Methods And Systems For Blending Between Analog And Digital Broadcast Signals
AssigneeSilicon Laboratories Inc.
InventorJavier Elenes
Life of this patent
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Abstract
Systems and methods are disclosed that may be implemented to process a received RF spectrum that includes both analog modulated and digitally modulated RF signals to blend between a digital demodulated signal and an analog demodulated signal obtained from the received RF spectrum prior to performing one or more signal quality mitigation operations on the blended signal (e.g., such as stereo blend, hi-cut, etc.). In one embodiment, the digital demodulated signal and the analog demodulated signal may include at least some of the same information, e.g., such as information from simulcast digital and analog channels that are obtained from the same received RF spectrum.
Claims20
A method for processing signals, comprising:
- performing a digital/analog blending operation between a digital demodulated signal obtained from a digital modulated signal contained in a received radio frequency (RF) spectrum and an analog demodulated signal obtained from an analog modulated signal contained in the same received RF spectrum to produce a post-blend demodulated signal;
- and
- then performing one or more signal quality mitigation operations on the post-blend demodulated signal.
A system, comprising:
- digital/analog signal blend circuitry comprising:
- a first input to receive a digital demodulated signal obtained from a digital modulated signal contained in a received radio frequency (RF) spectrum,
- a second input to receive an analog demodulated signal obtained from an analog modulated signal contained in the same received RF spectrum, and
- an output to provide a post-blend demodulated signal, the digital/analog signal blend circuitry being configured to perform a digital/analog blending operation between the digital demodulated signal and the analog demodulated signal to produce a post-blend demodulated signal;
- and
- signal quality mitigation circuitry having an input coupled to the output of the digital/analog signal blend circuitry, the signal quality mitigation circuitry being configured to perform one or more signal quality mitigation operations on the post-blend demodulated signal to produce a mitigated output signal from the signal quality mitigation circuitry.
Dependencies are inferred from the claim text.