Transfer function control for biometric monitoring system
First Claim
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1. A modular apparatus for acquiring biometric data, the modular apparatus comprising:
- circuitry operative to receive an input signal at an input corresponding to the biometric data, the circuitry comprising at least one filter and an amplifier, the circuitry being configured to process the input signal according to an aggregate transfer function thereof and to provide a corresponding processed input signal, the biometric data being indicative of at least one of (i) biological or biomedical information of a patient acquired from one or more physiological sensors, (ii) feedback information associated with a delivery of a therapy to the patient (iii) status information for the one or more physiological sensors, or (iv) operating parameters associated with equipment used to deliver the therapy to the patient;
a controller configured to provide at least one control signal to the circuitry to programmatically modify the transfer function of the modular system by setting (i) at least one filter coefficient of the at least one filter and (ii) a gain of the amplifier to facilitate acquisition of the biometric data; and
a register configured for storing a digital representation of the corresponding processed signal in a predetermined number of bits assigned to store the biometric data acquired by the circuitry, the controller being configured to set the at least one filter coefficient and the gain of the aggregate transfer function so that the register accommodates a maximum dynamic range of the circuitry by fitting the biometric data in the predetermined number of bits.
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Abstract
A modular apparatus for acquiring biometric data may include circuitry operative to receive an input signal indicative of a biometric condition, the circuitry being configured to process the input signal according to a transfer function thereof and to provide a corresponding processed input signal. A controller is configured to provide at least one control signal to the circuitry to programmatically modify the transfer function of the modular system to facilitate acquisition of the biometric data.
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Citations
17 Claims
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1. A modular apparatus for acquiring biometric data, the modular apparatus comprising:
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circuitry operative to receive an input signal at an input corresponding to the biometric data, the circuitry comprising at least one filter and an amplifier, the circuitry being configured to process the input signal according to an aggregate transfer function thereof and to provide a corresponding processed input signal, the biometric data being indicative of at least one of (i) biological or biomedical information of a patient acquired from one or more physiological sensors, (ii) feedback information associated with a delivery of a therapy to the patient (iii) status information for the one or more physiological sensors, or (iv) operating parameters associated with equipment used to deliver the therapy to the patient; a controller configured to provide at least one control signal to the circuitry to programmatically modify the transfer function of the modular system by setting (i) at least one filter coefficient of the at least one filter and (ii) a gain of the amplifier to facilitate acquisition of the biometric data; and a register configured for storing a digital representation of the corresponding processed signal in a predetermined number of bits assigned to store the biometric data acquired by the circuitry, the controller being configured to set the at least one filter coefficient and the gain of the aggregate transfer function so that the register accommodates a maximum dynamic range of the circuitry by fitting the biometric data in the predetermined number of bits. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A modular apparatus for acquiring biometric data, the modular apparatus comprising:
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circuitry operative to receive an input signal, the circuitry being configured to process the input signal according to a transfer function thereof and to provide a corresponding processed input signal; a controller configured to provide at least one control signal to the circuitry to programmatically modify the transfer function of the modular system to facilitate acquisition of the biometric data, the biometric data being indicative of at least one of (i) biological or biomedical information of a patient acquired from one or more physiological sensors, (ii) feedback information associated with a delivery of a therapy to the patient (iii) status information for the one or more physiological sensors or (iv) operating parameters associated with equipment used to deliver the therapy to the patient; and a plurality of channels, each channel having circuitry for receiving and processing a respective input signal, the controller selectively adjusting more than a gain setting of a channel transfer function associated with the circuitry of each respective channel of the plurality of channels to maximize the dynamic range of each respective channel according to a predetermined portion of addressable memory space assigned to each respective channel. - View Dependent Claims (11)
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12. A modular system for acquiring biometric data comprising:
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means for amplifying an input signal received at an input to provide an amplified signal; means for filtering the input signal to provide a filtered signal; means for processing the amplified and filtered signal to provide a computed value corresponding to the biometric data, the biometric data being indicative of at least one of (i) biological or biomedical information of a patient acquired from one or more physiological sensors, (ii) feedback information associated with a delivery of a therapy to the patient (iii) status information for the one or more physiological sensors or (iv) operating parameters associated with equipment used to deliver the therapy to the patient; means for controlling a transfer function of at least the means for amplifying and the means for filtering based on the computed value; and means for storing a digital representation of the computed value in a predetermined amount of memory space, the means for controlling adjusts the transfer function for accommodation of the digital representation of the computed value in the means for storing to achieve a maximum dynamic range for the modular system. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification