公开(公告)号：US06043810A

公开(公告)日：2000-03-28

申请号：US981177

申请日：1997-12-12

申请人： Do-youn Kim ,  Byoung-kwon An

发明人： Do-youn Kim ,  Byoung-kwon An

IPC分类号： G06F3/041 ,  G06F3/033 ,  G06F3/045 ,  G06F3/048 ,  G09G5/00

CPC分类号： G06F3/045

摘要： A digitizer controller includes a panel drive signal generator (10), a reference voltage generator (12), a first multiplexer (14) for selectively outputting either a panel drive signal or a reference voltage signal, a 4-channel driving portion (16) for generating a channel driving signal which is provided to each corner of a panel, a third multiplexer (26) for selectively outputting one of the finger touch signals and a stylus signal output from a stylus, a band pass filter, a rectifier (30) for rectifying the output of the band pass filter, a low pass filter (38) for detecting a substantial direct current component from the output of the rectifier (30), an analog-to-digital converter (44) for outputting the output of the low pass filter in synchronization with a panel driving control signal as a coordinates signal, and an interface (46). Therefore, the digitizer controller can be adopted to each of the stylus, finger touch and touch panel type digitizers, and in implementing a semiconductor integrated circuit, reliability is provided and power consumption is lowered.

摘要翻译： PCT No.PCT / KR96 / 00089 Sec。 371日期1997年12月12日 102（e）日期1997年12月12日PCT提交1996年6月12日PCT公布。 WO96 / 42068 PCT出版物 日期：1996年12月27日数字转换器控制器包括面板驱动信号发生器（10），参考电压发生器（12），用于选择性地输出面板驱动信号或参考电压信号的第一多路复用器（14） 驱动部分（16），用于产生提供给面板的每个角的通道驱动信号;第三多路复用器（26），用于选择性地输出手指触摸信号中的一个以及从触笔输出的触笔信号，带通滤波器， 整流器（30），用于对带通滤波器的输出进行整流;低通滤波器（38），用于从整流器（30）的输出端检测实质的直流分量;模数转换器（44），用于 与面板驱动控制信号同步地输出低通滤波器的输出作为坐标信号，以及接口（46）。 因此，数字转换器控制器可以被采用于触针，手指触摸和触摸面板型数字化仪中的每一个，并且在实现半导体集成电路时，提供可靠性并降低功耗。

公开(公告)号：US06489575B2

公开(公告)日：2002-12-03

申请号：US09300924

申请日：1999-04-28

申请人： Do-youn Kim

发明人： Do-youn Kim

IPC分类号： G08C2100

CPC分类号： G06F3/045

摘要： A position coordinates signal detecting circuit of a sensor panel is provided. The position coordinates signal detecting circuit of the sensor panel according to the present invention includes first through fourth resistors each of which has one end connected to one of the left upper-most edge, the left lower-most edge, the right upper-most edge, and the right lower-most edge of the sensor panel. First through fourth driving signal generators are respectively connected to the other side of the first through fourth resistors for generating a driving signal so as to drive the sensor panel. Analog switches receive first through fourth pairs of voltages respectively generated at both ends of the first through fourth resistors. The first through fourth pairs of voltage are multiplexed in response to first through fourth selecting signals to provide a multiplexed signal, and a differential amplifier for amplifies the multiplexed signal. The position coordinates detecting circuit of the sensor panel according to the present invention makes it possible to amplify the voltage difference between both end of the variable resistors. Thus, the characteristics mismatching between different amplifiers is reduced, and the position coordinates are detected accurately.

摘要翻译： 提供传感器面板的位置坐标信号检测电路。 根据本发明的传感器面板的位置坐标信号检测电路包括第一至第四电阻，每个电阻的一端连接到左上最边缘，最左下边缘，右上最边缘之一 ，以及传感器面板的最右边缘。 第一至第四驱动信号发生器分别连接到第一至第四电阻器的另一侧，用于产生驱动信号以驱动传感器面板。 模拟开关接收分别在第一至第四电阻器的两端产生的第一至第四对电压。 第一至第四对电压响应于第一至第四选择信号多路复用以提供多路复用信号，以及差分放大器，用于放大多路复用信号。 根据本发明的传感器面板的位置坐标检测电路可以放大可变电阻器的两端之间的电压差。 因此，不同放大器之间的特性失配减小，并且准确地检测位置坐标。

公开(公告)号：US08319769B2

公开(公告)日：2012-11-27

申请号：US12387601

申请日：2009-05-05

申请人： Seung-jung Lee ,  Do-youn Kim ,  Jae-hong Ko

发明人： Seung-jung Lee ,  Do-youn Kim ,  Jae-hong Ko

IPC分类号： G09G5/00

CPC分类号： G09G3/3611 ,  G09G2310/0245 ,  G09G2310/08 ,  G09G2330/02 ,  G09G2330/026

摘要： In a liquid crystal display (LCD) panel driver with a self-masking function using a power-on reset signal, and in a method of driving the same, the LCD panel driver includes a power-on reset signal generation unit that generates a power-on reset signal in response to a supply voltage applied to a LCD panel; a latch unit that receives a start pulse signal instructing that source lines of the LCD panel be driven and generates first and second set signals for setting an initial value of an output signal of a flip-flop to be in a predetermined default logic level, in response to the power-on reset signal; and a counter unit that generates a start pulse masking signal by masking at least one pulse of the start pulse signal in response to the first and second set signals and the start pulse signal.

摘要翻译： 在具有使用上电复位信号的自屏蔽功能的液晶显示器（LCD）面板驱动器中，并且采用其驱动方法，LCD面板驱动器包括产生电源的上电复位信号生成单元 - 响应于施加到LCD面板的电源电压而复位信号; 锁存单元，其接收指示LCD面板的源极线被驱动的起始脉冲信号，并产生用于将触发器的输出信号的初始值设定为预定的默认逻辑电平的第一和第二设定信号， 响应上电复位信号; 以及计数器单元，其通过响应于第一和第二设置信号和起始脉冲信号屏蔽起始脉冲信号的至少一个脉冲来产生起始脉冲屏蔽信号。

公开(公告)号：US08872859B2

公开(公告)日：2014-10-28

申请号：US13024039

申请日：2011-02-09

申请人： Jae-hong Ko ,  Do-youn Kim ,  Ho-hak Rho ,  Kee-moon Chun ,  Jae-suk Yu

发明人： Jae-hong Ko ,  Do-youn Kim ,  Ho-hak Rho ,  Kee-moon Chun ,  Jae-suk Yu

IPC分类号： G09G5/10 ,  G06F3/038 ,  G09G3/36

CPC分类号： G09G3/3688 ,  G09G2310/0245 ,  G09G2330/02 ,  G09G2330/023 ,  G09G2330/026 ,  G09G2330/027

摘要： Provided are a method of driving a liquid crystal panel which prevents unintended digital image data from being displayed on a liquid crystal panel when power is provided or interrupted, and a source driver and a liquid crystal display apparatus. The source driver includes output buffers; output pads; and a switching unit which is disposed between the output buffers and the output pads and controls an electrical connection state of the output pads. If a level up or a level down of a power voltage occurs, the switching unit prevents output signals of the output buffers from being transmitted to the liquid crystal panel via corresponding output pads and performs at least one of a charge sharing operation for connecting the output pads to each other and a discharging operation for providing a discharge path from the output pads to a ground terminal, in a preset period.

摘要翻译： 提供一种驱动液晶面板的方法，其防止在提供或中断电源时在液晶面板上显示非预期的数字图像数据，以及源极驱动器和液晶显示装置。 源驱动器包括输出缓冲器; 输出垫; 以及设置在所述输出缓冲器和所述输出焊盘之间并且控制所述输出焊盘的电连接状态的开关单元。 如果发生电源电平的电平或电平下降，则开关单元防止输出缓冲器的输出信号通过相应的输出焊盘传输到液晶面板，并执行用于连接输出的电荷共享操作中的至少一个 并且在预设的时间段内提供从输出焊盘向接地端子提供放电路径的放电操作。

公开(公告)号：US20060103464A1

公开(公告)日：2006-05-18

申请号：US11265701

申请日：2005-11-02

申请人： Do-youn Kim

发明人： Do-youn Kim

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  H03F1/02 ,  H03F3/3022 ,  H03F2203/30021

摘要： An integrated circuit device includes a differential amplifier, an output driver and a control circuit. The differential amplifier is responsive to a pair of differential input signals and may include a pull-down current source responsive to a pair of bias signals. The output driver has a pull-up path and pull-down path therein. These paths are joined together at an output node. The output driver has a first input terminal electrically coupled to a first output terminal of the differential amplifier. The control circuit is electrically coupled to the differential amplifier and a second input terminal of the output driver. The control circuit is configured to dispose the pull-down path in a nonconductive state when the output node is being switched low-to-high.

摘要翻译： 集成电路装置包括差分放大器，输出驱动器和控制电路。 差分放大器响应于一对差分输入信号，并且可以包括响应于一对偏置信号的下拉电流源。 输出驱动器在其中具有上拉路径和下拉路径。 这些路径在输出节点处连接在一起。 输出驱动器具有电耦合到差分放大器的第一输出端的第一输入端。 控制电路电耦合到差分放大器和输出驱动器的第二输入端子。 控制电路被配置为当输出节点从低到高切换时将下拉路径配置在非导通状态。

公开(公告)号：US20090322728A1

公开(公告)日：2009-12-31

申请号：US12387601

申请日：2009-05-05

申请人： Seung-jung Lee ,  Do-youn Kim ,  Jae-hong Ko

发明人： Seung-jung Lee ,  Do-youn Kim ,  Jae-hong Ko

IPC分类号： G09G5/00

CPC分类号： G09G3/3611 ,  G09G2310/0245 ,  G09G2310/08 ,  G09G2330/02 ,  G09G2330/026

摘要： In a liquid crystal display (LCD) panel driver with a self-masking function using a power-on reset signal, and in a method of driving the same, the LCD panel driver includes a power-on reset signal generation unit that generates a power-on reset signal in response to a supply voltage applied to a LCD panel; a latch unit that receives a start pulse signal instructing that source lines of the LCD panel be driven and generates first and second set signals for setting an initial value of an output signal of a flip-flop to be in a predetermined default logic level, in response to the power-on reset signal; and a counter unit that generates a start pulse masking signal by masking at least one pulse of the start pulse signal in response to the first and second set signals and the start pulse signal.

摘要翻译： 在具有使用上电复位信号的自屏蔽功能的液晶显示器（LCD）面板驱动器中，并且采用其驱动方法，LCD面板驱动器包括产生电源的上电复位信号生成单元 - 响应于施加到LCD面板的电源电压而复位信号; 锁存单元，其接收指示LCD面板的源极线被驱动的起始脉冲信号，并产生用于将触发器的输出信号的初始值设定为预定的默认逻辑电平的第一和第二设定信号， 响应上电复位信号; 以及计数器单元，其通过响应于第一和第二设置信号和起始脉冲信号屏蔽起始脉冲信号的至少一个脉冲来产生起始脉冲屏蔽信号。

公开(公告)号：US07295069B2

公开(公告)日：2007-11-13

申请号：US11265701

申请日：2005-11-02

申请人： Do-youn Kim

发明人： Do-youn Kim

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  H03F1/02 ,  H03F3/3022 ,  H03F2203/30021

摘要： An integrated circuit device includes a differential amplifier, an output driver and a control circuit. The differential amplifier is responsive to a pair of differential input signals and may include a pull-down current source responsive to a pair of bias signals. The output driver has a pull-up path and pull-down path therein. These paths are joined together at an output node. The output driver has a first input terminal electrically coupled to a first output terminal of the differential amplifier. The control circuit is electrically coupled to the differential amplifier and a second input terminal of the output driver. The control circuit is configured to dispose the pull-down path in a nonconductive state when the output node is being switched low-to-high.

摘要翻译： 集成电路装置包括差分放大器，输出驱动器和控制电路。 差分放大器响应于一对差分输入信号，并且可以包括响应于一对偏置信号的下拉电流源。 输出驱动器在其中具有上拉路径和下拉路径。 这些路径在输出节点处连接在一起。 输出驱动器具有电耦合到差分放大器的第一输出端的第一输入端。 控制电路电耦合到差分放大器和输出驱动器的第二输入端子。 控制电路被配置为当输出节点从低到高切换时将下拉路径配置在非导通状态。