公开(公告)号：US07196701B2

公开(公告)日：2007-03-27

申请号：US09823927

申请日：2001-03-29

申请人： Yusuke Tsutsui ,  Makoto Kitagawa ,  Mitsugu Kobayashi ,  Hisao Uehara

发明人： Yusuke Tsutsui ,  Makoto Kitagawa ,  Mitsugu Kobayashi ,  Hisao Uehara

IPC分类号： G09G5/00

CPC分类号： G09G3/3611 ,  G09G3/3696 ,  G09G2330/021

摘要： A power supply circuit (300) for a display device such as a liquid crystal outputs a boosted supply voltage VDD2 during normal operation, and generates a non-boosted supply voltage VDD2 having a voltage lower than that during the normal display operation by controlling the switches for switching the output within the power supply circuit (300) during a power save mode. The non-boosted supply voltage is supplied to the analog circuits of a driving circuit (100) so that the power consumption at the analog circuits is reduced. By controlling the switch for switching the output within the power supply circuit and the supply of the power supply clock, the circuit can be switched, in the power save mode, to either a mode where a lower supply voltage is generated or to a mode where the power supply is turned off.

摘要翻译： 用于诸如液晶的显示装置的电源电路（300）在正常操作期间输出升压的电源电压VDD 2，并且通过控制产生具有低于正常显示操作期间电压的非升压电源电压VDD 2 用于在节电模式期间切换电源电路（300）内的输出的开关。 非升压电源电压被提供给驱动电路（100）的模拟电路，使得模拟电路的功耗降低。 通过控制用于切换电源电路内的输出的开关和电源时钟的供给，可以在省电模式下将电路切换到产生较低电源电压的模式或者其中 电源关闭。

公开(公告)号：US07095389B2

公开(公告)日：2006-08-22

申请号：US09953236

申请日：2001-09-17

申请人： Hisao Uehara ,  Kiyoshi Yoneda ,  Yasushi Miyajima ,  Ryoichi Yokoyama

发明人： Hisao Uehara ,  Kiyoshi Yoneda ,  Yasushi Miyajima ,  Ryoichi Yokoyama

IPC分类号： G09G3/18

CPC分类号： G09G3/3648 ,  G09G2300/0842 ,  G09G2330/021

摘要： The display device of this invention, in which the retaining circuit for retaining the image signal is provided for each of the pixel elements, is capable of operating under two operation modes, a normal operation mode and a memory mode. Since the placement of the retaining circuit 110, which requires relatively large area, is confined to the area for the pixel element electrode 17 not in between the neighboring pixel element electrodes 17, the required area for one pixel element is minimized, resulting in the size reduction of the liquid crystal display device. By placing at least a portion of the retaining circuit in the area of the pixel element electrode 17 of the neighboring pixel element, the detour of the wiring can be omitted, resulting in the efficient use of the space. By this, the area required for the retaining circuit is minimized, directly resulting in the reduction of the size of the liquid crystal display device.

公开(公告)号：US6127991A

公开(公告)日：2000-10-03

申请号：US969142

申请日：1997-11-12

申请人： Hisao Uehara ,  Mitsugu Kobayashi ,  Makoto Kitagawa ,  Yusuke Tsutsui

发明人： Hisao Uehara ,  Mitsugu Kobayashi ,  Makoto Kitagawa ,  Yusuke Tsutsui

IPC分类号： G09G3/20 ,  G09G3/28

CPC分类号： G09G3/2029 ,  G09G3/2022 ,  G09G3/288 ,  G09G2320/066 ,  G09G2320/0673

摘要： There is proposed is a method of controlling a flat panel display apparatus for multi-gradation display in which a data determination portion and a subfield control portion are provided. Based on a most significant bit or an upper bit of original image data, it is determined in which one of two or more divided gradation groups the original image data is included, to select a combination of subfields in accordance with a gradation-brightness characteristic of the belonging gradation group. Using a complementary relationship with human visibility, a difference in brightness between the gradations in a low-order brightness region is reduced, and a difference in brightness between the gradations in a high-order brightness region is enlarged. Therefore, a density of brightness is uniformly recognized visually over all the brightness regions, and a good quality of display can be obtained.

摘要翻译： 提出了一种控制用于多级显示的平板显示装置的方法，其中提供了数据确定部分和子场控制部分。 基于原始图像数据的最高有效位或较高位，确定包含原始图像数据的两个或更多个分割灰度组中的哪一个，根据灰度级亮度特性来选择子场的组合 归属等级组。 使用与人类可见度的互补关系，降低了低阶亮度区域中的灰度之间的亮度差异，并且放大了高阶亮度区域中的灰度之间的亮度差。 因此，在所有的亮度区域，视觉上均匀地识别亮度的浓度，并且可以获得良好的显示质量。

公开(公告)号：US5784040A

公开(公告)日：1998-07-21

申请号：US597119

申请日：1996-02-06

申请人： Mitsugu Kobayashi ,  Makoto Fujioka ,  Atsuyoshi Tanioka ,  Kazuhiko Moriwaki ,  Makoto Shimizu ,  Hisao Uehara

发明人： Mitsugu Kobayashi ,  Makoto Fujioka ,  Atsuyoshi Tanioka ,  Kazuhiko Moriwaki ,  Makoto Shimizu ,  Hisao Uehara

IPC分类号： G09G3/20 ,  G09G3/36 ,  G09G5/10

CPC分类号： G09G3/2062 ,  G09G3/2059 ,  G09G3/3611 ,  G09G3/2018

摘要： An image information processor for a liquid crystal display by a digital driver is intended to provide image display near to a source image by making continuous-tone image display by pseudo representations. The image information processor generates L-bit image display data based on P-bit source image data, L being less than P. Added to source image data of a picture element of the Nth frame (where N is a natural number of 2 or greater) is error data corresponding to the picture element of the (N-1)th frame at the same position as the picture element of the Nth frame. The high-order L bits of the P-bit data resulting from the addition are used as image display data of the picture element of the Nth frame and at least one bit of the remaining low-order bit data is held as error data of the picture element of the Nth frame. Thus, error data of a picture element of one frame is added to the same picture element of the next frame, thereby lessening the brightness difference between both the picture elements and smoothing a time change in brightness.

摘要翻译： 用于数字驱动器的液晶显示器的图像信息处理器旨在通过伪表示进行连续色调图像显示来提供靠近源图像的图像显示。 图像信息处理器基于P比特源图像数据生成L比特图像显示数据，L小于P.添加到第N帧的图像元素（其中N是2或更大的自然数）的源图像数据 ）是与第N帧的图像元素相同位置处的第（N-1）帧的像素对应的误差数据。 由相加产生的P位数据的高阶L位用作第N帧的像素的图像显示数据，剩下的低位比特数据的至少一位被保持为 第N帧的图像元素。 因此，将一帧的像素的误差数据添加到下一帧的相同像素，从而减小两个像素之间的亮度差并平滑亮度的时间变化。

公开(公告)号：US5574477A

公开(公告)日：1996-11-12

申请号：US553828

申请日：1995-11-06

申请人： Makoto Shimizu ,  Masahiro Okuyama ,  Kazuhiko Moriwaki ,  Atsuyoshi Tanioka ,  Hisao Uehara ,  Norio Miura

发明人： Makoto Shimizu ,  Masahiro Okuyama ,  Kazuhiko Moriwaki ,  Atsuyoshi Tanioka ,  Hisao Uehara ,  Norio Miura

IPC分类号： G02F1/13 ,  G02F1/133 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/13357 ,  G06F1/16 ,  G06F1/20 ,  G09G3/36

CPC分类号： G06F1/1601 ,  G06F1/20 ,  G06F1/203 ,  G06F2200/1612

摘要： A single liquid-crystal display can be used to be either of direct-vision or projection type, if required. Separate display devices for monitor and OHP are not required. Further, power consumption can be reduced, with the service life of the display being prolonged to improve economy.The liquid-crystal display includes a display housing which receives a liquid-crystal panel, a driver circuit unit and a cooling fan, the display housing being detachably mountable in a back light stand. When the display housing is mounted or dismounted in the back light stand, the fan and back light can automatically be turned on or off to reduce the power consumption. The liquid-crystal panel can be prevented from being degraded by cooling it by way of the fan.

摘要翻译： 如果需要，单个液晶显示器可以用于直视或投影型。 不需要用于显示器和OHP的独立显示设备。 此外，可以降低功耗，延长显示器的使用寿命以改善经济性。 液晶显示器包括接收液晶面板的显示器壳体，驱动电路单元和冷却风扇，显示壳体可拆卸地安装在后灯架中。 当显示外壳安装或拆卸在后灯架上时，风扇和背光灯可以自动打开或关闭，以降低功耗。 通过风扇进行冷却，能够防止液晶面板的劣化。

公开(公告)号：US5537233A

公开(公告)日：1996-07-16

申请号：US340234

申请日：1994-11-16

申请人： Norio Miura ,  Hisao Uehara ,  Atsuyoshi Tanioka ,  Kazuhiko Moriwaki ,  Makoto Shimizu ,  Masahiro Okuyama

发明人： Norio Miura ,  Hisao Uehara ,  Atsuyoshi Tanioka ,  Kazuhiko Moriwaki ,  Makoto Shimizu ,  Masahiro Okuyama

IPC分类号： G02F1/1347 ,  G02F1/13 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/13357

CPC分类号： G02F1/13476 ,  G02F1/1336 ,  G02F1/133615 ,  G02F2001/133627

摘要： In a display housing, first and Second liquid-crystal panels are disposed in parallel with each other, and a fluorescent lamp is positioned beside both ends of a gap between these panels. Thus, when used for a transmission type display, e.g. an OHP, the first liquid-crystal panel for light shutter is set in a transmission condition to transmit light from a light source for the OHP or the like and to irradiate the second liquid-crystal panel for displaying an image, thereby projecting the image in a magnified size onto a screen or the like. When used for a direct-vision type display, e.g. a monitor for a personal computer or the like, the first liquid-crystal panel is set in a shading condition to effect diffuse reflection of light from the fluorescent lamp by the first liquid-crystal panel and to irradiate the second liquid-crystal panel, thereby providing a direct-vision image.

摘要翻译： 在显示器壳体中，第一和第二液晶面板彼此平行地设置，荧光灯位于这些面板之间的间隙的两端附近。 因此，当用于传输类型显示时，例如， OHP，用于光快门的第一液晶面板被设置在透射条件下以从OHP等的光源透射光并照射第二液晶面板以显示图像，从而将图像投影到 在屏幕上放大尺寸等。 当用于直视式显示时，例如， 用于个人计算机等的监视器，将第一液晶面板设置在阴影状态，以通过第一液晶面板进行来自荧光灯的光的漫反射，并且照射第二液晶面板，从而 提供直观的图像。

公开(公告)号：US06369866B1

公开(公告)日：2002-04-09

申请号：US09251978

申请日：1999-02-18

申请人： Yasuki Rai ,  Hisao Uehara ,  Yasushi Marushita ,  Makoto Shimizu

发明人： Yasuki Rai ,  Hisao Uehara ,  Yasushi Marushita ,  Makoto Shimizu

IPC分类号： G02F11335

CPC分类号： G02B6/003 ,  F21S11/00 ,  G02F1/133615 ,  G02F2001/133618 ,  G02F2001/133626

摘要： An improved liquid crystal display device of the type having a liquid crystal display panel, a light guide plate below a surface of the display panel and located between a reflecting portion and a diffusing portion, and a light collecting lens located at one end of the light guide plate for collecting and transmitting light to the light guide plate for providing backlight to the display panel. The display device includes a light transmitter located between the light collecting lens and the light guide plate. The light transmitter optically connects the light collecting lens and the light guide plate and separates the light collecting lens from the display panel by a predetermined difference. The light transmitter allows light to be more evenly distributed or reflected onto the display panel so that images displayed on the panel have a more uniform brightness.

摘要翻译： 一种改进的液晶显示装置，具有液晶显示面板，位于显示面板的表面下方并位于反射部分和漫射部分之间的导光板，以及位于光的一端的聚光透镜 引导板，用于收集和传输光到导光板，用于向显示面板提供背光。 显示装置包括位于聚光透镜和导光板之间的光发射器。 光发射器将聚光透镜和导光板光学连接，并将聚光透镜与显示面板隔开预定的差异。 光发射机允许光更均匀地分布或反射到显示面板上，使得显示在面板上的图像具有更均匀的亮度。

公开(公告)号：US06278496B1

公开(公告)日：2001-08-21

申请号：US09168773

申请日：1998-10-08

申请人： Makoto Kitagawa ,  Mitsugu Kobayashi ,  Makoto Fujioka ,  Yusuke Tsutsui ,  Hisao Uehara

发明人： Makoto Kitagawa ,  Mitsugu Kobayashi ,  Makoto Fujioka ,  Yusuke Tsutsui ,  Hisao Uehara

IPC分类号： H04N5202

CPC分类号： H04N5/202 ,  G09G3/2059 ,  G09G3/3648 ,  G09G2320/0276 ,  G09G2320/0606 ,  G09G2320/0626 ,  G09G2320/066 ,  H04N9/69

摘要： In the &ggr; correction circuit, a crossover point arithmetic processing unit performs arithmetic processing for each region on crossover points y in the output data direction of a &ggr; correction crossover line based on a plurality of slope data A respectively specified for each of a plurality of regions and crossover point positions X in the input data direction set in advance. A 5-to-4 encoder and a selector select one of a plurality of slope data A respectively specified for each of a plurality of regions and one result B of the results y of arithmetic processing on said crossover points based on the upper bits of input data, a flag encoder and another selector calculate the difference &Dgr;X from a crossover point position in the input data direction to the input data in the region to which input data belongs, and an arithmetic processing unit multiples the above difference &Dgr;X by the selected slope A, adds the multiplication result to the value of the selected crossover point position B in the output data direction, and outputs that value as a &ggr; correction value. Consequently, even if the number of crossover lines for digital &ggr; correction increases, arithmetic processing is simplified. When an image data processing apparatus is used, a pseudo gray scale processing circuit may be provided in a later stage of this &ggr; correction circuit to decrease the number of data bits.

摘要翻译： 在伽马校正电路中，交叉点算术处理单元基于分别为多个区域中的每一个指定的多个斜率数据A，对伽马校正交叉线的输出数据方向上的交叉点y上的各区域进行运算处理 并在预先设定的输入数据方向上的交叉点位置X。 5对4编码器和选择器选择分别为多个区域中的每一个指定的多个斜率数据A中的一个，以及基于输入的较高位的所述交叉点上的算术处理结果y的一个结果B 数据，标志编码器​​和另一个选择器从输入数据方向上的交叉点位置到输入数据所属的区域中的输入数据计算差DELTAX，并且运算处理单元将上述差DELTAX乘以所选择的斜率A ，将乘法结果与输出数据方向上所选交叉点位置B的值相加，并输出该值作为伽马校正值。 因此，即使用于数字伽马校正的交叉线的数量增加，也能够简化算术处理。 当使用图像数据处理装置时，可以在该伽马校正电路的后期提供伪灰度级处理电路以减少数据比特数。

公开(公告)号：US06254245B1

公开(公告)日：2001-07-03

申请号：US09263760

申请日：1999-03-05

申请人： Hisao Uehara

发明人： Hisao Uehara

IPC分类号： F21V709

CPC分类号： G02B6/0018 ,  F21V7/005 ,  F21V7/09 ,  G02B6/002 ,  G02F1/133615 ,  G02F2001/133618 ,  G02F2001/133626

摘要： A backlight for a liquid crystal display includes a light guide plate located adjacent to a liquid crystal display panel. A light collector is located at one end of the light guide plate and has an exposed surface for receiving ambient light. The light collector has a reflector secured inside it. The received ambient light is reflected by the reflector along the light guide plate. The reflector may include three arcuate shaped reflecting elements. The light guide plate has a reflective surface which reflects the light toward the liquid crystal display panel.

摘要翻译： 用于液晶显示器的背光源包括邻近液晶显示面板的导光板。 光收集器位于导光板的一端，并且具有用于接收环境光的暴露表面。 光收集器具有固定在其内的反射器。 所接收的环境光被反射器沿着导光板反射。 反射器可以包括三个弧形反射元件。 导光板具有将光朝向液晶显示面板反射的反射面。

公开(公告)号：US6118905A

公开(公告)日：2000-09-12

申请号：US591837

申请日：1996-01-19

申请人： Hisao Uehara ,  Mitsugu Kobayashi ,  Makoto Fujioka ,  Kenji Saiki ,  Makoto Kitagawa ,  Yusuke Tsutsui

发明人： Hisao Uehara ,  Mitsugu Kobayashi ,  Makoto Fujioka ,  Kenji Saiki ,  Makoto Kitagawa ,  Yusuke Tsutsui

IPC分类号： H04N1/40 ,  G06T5/00 ,  G09G3/20 ,  G09G3/36 ,  G09G5/00 ,  G09G5/36 ,  H04N1/405 ,  H04N1/56 ,  H04N1/60 ,  G06K9/36 ,  G06K9/38 ,  G06K9/46

CPC分类号： G09G3/2059 ,  H04N1/56 ,  G09G2320/0613

摘要： An image processing apparatus detects, in step 1, whether or not differences between currently supplied image data and image data of a previous pixel are more than a predetermined value m, and identifies a border of a computer-created image or a natural image, where a brightness level differs from the remaining area of the image, when the differences are more than the predetermined value m. Conversely, when the differences are less than the predetermined value m, the image processing apparatus checks, in step 2, whether image data at a pixel before and a pixel two before the current pixel are identical with respect to the color components constituting the color image. When the differences are not all zero, it is checked whether or not the image data at a pixel before the current pixel and the image data at the current pixel are all zero. When the image data are not identical, the color image is identified as being a natural image. When the image data are identical, the color image is identified as being a computer-created image. In step 3, the computer-created image is checked as to whether it is a 2-pixel checkered image.

摘要翻译： 图像处理装置在步骤1中检测当前提供的图像数据和先前像素的图像数据之间的差异是否大于预定值m，并且识别计算机创建的图像或自然图像的边界，其中 当差值大于预定值m时，亮度级别与图像的剩余区域不同。 相反，当差小于预定值m时，图像处理装置在步骤2中检查在当前像素之前的像素之前的像素数据和相对于构成彩色图像的色彩分量相同的像素之间的图像数据 。 当差异不全部为零时，检查当前像素之前的像素处的图像数据和当前像素处的图像数据是否全部为零。 当图像数据不相同时，彩色图像被识别为自然图像。 当图像数据相同时，彩色图像被识别为计算机创建的图像。 在步骤3中，检查计算机创建的图像是否是2像素方格图像。