HAND-HELD TEST MESTER WITH LOW-DISTORTION SIGNAL GENERATION CIRCUIT BLOCK
First Claim
1. A hand-held test meter for use with an analytical test strip in the determination of an analyte in a bodily fluid sample, the hand-held test meter comprising:
- a housing;
a clock module disposed in the housing;
a micro-controller disposed in the housing;
a low-distortion signal generation circuit block disposed in the housing that includes;
a signal summation circuit sub-block;
a resistance-capacitance (RC) filter; and
a single operational amplifier; and
a strip port connector configured to operationally receive an analytical test strip; and
wherein the clock module and micro-controller are configured to generate a plurality of phase-shifted square wave signals and output the plurality of phase-shifted square wave signals to the signal summation circuit; and
wherein the signal summation circuit is configured to sum the plurality of phase-shifted square wave signals to generate a resultant summed-wave signal and output the resultant summed-wave signal to the RC filter; and
wherein the RC filter is configured to filter harmonics from the resultant summed-wave signal thereby creating a reduced harmonic distortion signal; and
wherein the single operational amplifier is configured to amplify the reduced harmonic distortion signal to produce an amplified reduced harmonic distortion signal that is output to an analytical test strip received in the strip port connector.
9 Assignments
0 Petitions
Accused Products
Abstract
A hand-held test meter for use with an analytical test strip in the determination of an analyte in a bodily fluid sample includes a housing, a clock module disposed in the housing, a micro-controller disposed in the housing, a low-distortion signal generation circuit block (“LDSGCB”) disposed in the housing, and a strip port connector configured to operationally receive the analytical test strip. The LDSGCB includes a signal summation circuit (“SSC”) sub-block, a resistance-capacitance (RC) filter, and a single operational amplifier. The clock module and micro-controller are configured to generate phase-shifted square wave signals and output the phase-shifted square wave signals to the SSC. The SSC is configured to sum the phase-shifted square wave signals to generate a resultant summed-wave signal and output the resultant summed-wave signal to the RC filter. The RC filter is configured to filter harmonics from the resultant summed-wave signal thereby creating a reduced harmonic distortion signal.
9 Citations
27 Claims
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1. A hand-held test meter for use with an analytical test strip in the determination of an analyte in a bodily fluid sample, the hand-held test meter comprising:
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a housing; a clock module disposed in the housing; a micro-controller disposed in the housing; a low-distortion signal generation circuit block disposed in the housing that includes; a signal summation circuit sub-block; a resistance-capacitance (RC) filter; and a single operational amplifier; and a strip port connector configured to operationally receive an analytical test strip; and wherein the clock module and micro-controller are configured to generate a plurality of phase-shifted square wave signals and output the plurality of phase-shifted square wave signals to the signal summation circuit; and wherein the signal summation circuit is configured to sum the plurality of phase-shifted square wave signals to generate a resultant summed-wave signal and output the resultant summed-wave signal to the RC filter; and wherein the RC filter is configured to filter harmonics from the resultant summed-wave signal thereby creating a reduced harmonic distortion signal; and wherein the single operational amplifier is configured to amplify the reduced harmonic distortion signal to produce an amplified reduced harmonic distortion signal that is output to an analytical test strip received in the strip port connector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for employing a hand-held test meter and analytical test strip, the method comprising:
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inserting an analytical test strip into a strip port connector of a hand-held test meter; generating, using a clock module and a micro-controller of the hand-held test meter, a plurality of phase-shifted square wave signals and outputting the plurality of phase-shifted square wave signals to a low-distortion signal generation circuit block of the hand-held test meter; employing a signal summation circuit sub-block, resistance-capacitance (RC) filter and single operational amplifier of the low-distortion signal generation to sum the plurality of phase-shifted square wave signals to generate a resultant summed-wave signal and filter harmonics from the resultant summed-wave signal to thereby create a reduced harmonic distortion signal; and
amplify the reduced harmonic distortion signal to produce an amplified reduced harmonic distortion signal that is output to the analytical test strip received in the strip port connector; anddetermining at least one of an analyte in, and a characteristic of, a bodily fluid sample applied to the analytical test strip using the amplified reduced harmonic distortion signal. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A hand-held test meter for use with an analytical test strip in the determination of an analyte in a bodily fluid sample, the hand-held test meter comprising:
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a housing; a clock module disposed in the housing; a micro-controller disposed in the housing; a low-distortion signal generation circuit block disposed in the housing that includes; a signal summation circuit sub-block; and a single operational amplifier; and a strip port connector configured to operationally receive an analytical test strip; and wherein the clock module and micro-controller are configured to generate a plurality of phase-shifted square wave signals and output the plurality of phase-shifted square wave signals to the signal summation circuit; and wherein the signal summation circuit is configured to sum the plurality of phase-shifted square wave signals to generate a resultant summed-wave signal and output the resultant summed-wave signal to the single operational amplifier; and wherein the single operational amplifier is configured to amplify the resultant summed wave signal to produce an amplified low-distortion signal that is output to an analytical test strip received in the strip port connector. - View Dependent Claims (23, 24)
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25. A method for employing a hand-held test meter and analytical test strip, the method comprising:
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inserting an analytical test strip into a strip port connector of a hand-held test meter; generating, using a clock module and a micro-controller of the hand-held test meter, a plurality of phase-shifted square wave signals and outputting the plurality of phase-shifted square wave signals to a low-distortion signal generation circuit block of the hand-held test meter; employing a signal summation circuit sub-block and single operational amplifier of the low-distortion signal generation to sum the plurality of phase-shifted square wave signals to generate a resultant summed-wave signal and to amplify the resultant summed-wave signal to produce an amplified low-distortion signal that is output to the analytical test strip received in the strip port connector; and determining at least one of an analyte in, and a characteristic of, a bodily fluid sample applied to the analytical test strip using the amplified low-distortion signal. - View Dependent Claims (26, 27)
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Specification