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公开(公告)号：US12111623B2
公开(公告)日：2024-10-08
申请号：US18093080
申请日：2023-01-04
申请人： SIGMASENSE, LLC.
发明人： Patrick Troy Gray , Gerald Dale Morrison , Daniel Keith Van Ostrand , Richard Stuart Seger, Jr.
摘要： A rotating equipment system with in-line drive-sense circuit (DSC) electric power signal processing includes rotating equipment, in-line drive-sense circuits (DSCs), and one or more processing modules. The in-line DSCs receive input electrical power signals and generate motor drive signals for the rotating equipment. An in-line DSC receives an input electrical power signal, processes it to generate and output a motor drive signal to the rotating equipment via a single line and simultaneously senses the motor drive signal via the single line. Based on the sensing of the motor drive signal via the single line, the in-line DSC provides a digital signal to the one or more processing modules that receive and process the digital signal to determine information regarding one or more operational conditions of the rotating equipment, and based thereon, selectively facilitate one or more adaptation operations on the motor drive signal via the in-line DSC.
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2.发明公开公开(公告)号：US20240320181A1
公开(公告)日：2024-09-26
申请号：US18732747
申请日：2024-06-04
申请人： SigmaSense, LLC.
发明人： Richard Stuart Seger, JR. , Daniel Keith Van Ostrand , Gerald Dale Morrison , Timothy W. Markison
CPC分类号： G06F13/4072 , H04L7/04 , H04L12/40045 , G06F2213/0016 , H03F3/45 , H04L25/0282
摘要： A low voltage drive circuit includes a transmit digital to analog circuit that converts transmit digital data into analog outbound data by: generating a DC component; generating a first oscillation at a first frequency; generating a second oscillation at the first frequency; and outputting the first oscillation or the second oscillation on a bit-by-bit basis in accordance with the transmit digital data to produce an oscillating component, wherein the DC component is combined with the oscillating component to produce the analog outbound data, and wherein the oscillating component and the DC component are combined to produce the analog outbound data. A drive sense circuit drives an analog transmit signal onto a bus, wherein the analog outbound data is represented within the analog transmit signal as variances in loading of the bus at the first frequency and wherein analog inbound data is represented within an analog receive signal as variances in loading of the bus at a second frequency.
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公开(公告)号：US12099095B2
公开(公告)日：2024-09-24
申请号：US18205819
申请日：2023-06-05
申请人： SIGMASENSE, LLC.
发明人： Patrick Troy Gray , Gerald Dale Morrison , Michael Frederick David Olley , Daniel Keith Van Ostrand , Richard Stuart Seger, Jr.
IPC分类号： G01R31/367 , G01R31/371 , G01R31/382 , G01R31/392
CPC分类号： G01R31/367 , G01R31/382 , G01R31/371 , G01R31/392
摘要： A battery characterization system includes a drive-sense circuit (DSC), memory that stores operational instructions, and processing module(s) operably coupled to the DSC and the memory. Based on a reference signal, the DSC generates a charge signal, which includes an AC (alternating current) component, and provides the charge signal to a terminal of a battery via a single line and simultaneously to senses the charge signal via the single line to detect an electrical characteristic of the battery based on a response of the battery. The DSC generates a digital signal representative of the electrical characteristic of the battery. The processing module(s), based on the operational instructions, generate the reference signal to include a frequency sweep of the AC component of the charge signal (e.g., different frequencies at different times or multiple frequencies simultaneously) and processes the digital signal to characterize the battery across the different respective frequencies and generate spectrum analysis (SA) information of the battery.
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公开(公告)号：US12046214B2
公开(公告)日：2024-07-23
申请号：US16362447
申请日：2019-03-22
申请人： SIGMASENSE, LLC.
IPC分类号： G09G3/36
CPC分类号： G09G3/3688 , G09G2300/0452 , G09G2300/0809 , G09G2310/0243 , G09G2320/0223
摘要： A display control unit includes a data drive unit, a gate drive unit, a drive settle detection circuit, and a row enable module. The data drive unit generates data drive signals for driving data lines of a display. The gate drive unit drives gate lines of the display in an order based on a row enable signal. The drive settle detection circuit monitors a set of data drive signals for an activated gate line. The drive settle detection circuit also sets a settled signal for the activated gate line when each drive signal of the set of drive signals has reached a corresponding settling threshold. The row enable module ends, as part of the row enable signal, activation of the activated gate line based on the settled signal and activates, as part of the row enable signal, another gate line based on the settled signal.
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公开(公告)号：US12039123B2
公开(公告)日：2024-07-16
申请号：US18236224
申请日：2023-08-21
申请人： SIGMASENSE, LLC.
发明人： Kevin Joseph Derichs
CPC分类号： G06F3/0416 , G06F3/0412 , G06F3/044 , G06F3/0445 , G06F3/0446
摘要： A touch sensor device includes a first panel, a second panel, and a drive-sense circuit (DSC). The first panel that includes first electrodes arranged in a first direction and second electrodes arranged in a second direction. The second panel includes third electrodes arranged in a third direction and fourth electrodes arranged in a fourth direction. The DSC is operably coupled via a single line to a coupling of a first electrode of the first electrodes and a first electrode of the third electrodes. The DSC is configured to provide the signal, which is generated based on a reference signal, via the single line to the coupling and simultaneously to sense the signal via the single line. The DSC generates a digital signal representative of the at least one electrical characteristic associated with the first electrode of the first electrodes and/or the first electrode of the third electrodes.
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公开(公告)号：US12021541B2
公开(公告)日：2024-06-25
申请号：US18129527
申请日：2023-03-31
申请人： SIGMASENSE, LLC.
发明人： Phuong Huynh
CPC分类号： H03M1/004 , H03M1/0626 , H03M1/0854 , H03M1/1245 , H03M1/34 , H03M3/462 , H03M3/476 , H03M3/422
摘要： A high resolution analog to digital converter (ADC) with improved bandwidth senses an analog signal (e.g., a load current) to generate a digital signal. The ADC operates based on a load voltage produced based on charging of an element (e.g., a capacitor) by a load current and a digital to analog converter (DAC) output current (e.g., from a N-bit DAC). The ADC generates a digital output signal representative of a difference between the load voltage and a reference voltage. This digital output signal is used directly, or after digital signal processing, to operate an N-bit DAC to generate a DAC output current that tracks the load current. In addition, quantization noise is subtracted from the digital output signal thereby extending the operational bandwidth of the ADC. In certain examples, the operational bandwidth of the ADC extends up to 100s of kHz (e.g., 200-300 kHz), or even higher.
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公开(公告)号：US12007446B2
公开(公告)日：2024-06-11
申请号：US18128095
申请日：2023-03-29
申请人： SIGMASENSE, LLC.
发明人： Patrick Troy Gray , Gerald Dale Morrison , Michael Frederick David Olley , Daniel Keith Van Ostrand , Richard Stuart Seger, Jr.
IPC分类号： G01R31/367 , G01R31/371 , G01R31/382 , G01R31/392
CPC分类号： G01R31/367 , G01R31/382 , G01R31/371 , G01R31/392
摘要： A battery characterization system includes a drive-sense circuit (DSC), memory that stores operational instructions, and processing module(s) operably coupled to the DSC and the memory. Based on a reference signal, the DSC generates a charge signal, which includes an AC (alternating current) component, and provides the charge signal to a terminal of a battery via a single line and simultaneously to senses the charge signal via the single line to detect an electrical characteristic of the battery based on a response of the battery. The DSC generates a digital signal representative of the electrical characteristic of the battery. The processing module(s), based on the operational instructions, generate the reference signal to include a frequency sweep of the AC component of the charge signal (e.g., different frequencies at different times or multiple frequencies simultaneously) and processes the digital signal to characterize the battery across the different respective frequencies and generate spectrum analysis (SA) information of the battery.
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公开(公告)号：US11989378B2
公开(公告)日：2024-05-21
申请号：US17727722
申请日：2022-04-23
申请人： SigmaSense, LLC.
发明人： Kevin Joseph Derichs
IPC分类号： G06F3/044 , G06F3/0354 , G06F3/041
CPC分类号： G06F3/0441 , G06F3/03545 , G06F3/04186 , G06F3/0445 , G06F3/0447 , G06F3/0446 , G06F2203/04105 , G06F2203/04108
摘要： A passive pen for interaction with a touch screen, wherein the passive pen includes a housing, a conductive section, a fixed conductive z-direction mounting section coupled to the conductive section, a moveable conductive z-direction mounting section, a variable capacitor positioned between the fixed conductive z-direction mounting section and the moveable conductive z-direction mounting section, and a conductive tip coupled to the moveable conductive z-direction mounting section. When the user is in contact with the conductive section, a capacitive connection is established between the conductive section and the user's body. The variable capacitor has a compressive property. Pressure on the conductive tip creates a z-direction force operable to move the moveable conductive z-direction mounting section in the z-direction. Movement of the moveable conductive z-direction mounting section compresses the variable capacitor against the fixed conductive z-direction mounting section. When the variable capacitor is compressed, capacitance of the variable capacitor changes.
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公开(公告)号：US11984902B2
公开(公告)日：2024-05-14
申请号：US18201896
申请日：2023-05-25
申请人： SIGMASENSE, LLC.
CPC分类号： H03M1/0626 , G06F3/044 , H03H7/0161 , H03M1/1245 , H03M3/462 , G06F3/041
摘要： A digital decimation filtering circuit of an analog to digital conversion circuit includes an n-tap anti-aliasing filter operable to receive a 1-bit analog to digital converter (ADC) output signal at an oversampling rate and filter the 1-bit ADC output signal to remove frequencies higher than a selected cut-off frequency to produce an n-bit filtered signal at a first data output rate. The digital decimation filtering circuit further includes a decimator operable to receive the n-bit filtered signal at the first data output rate, decimate the n-bit filtered signal by a decimation factor to produce a set of output signals, and sum the set of outputs to produce a decimated signal at a second data output rate. The first data output rate is greater than the second data output rate.
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公开(公告)号：US11977123B2
公开(公告)日：2024-05-07
申请号：US17828407
申请日：2022-05-31
申请人： SIGMASENSE, LLC.
IPC分类号： G01R31/3835 , G01R31/371 , G01R31/3842 , H02J7/00
CPC分类号： G01R31/3835 , G01R31/371 , G01R31/3842 , H02J7/0047 , H02J7/0063
摘要： A voltage sensor includes a drive-sense circuit (DSC) and a reference load. The DSC is operably coupled to a point along a wire that is proximate to a battery terminal. The wire connects the battery terminal to a load. The DSC is configured to generate a signal based on a reference signal that is reference signal is based on an estimate of a voltage at the point along the wire. The DSC is also configured to generate an output signal that corresponds to a difference between the signal and the reference signal and to tune the reference signal until the signal compares favorably to the voltage at the point along the wire. The DSC also is configured to determine the voltage at the point along the wire based on the tuned reference signal. The reference load is operably coupled to the DSC and the point along a wire.
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