System and method of mitigating electromagnetic interference (EMI) in modulated light detection systems
AssigneeAttollo Engineering, LLC
InventorsJonathan Geske, Andrew Hood
Life of this patent
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Abstract
A modulated light receiver includes a photo-sensitive element, an electromagnetic interference (EMI) detection circuit, and a decision-making controller. The photo-sensitive element is configured to generate an electrical signal in response to modulated light. The electromagnetic interference (EMI) detection circuit is configured to generate an electrical signal in response to EMI. The decision-making controller is electrically coupled to the photo-sensitive element and the EMI detection circuit, wherein the decision-making controller generates an output based on the inputs received from the photo-sensitive element and the EMI detection circuit.
Claims19
A modulated light receiver comprising:
- a photo-sensitive element configured to generate an electrical signal in response to modulated light;
- an electromagnetic interference (EMI) detection circuit configured to generate an electrical signal in response to EMI;
- a decision-making controller electrically coupled to the photo-sensitive element and the EMI detection circuit, wherein the decision-making controller generates one or more outputs based on the inputs received from the photo-sensitive element and the EMI detection circuit;
- and
- a blocking circuit that receives an input from the EMI detection circuit, wherein the blocking circuit prevents generation of at least one of the outputs indicating detection of modulated light if the EMI detection circuit provides an electrical signal indicating detected EMI.
A laser warning receiver system comprising:
- a detection system that includes a modulated light detection circuit and an electromagnetic interference (EMI) detection circuit;
- and
- an output device connected to the modulated light detector, wherein in response to modulated light detected by the modulated light detection circuit an output is generated at the output device and wherein in response to EMI detected by the EMI detection circuit the output is modified, wherein modification of the output in response to EMI detected by the EMI detection circuit includes modifying one or more of an audio, visual, digital communication, and/or haptic output generated by the output device from an output generated in response to detected modulated light.
A laser warning receiver system comprising:
- a detection system that includes a modulated light detection circuit and an electromagnetic interference (EMI) detection circuit, wherein the modulated light detection circuit includes a photo-sensitive element and a signal conditioning circuit configured to generate an electrical response to modulated light incident on the photo-sensitive element, and wherein the EMI detection circuit includes one or more photo-sensitive elements and one or more signal conditioning circuits, wherein the one or more photo-sensitive elements included in the EMI detection circuit differs from the photo-sensitive element included in the modulated light detection circuit in one or more of wavelength of sensitivity, direction of sensitivity, signal type or sensitivity, or a combination therefore;
- and
- an output device connected to the modulated light detector, wherein in response to modulated light detected by the modulated light detection circuit an output is generated at the output device and wherein in response to EMI detected by the EMI detection circuit the output is modified.
Dependencies are inferred from the claim text.