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公开(公告)号：US09727183B2
公开(公告)日：2017-08-08
申请号：US14477198
申请日：2014-09-04
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： San Ho Byun , Jun Chul Park , Ki Duk Kim , Yoon Kyung Choi
CPC classification number: G06F3/044 , G06F3/0416
Abstract: A method of operating a touch screen sensor integrated circuit includes: receiving a plurality of current signals through a plurality of pins, wherein each current signal is generated according to mutual capacitance in response to a modulation signal; sensing the current signals and generating a plurality of sensed current signals corresponding to each of the current signals; and generating a plurality of subtracted current signals, wherein each subtracted current signal is generated by performing a subtraction on sensed current signals corresponding to a pair of the pins.
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公开(公告)号：US10082916B2
公开(公告)日：2018-09-25
申请号：US15201532
申请日：2016-07-04
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Bum Soo Kim , Jun Chul Park , Hyun Kyu Ouh , Cha Dong Kim , San Ho Byun , Jin Chul Lee , Yoon Kyung Choi
CPC classification number: G06F3/044 , G06F3/0418
Abstract: A touch screen controller for cancelling an offset capacitance of a capacitive touch screen panel includes a code generator configured to generate a time-invariant digital code and a time-variant digital code during an offset cancellation time. A switched-capacitor array converts the time-invariant digital code and the time-variant digital code into an amount of electric charges corresponding to the offset capacitance.
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3.发明授权公开(公告)号：US11340732B2
公开(公告)日：2022-05-24
申请号：US16587862
申请日：2019-09-30
Applicant: Samsung Electronics Co., Ltd.
Inventor： Jin Chui Lee , San Ho Byun , Yoon Kyung Choi , Choong Hoon Lee , Bum Soo Kim , Ho Suk Na , Dong Wook Lim
Abstract: The present inventive concepts relate to a noise compensation device and method of a touch-sensing panel, and to a noise avoiding device and method. The noise compensation device of a touch-sensing device according to some example embodiments includes: a noise compensation signal generator configured to generate mutually different noise compensation signals for at least portions of first to Nth channels included in the touch-sensing panel; and a noise cancelling signal output circuit configured to generate noise-compensated reception signals based on the mutually different noise compensation signals and provide the noise-compensated reception signals to each of at least two channels among the first to Nth channels, wherein N is an integer two or greater.
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4.发明授权公开(公告)号：US09886136B2
公开(公告)日：2018-02-06
申请号：US15189647
申请日：2016-06-22
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Jun Chul Park , Bum Soo Kim , Kyeong Gon Lee , Cha Dong Kim , San Ho Byun , Jin Chul Lee , Yoon Kyung Choi
CPC classification number: G06F3/0418 , G06F3/044
Abstract: A touch screen controller controlling a capacitive touch screen includes a first comparator that compares a reference signal with a sensing signal, and generates a first output signal. The capacitive touch screen includes capacitive touch sensors connected to a sensing line and a drive line, and that sense a touch event. The sensing signal is output from the sensing line. The touch screen controller further includes a filter that generates a second output signal by integrating the first output signal in each sensing cycle of the filter, an analog-to-digital converter that converts the second output signal to a digital signal, and a controller that determines at least one of whether a noise is generated and whether the touch event is generated based on a reference digital signal and the digital signal, and that adjusts the number of the sensing cycles of the filter based on a result of the determination.
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