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公开(公告)号:US10735011B2
公开(公告)日:2020-08-04
申请号:US16002209
申请日:2018-06-07
发明人: Ohjo Kwon , Gyu-Hyeong Cho , Ki-Duk Kim , Ji-Su Choi
摘要: A digital-to-analog converter having a structure that converter may decrease an effect of a mismatch between elements and decrease a quantity of the elements. The digital-to-analog converter includes a multiplexer configured to output a first voltage or a second voltage corresponding to an input bit as an input voltage and a recursive switched circuit configured to alternately receive the input voltage and a reference voltage and to output an average value of the input voltage and the reference voltage as an output voltage.
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公开(公告)号:US10034085B2
公开(公告)日:2018-07-24
申请号:US15345926
申请日:2016-11-08
发明人: Gyu-Hyeong Cho , Ji-Hun Lee
摘要: A class-D amplifier includes an error amplification circuit, a duty signal generator, a level selection circuit, a driver and control block and an output stage. The class-D amplifier divides peal levels of an error signal into multi-level and changes a scheme for modulating the error signal when the error signal crosses each level boundary of the multi-level thereby to have an effect such as the error signal is folded. Therefore, the class-D amplifier drives output nodes with multi-level and thus the class-D amplifier may increasing efficiency while reducing EMI.
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公开(公告)号:US09691329B2
公开(公告)日:2017-06-27
申请号:US13929722
申请日:2013-06-27
发明人: Oh-Jo Kwon , Won-Tae Choi , Hee-Sun Ahn , Bo-Yeon Kim , Gyu-Hyeong Cho , Hyun-Sik Kim , Jun-Suk Bang
IPC分类号: G09G3/30 , G09G3/3291 , G09G3/3233
CPC分类号: G09G3/3291 , G09G3/3233 , G09G2300/0819 , G09G2300/0842 , G09G2300/0861 , G09G2320/0295 , G09G2320/045 , G09G2320/0693
摘要: An organic light emitting display device includes pixels positioned at crossing regions between data lines and scan lines, each of the pixels including an organic light emitting diode, a scan driver configured to supply a scan signal to scan lines, a data driver configured to drive the data lines, wherein the data driver includes, in each channel, a supply part comprising a digital-to-analog converter configured to generate data signals using second data supplied from outside in a driving period, and a deterioration part configured to measure deterioration information of the organic light emitting diode using the digital-to-analog converter in a sensing period.
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14.
公开(公告)号:US20160372050A1
公开(公告)日:2016-12-22
申请号:US14983512
申请日:2015-12-29
发明人: Oh-Jo Kwon , Ji-Woong Kim , Choong-Sun Shin , Joo-Hyung Lee , Jun-Suk Bang , Gyu-Hyeong Cho
IPC分类号: G09G3/3283 , G09G3/20 , G09G3/3233
CPC分类号: G09G3/3283 , G09G3/2007 , G09G3/3233 , G09G3/3291 , G09G2310/027 , G09G2310/0272 , G09G2310/0291 , G09G2310/0294 , G09G2320/0295 , G09G2320/045 , G09G2330/021
摘要: A data driver includes a data signal converter to convert image data to a data signal, an output buffer to output the data signal to a data line, a first cascode circuit connected to the output buffer and including a plurality of transistors, a first noise attenuator connected to a first node between the output buffer and the first cascode circuit, and to attenuate a first current noise, a second cascode circuit connected to the output buffer and including a plurality of transistors, a second noise attenuator connected a second node between the output buffer and the second cascode circuit, and to attenuate a second current noise, a current integrator to generate an integrated voltage by integrating a first current flowing through the first cascode circuit and a second current flowing through the second cascade circuit, and an analog-digital converter (ADC) to convert the integrated voltage to a digital signal.
摘要翻译: 数据驱动器包括将图像数据转换为数据信号的数据信号转换器,将数据信号输出到数据线的输出缓冲器,连接到输出缓冲器并包括多个晶体管的第一共源共栅电路,第一噪声衰减器 连接到所述输出缓冲器和所述第一共源共栅电路之间的第一节点,并且衰减第一电流噪声,连接到所述输出缓冲器并且包括多个晶体管的第二共源共同电路;第二噪声衰减器,在所述输出 缓冲器和第二共源共栅电路,并且为了衰减第二电流噪声,电流积分器通过积分流过第一共源共栅电路的第一电流和流过第二级联电路的第二电流来产生积分电压,以及模拟数字 转换器(ADC)将集成电压转换为数字信号。
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公开(公告)号:US09875693B2
公开(公告)日:2018-01-23
申请号:US14983512
申请日:2015-12-29
发明人: Oh-Jo Kwon , Ji-Woong Kim , Choong-Sun Shin , Joo-Hyung Lee , Jun-Suk Bang , Gyu-Hyeong Cho
IPC分类号: G09G5/00 , G09G3/3283 , G09G3/3233 , G09G3/20
CPC分类号: G09G3/3283 , G09G3/2007 , G09G3/3233 , G09G3/3291 , G09G2310/027 , G09G2310/0272 , G09G2310/0291 , G09G2310/0294 , G09G2320/0295 , G09G2320/045 , G09G2330/021
摘要: A data driver includes a data signal converter to convert image data to a data signal, an output buffer to output the data signal to a data line, a first cascode circuit connected to the output buffer and including a plurality of transistors, a first noise attenuator connected to a first node between the output buffer and the first cascode circuit, and to attenuate a first current noise, a second cascode circuit connected to the output buffer and including a plurality of transistors, a second noise attenuator connected a second node between the output buffer and the second cascode circuit, and to attenuate a second current noise, a current integrator to generate an integrated voltage by integrating a first current flowing through the first cascode circuit and a second current flowing through the second cascade circuit, and an analog-digital converter (ADC) to convert the integrated voltage to a digital signal.
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16.
公开(公告)号:US20170149403A1
公开(公告)日:2017-05-25
申请号:US15345926
申请日:2016-11-08
发明人: Gyu-Hyeong Cho , Ji-Hun Lee
CPC分类号: H04R3/007 , H03F3/183 , H03F3/2173 , H03F3/45192 , H03F3/4565 , H03F2200/03 , H03F2200/351 , H03F2200/421 , H03F2200/555 , H03F2200/78 , H03G3/3005 , H03G3/3089
摘要: A class-D amplifier includes an error amplification circuit, a duty signal generator, a level selection circuit, a driver and control block and an output stage. The class-D amplifier divides peal levels of an error signal into multi-level and changes a scheme for modulating the error signal when the error signal crosses each level boundary of the multi-level thereby to have an effect such as the error signal is folded. Therefore, the class-D amplifier drives output nodes with multi-level and thus the class-D amplifier may increasing efficiency while reducing EMI.
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公开(公告)号:US10126766B2
公开(公告)日:2018-11-13
申请号:US15216147
申请日:2016-07-21
发明人: Gyu-Hyeong Cho , Yongjin Lee , Dae-Yong Kim , Sangho Kim
IPC分类号: G05F1/10 , G05F3/02 , G05F1/56 , H03K5/1534 , H03K21/02
摘要: A low dropout voltage (LDO) regulator including: a coarse loop circuit configured to receive an input voltage, generate a coarse code and adjust a coarse current according to the coarse code; a digital controller configured to receive the coarse code and generate a fine loop control signal according to the coarse code; and a fine loop circuit configured to receive the input voltage and the fine loop control signal and adjust a fine current according to the input voltage and the fine loop control signal, wherein the coarse current and the fine current adjust a level of an output voltage.
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18.
公开(公告)号:US20130099591A1
公开(公告)日:2013-04-25
申请号:US13659358
申请日:2012-10-24
发明人: Sung-Ku Yeo , Gyu-Hyeong Cho , Se-Ho Park , Se-Ki Kim , Young-Min Lee , Jun-Han Choi
IPC分类号: H01F38/14
CPC分类号: H02M7/217 , H02J7/025 , H02J50/12 , H02M3/3376 , Y02B70/1433 , Y02B70/1441
摘要: Provided is a received power conversion device for a resonant wireless charging system, including a wireless power receiver for receiving wireless power from a wireless power transmission device, a rectifier for rectifying power in an Alternating Current (AC) form received in the wireless power receiver into a Direct Current (DC), a free-wheeling switching unit for switching according to a switching control signal to form a path for free-wheeling the power in the AC form, a feedback circuit fed back with an output signal of a corresponding power conversion device to detect a level of the output signal, and a controller for controlling switching of the free-wheeling switching unit according to the output level detected by the feedback circuit.
摘要翻译: 提供一种用于谐振无线充电系统的接收电力转换装置,包括用于从无线电力传输装置接收无线电力的无线电力接收器,用于以无线电力接收器中接收的交流电(AC)形式整流电力的整流器, 直流(DC),用于根据切换控制信号切换以形成用于以AC形式续航功率的路径的续流切换单元,反馈电路,反馈电路具有对应的功率转换的输出信号 用于检测输出信号的电平的装置,以及用于根据由反馈电路检测的输出电平来控制续流切换单元的切换的控制器。
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公开(公告)号:US20150309655A1
公开(公告)日:2015-10-29
申请号:US14696755
申请日:2015-04-27
发明人: Sung-Soo Park , Chang-Byung Park , Gyu-Hyeong Cho
CPC分类号: G06F3/0416 , G06F3/0418 , G06F3/044
摘要: A device for sensing a touch by measuring a variation in capacitance according to a contact of an object, and measuring a contact position of the object is provided. The device includes a touch screen panel comprising grid electrodes forming a plurality of electrode patterns, the grid electrodes serving as Tx antennas or Rx antennas, a Tx circuit unit connected with the grid electrode to apply an electric signal to the touch screen panel unit, an Rx circuit unit connected with the grid electrodes to sense variations in the capacitance in the plurality of electrode patterns, and a controller configured to control the touch screen panel unit, the Tx circuit unit, and the Rx circuit unit. The Rx circuit unit includes a first operational amplifier, a first feedback capacitor, and a second feedback capacitor. The first feedback capacitor and the second feedback capacitor are connected with the first operational amplifier. Both terminals of the first feedback capacitor and the first operational amplifier are connected through a first switching unit. The first switching unit includes a 1-1 switch and a 1-2 switch, which are controlled to be short-circuited at a first phase of the electric signal. Both terminals of the second feedback capacitor and the first operational amplifier are connected through a second switching unit. The second switching unit includes a 2-1 switch and a 2-2 switch, which are controlled to be short-circuited at a second phase of the electric signal. The controller is further configured to short-circuit the first switching unit and the second switching unit, at different times, to store charges in each of the first feedback capacitor and the second feedback capacitor.
摘要翻译: 提供了一种用于通过根据物体的接触测量电容变化并测量物体的接触位置来感测触摸的装置。 该装置包括触摸屏面板,其包括形成多个电极图案的栅格电极,用作Tx天线或Rx天线的栅格电极,与栅电极连接以向触摸屏面板单元施加电信号的Tx电路单元, Rx电路单元,与栅电极连接,以检测多个电极图案中的电容的变化;以及控制器,被配置为控制触摸屏面板单元,Tx电路单元和Rx电路单元。 Rx电路单元包括第一运算放大器,第一反馈电容器和第二反馈电容器。 第一反馈电容器和第二反馈电容器与第一运算放大器相连。 第一反馈电容器和第一运算放大器的两个端子通过第一开关单元连接。 第一开关单元包括1-1开关和1-2开关,其被控制为在电信号的第一相处短路。 第二反馈电容器和第一运算放大器的两个端子通过第二开关单元连接。 第二开关单元包括2-1开关和2-2开关,其被控制为在电信号的第二相处短路。 该控制器还被配置为在不同时间使第一开关单元和第二开关单元短路,以在第一反馈电容器和第二反馈电容器的每一个中存储电荷。
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公开(公告)号:US10678280B2
公开(公告)日:2020-06-09
申请号:US16170124
申请日:2018-10-25
发明人: Gyu-Hyeong Cho , Yongjin Lee , Dae-Yong Kim , Sangho Kim
IPC分类号: G05F1/56 , H03K5/1534 , H03K21/02
摘要: A low dropout voltage (LDO) regulator including: a coarse loop circuit configured to receive an input voltage, generate a coarse code and adjust a coarse current according to the coarse code; a digital controller configured to receive the coarse code and generate a fine loop control signal according to the coarse code; and a fine loop circuit configured to receive the input voltage and the fine loop control signal and adjust a fine current according to the input voltage and the fine loop control signal, wherein the coarse current and the fine current adjust a level of an output voltage.
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