Noise Reduction In Xray Emitter/Detector Systems
First Claim
1. A signal noise reduction system for an x-ray emitter/detector system, comprising:
- a common clock connected to at least two subsystems of the x-ray emitter/detector system to enable a plurality of noise sources associated with the at least two subsystems within the x-ray emitter/detector system to be correlated with the common clock;
at least one adaptive filter having a plurality of taps configured to receive a desired signal and a correlated noise estimate signal and output an error signal;
an update algorithm used to update a value of the plurality of taps to minimize the error signal output to thereby substantially remove at least one of the plurality of noise sources at each of the at last one variable filters in the x-ray emitter/detector system to provide a more accurate display of an output of the x-ray emitter/detector system.
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Abstract
Systems and methods for reducing signal noise in an x-ray emitter/detector system are disclosed. A common clock is connected to at least two subsystems of the x-ray emitter/detector system to enable a plurality of noise sources associated with the at least two subsystems within the x-ray emitter/detector system to be correlated with the common clock. At least one adaptive filter having a plurality of taps is configured to receive a desired signal and a correlated noise estimate signal and output an error signal. An update algorithm is used to update a value of the plurality of taps to minimize the error signal output to thereby substantially remove at least one of the plurality of noise sources at each of the at last one variable filters in the x-ray emitter/detector system to provide a more accurate display of the output of the x-ray emitter/detector system.
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Citations
20 Claims
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1. A signal noise reduction system for an x-ray emitter/detector system, comprising:
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a common clock connected to at least two subsystems of the x-ray emitter/detector system to enable a plurality of noise sources associated with the at least two subsystems within the x-ray emitter/detector system to be correlated with the common clock; at least one adaptive filter having a plurality of taps configured to receive a desired signal and a correlated noise estimate signal and output an error signal; an update algorithm used to update a value of the plurality of taps to minimize the error signal output to thereby substantially remove at least one of the plurality of noise sources at each of the at last one variable filters in the x-ray emitter/detector system to provide a more accurate display of an output of the x-ray emitter/detector system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A signal noise reduction system for an x-ray emitter/detector system, comprising:
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a plurality of adaptive filters; a first correlated noise estimate of a first noise source on a signal in the x-ray emitter/detector system; a first of the plurality of adaptive filters configured to receive the first correlated noise estimate to enable noise related to the first noise source to be substantially removed from the signal and output a filtered signal substantially free of the noise related to the first noise source; an additional correlated noise estimate of a further noise source on the signal in the x-ray emitter/detector system; a subsequent adaptive filter of the plurality of adaptive filters configured to receive the filtered signal and the additional correlated noise estimate to enable noise related to the further noise source to be substantially removed from the filtered signal and output a further filtered signal substantially free of the further noise source to enable a plurality of noise sources on the signal to be removed in the x-ray emitter/detector system using the plurality of adaptive filters to provide a more accurate display of the signal. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method for reducing signal noise in an x-ray emitter/detector system, comprising:
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providing a common clock connected to at least two subsystems of the x-ray emitter/detector system to enable a plurality of noise sources associated with the at least two subsystems within the x-ray emitter/detector system to be correlated with the common clock; filtering at least one of the plurality of noise sources using an adaptive filter having a plurality of taps configured to receive a desired signal and a correlated noise estimate signal and output an error signal; updating a value of the plurality of taps with an update algorithm to minimize the error signal output to thereby substantially remove the at least one noise source at the adaptive filters in the x-ray emitter/detector system to provide a more accurate display of an output of the x-ray emitter/detector system. - View Dependent Claims (20)
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Specification