadcast FM radio signal to a second intermediate frequency; and means for demodulating audio signals from said broadcast FM radio signal at said second intermediate frequency; and wherein said first intermediate frequency is less than or equal to 43.5 MHz and greater than 42.17 MHz.