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公开(公告)号：US10540041B2
公开(公告)日：2020-01-21
申请号：US15405343
申请日：2017-01-13
发明人： Jin-Bong Kim , Yoon-Kyung Choi , Min-Sung Kim , San-Ho Byun , Hwi-Taek Chung , Eung-Man Kim , Cha-Dong Kim
摘要： Provided are a touch processor for performing active protection, a touch display driver integrated circuit (DDI) chip including the touch processor, and a method of operating the touch processor. The touch processor for driving a touch panel including a sensing cell includes a driving circuit configured to provide a driving signal to the touch panel, and a capacitance controller. The capacitance controller is configured to generate a switch control signal for controlling a switch connected to a sensing unit included in the sensing cell, and a compensation signal having a different waveform than the driving signal, so as to reduce a value of an ambient capacitance component of the sensing cell.
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公开(公告)号：US10254903B2
公开(公告)日：2019-04-09
申请号：US15096859
申请日：2016-04-12
发明人： Hyoung-Rae Kim , Yoon-Kyung Choi , Hwa-Hyun Cho , Sang-Woo Kim , Hae-Yong Ahn , Hyung-Dal Kwon , Jong-Kang Park , San-Ho Byun , Jae-suk Yu
IPC分类号： G09G1/00 , G06F3/044 , G06F3/041 , H01L27/32 , G06F1/3215 , G06F1/3237 , G06F1/3234 , G09G3/20 , G02F1/1333
摘要： A touch controller includes a touch data generator that is connected to a plurality of sensing lines, the touch data generator sensing a change in capacitance of a sensing unit connected to each of the sensing lines and generating touch data by processing the sensing signal corresponding to the result of sensing; and a signal processor that controls a timing of generating the touch data by receiving at least one piece of timing information for driving a display panel from a timing controller, and then providing either the timing information or a signal generated from the timing information as a control signal to the touch data generator.
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3.发明授权Digital filter, touch sense device including the digital filter, and method for performing the digital filtering 有权数字滤波器，包括数字滤波器的触摸感测装置以及用于执行数字滤波的方法公开(公告)号：US09292125B2
公开(公告)日：2016-03-22
申请号：US14185624
申请日：2014-02-20
发明人： Ki-Duk Kim , Yoonkyung Choi , Junchul Park , San-Ho Byun , Minchul Lee , Ji-Sung Jung
CPC分类号： G06F3/0416 , G06F3/0412 , G06F3/044 , G06F2203/04112 , H03M3/504
摘要： A touch sensing device including digital filter is provided. The touch sensing device includes a touch panel and a touch sensor configured to sensing a touch through the touch panel. The touch sensor includes a plurality of sensing units connected to the touch panel through a plurality of sensing lines. Each of the plurality of sensing units includes a digital filter configured to generate a valid filtered value at a time and invalid filtered value at other times by performing an operation on a plurality of input digital samples and a plurality of filter coefficients.
摘要翻译： 提供了包括数字滤波器的触摸感测装置。 触摸感测装置包括触摸面板和被配置为感测通过触摸面板的触摸的触摸传感器。 触摸传感器包括通过多个感测线连接到触摸面板的多个感测单元。 多个感测单元中的每一个包括数字滤波器，其被配置为通过对多个输入数字样本和多个滤波器系数执行操作来一次生成有效的滤波值并且在其它时间产生无效滤波值。
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4.发明授权公开(公告)号：US09973199B2
公开(公告)日：2018-05-15
申请号：US15199010
申请日：2016-06-30
发明人： San-Ho Byun , Chadong Kim , Jinchul Lee , Bumsoo Kim , Junchul Park , Kyeonggon Lee
摘要： A touch processor circuit includes a capacitance-to-voltage converter and an analog-to-digital converter. The capacitance-to-voltage converter converts an input signal transmitted from a touch sensor into a conversion signal corresponding to a capacitance of the touch sensor. The analog-to-digital converter digitizes the conversion signal transmitted from the capacitance-to-voltage converter and generates a digital value. The analog-to-digital converter includes a first converter, a second converter, and a combination logic circuit. The first converter calculates upper bits of the digital value based on the conversion signal during a first time period. The second converter calculates lower bits of the digital value based on a residue component signal transmitted from the first converter during a second time period. The combination logic circuit combines the upper bits and the lower bits and generates the digital value.
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