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公开(公告)号：US10747384B1
公开(公告)日：2020-08-18
申请号：US16528824
申请日：2019-08-01
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Tae-gil Kang , Aiden Jeon
IPC: G06F3/044 , G06F3/0488
Abstract: A capacitive touch matrix has first conductive row elements spaced apart from one another, and first row interconnection circuitry electrically connects the first conductive row elements. Second conductive row elements are spaced apart from one another, and second row interconnection circuitry electrically connects the second conductive row elements. First conductive column elements are positioned between two adjacent ones of the first conductive row elements, the first conductive column elements being spaced apart from one another. Second conductive column elements are positioned in a same column as the first conductive column elements and between the two adjacent ones of the first conductive row elements, the second conductive column elements being spaced apart from one another. First column interconnection circuitry electrically connects each first conductive column element, and second column interconnection circuitry electrically connects each conductive column element. The conductive elements and interconnection circuitries are coplanar with one another.
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公开(公告)号：US10690721B2
公开(公告)日：2020-06-23
申请号：US16128645
申请日：2018-09-12
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Beng-Heng Goh
Abstract: A glitch detector includes an input flip-flop clocked by a clock signal and having a non-inverting data output, an inverting data output, and a data input receiving input from the inverting data output, the input flip-flop generating a divided version of the clock signal at the non-inverting data output. A configurable delay chain receives the divided version of the clock signal and generates a delayed version of the divided version of the clock signal as a delay output. An intermediate flip-flop clocked by the clock signal has a data input receiving the delay output, the intermediate flip-flop generating an intermediate output as a function of the delay output. A logic circuit receives the divided version of the clock signal and the intermediate output, and generates a glitch detect signal by performing a logical operation on the divided version of the clock signal and the intermediate output.
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公开(公告)号：US20200133411A1
公开(公告)日：2020-04-30
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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公开(公告)号：US10599257B2
公开(公告)日：2020-03-24
申请号：US16033730
申请日：2018-07-12
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Aiden Jeon , Kai Lim
Abstract: Disclosed herein is a touch screen controller including input circuitry operating a touch screen, and processing circuitry cooperating with the input circuitry to acquire mutual touch data and self touch data from the touch screen, sum values of the mutual touch data to produce mutual sums, normalize the mutual sums and the self touch data, and calculate differences between the normalized self touch data and the normalized mutual sums. The touch screen controller enters into a floating mode if a largest difference that is positive is greater than a positive difference threshold and if a smallest difference value that is negative is less than a negative difference threshold, but enters a non-floating mode if the largest difference that is positive is less than the positive difference threshold or if the smallest difference value that is negative is less than the negative difference threshold.
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公开(公告)号：US20200042140A1
公开(公告)日：2020-02-06
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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Patent Agency Ranking
36.发明申请公开(公告)号：US20200014914A1
公开(公告)日：2020-01-09
申请号：US16502483
申请日：2019-07-03
Inventor： Lookah CHUA , Jansen Reyes DUEY , Tarek LULE , Mathieu THIVIN
IPC: H04N17/00 , H04N5/369 , H04N5/3745
Abstract: An electronic device includes an array of image pixels, with the array of image pixels having inputs coupled to control lines and outputs coupled to output lines, and at least one array of dummy pixels, with the at least one array of dummy pixels having inputs coupled to the control lines. Each dummy pixel of the at least one array of dummy pixels is configured to provide a certain output signal in an absence of a fault with at least one of the control lines or of a fault with at least one of the output lines, such that a lack of output of the certain output signal by one or more of the dummy pixels of the at least one array of dummy pixels indicates the fault.
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公开(公告)号：US10530348B2
公开(公告)日：2020-01-07
申请号：US16273317
申请日：2019-02-12
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Beng-Heng Goh , Yi Ren Chin
Abstract: An electronic device includes clock generation circuitry. The clock generation circuitry includes a first flip flop receiving as input a device clock and being triggered by an input clock and a second flip flop receiving, as input, output from the first flip flop and being triggered by the input clock. A first inverter receives output from the first flip flop as input and a second inverter receives output from the second flip flop as input. A first AND gate receives, as input, output from the second flip flop and the first inverter, and generates a first clock as output. A second AND gate receives, as input, output from the first flip flop and the second inverter, and generates a second clock as output.
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公开(公告)号：US20190356249A1
公开(公告)日：2019-11-21
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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公开(公告)号：US10444899B2
公开(公告)日：2019-10-15
申请号：US15412824
申请日：2017-01-23
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Manivannan Ponnarasu
Abstract: A touch screen controller includes input circuitry receiving touch data from a touch screen, and processing circuitry. The processing circuitry determines first coordinates of a touch at a first time, based upon the received touch data. A first threshold window is set about the first coordinates, with the first threshold window having a central point at the first coordinates, and a second threshold window is set about the first coordinates, with the second threshold window having a central point at the first coordinates and being larger than the first threshold window. Second coordinates of the touch are determined at a second time, based upon the received touch data, and where the second coordinates are not within the first threshold window but are within the second threshold window, the second coordinates are corrected based upon a distance between the second coordinates and the central point of the second threshold window.
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公开(公告)号：US20190267899A1
公开(公告)日：2019-08-29
申请号：US16405861
申请日：2019-05-07
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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