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公开(公告)号：US11509513B2
公开(公告)日：2022-11-22
申请号：US17402108
申请日：2021-08-13
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：US20220291800A1
公开(公告)日：2022-09-15
申请号：US17201956
申请日：2021-03-15
Applicant: STMicroelectronics Asia Pacific Pte Ltd.
Inventor： Sa Hyang Hong , Sang Hoon Jeon , Yun Sang On , Min Sang Kim
Abstract: A method for operating an electronic device, the method including: displacing a rollable touchscreen to a first position along a first direction, a first side of the rollable touchscreen being mounted in a housing, the rollable touchscreen being configured to be rolled into or unrolled out of the housing along the first direction, detecting an active electrode at a first location on the rollable touchscreen, the active electrode being mounted in the housing, and determining the first position of the rollable touchscreen based on the first location, the first positing being indicative of a fractional amount of the rollable touchscreen outside the housing.
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273.发明授权公开(公告)号：US11416095B2
公开(公告)日：2022-08-16
申请号：US15151247
申请日：2016-05-10
Inventor： Tae-gil Kang , Hang Yin , Cam Chung La
Abstract: An electronic device described herein 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 is 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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公开(公告)号：US11387676B2
公开(公告)日：2022-07-12
申请号：US17007225
申请日：2020-08-31
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Eng Jye Ng , Chee Weng Cheong , Huiqiao He
Abstract: A system comprising includes a wireless power receiver generating a rectified voltage. A low dropout regulator (LDO) generates a first regulated output voltage from the rectified voltage, during a first phase. A first switch couples the first regulated output voltage to a voltage output node during the first phase. During a second phase, the LDO generates a second regulated output voltage from the rectified voltage. A switching regulator generates a third regulated output voltage during the second phase. A second switch couples the third regulated output voltage to the voltage output node during the second phase. During a third phase, the LDO is disabled, while the switching regulator continues to generate the third regulated output voltage. The first switch opens during the third phase while the second switch remains closed.
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公开(公告)号：US11353373B2
公开(公告)日：2022-06-07
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
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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Patent Agency Ranking
公开(公告)号：US11271393B1
公开(公告)日：2022-03-08
申请号：US17007633
申请日：2020-08-31
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Supriya Raveendra Hegde , Yannick Guedon , Huiqiao He
Abstract: A wireless-power-system 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 voltage node. An excitation circuit is coupled to the first input. A protection circuit has a first connection node capacitively coupled to the first terminal. The protection circuit, in Q-factor measurement mode, clamps the first connection node when the first input is coupled to ground, and connects the first connection node to the rectified voltage node when the first input is coupled to a supply voltage. The protection circuit, in wireless power mode, is acting as one leg of the rectifier. A pass gate circuit is coupled between the first connection node and a sense node, and a sensing circuit is coupled to the sense node and measures a Q-factor of the wireless power system when the protection circuit is in Q-factor measurement mode.
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公开(公告)号：US20220069570A1
公开(公告)日：2022-03-03
申请号：US17007633
申请日：2020-08-31
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Supriya Raveendra HEGDE , Yannick GUEDON , Huiqiao HE
Abstract: A wireless-power-system 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 voltage node. An excitation circuit is coupled to the first input. A protection circuit has a first connection node capacitively coupled to the first terminal. The protection circuit, in Q-factor measurement mode, clamps the first connection node when the first input is coupled to ground, and connects the first connection node to the rectified voltage node when the first input is coupled to a supply voltage. The protection circuit, in wireless power mode, is acting as one leg of the rectifier. A pass gate circuit is coupled between the first connection node and a sense node, and a sensing circuit is coupled to the sense node and measures a Q-factor of the wireless power system when the protection circuit is in Q-factor measurement mode.
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公开(公告)号：US20220030667A1
公开(公告)日：2022-01-27
申请号：US17472247
申请日：2021-09-10
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：US20220021373A1
公开(公告)日：2022-01-20
申请号：US17371368
申请日：2021-07-09
Inventor： Marco Sautto , Giona Fucili , Valerio Lo Muzzo , Kaufik Linggajaya
IPC: H03H11/04 , H01L41/113
Abstract: In accordance with an embodiment, a method of operating a piezoelectric transducer configured to transduce mechanical vibrations into transduced electrical signals at a pair of sensor electrodes includes stimulating a resonant oscillation of the piezoelectric transducer by applying at least one pulse electrical stimulation signal to the pair of sensor electrodes; detecting, at the pair of sensor electrodes, at least one electrical signal resulting from the stimulated resonant oscillation, wherein the at least one electrical signal resulting from the stimulated resonant oscillation oscillates at a resonance frequency of the piezoelectric transducer; measuring a frequency of oscillation of the at least one electrical signal resulting from the stimulated resonant oscillation to obtain a measured resonance frequency of the piezoelectric transducer; and tuning a stopband frequency of a notch filter coupled to the piezoelectric transducer to match the measured resonance frequency of the piezoelectric transducer.
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公开(公告)号：US20220021241A1
公开(公告)日：2022-01-20
申请号：US16930651
申请日：2020-07-16
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Yannick GUEDON
IPC: H02J50/12
Abstract: Disclosed herein is a bridge rectifier and associated control circuitry collectively forming a “regtifier”, capable of both rectifying an input time varying voltage as well as regulating the rectified output voltage produced. To accomplish this, the gate voltages of transistors of the bridge rectifier that are on during a given phase may be modulated via analog control (to increase the on-resistance of those transistors) or via pulse width modulation (to turn off those transistors prior to the end of the phase). Alternatively or additionally, the transistors of the bridge rectifier that would otherwise be off during a given phase may be turned on to help dissipate excess power and thereby regulate the output voltage. A traditional voltage regulator, such as a low-dropout amplifier, is not used in this design.
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