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    • 1. 发明授权
    • Method and apparatus for driving display data
    • 用于驱动显示数据的方法和装置
    • US08310495B2
    • 2012-11-13
    • US11857500
    • 2007-09-19
    • Jong-kon BaeKyu-young Chung
    • Jong-kon BaeKyu-young Chung
    • G06F12/00
    • G09G5/001G09G5/395G09G2310/0275G09G2310/0297
    • In one aspect, an apparatus for driving display data includes an address mapping unit which generates second address units by dividing gradation data displayed on a plurality of pixels in a display panel into a plurality of first address units that are in the form of an a×b matrix, and mapping addresses of the gradation data in each of the first address units into the form of a b×a matrix, wherein the plurality of the first and second address units are arranged in the form of an M×N matrix, wherein a, b, M and N are natural numbers, and a is greater than b. The apparatus further includes a memory unit which stores the second address units having the mapped addresses in the form of a b×a matrix as units in the form of an M×N matrix, a data output unit which receives the data in a×N columns output from the memory unit and outputs the data as data in b×N columns, and a source driver block which receives the data in the b×N columns and transmitting the data to the display panel.
    • 一方面,一种用于驱动显示数据的装置包括:地址映射单元,其通过将显示面板中的多个像素上显示的灰度数据分割为多个第一地址单元,生成第二地址单元,其形式为a× b矩阵和将每个第一地址单元中的灰度数据的地址映射为ab×a矩阵的形式,其中多个第一和第二地址单元以M×N矩阵的形式排列,其中a ,b,M和N是自然数,a大于b。 该装置还包括存储单元,其存储具有以矩阵形式的映射地址的第二地址单元作为M×N矩阵形式的单位,数据输出单元以×N列接收数据 从存储器单元输出并输出数据作为b×N列中的数据,以及源驱动器块,其接收b×N列中的数据并将数据发送到显示面板。
    • 2. 发明授权
    • Source driver in liquid crystal display device, output buffer included in the source driver, and method of operating the output buffer
    • 液晶显示装置中的源驱动器,源驱动器中包含的输出缓冲器以及操作输出缓冲器的方法
    • US08184083B2
    • 2012-05-22
    • US12153303
    • 2008-05-16
    • Kyu-young Chung
    • Kyu-young Chung
    • G09G3/36G09G5/00G06F3/038H03F3/45
    • G09G3/3688G09G3/3614G09G2310/0248G09G2310/027G09G2320/0276G09G2330/023H03K19/01707H03K19/018571
    • Provided is an output buffer, which may be included in a source driver of a liquid crystal display (LCD) device. The output buffer may include a differential amplification unit and an output unit. The differential amplification unit may generate control currents by amplifying the difference between the voltages of an analog image signal and a signal output from the output buffer. The output unit outputs the amplified analog image signal in response to the control currents. The amount of bias current used to drive the differential amplification unit increases during a charge recycling period, and the amount of quiescent current flowing through the output unit decreases during the charge recycling period. The amount of the bias current used to drive the differential amplification unit decreases during a driving period, and the amount of the quiescent current flowing through the output unit increases during the driving period.
    • 提供了可以包括在液晶显示器(LCD)装置的源极驱动器中的输出缓冲器。 输出缓冲器可以包括差分放大单元和输出单元。 差分放大单元可以通过放大模拟图像信号的电压和从输出缓冲器输出的信号之间的差来产生控制电流。 输出单元响应于控制电流输出放大的模拟图像信号。 用于驱动差动放大单元的偏置电流量在电荷循环期间增加,并且在充电回收期间流过输出单元的静态电流量减少。 用于驱动差分放大单元的偏置电流的量在驱动期间减小,并且在驱动期间流过输出单元的静态电流的量增加。
    • 3. 发明申请
    • OPERATIONAL AMPLIFIER WITH OVERDRIVING CIRCUIT AND METHOD FOR SAME
    • 具有扩展电路的操作放大器及其方法
    • US20120049957A1
    • 2012-03-01
    • US13034040
    • 2011-02-24
    • Kyu-Young CHUNG
    • Kyu-Young CHUNG
    • H03F3/45
    • H03F3/3022H03F3/4521
    • Disclosed is an operational amplifier including an overdriving circuit capable of reaching a target voltage within an operation time by outputting a higher voltage than the target voltage when an RC delay time is greater. The operational amplifier may including an overdriving circuit, in which first and second input terminals and an output terminal may be provided, an input voltage may be applied to the first input terminal, a second input terminal may be connected to the output terminal, and the input voltage applied to the first input terminal may be overdriven to have a certain level to be outputted to the output terminal, may include: first and second overdriving units performing an overdriving operation at a rising edge and a falling edge, respectively.
    • 公开了一种运算放大器,其包括能够在RC延迟时间较大时通过输出比目标电压更高的电压在运行时间内达到目标电压的过驱动电路。 运算放大器可以包括过驱动电路,其中可以提供第一和第二输入端子和输出端子,可以将输入电压施加到第一输入端子,第二输入端子可以连接到输出端子,并且 施加到第一输入端子的输入电压可以被过载驱动以具有要输出到输出端子的一定电平,可以包括:第一和第二过驱动单元分别在上升沿和下降沿执行过驱动操作。
    • 6. 发明授权
    • Voltage boost circuit and voltage boosting method using voltage boost clock signal with varying frequency
    • 升压电路和升压电压升压方法采用升压时钟信号变频
    • US07671572B2
    • 2010-03-02
    • US11697383
    • 2007-04-06
    • Kyu-young Chung
    • Kyu-young Chung
    • G05F1/00
    • H02M3/156
    • A voltage boost circuit and a method of boosting voltage using a voltage boost clock signal with varying frequency, in which the voltage boost circuit includes a boost voltage generator that responds to a voltage boost clock signal in order to boost an input voltage and outputs the boosted input voltage as an output boost voltage; and a boost voltage frequency control unit that responds to the result obtained by comparing a level of the output boost voltage and a level of a target boost voltage so as to change the boost voltage frequency of the voltage boost clock signal and outputs the voltage boost clock signal having the changed boost voltage frequency. The voltage boost circuit and the voltage boosting method can prevent a waste of the operating current during the boosting of the voltage.
    • 一种升压电路和使用具有变化频率的升压时钟信号来升压电压的方法,其中升压电路包括升压电压发生器,其响应升压时钟信号以升高输入电压并输出升压 输入电压作为输出升压电压; 以及升压电压频率控制单元,其响应于通过比较输出升压电压的电平和目标升压电压的电平而获得的结果,以便改变升压时钟信号的升压电压频率,并输出升压时钟 具有改变的升压电压频率的信号。 升压电路和升压方法可以防止在升压电压期间浪费工作电流。
    • 7. 发明申请
    • SOURCE DRIVING CIRCUIT AND LIQUID CRYSTAL DISPLAY APPARATUS INCLUDING THE SAME
    • 源驱动电路和液晶显示装置,包括它们
    • US20080062027A1
    • 2008-03-13
    • US11743363
    • 2007-05-02
    • Kyu-Young Chung
    • Kyu-Young Chung
    • H03M1/12
    • G09G3/3655G09G3/3614G09G3/3688G09G2310/0248G09G2330/021
    • A source driving circuit includes a source driver circuit, an intermediate voltage generator, and a switching control unit. The source driver circuit receives display data and generates a source driving voltage corresponding to the received display data. The intermediate voltage generator generates an intermediate source driving voltage. The switching control unit receives a plurality of control signals for selectively applying the source driving voltage and the intermediate source driving voltage to data lines of a display as a driving voltage and controls an order of transition to final levels of a common electrode voltage and the driving voltage. The common electrode voltage may be applied to a common electrode of a liquid crystal capacitor coupled to the data line of the display.
    • 源极驱动电路包括源极驱动电路,中间电压发生器和开关控制单元。 源极驱动电路接收显示数据并产生与所接收的显示数据相对应的源极驱动电压。 中间电压发生器产生中间源驱动电压。 开关控制单元接收多个控制信号,用于选择性地将源驱动电压和中间源驱动电压施加到显示器的数据线作为驱动电压,并且控制向公共电极电压的最终电平和驱动的转换的顺序 电压。 公共电极电压可以施加到耦合到显示器的数据线的液晶电容器的公共电极。
    • 8. 发明申请
    • Adaptive input voltage controlled voltage booster
    • 自适应输入电压控制升压器
    • US20060202743A1
    • 2006-09-14
    • US11354462
    • 2006-02-15
    • Kyu-young Chung
    • Kyu-young Chung
    • G05F1/10
    • G11C5/145
    • Provided is a voltage booster adaptively controlled by an input voltage. The voltage booster includes an Operational Transconductance Amplifier (OTA) having positive and negative input terminals and generating an output current in response to a voltage difference between the positive and negative input terminals. The positive input terminal of the OTA receives a voltage obtained by dividing a target output voltage of the voltage booster by n, and the negative input terminal of the OTA receives a voltage obtained by dividing an output voltage of the voltage booster by n. The output current of the OTA charges an input capacitor to generate a first input voltage. A buffer receives the first input voltage and outputs a second input voltage. The second input voltage is input to a voltage boosting unit to generate the output voltage having a voltage equal to n times the second input voltage, where n≧1.
    • 提供了由输入电压自适应地控制的电压增益。 升压器包括具有正输入端和负输入端的工作跨导放大器(OTA),并且响应于正输入端和负输入端之间的电压差产生输出电流。 OTA的正输入端子接收通过将升压器的目标输出电压除以n而获得的电压,并且OTA的负输入端子接收通过将升压器的输出电压除以n而获得的电压。 OTA的输出电流对输入电容器充电以产生第一输入电压。 缓冲器接收第一输入电压并输出第二输入电压。 第二输入电压被输入到升压单元,以产生具有等于第二输入电压的n倍的电压的输出电压,其中n> = 1。