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US 8,526,897 B2Granted
Controlling power consumption in a radio tuner
AssigneeSilicon Laboratories Inc.
InventorMatthew Henson
Life of this patent
Estimating the term…
Abstract
According to one aspect of the present invention, a controller is coupled to at least first and second signal processors (at least one of which includes analog demodulation circuitry and another of which includes digital demodulation circuitry). The controller may operate to disable the first signal processor responsive to a control signal that indicates that a second signal (corresponding to a demodulator output) is available from the second signal processor.
Claims10
An apparatus comprising:
- an analog demodulator to receive a first downconverted signal obtained from a radio frequency (RF) signal and to process the first downconverted signal to output a first signal obtained from analog encoded content of the RF signal;
- a blending circuit to blend the first signal and a second signal, the second signal received from a digital demodulator, the second signal obtained from digitally encoded content of the RF signal;
- and
- a controller to disable the analog demodulator responsive to the digital demodulator indicating that the second signal is available from the digital demodulator.
1 more element
A method comprising:
- receiving a blend control signal in a controller, the blend control signal to indicate that a limited number of valid demodulated samples from a digital demodulator that demodulates digitally encoded content in a radio frequency (RF) signal remain in a buffer;
- initializing an analog demodulator that demodulates analog encoded content in the RF signal responsive to the blend control signal;
- demodulating a downconverted signal obtained from the RF signal in the analog demodulator to generate an analog demodulated output;
- after the initialization and demodulating, blending the analog demodulated signal and at least some of the limited number of valid demodulated samples in a blending circuit to generate a blended output;
- and providing the blended output to an audio processor coupled to the blending circuit.
2 more elements
Dependencies are inferred from the claim text.