Automatic gain control with out of band blocking signal compensation
AssigneeStarkey Laboratories, Inc.
InventorJeffrey Paul Solum
Life of this patent
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Abstract
One embodiment of the present subject matter includes a method of receiving an input signal. The method, in various embodiments, includes detecting a peak of the input signal and detecting an envelope of the input signal. In various embodiments, the peak and envelope are used to identify out-of-band blocking signals and to adjust gain control. The method also includes comparing the peak to a first threshold Tp and comparing the envelope to a second threshold Te. In the method, if the peak is above the first threshold and the envelope is below the second threshold, then ignoring the input signal. If the envelope is above the second threshold, the method includes applying automatic gain control to decode information encoded in the input signal.
Claims30
A method of receiving an input signal using a receiver, comprising:
- detecting a peak of the input signal;
- detecting an envelope of the input signal;
- comparing the peak to a first threshold Tp;
- comparing the envelope to a second threshold Te;
- and
- if the peak is above the first threshold and the envelope is below the second threshold, then deeming the input signal to be affected by an out-of-band blocking signal and entering the receiver into a low power consumption state.
A method of receiving an input signal with a receiver, comprising:
- detecting a peak of the input signal;
- detecting an envelope of the input signal;
- comparing the peak to a first threshold Tp;
- comparing the envelope to a second threshold Te;
- and
- if the peak is above the first threshold and the envelope is below the second threshold, then ignoring the input signal and entering the receiver into a low power consumption state.
An apparatus, comprising:
- a receiver, including
- a receiver front end;
- a receiver intermediate frequency stage;
- a peak detector adapted to receive signals from the receiver front end;
- and
- an envelope detector adapted to receive signals from the receiver intermediate frequency stage,
- wherein the receiver is adapted to recognize an out of band blocking signal based on outputs from the peak detector and the envelope detector, and wherein the receiver is adapted to enter a low power consumption state upon recognition of the out of band blocking signal.
An apparatus, comprising:
- a receiver, including:
- a receiver front end;
- a peak detector adapted to receive signals from the receiver front end;
- a filter stage following the receiver front end;
- and
- an envelope detector adapted to receive signals from the filter stage,
- wherein the receiver is adapted to recognize an out of band blocking signal based on outputs from the peak detector and the envelope detector, and
- wherein the receiver is adapted to enter a low power consumption state upon recognition of the out of band blocking signal.
Dependencies are inferred from the claim text.