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351.发明申请公开(公告)号：US20220334671A1
公开(公告)日：2022-10-20
申请号：US17859576
申请日：2022-07-07
Inventor： Tae-gil KANG , Hang YIN , Cam Chung LA
Abstract: An electronic device includes a touch screen for a touch sensitive display carried by a portable housing. The electronic device is configured to operate in a high detection threshold mode to determine whether an object is in contact with the touch sensitive display, and operate in a low detection threshold mode to determine whether the object is adjacent to the touch sensitive display, based on lack of detection of the object being in contact with the touch sensitive display. The electronic device is further configured to determine whether the object s in contact with a peripheral edge of the portable housing by determining whether the object is adjacent opposite sides of the touch sensitive display, based on detection of the object being adjacent to the touch sensitive display.
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352.发明授权公开(公告)号：US11301097B2
公开(公告)日：2022-04-12
申请号：US17230317
申请日：2021-04-14
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Kusuma Adi Ningrat , Cam Chung La
IPC: G06F3/044 , G06F3/0488 , G06F3/041 , G06F3/04883
Abstract: A touch-screen-controller (TSC) performs mutual sensing to acquire touch strength values from a touch matrix formed by capacitively intersecting conductive lines. For each line, the TSC generates an emulated self capacitance value from an associated touch strength value based upon a position of that line compared to a location on the touch matrix adjacent to which a first touch type is expected to occur, and determines presence of the first touch type adjacent to the touch matrix based upon the emulated values. The emulated values for each conductive line may be weighted based upon its closeness to the location where the first touch type is expected to occur. The weighting may be zero if its associated conductive line is outside of the location where the first touch type is expected to occur, and may be one if inside of the location where the first touch type is expected to occur.
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公开(公告)号：US11294504B2
公开(公告)日：2022-04-05
申请号：US16704212
申请日：2019-12-05
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Yannick Guedon , Leonard Liviu Dinu , Hugo Gicquel
Abstract: A touch screen controller includes an input stage configured to receive and condition a touch output from a touch matrix to produce a touch signal. An accumulation stage is configured to receive the touch signal and accumulate the touch signal to produce an accumulated output. The accumulated output is digitized by an analog to digital converter to produce a touch strength value. A given amount of charge is subtracted from or added to accumulated output during a next accumulation if the touch strength value is greater than an upper threshold or less than a lower threshold. This avoids saturation of components in the touch screen controller and therefore increases the signal to noise ratio.
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公开(公告)号：US20220103019A1
公开(公告)日：2022-03-31
申请号：US17408824
申请日：2021-08-23
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Baranidharan KARUPPUSAMY , Thet Mon SANN , Kien Beng TAN , Supriya Raveendra HEGDE , Huiqiao HE , Teerasak LEE
Abstract: A wireless power circuit operable in transceiver mode and in Q-factor measurement mode includes a bridge rectifier having first and second inputs coupled to first and second terminals of a coil, and an output coupled to a rectified node. An excitation circuit coupled to the first terminal, in Q-factor measurement mode, drives the coil with a pulsed signal. A protection circuit couples the first terminal to a first node when in Q-factor measurement mode and decouples the first terminal when in transceiver mode. A controller causes the bridge rectifier to short the first and second terminals to ground during Q-factor measurement mode. A sensing circuit amplifies voltage at the first node to produce an output voltage, and in response to the voltage at the first node rising to cross a rising threshold voltage, digitizes the output voltage. The digitized output voltage is used in calculating a Q-factor of the coil.
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公开(公告)号：US11255875B2
公开(公告)日：2022-02-22
申请号：US16793544
申请日：2020-02-18
Applicant: STMicroelectronics Asia Pacific Pte Ltd.
Inventor： Heejun Kwak
Abstract: A sensor includes a MEMS element responsive to acceleration, an analog-to-digital converter coupled to an output of the MEMS element, and a free fall detector coupled to an output of the analog-to-digital converter. The free fall detector is configured to determine whether the sensor is in free fall based on acceleration information received from the analog-to-digital converter. A digital interface is coupled to the analog-to-digital converter and to an output of the free fall detector and is configured to issue an output related to free fall information determined by the free fall detector.
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Patent Agency Ranking
公开(公告)号：US11243636B1
公开(公告)日：2022-02-08
申请号：US17107137
申请日：2020-11-30
Applicant: STMicroelectronics Asia Pacific Pte Ltd.
Inventor： Ju Hyun Son , Min Sang Kim , Yun Sang On , Sa Hyang Hong , Yong Hun Lee
Abstract: A method for operating an electronic device includes: having a touch sensitive display configured to be rolled into or unrolled out of a first retainment structure along a first direction. The first retainment structure includes a conductive material disposed within the first retainment structure. The method includes unrolling or rolling the touch sensitive display to an unrolled position along the first direction; determining that the touch sensitive display is detecting contact at a plurality of mutual sensing locations using a mutual sensing process; determining that the touch sensitive display is detecting contact at a plurality self-sensing locations using a self-sensing process; determining a plurality of multi-mutual sensing locations based on multi-mutual sensing values obtained from a multi-mutual sensing process; and determining the unrolled position along the first direction based on the plurality of mutual sensing locations, the plurality self-sensing locations, and the plurality of multi-mutual sensing locations.
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公开(公告)号：US20210372867A1
公开(公告)日：2021-12-02
申请号：US16887352
申请日：2020-05-29
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Min Sang KIM , Chan Hyuck YUN , Sa Hyang HONG , Ju Hyun SON
IPC: G01L1/22
Abstract: A strain gauge includes first and second substrates spaced apart from one another. A first flexible printed circuit board portion is in contact with a top side of the first and second substrates, and has a first Wheatstone bridge formed therein. The first flexible printed circuit board portion positions the first Wheatstone bridge such that two resistors of the first Wheatstone bridge are positioned to span from the top side of the first substrate to the top side of the second substrate. A second flexible printed circuit board portion is in contact with a bottom side of the first and second substrates, and has a second Wheatstone bridge formed therein. The second flexible printed circuit board positions the second Wheatstone bridge such that two resistors of the second Wheatstone bridge are positioned to span from the bottom side of the first substrate to the bottom side of the second substrate.
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公开(公告)号：US11140010B2
公开(公告)日：2021-10-05
申请号：US16669068
申请日：2019-10-30
Applicant: STMicroelectronics Asia Pacific Pte Ltd.
Inventor： Yannick Guedon
Abstract: A power transmitter includes: a first switch coupled between a first node and a reference voltage node; a second switch configured to be coupled between a power supply and the first node; a coil and a capacitor coupled in series between the first node and the reference voltage node; a first sample-and-hold (S&H) circuit having an input coupled to the first node; and a timing control circuit configured to generate a first control signal, a second control signal, and a third control signal that have a same frequency, where the first control signal is configured to turn ON and OFF the first switch alternately, the second control signal is configured to turn ON and OFF the second switch alternately, and where the third control signal determines a sampling time of the first S&H circuit and has a first pre-determined delay from a first edge of the first control signal.
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公开(公告)号：US20210255215A1
公开(公告)日：2021-08-19
申请号：US16793544
申请日：2020-02-18
Applicant: STMicroelectronics Asia Pacific Pte Ltd.
Inventor： Heejun Kwak
Abstract: A sensor includes a MEMS element responsive to acceleration, an analog-to-digital converter coupled to an output of the MEMS element, and a free fall detector coupled to an output of the analog-to-digital converter. The free fall detector is configured to determine whether the sensor is in free fall based on acceleration information received from the analog-to-digital converter. A digital interface is coupled to the analog-to-digital converter and to an output of the free fall detector and is configured to issue an output related to free fall information determined by the free fall detector.
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公开(公告)号：US11086448B2
公开(公告)日：2021-08-10
申请号：US15378188
申请日：2016-12-14
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Leonard Liviu Dinu , Hugo Gicquel
Abstract: A touch screen controller disclosed herein includes a circuit configured to generate a digital touch voltage comprises of samples, at a base sampling rate. The touch screen controller also includes a digital processing unit configured to analyze a first subset of samples of the digital touch voltage samples to determine noise content thereof, the first subset of samples corresponding to samples at a first investigated sampling rate that is a first function of the base sampling rate. The digital processing unit is also configured to analyze a second subset of samples of the digital touch voltage to determine noise content thereof, with the second subset of samples corresponding to samples at a second investigated sampling rate that is a second function of the base sampling rate, and determine a preferred sampling rate from among the first and second investigated sampling rates as a function of determined noise content thereof.
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