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公开(公告)号：KR1020100130834A
公开(公告)日：2010-12-14
申请号：KR1020090049542
申请日：2009-06-04
Applicant: 삼성전자주식회사
IPC: G06F3/03 , G06F3/042 , G06F3/0354 , G06F3/14
CPC classification number: G06F3/0386 , G06F3/0321
Abstract: PURPOSE: A display device and a display method are provided to detect a pointing location of a pointing device in the display device including a display panel of a hold type. CONSTITUTION: A display panel(102) includes a plurality of areas. A communication unit(104) receives information about sensed brightness of a pointing device. A backlight unit(106) includes a plurality of light sources. A controller(108) controls the backlight unit to change brightness of the areas by a fixed unit. The controller determines a pointing location of the pointing device based on a relative change amount of the brightness information.
Abstract translation: 目的：提供一种显示装置和显示方法，用于检测包括保持型显示面板的显示装置中的指示装置的指示位置。 构成：显示面板（102）包括多个区域。 通信单元（104）接收关于指示设备的感测亮度的信息。 背光单元（106）包括多个光源。 控制器（108）控制背光单元以通过固定单元改变区域的亮度。 控制器基于亮度信息的相对变化量确定指示设备的指向位置。
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公开(公告)号：KR1020100064696A
公开(公告)日：2010-06-15
申请号：KR1020080123253
申请日：2008-12-05
Applicant: 삼성전자주식회사
CPC classification number: H03M1/664 , G09G3/20 , G09G2310/027 , G09G2310/0272 , G09G2310/0291 , H03M1/662 , H03M1/68 , H03M1/16 , H03M1/66
Abstract: PURPOSE: A digital-analog conversion circuit and a column driver having the same are provided to minimize the area of a buffer amplifier by performing DC-AC conversion based on a bias current which is varied according to a lower bit data. CONSTITUTION: A buffer amplifier(50) comprises an add / output circuit, a first input terminals(54,55), a second input terminal(53,56), and a current DAC(Digital Analog Converter)(51). The add / output circuit adds the output current of the first and second output current and outputs the added current. The current DC-AC convertor supplies a bias current to the first and the second output terminal. A first reference gamma voltage is inputted to the first input terminal. A second reference gamma voltage is inputted to the second input terminal.
Abstract translation: 目的：提供数模转换电路和具有该数字模拟转换电路的列驱动器，以通过基于根据较低位数据而变化的偏置电流进行DC-AC转换来最小化缓冲放大器的面积。 构成：缓冲放大器（50）包括加法/输出电路，第一输入端（54,55），第二输入端（53,56）和电流DAC（数字模拟转换器）51。 添加/输出电路将第一和第二输出电流的输出电流相加，并输出相加的电流。 当前的DC-AC转换器向第一和第二输出端提供偏置电流。 第一参考伽玛电压被输入到第一输入端。 第二参考伽玛电压被输入到第二输入端。
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公开(公告)号：KR100871829B1
公开(公告)日：2008-12-03
申请号：KR1020070061655
申请日：2007-06-22
Applicant: 삼성전자주식회사
Inventor： 김형래
CPC classification number: G09G3/3655 , G09G2320/0247
Abstract: A common voltage generator with a small area and high efficiency and a generating method thereof are provided to reduce power consumption, a chip size, and a module cost by reducing the number of buffers and external capacitors by directly boosting an external voltage when generating the voltage required for generating the common voltage. A third voltage swing between a first voltage and a second voltage is outputted by buffering an input voltage(S10). A fourth voltage is outputted by directly boosting the first voltage by using an external capacitor. The voltage swing between a third voltage and a fourth voltage is outputted as the common voltage by amplifying the voltage corresponding to difference between input signals(S12).
Abstract translation: 提供具有小面积和高效率的公共电压发生器及其产生方法，以通过在产生电压时直接升压外部电压来减少缓冲器和外部电容器的数量来降低功耗，芯片尺寸和模块成本 产生公共电压所需的。 通过缓冲输入电压来输出第一电压和第二电压之间的第三电压摆幅（S10）。 通过使用外部电容器直接升压第一电压来输出第四电压。 通过放大对应于输入信号之间的电压的电压，将第三电压和第四电压之间的电压摆幅作为公共电压输出（S12）。
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公开(公告)号：KR1020080097680A
公开(公告)日：2008-11-06
申请号：KR1020070042819
申请日：2007-05-02
Applicant: 삼성전자주식회사
Inventor： 김형래
IPC: H03F3/20
CPC classification number: H03F3/45179 , H03F3/3028 , H03F2203/45244 , H03F2203/45248
Abstract: A class AB amplifier and an input stage circuit therefor obtains a high gain and a high slew rate by adaptively changing the tail current of a differential amplifier. A differential amplifier(110) generates a first current and a second current which are complementarily controlled by responding to a voltage difference of a pair of the differential input signals. A first adaptive biasing circuit(120) controls a first adaptive variable current forming a tail current of the differential amplifier based on the first current. A second adaptive biasing circuit(130) controls a second adaptive variable current forming the tail current of the differential amplifier based on the second current. The first and second adaptive variable currents are complementarily varied based on the voltage difference of the differential input signal pairs.
Abstract translation: AB类放大器及其输入级电路通过自适应地改变差分放大器的尾电流来获得高增益和高转换速率。 差分放大器（110）产生通过响应一对差分输入信号的电压差来互补地控制的第一电流和第二电流。 第一自适应偏置电路（120）基于第一电流来控制形成差分放大器的尾电流的第一自适应可变电流。 第二自适应偏置电路（130）基于第二电流来控制形成差分放大器的尾电流的第二自适应可变电流。 第一和第二自适应可变电流根据差动输入信号对的电压差互补地变化。
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公开(公告)号：KR100810506B1
公开(公告)日：2008-03-07
申请号：KR1020060100949
申请日：2006-10-17
Applicant: 삼성전자주식회사
CPC classification number: G09G3/3406 , G09G2320/066
Abstract: A display apparatus is provided to enhance image quality at a dark part of the image by alleviating the ratio of contrast after enhancing the ratio of contrast in initial images. A display apparatus includes a back light(10), a lightness determining unit(32), an image change determining unit(34), and a backlight controller(36). The backlight includes plural illumination devices for radiating respective panel areas of a display panel(1). The lightness determining unit determines the lightness of images based on the panel areas. The image change determining unit determines whether images displayed in the display panel are changed. The backlight controller determines the lightness of the images at respective areas based on the determination result when the images are changed, illuminates the respective panel areas corresponding to target illumination levels according to the lightness of the images, and controls the backlight to illuminate the respective panel areas according to elapsed time.
Abstract translation: 提供一种显示装置，通过在增强初始图像中的对比度之比之后减轻对比度的比例来提高图像暗部的图像质量。 显示装置包括背光（10），亮度确定单元（32），图像改变确定单元（34）和背光控制器（36）。 背光源包括用于照射显示面板（1）的相应面板区域的多个照明装置。 亮度确定单元基于面板区域确定图像的亮度。 图像改变确定单元确定显示面板中显示的图像是否改变。 背光控制器根据图像变化时的判定结果，决定各区域的图像的亮度，根据图像的亮度照亮与目标照明度对应的各面板区域，并控制背光照亮各面板 区域按照时间过去
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Patent Agency Ranking
公开(公告)号：KR100808247B1
公开(公告)日：2008-03-03
申请号：KR1020060077763
申请日：2006-08-17
Applicant: 삼성전자주식회사
IPC: G02F1/133
CPC classification number: G09G3/342 , G09G2320/0233 , G09G2320/0238 , G09G2320/0673 , G09G2360/16
Abstract: 액정표시장치 및 그 밝기조정방법이 개시된다. 이 발명의 액정표시장치는 소정 개수의 부분영역들로 분할되어 부분영역별로 밝기조정되는 발광부를 포함하는 백라이트부; LCD 패널과 LCD 구동부를 포함하는 액정표시부; 및 입력되는 영상신호에 대응하여 상기 각 부분영역의 밝기조정을 위한 대표값을 계산하여 백라이트부로 출력하고, 인접 부분영역들과의 밝기 차이로 인한 부분영역의 밝기의 증감을 보상하도록 입력되는 영상신호를 감마보정하여 상기 액정표시부로 출력하는 제어부를 포함한다. 본 발명에 따르면, 백라이트의 각 부분영역별로 밝기조정이 이루어짐으로써 발생하는 인접 부분영역과의 상호작용으로 인한 부분영역의 밝기 증감을 보상하도록 각 부분영역의 밝기조정을 위해 적용될 대표값을 조절하거나 입력 영상을 감마보정하여 명암비를 효과적으로 개선시킬 수 있는 액정표시장치 및 그 밝기조정방법이 제공된다.
밝기조정, 감마보정, 콘트라스트 개선기법, 히스토그램 이퀄라이제이션, 스트레치, 바이 히스토그램 이퀄라이제이션-
公开(公告)号：KR1020080016108A
公开(公告)日：2008-02-21
申请号：KR1020060077763
申请日：2006-08-17
Applicant: 삼성전자주식회사
IPC: G02F1/133
CPC classification number: G09G3/342 , G09G2320/0233 , G09G2320/0238 , G09G2320/0673 , G09G2360/16 , G09G3/3406
Abstract: An LCD and a method for adjusting the brightness thereof are provided to adjust representative values to be applied for adjusting brightness of portion areas of a backlight unit and gamma-correct an inputted image, thereby efficiently improving the contrast ratio. A backlight part(300) includes a light emitting unit divided into a predetermined number of portion areas, wherein the brightness of each of the portion areas is individually adjusted. A display part(400) includes an LCD panel and a driving unit. A control part(200) calculates representative values for adjusting the brightness of the portion areas in response to an inputted image signal to output the calculated representative values to the backlight part. The control part gamma-corrects the inputted image signal to compensate for the increase and decrease in brightness of each of the portion areas due to difference in brightness between adjacent portion areas, and outputs the gamma-corrected image signal to the display part.
Abstract translation: 提供了一种用于调节其亮度的LCD和调节其亮度的方法，以调整用于调节背光单元的部分区域的亮度并对伽马校正输入图像的代表性值，从而有效地提高对比度。 背光部件（300）包括被分成预定数量的部分区域的发光单元，其中每个部分区域的亮度被单独调节。 显示部分（400）包括LCD面板和驱动单元。 控制部件（200）响应于输入的图像信号计算用于调整部分区域的亮度的代表值，以将计算的代表值输出到背光部件。 控制部分伽马校正输入的图像信号，以补偿相邻部分区域之间的亮度差导致的每个部分区域的亮度的增加和减少，并将伽马校正的图像信号输出到显示部分。
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公开(公告)号：KR100758295B1
公开(公告)日：2007-09-12
申请号：KR1020050006839
申请日：2005-01-25
Applicant: 삼성전자주식회사
IPC: G09G3/296
CPC classification number: G09G3/3696 , G09G3/3406 , G09G3/3648 , G09G2320/0276 , G09G2320/0626 , G09G2360/144
Abstract: 여기에 개시된 감마 보정 장치 및 방법은, 감마 전압이 일정하게 고정된 상태에서 계조 전압의 출력 레인지를 조정하여 복수 개의 감마 값에 대응되는 계조 전압을 발생한다. 따라서, 각각의 감마 값마다 룩업 테이블을 구비하지 않고도 계조 전압의 출력 레인지 조정을 통해 다양한 감마 값에 대응되는 감마 보정을 수행할 수 있게 된다.
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公开(公告)号：KR1020060086030A
公开(公告)日：2006-07-31
申请号：KR1020050006839
申请日：2005-01-25
Applicant: 삼성전자주식회사
IPC: G09G3/296
CPC classification number: G09G3/3696 , G09G3/3406 , G09G3/3648 , G09G2320/0276 , G09G2320/0626 , G09G2360/144
Abstract: 여기에 개시된 감마 보정 장치 및 방법은, 감마 전압이 일정하게 고정된 상태에서 계조 전압의 출력 레인지를 조정하여 복수 개의 감마 값에 대응되는 계조 전압을 발생한다. 따라서, 각각의 감마 값마다 룩업 테이블을 구비하지 않고도 계조 전압의 출력 레인지 조정을 통해 다양한 감마 값에 대응되는 감마 보정을 수행할 수 있게 된다.
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公开(公告)号：KR100438786B1
公开(公告)日：2004-07-05
申请号：KR1020020022323
申请日：2002-04-23
Applicant: 삼성전자주식회사
IPC: G09G3/36
CPC classification number: G09G3/3696 , G09G2330/02
Abstract: A highly efficient LCD driving voltage generating circuit and method consumes a relatively small amount of power, as compared to conventional means. The LCD driving voltage generating circuit comprises a DC-DC converter for boosting an input voltage in response to a clock signal and for outputting the boosted voltage as a first driving voltage; a voltage controlled oscillator for generating the clock signal at a frequency that changes in response to the level of a control voltage; and a control voltage generator for generating the control voltage in response to the difference between a reference voltage and a feedback voltage derived from the first driving voltage. In this manner, as the feedback voltage becomes lower than a reference voltage, the frequency of the clock signal input into a DC-DC converter increases. If the feedback voltage is lower than a predetermined voltage, this indicates that the level of the first driving voltage is lower than a predetermined value, and thus current consumption of the LCD panel is large. It is possible to decrease power consumption and increase boosting efficiency by changing the frequency of the clock signal used for boosting of a DC-DC converter according to the current consumption of the LCD panel.
Abstract translation: 与传统方式相比，高效LCD驱动电压产生电路和方法消耗相对较少的功率。 LCD驱动电压产生电路包括：DC-DC转换器，用于响应于时钟信号升压输入电压并且输出升高的电压作为第一驱动电压; 压控振荡器，用于以响应于控制电压的电平而改变的频率产生时钟信号; 以及控制电压生成器，用于响应于参考电压与从第一驱动电压导出的反馈电压之间的差值而生成控制电压。 以这种方式，当反馈电压变得低于参考电压时，输入到DC-DC转换器的时钟信号的频率增加。 如果反馈电压低于预定电压，则表明第一驱动电压的电平低于预定值，因此LCD面板的电流消耗较大。 通过根据LCD面板的电流消耗来改变用于升压DC-DC转换器的时钟信号的频率，可以降低功耗并提高升压效率。
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