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公开(公告)号：US11313844B2
公开(公告)日：2022-04-26
申请号：US16478623
申请日：2017-06-22
Inventor： Jae Joon Kim , Subin Choi , Kyeong-Hwan Park
Abstract: In a multi-channel resistance-based gas sensor system, the multi-channel array includes gas sensor channels respectively connected to resistive type gas sensors. The pre-processing unit selects a current mode, a resistance mode, or an external resistance mode, analyzes a sensing value obtained from any one of the gas sensor channels based on the selected mode and outputs a voltage value corresponding thereto. The analog-to-digital converter (ADC) converts the voltage value to digital data. The control unit controls the pre-processing unit to execute one of the current mode for analyzing a sensing value smaller than or equal to a preset first resistance value, the external resistance mode for analyzing a sensing value greater than or equal to a preset second resistance value greater than the preset first resistance value and the resistance mode for analyzing a sensing value between the preset resistance first value and the preset second resistance value.
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公开(公告)号：US09377910B2
公开(公告)日：2016-06-28
申请号：US14027053
申请日：2013-09-13
Inventor： Soon-Sung Ahn , Franklin Bien , Jae-Joon Kim , Sang-Hyune Heo , Kyeong-Hwan Park
CPC classification number: G06F3/044
Abstract: A touch sensing apparatus includes a touch screen panel including first electrodes along a first direction and second electrodes along a second direction crossing the first direction to form capacitances with the first electrodes, a driving circuit configured to supply a driving signal to the first electrodes; and a sensing circuit configured to detect output sensing signals from the second electrodes and recognize a touch input based on the output sensing signals. The sensing circuit includes a switching unit configured to modulate the output sensing signals by providing codes as respective input sensing signals to the second electrodes, an amplifying unit configured to amplify the modulated sensing signals, an analog-digital conversion unit configured to convert the amplified sensing signals into digital sensing signals, and a controller configured to demodulate the digital sensing signals and detect a touch input and its position from the demodulated sensing signals.
Abstract translation: 触摸感测装置包括：触摸屏面板，包括沿着第一方向的第一电极和沿着与所述第一方向交叉的第二方向的第二电极，以与所述第一电极形成电容;驱动电路，被配置为向所述第一电极提供驱动信号; 以及感测电路，被配置为检测来自所述第二电极的输出感测信号，并且基于所述输出感测信号来识别触摸输入。 感测电路包括：开关单元，被配置为通过向第二电极提供作为各个输入感测信号的代码来调制输出感测信号;放大单元，被配置为放大调制的感测信号;模数转换单元，被配置为将放大的感测 信号转换成数字感测信号，以及控制器，被配置为解调数字感测信号并且从解调的感测信号检测触摸输入及其位置。
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公开(公告)号：US11921139B2
公开(公告)日：2024-03-05
申请号：US16655696
申请日：2019-10-17
Inventor： Jae Joon Kim , Seungmok Kim , Kyeong-Hwan Park
CPC classification number: G01R27/14 , G01R27/00 , H03F3/45179 , H03M1/34 , H03M3/04
Abstract: A differential mode converter that includes an input mode converter configured to convert an input voltage in a single-ended mode into a first differential voltage and a second differential voltage to be output, the first differential voltage and the second differential voltage being symmetric with respect to a reference voltage and having a form of a square wave; and a chopper configured to receive the first differential voltage and the second differential voltage and determine a first chopping voltage and a second chopping voltage based on the first differential voltage and the second differential voltage to output the first chopping voltage and the second chopping voltage, the first chopping voltage and the second chopping voltage being symmetric with respect to the reference voltage and having a form of a DC voltage.
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公开(公告)号：US20140313157A1
公开(公告)日：2014-10-23
申请号：US14027053
申请日：2013-09-13
Inventor： Soon-Sung Ahn , Franklin Bien , Jae-Joon Kim , Sang-Hyune Heo , Kyeong-Hwan Park
CPC classification number: G06F3/044
Abstract: A touch sensing apparatus includes a touch screen panel including first electrodes along a first direction and second electrodes along a second direction crossing the first direction to form capacitances with the first electrodes, a driving circuit configured to supply a driving signal to the first electrodes; and a sensing circuit configured to detect output sensing signals from the second electrodes and recognize a touch input based on the output sensing signals. The sensing circuit includes a switching unit configured to modulate the output sensing signals by providing codes as respective input sensing signals to the second electrodes, an amplifying unit configured to amplify the modulated sensing signals, an analog-digital conversion unit configured to convert the amplified sensing signals into digital sensing signals, and a controller configured to demodulate the digital sensing signals and detect a touch input and its position from the demodulated sensing signals.
Abstract translation: 触摸感测装置包括：触摸屏面板，包括沿着第一方向的第一电极和沿着与所述第一方向交叉的第二方向的第二电极，以与所述第一电极形成电容;驱动电路，被配置为向所述第一电极提供驱动信号; 以及感测电路，被配置为检测来自所述第二电极的输出感测信号，并且基于所述输出感测信号来识别触摸输入。 感测电路包括：开关单元，被配置为通过向第二电极提供作为各个输入感测信号的代码来调制输出感测信号;放大单元，被配置为放大调制的感测信号;模数转换单元，被配置为将放大的感测 信号转换成数字感测信号，以及控制器，被配置为解调数字感测信号并且从解调的感测信号检测触摸输入及其位置。
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