Receiver capable of selectively receiving satellite broadcast TV signals and audio SCPC signals
First Claim
1. A receiver capable of selectively receiving satellite broadcast television signals of audio SCPC signals, comprising:
- RF reception means for receiving television signals and audio SCPC signals broadcast from a satellite;
frequency conversion means for converting an RF output from said RF reception means into an IF signal;
separation means for separating the output of said frequency conversion means into a television signal and an audio SCPC signal, and for producing a first output including the television signal and a second output including the audio SCPC signal;
a TV signal processing unit for receiving and processing the first output from said separation means;
an SCPC signal processing unit for receiving and processing the second output from said separation means; and
selection means for selecting any one of the outputs from said TV signal processing unit and said SCPC signal processing unit, thereby enabling selective reception of TV signals and audio SCPC signals broadcast from a satellite.
1 Assignment
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Accused Products
Abstract
A satellite broadcast receiver capable of receiving audio SCPC signals is disclosed in which the receiver comprises an RF reception unit for receiving television signals and audio SCPC signals broadcast from a satellite, frequency converter for converting an RF output from said RF reception unit into an IF signal, separator for separating the output of said frequency converter into a television signal and an audio SCPC signal, a TV signal processing unit for receiving and processing a first output from the separator, an SCPC signal processing unit for receiving and processing a second output from the separator, and a selector for selecting any one of the outputs from the TV signal processing unit and said SCPC signal processing unit, thereby enabling selective reception of TV signals and audio SCPC signals broadcast from a satellite. The RF reception unit comprises an RF amplifier, and the frequency converter comprises a feedback circuit for selectively feeding the first and the second outputs of the separator back to the RF amplifier, thereby controlling a gain of the RF amplifier. The TV signal processing unit includes a video detector for receiving and detecting a television signal from the separator, an audio circuit for receiving an audio signal from the video detector, and a video circuit for receiving a video signal from the video detector. The selector comprises a switch for selecting any one of the outputs of the SCPC signal processing unit and the audio circuit.
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Citations
12 Claims
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1. A receiver capable of selectively receiving satellite broadcast television signals of audio SCPC signals, comprising:
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RF reception means for receiving television signals and audio SCPC signals broadcast from a satellite; frequency conversion means for converting an RF output from said RF reception means into an IF signal; separation means for separating the output of said frequency conversion means into a television signal and an audio SCPC signal, and for producing a first output including the television signal and a second output including the audio SCPC signal; a TV signal processing unit for receiving and processing the first output from said separation means; an SCPC signal processing unit for receiving and processing the second output from said separation means; and selection means for selecting any one of the outputs from said TV signal processing unit and said SCPC signal processing unit, thereby enabling selective reception of TV signals and audio SCPC signals broadcast from a satellite. - View Dependent Claims (2, 3)
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4. A receiver capable of selectively receiving satellite broadcast television signals or audio SCPC signals, comprising:
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an IF unit for converting a signal including satellite broadcast signals or audio SCPC signals into an IF signal; separator means for receiving and separating the IF signal into a first output corresponding to an audio SCPC signal and a second output corresponding to a satellite broadcast signal; SCPC reception means connected to receive the first output of said separator means; video detector means connected to receive the second output of said separator means; audio signal processing means connected to receive an audio output of said video detector means; video signal processing means connected to receive a video output of said video detector means; audio signal switching means connected to outputs of said SCPC signal processing means and said audio signal processing means for selecting an audio signal produced by the SCPC reception means or an audio signal produced by the audio signal processing means. - View Dependent Claims (5, 6)
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7. A receiver capable of selectively receiving satellite broadcast television signals or audio SCPC signals, comprising:
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reception means for receiving television signals and audio SCPC signals broadcast from a satellite and producing an RF signal; RF amplification means for amplifying the RF signal from said reception means to produce an amplified RF signal; frequency conversion means for converting the amplified RF signal into an IF signal; separation means for separating the output of said frequency conversion means into a first output corresponding to a television signal and a second output corresponding to an audio SCPC signal; SCPC reception means connected to the first output of said separation means; video detector means connected to the second output of said separation means; audio signal processing means connected to receive the output of said video detector means; video signal processing means connected to receive the output of said video detector means; audio signal changeover means connected to said SCPC reception means and said audio signal processing means for selecting any one of the outputs of those means; and control means for controlling said SCPC reception means in response to information about a condition of receipt of the audio SCPC signal. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification