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121.发明申请公开(公告)号：US20190250731A1
公开(公告)日：2019-08-15
申请号：US15893207
申请日：2018-02-09
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Manivannan Ponnarasu
Abstract: Disclosed herein is a touch screen controller operable with a touch screen. The touch screen controller includes input circuitry to receive touch data from the touch screen, and processing circuitry. The processing circuitry acquires mutual capacitance touch strength values from the touch screen, determines when the mutual capacitance touch strength values define a pre-validated donut touch pattern, and reads self capacitance touch strength values for lines that are contained within bounds of the pre-validated donut touch pattern. If the self capacitance touch strength values for lines contained within bounds of the pre-validate donut touch pattern contain a singular peak value, the processing circuitry validates the pre-validated donut touch pattern as representing a single touch.
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公开(公告)号：US10365764B2
公开(公告)日：2019-07-30
申请号：US15207105
申请日：2016-07-11
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Lokesh Kumar Korapati , Manivannan Ponnarasu , Mythreyi Nagarajan
Abstract: A method of foreign matter rejection for multi-touch capacitive touch screens includes performing touch detection in both self-capacitance mode and mutual capacitance mode. By combining information from both modes, a distinction is identified between wanted touches, such as by a finger or stylus, and unwanted touches such as by foreign matter.
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123.发明申请公开(公告)号：US20190204979A1
公开(公告)日：2019-07-04
申请号：US16220500
申请日：2018-12-14
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Cam Chung LA , Kien Beng TAN
Abstract: A device includes a touch and pressure sensitive screen having touch pressure sensors and a controller. The controller acquires touch pressure data from the plurality of touch pressure sensors. For each touch pressure sensor, the controller determines whether the touch pressure data from that touch pressure sensor is indicative of abnormal operation of that touch pressure sensor. Where no abnormal operation is indicated, the controller sums the touch pressure data from each of the touch pressure sensors to produce a touch pressure output. Where abnormal operation is indicated, the controller sums the touch pressure data from each of the touch pressure sensors and multiply the sum by a correction factor to produce the touch pressure output.
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公开(公告)号：US20190173458A1
公开(公告)日：2019-06-06
申请号：US16273317
申请日：2019-02-12
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Beng-Heng GOH , Yi Ren CHIN
CPC classification number: H03K5/1515 , G11C7/22 , G11C7/222 , G11C19/28 , G11C19/287 , H03L7/00
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：US20190050087A1
公开(公告)日：2019-02-14
申请号：US16162925
申请日：2018-10-17
Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD
Inventor： Praveesh CHANDRAN , Lokesh Kumar KORAPATI , Mythreyi NAGARAJAN
CPC classification number: G06F3/044 , G06F3/0418 , G06F2203/04102
Abstract: The present disclosure is directed to a system and method to remove common mode noise projected onto a touch sensor array from a display. The system is configured to activate two rows of electrodes at the same time, while coupling remaining rows of electrodes to ground. A first one of the two activated rows is used for detection of a touch and a second one of the two activated rows is used to detect common mode noise from the display. The common mode noise detected by the second row is removed from signals received from a plurality of columns of the touch sensor array.
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Patent Agency Ranking
126.发明申请公开(公告)号：US20190050079A1
公开(公告)日：2019-02-14
申请号：US16055922
申请日：2018-08-06
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Jay Wang , Tae-gil Kang
CPC classification number: G06F3/041662 , G06F3/0418 , G06F3/044 , G06F3/0443 , G06F3/0446
Abstract: A data frame in a touch capacitive sensing circuit includes both mutual capacitance data and self capacitance data. The mutual capacitance data and self capacitance data of the frame are filtered to define mutual capacitance and self capacitance islands. Centroids of the mutual capacitance and self capacitance islands are calculated and then processed in a weighted mixing operation to produce a hybrid centroid that more accurately locates the coordinates of a detected touch/hover.
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公开(公告)号：US10175807B2
公开(公告)日：2019-01-08
申请号：US14974299
申请日：2015-12-18
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Praveesh Chandran , Manivannan Ponnarasu , Mythreyi Nagarajan
IPC: G06F3/041 , G06F3/0354 , G06F3/044
Abstract: An electronic device disclosed herein includes a touch screen controller to identify an island i.e., a matrix of acquired touch data values, the island including adjacent touch data values indicating a potential touch of a touch sensitive screen. A first sharpness of the island is calculated using a first normalization type and not a second normalization type. A second sharpness of the island is calculated using the first and second normalization types if the first sharpness is greater than the sharpness threshold. A dynamic variance threshold is determined as a function of the second sharpness. A dynamic strength threshold is determined as a function of the second sharpness if a variance of the island is greater than the dynamic variance threshold, and the island is determined to be a valid stylus island if the peak strength is greater than the dynamic strength threshold.
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公开(公告)号：US10079593B2
公开(公告)日：2018-09-18
申请号：US15811223
申请日：2017-11-13
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Beng-Heng Goh
CPC classification number: H03K5/15033 , H03K23/502 , H03L7/16 , H03L7/183 , H03L7/1974
Abstract: A circuit includes a counter circuit, a logic circuit, and a clock divider. The counter circuit includes a clock divider counter to be loaded with most significant bits of a divider value, and decremented at a same edge of each pulse of a clock signal. The logic circuit compares a value contained in the divider counter to a reference value and generates an end count signal as a function of the value contained in the divider counter matching the reference value, and transitions a toggle signal at a same edge of each pulse of the end count signal. The clock divider counter is reloaded with the most significant bits of the divider value as a function of the end count signal. The clock divider generates a divided version of the clock signal as a function of the toggle signal.
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公开(公告)号：US20180210607A1
公开(公告)日：2018-07-26
申请号：US15412824
申请日：2017-01-23
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Manivannan Ponnarasu
CPC classification number: G06F3/0418 , G06F3/044
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：US20180194614A1
公开(公告)日：2018-07-12
申请号：US15915454
申请日：2018-03-08
Applicant: STMicroelectronics Asia Pacific Pte Ltd , STMicroelectronics S.r.l. , STMicroelectronics, Inc.
Inventor： Teck Khim Neo , Mauro Pasetti , Franco Consiglieri , Luca Molinari , Andrea Nicola Colecchia , Simon Dodd
CPC classification number: B81B7/008 , B05B1/24 , B05B17/06 , B41J2/04501 , B41J2/04541 , B41J2/04543 , B41J2/14016 , B41J2/14072 , B81B2201/05 , B81B2207/012 , B81B2207/091
Abstract: The present disclosure is directed to a microfluidic die that includes ejection circuitry and one time programmable memory with a minimal number of contact pads to external devices. The die includes a relatively large number of nozzles and a relatively small number of contact pads. The die includes decoding circuitry that utilizes the small number of contact pads to control the drive and ejection of the nozzles and the reading/writing of the memory with the same contact pads.
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