VEHICLE TELEMATICS SATELLITE DATA TRANSCEIVER UTILIZING FM RADIO CIRCUITRY
First Claim
1. A transceiver for transmitting and receiving RF signals, comprising:
- first RF front-end receiver circuitry comprising FM mixer circuitry capable of receiving standard FM radio broadcast RF signals and converting the FM radio broadcast RF signals to an intermediate frequency, said first RF front-end receiver circuitry being configured to receive RF data signals at frequencies greater than 108 MHz and convert the RF data signals to intermediate frequency (IF) data signals;
signal processing circuitry coupled to said first RF front-end receiver circuitry, said signal processing circuitry comprising at least one DSP core configured to receive the IF data signals from said first RF front-end receiver circuitry and demodulate the IF data signals to extract data, said at least one DSP core also being configured to modulate data to be transmitted into modulated transmit data signals, said signal processing circuitry further comprising at least one audio output configured to provide at least one of digital and analog audio output; and
RF transmitter circuitry coupled to said signal processing circuitry and comprising a mixer, an RF power amplifier, and at least one filter, wherein said RF transmitter circuitry is configured to receive the modulated transmit data signals from said processing circuitry, convert the modulated data signals in the mixer into modulated data signals having a frequency greater than 108 MHz, amplify and filter the converted modulated transmit data signals, and transmit the filtered and amplified modulated data transmit signals.
1 Assignment
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Accused Products
Abstract
A transceiver for transmitting and receiving satellite RF signals is provided. The transceiver includes RF front-end receiver circuitry capable of receiving FM radio broadcast RF signals and converting the FM radio broadcast RF signals to an intermediate frequency. The RF front-end receiver circuitry is configured to receive RF signals at greater than 108 MHz and convert the RF signals to an intermediate frequency. The transceiver also includes signal processing circuitry including at least one DSP core for demodulating intermediate frequency signals provided by the front-end circuitry and for modulating data to be transmitted into baseband modulated data signals, and at least one audio output. The transceiver further includes RF transmitter circuitry configured to convert the baseband modulated data signals provided by the at least one DSP core into modulated transmit signals having a frequency greater than 108 MHz for transmission and transmit the modulated transmit signals.
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Citations
23 Claims
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1. A transceiver for transmitting and receiving RF signals, comprising:
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first RF front-end receiver circuitry comprising FM mixer circuitry capable of receiving standard FM radio broadcast RF signals and converting the FM radio broadcast RF signals to an intermediate frequency, said first RF front-end receiver circuitry being configured to receive RF data signals at frequencies greater than 108 MHz and convert the RF data signals to intermediate frequency (IF) data signals; signal processing circuitry coupled to said first RF front-end receiver circuitry, said signal processing circuitry comprising at least one DSP core configured to receive the IF data signals from said first RF front-end receiver circuitry and demodulate the IF data signals to extract data, said at least one DSP core also being configured to modulate data to be transmitted into modulated transmit data signals, said signal processing circuitry further comprising at least one audio output configured to provide at least one of digital and analog audio output; and RF transmitter circuitry coupled to said signal processing circuitry and comprising a mixer, an RF power amplifier, and at least one filter, wherein said RF transmitter circuitry is configured to receive the modulated transmit data signals from said processing circuitry, convert the modulated data signals in the mixer into modulated data signals having a frequency greater than 108 MHz, amplify and filter the converted modulated transmit data signals, and transmit the filtered and amplified modulated data transmit signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A transceiver for transmitting and receiving satellite RF signals, comprising:
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first RF front-end receiver circuitry configured to receive RF data signals at frequencies greater than 108 MHz and convert the RF data signals to data signals at an intermediate frequency; second RF front-end receiver circuitry comprising FM mixer circuitry configured to receive FM radio Broadcast RF signals and convert the FM radio Broadcast RF signals to FM radio Broadcast signals at an intermediate frequency; signal processing circuitry coupled to said first and second RF front-end receiver circuitry, said signal processing circuitry comprising at least one DSP core configured to receive the data signals at an intermediate frequency from said first RF front-end receiver circuitry and demodulate the data signals to extract data, said at least one DSP core being configured to modulate data to be transmitted into modulated transmit data signals at an intermediate frequency range, at least one audio output configured to provide at least one of an analog and digital audio signal, and at least one DSP core configured to receive the FM RF radio signals at an intermediate frequency range from said second RF front-end receiver circuitry, demodulate the signals into audio signals, and provide the audio signals to the at least one audio output; and RF transmitter circuitry coupled to said signal processing circuitry, said RF transmitter circuitry being configured to receive the modulated transmit data signals in an intermediate frequency range from said signal processing circuitry, convert the modulated data signals into modulated data signals having a frequency greater than about 108 MHz, amplify and filter the converted modulated data signals, and transmit the filtered and amplified data signals as an output. - View Dependent Claims (21, 22)
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23. A transceiver for transmitting and receiving satellite RF signals, comprising:
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first RF front-end receiver circuitry configured to receive RF data signals at frequencies greater than about 108 MHz and convert the RF data signals to an intermediate frequency; second RF front-end receiver circuitry comprising FM mixer circuitry configured to receive FM radio Broadcast RF signals and convert the FM radio Broadcast RF signals to an intermediate frequency; signal processing circuitry coupled to said first and second RF front-end receiver circuitry, said signal processing circuitry comprising at least one DSP core configured to receive the data signals at an intermediate frequency from said first RF front-end receiver circuitry and demodulate the data signals to extract data, said at least one DSP core being configured to modulate data to be transmitted into modulated transmit data signals, at least one audio output configured to provide at least one of an analog and digital audio signal, and at least one DSP core configured to receive FM radio Broadcast signals at an intermediate frequency range from said second RF front-end, demodulate the FM radio Broadcast signals into audio signals, and provide the audio signals to the at least one audio output; RF transmitter circuitry coupled to said signal processing circuitry, said RF transmitter circuitry being configured to receive from said signal processing circuitry the modulated transmit data signals, convert the modulated transmit data signals into modulated data signals having a frequency greater than about 108 MHz, amplify and filter the converted modulated transmit data signals, and transmit the filtered and amplified transmit data signals; an antenna diplexer coupled to an antenna and said second RF front-end receiver circuitry, said antenna configured to transmit and receive RF signals, and said antenna power diplexer configured to couple said antenna to at least one device in addition to said second RF front-end receiver circuitry; and a transmit/receive switch coupled to said first RF front-end receiver circuitry, said RF transmitter circuitry, said signal processing circuitry and said antenna diplexer, wherein said transmit/receive switch switches between coupling said first RF front-end receiver circuitry and said RF transmitter to said antenna diplexer based on signals received from said signal processing circuitry.
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Specification