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公开(公告)号：US12040628B2
公开(公告)日：2024-07-16
申请号：US17576052
申请日：2022-01-14
发明人： Yannick Guedon
CPC分类号： H02J50/12 , H02M1/0025 , H02M7/219
摘要： A bridge rectifier is controlled by control circuitry to act a “regtifier” which both regulates and rectifies without the use of a traditional voltage regulator. To accomplish this, the gate voltages of transistors of the bridge that are on during a given phase may be modulated to dissipate excess power. Gate voltages of transistors of the bridge that are off during the given phase may alternatively or additionally be modulated to dissipate excess power. The regtifier may act as two half-bridges that each power a different voltage converter, with those voltage converters powering a battery. The voltage converters may be switched capacitor voltage converters that switch synchronously with switching of the two half-bridges as they perform rectification.
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公开(公告)号：US20240154460A1
公开(公告)日：2024-05-09
申请号：US18412718
申请日：2024-01-15
发明人： Yannick Guedon
CPC分类号： H02J50/10 , H02J7/0029 , H02J50/12 , H02J50/80
摘要： An over-voltage protection circuit and methods of operation are provided. In one embodiment, a method includes monitoring a voltage at an output of a rectifier, a voltage at an output of a voltage regulator, or a combination thereof. The method further includes determining the over-voltage condition based on the monitoring; and in response to determining the over-voltage condition, regulating the voltage at the output of the rectifier in accordance with a voltage difference between the voltage at the output of the rectifier and the voltage at the output of the voltage regulator.
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公开(公告)号：US20230333691A1
公开(公告)日：2023-10-19
申请号：US17659617
申请日：2022-04-18
发明人： MooKyung Kang , Sang Hoon Jeon
CPC分类号： G06F3/0418 , G06F3/0446
摘要： A method includes: displaying, an image on a display by sequentially displaying a plurality of frames of the image, the plurality of frames including a first frame and second frame; performing a first noise sampling scan at a plurality of frequencies at a first time location within a first frame; determining a first frequency from the plurality of frequencies with the lowest noise; performing a first mutual sensing scan at the first frequency; performing, a second noise sampling scan at the plurality of frequencies at a second time location within a second frame of the plurality of frames, the second time location being a different frame location than the first time location; determining a second frequency from the plurality of frequencies with the lowest noise, the second frequency being different from the first frequency; and performing, a second mutual sensing scan at the second frequency.
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公开(公告)号：US20230195255A1
公开(公告)日：2023-06-22
申请号：US18171582
申请日：2023-02-20
发明人： Sa Hyang Hong , Sang Hoon Jeon , Yun Sang On , Min Sang Kim
CPC分类号： G06F3/04166 , G06F3/0446 , G06F3/0442 , G06F2203/04102 , G09F9/301
摘要： 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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公开(公告)号：US11658518B2
公开(公告)日：2023-05-23
申请号：US17408824
申请日：2021-08-23
发明人： Baranidharan Karuppusamy , Thet Mon Sann , Kien Beng Tan , Supriya Raveendra Hegde , Huiqiao He , Teerasak Lee
摘要： 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：US20230013804A1
公开(公告)日：2023-01-19
申请号：US17374560
申请日：2021-07-13
发明人： Tae-gil Kang , Sung Kyu Kim , Sa Hyang Hong , Chang Woo Lee
摘要： In an example, a display device includes a rollable display including a display side and an opposite non-display side. The rollable display includes a conductive material with a pattern disposed on the non-display side. The device includes a housing configured to house the rollable display and configured to roll in and roll out the rollable display along a first direction, and a capacitive sensor including a transmitter and a receiver electrode disposed within the housing and configured to sense the pattern.
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公开(公告)号：US11496185B2
公开(公告)日：2022-11-08
申请号：US17024270
申请日：2020-09-17
发明人： Wenhe Zhao , Jiasheng Wang
摘要： A method for modulating a signal including operating a circuit in a first arrangement during a first operating interval and switching the circuit between the first arrangement and a second arrangement during a first modulation interval to vary a load on the circuit to produce a first amplitude shift keying (ASK) signal. The method further includes detecting a voltage on the circuit crossing a threshold level and operating the circuit in the second arrangement during a second operating interval. The method also includes switching the circuit between the second arrangement and the first arrangement during a second modulation interval to vary the load on the circuit to produce a second ASK signal.
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公开(公告)号：US20220140744A1
公开(公告)日：2022-05-05
申请号：US17576120
申请日：2022-01-14
发明人： Yannick GUEDON
摘要： A bridge rectifier and associated control circuitry collectively form a “regtifier” which rectifies an input time varying voltage and regulates the rectified output voltage produced without the use of a traditional voltage regulator. 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). 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. This modulation is based upon both a voltage feedback signal and a current feedback signal.
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公开(公告)号：US20220091164A1
公开(公告)日：2022-03-24
申请号：US17492210
申请日：2021-10-01
摘要： A circuit includes a tank capacitor coupled between first and second nodes, and a sense resistor having a first terminal coupled to the first node and a second terminal coupled to a regulator input. A switching circuit has first and second inputs coupled to the first and second terminals of the sense resistor. A gain stage has first and second inputs capacitively coupled to first and second outputs of the switching circuit. An analog-to-digital converter receives the output of the gain stage, and receives first and second differential voltages. A reference voltage generator has a temperature independent current source coupled to source current to a reference resistor, the first differential reference voltage being formed across the reference resistor. The reference resistor and sense resistor are located sufficiently close to one another on a single common substrate such that they remain at substantially a same temperature.
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公开(公告)号：US20220085848A1
公开(公告)日：2022-03-17
申请号：US17024270
申请日：2020-09-17
发明人： Wenhe Zhao , Jiasheng Wang
摘要： A method for modulating a signal including operating a circuit in a first arrangement during a first operating interval and switching the circuit between the first arrangement and a second arrangement during a first modulation interval to vary a load on the circuit to produce a first amplitude shift keying (ASK) signal. The method further includes detecting a voltage on the circuit crossing a threshold level and operating the circuit in the second arrangement during a second operating interval. The method also includes switching the circuit between the second arrangement and the first arrangement during a second modulation interval to vary the load on the circuit to produce a second ASK signal.
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