Television tuner for receiving multiple band television signals
First Claim
1. A television tuner for use in a television receiver to receive a VHF signal band, a UHF signal band, and a satellite signal band converted from a received satellite signal, all of which are provided as a combined signal by aan input means to receive the combined signal from the signal combiner;
- first oscillator having variable frequency;
first mixer means to receive the combined signal and the output of the first oscillator means to convert the combined signal into a first intermediate frequency signal if the VHF and UHF signals are to be utilized by the television receiver or a second intermediate frequency signal if the satellite signal is to be utilized by the television receiver;
first and second band-pass filter means connected to the first mixer means to receive first and second intermediate frequency signals, wherein the first band-pass filter means is designed to pass the first intermediate frequency signal and the second band-pass filter means is designed to pass the second intermediate frequency signal; and
means for processing the signals passed by the first and second band-pass filter means to provide a standard VHF and UHF television signals and a frequency modulated satellite signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A television tuner for use in a television receiver to receive a VHF band signal, a UHF band signal, and a satellite band signal converted from a received satellite signal, all of which are provided as a combined signal by a signal combiner. The television tuner includes an input terminal to receive the combined signal from the signal combiner, a first oscillator having a variable frequency, a first mixer to receive the combined signal and the output of the first oscillator to convert the combined signal into a first intermediate frequency signal if the VHF and UHF signals are to be utilized by the television receiver, or a second intermediate frequency signal if the satellite signal is to be utilized by the television receiver, first and second band-pass filters connected to the first mixer to receive first and second intermediate frequency signals, wherein the first band-pass filter is designed to pass the first intermediate frequency signal and the second band-pass filter is designed to pass the second intermediate frequency signal, and a processing circuit for processing the signals passed by the first and second band-pass filters to provide a standard VHF and UHF television signals and a frequency modulated satellite signal.
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Citations
7 Claims
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1. A television tuner for use in a television receiver to receive a VHF signal band, a UHF signal band, and a satellite signal band converted from a received satellite signal, all of which are provided as a combined signal by a
an input means to receive the combined signal from the signal combiner; -
first oscillator having variable frequency; first mixer means to receive the combined signal and the output of the first oscillator means to convert the combined signal into a first intermediate frequency signal if the VHF and UHF signals are to be utilized by the television receiver or a second intermediate frequency signal if the satellite signal is to be utilized by the television receiver; first and second band-pass filter means connected to the first mixer means to receive first and second intermediate frequency signals, wherein the first band-pass filter means is designed to pass the first intermediate frequency signal and the second band-pass filter means is designed to pass the second intermediate frequency signal; and means for processing the signals passed by the first and second band-pass filter means to provide a standard VHF and UHF television signals and a frequency modulated satellite signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A television tuner for use in a television receiver to receive multiple band television signals, all of which are provided as a combined signal by a signal combiner, comprising:
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an input means to receive the combined signal from the signal combiner; first oscillator means having a variable frequency; first mixer means to receive the combined signal and the output of the first oscillator means to convert the combined signal into a first intermediate frequency signal if a prescribed one of the band television signals to be utilized by the television receiver or a second intermediate frequency signal if another one of the band television signals is to be utilized by the television receiver; first and second band-pass filter means connected to the first mixer means to receive first and second intermediate frequency signals, wherein the first band-pass filter means is designed to pass the first intermediate frequency signal and the second band-pass filter means is designed to pass the second intermediate frequency signal; and means for processing the signals passed by the first and second band-pass filter means to provide standard television signals.
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Specification