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公开(公告)号：US20180011596A1
公开(公告)日：2018-01-11
申请号：US15207105
申请日：2016-07-11
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Lokesh Kumar Korapati , Manivannan Ponnarasu , Mythreyi Nagarajan
CPC classification number: G06F3/0418 , G06F3/044 , G06F2203/04104
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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公开(公告)号：US09817530B2
公开(公告)日：2017-11-14
申请号：US14840556
申请日：2015-08-31
Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD
Inventor： Kusuma Adi Ningrat , Lokesh Kumar Korapati , Jerry Kim
CPC classification number: G06F3/044 , G06F3/0418
Abstract: An electronic device may include a touchscreen having sensing capacitors, and readout circuitry. The readout circuitry may be configured to accumulate a sample set from each sensing capacitor, divide the sample set into sample subsets, remove a given sample subset when the given sample subset exceeds a threshold, and process remaining sample subsets for touch input.
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公开(公告)号：US20170293394A1
公开(公告)日：2017-10-12
申请号：US15093878
申请日：2016-04-08
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Rooney Kim , Lokesh Kumar Korapati
CPC classification number: G06F3/0418 , G06F3/044
Abstract: A method of compensated touch data values disclosed herein includes acquiring touch data values about a dead sensing zone of a touch screen, and determining a peak value of those touch data values. Then, a new peak value is calculated as a function of an average of the peak value and another value of the touch data value, and a sharpness value for the dead sensing zone is generated if a second highest value of the touch data values is less than the new peak value. Thereafter, compensated touch data values are generated for the dead sensing zone if the second highest value is greater than the new peak value.
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公开(公告)号：US10209831B2
公开(公告)日：2019-02-19
申请号：US15847266
申请日：2017-12-19
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Rooney Kim , Lokesh Kumar Korapati
Abstract: A method of compensated touch data values disclosed herein includes acquiring touch data values about a dead sensing zone of a touch screen, and determining a peak value of those touch data values. Then, a new peak value is calculated as a function of an average of the peak value and another value of the touch data value, and a sharpness value for the dead sensing zone is generated if a second highest value of the touch data values is less than the new peak value. Thereafter, compensated touch data values are generated for the dead sensing zone if the second highest value is greater than the new peak value.
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公开(公告)号：US20180107340A1
公开(公告)日：2018-04-19
申请号：US15847266
申请日：2017-12-19
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Rooney Kim , Lokesh Kumar Korapati
CPC classification number: G06F3/0418 , G06F3/044
Abstract: A method of compensated touch data values disclosed herein includes acquiring touch data values about a dead sensing zone of a touch screen, and determining a peak value of those touch data values. Then, a new peak value is calculated as a function of an average of the peak value and another value of the touch data value, and a sharpness value for the dead sensing zone is generated if a second highest value of the touch data values is less than the new peak value. Thereafter, compensated touch data values are generated for the dead sensing zone if the second highest value is greater than the new peak value.
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Patent Agency Ranking
6.发明授权Capacitive touch screen display system including circuitry to address display perturbations induced by panel sensing 有权电容式触摸屏显示系统，包括用于解决由面板感测引起的显示扰动的电路公开(公告)号：US09524697B2
公开(公告)日：2016-12-20
申请号：US14474960
申请日：2014-09-02
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Kusuma Adi Ningrat , Giuseppe Noviello , Jenn Woei Soo , Lokesh Kumar Korapati
CPC classification number: G09G5/12 , G06F3/044 , G09G2320/0247
Abstract: A video display includes a video display panel and a video display drive circuit configured to control a display on condition. A touch screen includes a touch screen panel (mounted on top of the video display panel) and a touch panel control and sense circuit configured to operate the touch screen panel in a self-capacitance mode. The touch panel control and sense circuit includes sense drive circuits configured to generate sense drive signals for application to sense lines of the touch screen panel. A controller controls actuation of the sense drive circuits so that the sense drive signals are synchronized to the display on condition. In an implementation, the leading edges of the sense drive signals are synchronized to the display on condition. In another implementation, a window is synchronized to the display on condition and the leading edges of the sense drive signals exhibit jitter within the window.
Abstract translation: 视频显示器包括视频显示面板和视频显示驱动电路，视频显示驱动电路被配置为控制显示状态。 触摸屏包括触摸屏面板（安装在视频显示面板的顶部）以及触摸面板控制和感测电路，被配置为以自电容模式操作触摸屏面板。 触摸面板控制和感测电路包括感测驱动电路，其被配置为产生感测驱动信号以用于感测触摸屏面板的线。 控制器控制感测驱动电路的致动，使得感测驱动信号在状态下与显示器同步。 在一个实现中，感测驱动信号的前沿在状态下与显示器同步。 在另一实现中，窗口在条件下与显示器同步，并且感测驱动信号的前沿在窗口内呈现抖动。
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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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公开(公告)号：US09874974B2
公开(公告)日：2018-01-23
申请号：US15093878
申请日：2016-04-08
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Rooney Kim , Lokesh Kumar Korapati
CPC classification number: G06F3/0418 , G06F3/044
Abstract: A method of compensated touch data values disclosed herein includes acquiring touch data values about a dead sensing zone of a touch screen, and determining a peak value of those touch data values. Then, a new peak value is calculated as a function of an average of the peak value and another value of the touch data value, and a sharpness value for the dead sensing zone is generated if a second highest value of the touch data values is less than the new peak value. Thereafter, compensated touch data values are generated for the dead sensing zone if the second highest value is greater than the new peak value.
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9.发明申请公开(公告)号：US20160062546A1
公开(公告)日：2016-03-03
申请号：US14474960
申请日：2014-09-02
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Kusuma Adi Ningrat , Giuseppe Noviello , Jenn Woei Soo , Lokesh Kumar Korapati
CPC classification number: G09G5/12 , G06F3/044 , G09G2320/0247
Abstract: A video display includes a video display panel and a video display drive circuit configured to control a display on condition. A touch screen includes a touch screen panel (mounted on top of the video display panel) and a touch panel control and sense circuit configured to operate the touch screen panel in a self-capacitance mode. The touch panel control and sense circuit includes sense drive circuits configured to generate sense drive signals for application to sense lines of the touch screen panel. A controller controls actuation of the sense drive circuits so that the sense drive signals are synchronized to the display on condition. In an implementation, the leading edges of the sense drive signals are synchronized to the display on condition. In another implementation, a window is synchronized to the display on condition and the leading edges of the sense drive signals exhibit jitter within the window.
Abstract translation: 视频显示器包括视频显示面板和视频显示驱动电路，视频显示驱动电路被配置为控制显示状态。 触摸屏包括触摸屏面板（安装在视频显示面板的顶部）以及触摸面板控制和感测电路，被配置为以自电容模式操作触摸屏面板。 触摸面板控制和感测电路包括感测驱动电路，其被配置为产生感测驱动信号以用于感测触摸屏面板的线。 控制器控制感测驱动电路的致动，使得感测驱动信号在状态下与显示器同步。 在一个实现中，感测驱动信号的前沿在状态下与显示器同步。 在另一实现中，窗口在条件下与显示器同步，并且感测驱动信号的前沿在窗口内呈现抖动。
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公开(公告)号：US10599276B2
公开(公告)日：2020-03-24
申请号：US16162925
申请日：2018-10-17
Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD
Inventor： Praveesh Chandran , Lokesh Kumar Korapati , Mythreyi Nagarajan
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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