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公开(公告)号：US10944341B2
公开(公告)日：2021-03-09
申请号：US16410674
申请日：2019-05-13
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Kaufik Linggajaya
Abstract: The half-bridges driving a multiphase motor are controlled to perform a sequence of operations to support charging a hold capacitor. First, in a brake configuration, the half-bridge transistors are controlled such that either high-side transistors or low-side transistors of the half-bridges are turned on. Second, in an active step-up configuration, the half-bridge transistors are controlled such that the high-side transistor of a first half-bridge and the low-side transistor of a second half-bridge are both turned on and the low-side transistor of the first half-bridge and the high-side transistor of the second half-bridge are both turned off. Third, in an active brake configuration, the half-bridge transistors are controlled such that the low-side transistor of the first half-bridge and the high-side transistor of the second half-bridge are both turned on and the high-side transistor of the first half-bridge and the low-side transistor of the second half-bridge stage are both turned off.
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282.发明申请公开(公告)号：US20200310583A1
公开(公告)日：2020-10-01
申请号：US16902938
申请日：2020-06-16
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Cam Chung LA , Kien Beng TAN
Abstract: A determination is made as to whether touch pressure data acquired from each of a plurality of touch pressure sensors is indicative of abnormal operation. If abnormal operation is indicated, the touch pressure data from each of the plurality of touch pressure sensors, except those touch pressure sensors having touch pressure data indicative of abnormal operation, is summed. Then, the sum is multiplied by a correction factor to produce a touch pressure output indicative of physical force applied to the plurality of touch pressure sensors.
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公开(公告)号：US10790791B2
公开(公告)日：2020-09-29
申请号：US16184778
申请日：2018-11-08
Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD
Inventor： Supriya Raveendra Hegde , Hugo Gicquel
Abstract: A feedback stage for an integrator circuit is provided. The integrator receives a first input current and a second input current that include respective measurement current components and an offset current component. The integrator integrates the first input current and the second input current and generates a first output voltage and a second output voltage. The feedback stage including a transconductance amplifier detects a difference between the first output voltage and the second output voltage and sinks or sources a first output current and a second output current based on the difference between the first output voltage and the second output voltage. The first output current is additively combined with the first input current and the second output current is additively combined with the second input current to mitigate the offset current component at an input of the integrator.
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公开(公告)号：US10775930B2
公开(公告)日：2020-09-15
申请号：US16653172
申请日：2019-10-15
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Leonard Liviu Dinu , Hugo Gicquel
Abstract: An electronic device includes a plurality of charge-to-current converters each including a first NMOS transistor having a source coupled to a sense line, a first capacitor between a gate and source of the first NMOS transistor so that a transient component of noise from the sense line is applied to both, a first PMOS transistor having a source coupled to the sense line, a second capacitor between a gate and source of the first PMOS transistor so the transient component of the noise is applied to both, a first current mirror having an input coupled to a drain of the first NMOS transistor and an output coupled to an output for that charge to current converter, and a second current mirror having an input coupled to a drain of the first PMOS transistor and an output coupled to the output for that charge to current converter.
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公开(公告)号：US10747382B2
公开(公告)日：2020-08-18
申请号：US16173267
申请日：2018-10-29
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Hugo Gicquel , Abhishek Singh
Abstract: Disclosed herein is a touch screen controller including a driver circuit applying a drive signal to a drive line of a capacitive touch sensing panel. The driver circuit is powered by an accurate supply voltage. A driver supply circuit receives an input supply voltage and outputs the accurate supply voltage. The driver supply circuit includes a clocked comparator comparing a divided version of the accurate supply voltage to a reference voltage and outputting a comparison signal based thereupon. A voltage control circuit (e.g. a charge pump circuit) generates the accurate supply voltage in response to the comparison signal. The clocked comparator and voltage control circuit are both clocked by a driver supply circuit clock.
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Patent Agency Ranking
286.发明授权公开(公告)号：US10338746B1
公开(公告)日：2019-07-02
申请号：US15873973
申请日：2018-01-18
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Kusuma Adi Ningrat , Ade Putra
CPC classification number: G06F3/0418 , G06F3/0414 , G06F3/044
Abstract: Disclosed herein is a touch screen controller operable with a touch screen having force lines and sense lines. The touch screen controller includes drive circuitry driving the force lines with a force signal in a touch data sensing mode and not driving the force lines in a noise sensing mode. Sense circuitry senses data at the sense lines in the touch data sensing mode and the noise sensing mode. Processing circuitry samples the data, multiplies the data by a sine multiplier to produce imaginary data, sums the imaginary data, multiplies the data by a cosine multiplier to produce real data, sums the real data, and determines magnitude values of the data as a function of the imaginary data and the real data.
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公开(公告)号：US10326367B2
公开(公告)日：2019-06-18
申请号：US16004253
申请日：2018-06-08
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Kong Yin Leong
Abstract: The amount of power being output to the load is sensed by sampling the frequency of the pulse width modulation signal that is controlling the switch that is providing the power to the load. If the pulse width modulation signal has a high frequency, then it will be providing higher power to the load. As the power drawn by the load decreases, the frequency of the pulse width modulation power supply signal will decrease. By sensing and periodically sampling the frequency of the pulse width modulation signal that is providing power, the demand of the load can be quickly and accurately determined. As the power demand of the load decreases, the peak current that the power supply switch can provide also decreases. The permitted peak current dynamically changes to adapt to the power drawn by the load.
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公开(公告)号：US20190141789A1
公开(公告)日：2019-05-09
申请号：US16233926
申请日：2018-12-27
Inventor： Fuchao WANG , Olivier LENEEL , Ravi SHANKAR
Abstract: An integrated circuit is provided having an active circuit. A heating element is adjacent to the active circuit and configured to heat the active circuit. A temperature sensor is also adjacent to the active circuit and configured to measure a temperature of the active circuit. A temperature controller is coupled to the active circuit and configured to receive a temperature signal from the temperature sensor. The temperature controller operates the heating element to heat the active circuit to maintain the temperature of the active circuit in a selected temperature range.
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公开(公告)号：US20190113999A1
公开(公告)日：2019-04-18
申请号：US15803054
申请日：2017-11-03
Inventor： Hank Yin , Cam Chung La , Janet Sun
IPC: G06F3/044 , G06F3/041 , G06F3/0488
Abstract: A method includes upon sensing a touch to a first location on a touch display, reporting first coordinates of the touch. After sensing movement of the touch along a first path from the first location to a second location more than a tolerance distance away, intermediate coordinates of the touch along the first path that are not more than a cutoff distance away are reported such that there is a first gap between a last reported intermediate coordinate and the second location. After sensing movement of the touch along a second path from the second location to a third location more, second coordinates of the touch are reported, the second reported coordinates of the touch being a point along the first path that is calculated by subtracting the first gap from a distance between the first location and the third location, and then adding a first compensation difference thereto.
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公开(公告)号：US10248256B2
公开(公告)日：2019-04-02
申请号：US16057062
申请日：2018-08-07
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Abhishek Singh , Hugo Gicquel
Abstract: An alternating current (AC) drive signal having a first frequency and a high logic level at a boosted supply voltage is applied to drive a capacitive sensing line of a capacitive touch panel. The boosted supply voltage is generated by boosting an input voltage. The voltage boosting is effectuate by a charge pump circuit operating synchronous to assertion of the AC drive signal with a charge transfer time that is adaptable to different capacitive load conditions.
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