Reduced power consumption
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Abstract
A radio frequency receiver for receiving supplementary data transmitted with a radio station signal. The supplementary data includes one or more information word fields containing supplementary data transmitted with the radio station signal. The receiver includes a host processor for processing the supplementary data; a supplementary data demodulator and decoder for demodulating and decoding a received radio signal to generate a stream of bits representing one or more information word fields; an information word type memory for storing one or more information word type fields; detection circuitry arranged to receive and compare the information word type field decoded by the supplementary data decoder with one or more information word type fields stored in the information word type memory, and to provide a matched condition signal in response to a match between one or more decoded information word type fields and one or more of the corresponding stored information word types fields. The receiver is arranged to, in response to the matched condition signal, cause the corresponding supplementary data to be processed by the host processor.
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Citations
69 Claims
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1-35. -35. (canceled)
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36. Device circuitry for providing first and second transmission functions, the device circuitry comprising radio frequency receiver circuitry to provide the first transmission function and telecommunications circuitry to provide the second transmission function,
the radio frequency receiver circuitry arranged to process broadcast transmission data received by the radio frequency receiver circuitry, and wherein the radio frequency receiver circuitry is arranged to have active and idle modes, the active mode enabling the processing of received broadcast transmission data, the telecommunications circuitry arranged to process telecommunications transmission data, and wherein the telecommunications circuitry is arranged to have active and idle modes, the active mode enabling the processing of telecommunications transmission data, the device circuitry further comprising power management circuitry arranged to move the radio frequency receiver circuitry from the idle state to the active state in correspondence with when the telecommunications circuitry is in the active mode.
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67. A method of managing device circuitry power consumption, the device circuitry for providing first and second transmission functions, the device circuitry comprising radio frequency receiver circuitry to provide the first transmission function and telecommunications circuitry to provide the second transmission function,
the radio frequency receiver circuitry arranged to process broadcast transmission data received by the radio frequency receiver circuitry, and wherein the radio frequency receiver circuitry is arranged to have active and idle modes, the active mode enabling the processing of received broadcast transmission data, the telecommunications circuitry arranged to process telecommunications transmission data, and wherein the telecommunications circuitry is arranged to have active and idle modes, the active mode enabling the processing of telecommunications transmission data, wherein the method comprises moving the radio frequency receiver circuitry from the idle state to the active state in correspondence with when the telecommunications circuitry is in the active mode.
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68. A radio frequency receiver for receiving supplementary data transmitted with a radio station signal, said supplementary data comprising one or more information word fields containing supplementary data transmitted with the radio station signal, said receiver comprising:
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a host processor for processing said supplementary data the host processor having an active state and an idle state;
a supplementary data demodulator and decoder for demodulating and decoding a received radio signal to generate a stream of bits representing one or more information word fields;
a information word type memory for storing one or more information word type fields;
detection circuitry arranged to receive and compare the information word type field decoded by the supplementary data decoder with one or more information word type fields stored in the information word type memory, and to provide a matched condition signal in response to a match between one or more decoded information word type fields and one or more of said corresponding stored information word types fields, and wherein the receiver is arranged to, in response to the matched condition signal, cause the host processor to move to the active state to process the corresponding supplementary data.
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69. A method for receiving supplementary data transmitted with a radio station signal, said supplementary data comprising one or more information word fields containing supplementary data transmitted with the radio station signal, said method comprising:
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processing said supplementary data by a processing means having an active state and an idle state;
demodulating and decoding a received radio signal to generate a stream of bits representing the one or more information word fields;
storing one or more information word type fields in an information word field store;
receiving and comparing the information word type field decoded by the decoder with one or more of the stored information word type fields, and in response to a match therebetween, causing the processing means to move to the active state to process the corresponding supplementary data.
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Specification