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US 11,659,329 B2Granted
Efficient seamless switching of sigma-delta modulators
AssigneeInfineon Technologies AG
InventorDietmar Straeussnigg
Life of this patent
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Abstract
A digital microphone includes at least one integrator; a state detection and parameter control component directly coupled to an output of the integrator; and a signal processing component coupled to an output of the state detection and parameter control component, wherein a parameter of the signal processing component includes a first value in a first operational mode and a second value in a second operational mode different from the first operational mode.
Claims13
A digital microphone comprising:
- at least one integrator;
- a state detection and parameter control component directly coupled to an output of the integrator;
- and
- a signal processing component coupled to an output of the state detection and parameter control component, wherein a parameter of the signal processing component comprises a first value in a first operational mode and a second value in a second operational mode different from the first operational mode,
- wherein the state detection and parameter control component comprises first and second thresholds, and wherein the signal processing component comprises a variable gain component that is configured for changing gain values when the output of the integrator is between the first and second thresholds.
2 more elements
A method of operating a digital microphone, the method comprising:
- monitoring a state of an integrator of the digital microphone;
- generating an output signal having a first level during a first state of the integrator and a second level during a second state of the integrator;
- controlling a parameter value of a signal processing component of the digital microphone with the output signal;
- and
- changing an operational mode of the digital microphone only during the first state of the integrator.
2 more elements
A digital microphone comprising:
- at least one integrator;
- a state detection and parameter control component directly coupled to an output of the integrator;
- and
- a signal processing component coupled to an output of the state detection and parameter control component, wherein a parameter of the signal processing component comprises a first value in a first operational mode and a second value in a second operational mode different from the first operational mode,
- wherein the state detection and parameter control component is configured for generating a first output signal value if a state of the integrator is between a first threshold and a second threshold, and for generating a second output signal value if the state of the integrator is not between the first threshold and the second threshold.
2 more elements
Dependencies are inferred from the claim text.