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    Mobile information terminal
    3.
    发明授权
    Mobile information terminal 失效

    公开(公告)号：US06626552B2

    公开(公告)日：2003-09-30

    申请号：US10119361

    申请日：2002-04-09

    申请人： Hisao Uehara ,  Yasushi Marushita ,  Makoto Shimizu

    发明人： Hisao Uehara ,  Yasushi Marushita ,  Makoto Shimizu

    IPC分类号： F21V3300

    CPC分类号： G06F1/1679 ,  G02F1/133615 ,  G02F2001/133618 ,  G02F2001/133626 ,  G06F1/1616 ,  G06F1/1637

    摘要： External light is introduced by a light-introducing portion to be used as a light source for a backlight, so that the power consumption of the backlight of a liquid crystal display device can be suppressed. At the same time, the brightness of the screen of the liquid crystal display device can be increased to enhance the visibility in outdoors. Therefore, the portability of a mobile information terminal can be improved. Furthermore, the light-introducing portion covers an end portion of the main unit opposed to an axis, whereby the main unit is protected so that the life period of the mobile information terminal can be prolonged. The variety of the design of the mobile information terminal can be increased by using the transparency of the light-introducing portion.

    Image information process apparatus for causing a display to display continuous tones in a pseudo manner
    4.
    发明授权
    Image information process apparatus for causing a display to display continuous tones in a pseudo manner 失效
    用于使显示器以伪方式显示连续色调的图像信息处理装置

    公开(公告)号：US5990855A

    公开(公告)日：1999-11-23

    申请号：US813465

    申请日：1997-03-10

    申请人： Mitsugu Kobayashi ,  Hisao Uehara ,  Makoto Kitagawa

    发明人： Mitsugu Kobayashi ,  Hisao Uehara ,  Makoto Kitagawa

    IPC分类号： G09G3/20 ,  G09G3/36 ,  H04N5/66 ,  H04N9/30

    CPC分类号： G09G3/2059 ,  G09G2360/16 ,  G09G3/3611 ,  H04N5/66 ,  H04N9/30

    摘要： There is provided an image information process apparatus to be applied to a display for displaying bit image display data for each pixel, for enabling the display to display continuous tones in an error diffusion manner based on P bit image data, P being larger than L. This apparatus includes a plurality of adding circuits to which a plurality of P bit image data are concurrently supplied. A predetermined lower bit of an added result at respective adding circuits is used as error data supplied to the next adjacent adding circuit. An error data holding circuit holds a predetermined lower bit of an output from an adding circuit corresponding to the last column pixel in image data supplied. It then supplies the lower bit held to an adding circuit corresponding to the top front column pixel of the image data supplied. With this arrangement, a display which is capable of displaying images based on digital data of a limited number of bits displays in a pseudo manner continuous tones expressed using a higher number of bits than the limited number. In addition, performance and processing speed of image information processing are improved.

    摘要翻译： 提供了一种应用于显示器的图像信息处理装置，用于显示每个像素的位图像显示数据，以使得显示器能够以P位图像数据P大于L的方式以误差扩散方式显示连续色调。 该装置包括多个附加电路，多个P位图像数据被同时提供给该多个加法电路。 作为向下一个相邻加法电路提供的误差数据，使用各加法电路的相加结果的预定的低位。 误差数据保持电路保持来自与提供的图像数据中的最后列像素对应的加法电路的输出的预定的低位。 然后，将保持的低位提供给与提供的图像数据的顶部前列像素相对应的加法电路。 利用这种布置，能够以有限位数的数字数据显示图像的显示器以伪限制的数量显示以连续色调的连续色调。 此外，提高了图像信息处理的性能和处理速度。

    Liquid crystal display having a light collecting mechanism with a light transmitter optically connected to the light guide plate and light collector for collecting ambient light
    6.
    发明授权
    Liquid crystal display having a light collecting mechanism with a light transmitter optically connected to the light guide plate and light collector for collecting ambient light 有权
    具有光收发机构的液晶显示装置，其具有与导光板光学连接的光发射器和用于收集环境光的集光器

    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。

    Digital correction circuit and image data processing apparatus equipped with a digital correction circuit
    7.
    发明授权
    Digital correction circuit and image data processing apparatus equipped with a digital correction circuit 有权
    具有数字校正电路的数字校正电路和图像数据处理装置

    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。

    Backlight for liquid crystal displays
    8.
    发明授权
    Backlight for liquid crystal displays 有权
    背光用于液晶显示器

    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。

    Image data processing through changing error diffusing technique depending upon kind of images
    9.
    发明授权
    Image data processing through changing error diffusing technique depending upon kind of images 失效
    通过根据图像种类改变误差扩散技术的图像数据处理

    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。

    Charge pump type power supply circuit and driving circuit for display device and display device using such power supply circuit
    10.
    发明授权
    Charge pump type power supply circuit and driving circuit for display device and display device using such power supply circuit 有权
    电荷泵型电源电路和显示装置的驱动电路以及使用这种电源电路的显示装置

    公开(公告)号：US06891427B2

    公开(公告)日：2005-05-10

    申请号：US09823328

    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： G02F1/133 ,  G09G3/20 ,  G09G3/36 ,  H02M1/36 ,  H02M3/07 ,  G09G5/00

    CPC分类号： H02M1/36 ,  G09G3/3696 ,  H02M3/07

    摘要： A driving circuit of a display device such as a liquid crystal generates power supply clocks (1 and 2) based on a system clock during the normal display operation which is not a power save mode. The generated power supply clocks are supplied, directly or after inversion, to the switches (SW1 through SW4 (and SW5 through SW8)) in a charge pump type power supply circuit (300) for switching the connection of capacitors (C1 and C2 (and C11 and C12)) in the power supply circuit (300). In this manner, supply voltages VDD2 and VDD3 which function as the driving power supply for a driving circuit (100) and a display panel (200) can be obtained at the power supply circuit (300) by boosting the input voltage Vin. The driving circuit (100) stops supply of the power supply clocks to the power supply circuit (300) when a transition to the power save mode is instructed and a power save control signal generated by a CPU I/F circuit (16) is changed, thereby suspending generation of the supply voltage an consumption of power consumption at the circuit and display panel.

    摘要翻译： 诸如液晶的显示装置的驱动电路在不是省电模式的正常显示操作期间基于系统时钟产生电源时钟（1和2）。 在用于切换电容器（C）的连接的电荷泵型电源电路（300）中，将所产生的电源时钟直接或反转后提供给开关（SW 1至SW 4（和SW 5至SW 8）） 1和C 2（和C 11和C 12））。 以这种方式，通过升压输入电压Vin，可以在电源电路（300）获得用作驱动电路（100）和显示面板（200）的驱动电源的电源电压VDD 2和VDD 3。 驱动电路（100）在指示向省电模式的转变时停止向电源电路（300）供给电源时钟，并且由CPU I / F电路（16）产生的省电控制信号发生变化 从而暂停生成电源电压消耗电路和显示面板的功耗。