公开(公告)号：US08081199B2

公开(公告)日：2011-12-20

申请号：US12769399

申请日：2010-04-28

申请人： Go Takata ,  Hideyuki Nakanishi ,  Toshiki Onishi ,  Akihiro Yamamura ,  Takahiro Kobayashi

发明人： Go Takata ,  Hideyuki Nakanishi ,  Toshiki Onishi ,  Akihiro Yamamura ,  Takahiro Kobayashi

IPC分类号： G09G3/32 ,  G09G3/36 ,  G09G5/02

CPC分类号： H05B33/0815 ,  G09G3/342 ,  G09G2320/0233 ,  G09G2320/064 ,  G09G2330/021 ,  H05B33/0827 ,  Y02B20/346

摘要： A light emitting element drive apparatus that drives light emitting elements reduces power loss caused by variability between forward voltage drops of the light emitting elements. A plurality of voltage applying sections (1, 32 and 33; and 2, 34 and 35) generate application voltages based on a detection voltage determined based on a maximum forward voltage drop among the forward voltage drops of the light emitting element arrays (11 to 14), and apply the generated application voltages to the light emitting elements (11 to 14). Switching sections (30 and 31) switch between a plurality of voltage applying sections (1, 32 and 33; and 2, 34 and 35) to which the light emitting element arrays (11 to 14) individually connect. Controlling sections (40 to 42) control the switching sections (30 and 31) to switch connection to minimize the difference between forward voltage drops of light emitting element arrays (11 to 14).

摘要翻译： 驱动发光元件的发光元件驱动装置降低了由发光元件的正向电压降之间的变化引起的功率损耗。 多个电压施加部分（1,32和33;和2,34和35）基于基于发光元件阵列（11至22）的正向电压降中的最大正向压降确定的检测电压产生施加电压 14），并将生成的施加电压施加到发光元件（11〜14）。 开关部分（30和31）在发光元件阵列（11至14）单独连接的多个电压施加部分（1,32和33;以及2,34和35）之间切换。 控制部分（40至42）控制开关部分（30和31）以切换连接，以最小化发光元件阵列（11至14）的正向压降之间的差异。

公开(公告)号：US08581941B2

公开(公告)日：2013-11-12

申请号：US13203213

申请日：2010-09-29

申请人： Toshiki Onishi ,  Hideyuki Nakanishi ,  Takahiro Kobayashi ,  Yoshio Umeda ,  Akihiro Yamamura ,  Seiji Hamada

发明人： Toshiki Onishi ,  Hideyuki Nakanishi ,  Takahiro Kobayashi ,  Yoshio Umeda ,  Akihiro Yamamura ,  Seiji Hamada

IPC分类号： G09G5/10

CPC分类号： G09G3/3426 ,  G09G2320/0261 ,  G09G2320/0633 ,  G09G2320/064 ,  G09G2320/0653 ,  G09G2320/106 ,  H04N5/66

摘要： Provided is a backlight device wherein when the drive duty and the drive current are controlled according to a motion, the image quality is improved by preventing flicker caused by the change of the drive waveform. A light-emitting unit (121) comprises a plurality of light-emitting areas. A motion amount detecting unit (131) detects the motion amount of an image in each of a plurality of motion areas each corresponding to at least one or more light-emitting areas. A drive condition specifying unit specifies a drive condition including the duty and pulse height value of a drive pulse for causing each of the plurality of light-emitting areas to emit light, on the basis of the detected motion amount. A drive unit drives each of the plurality of light-emitting areas according to the specified drive condition. The drive condition specifying unit adjusts the drive condition such that the drive condition temporally smoothly changes.

摘要翻译： 提供一种背光装置，其中当根据运动控制驱动占空比和驱动电流时，通过防止由驱动波形的变化引起的闪烁来提高图像质量。 发光单元（121）包括多个发光区域。 运动量检测单元（131）检测每个对应于至少一个或多个发光区域的多个运动区域中的每一个中的图像的运动量。 驱动条件指定单元基于检测到的运动量指定包括用于使多个发光区域中的每一个发光的驱动脉冲的占空比和脉冲高度值的驱动条件。 驱动单元根据指定的驱动条件驱动多个发光区域中的每一个。 驱动条件指定单元调节驱动条件使得驱动条件在时间上平稳地改变。

公开(公告)号：US08207953B2

公开(公告)日：2012-06-26

申请号：US12726787

申请日：2010-03-18

申请人： Akihiro Yamamura ,  Takahiro Kobayashi ,  Hideyuki Nakanishi ,  Toshiki Onishi ,  Seiji Hamada ,  Atsushi Nakanishi

发明人： Akihiro Yamamura ,  Takahiro Kobayashi ,  Hideyuki Nakanishi ,  Toshiki Onishi ,  Seiji Hamada ,  Atsushi Nakanishi

IPC分类号： G06F3/038

CPC分类号： G09G3/3426 ,  G02F2001/133601 ,  G09G3/3648 ,  G09G2320/0646 ,  G09G2360/144

摘要： The backlight apparatus allows brightness control with minimum image quality deterioration. This apparatus has: an illuminating section that radiates illumination light on a back of a liquid crystal panel comprising a plurality of image display areas; and a brightness determining section that determines a light emission brightness value of the illuminating section and renews a light emitting state of the illuminating section, based on the determined light emission brightness value. The illuminating section has light emitting areas illuminating each of a plurality of image display areas. The brightness determining section determines light emission brightness values of the image display areas, from values acquired by applying weights to the information based on input image signals of the image display areas, and changes the weights for the information based on luminance of ambient light surrounding the backlight apparatus.

摘要翻译： 背光装置允许以最小图像质量劣化的亮度控制。 该装置具有：照明部，其在包括多个图像显示区域的液晶面板的背面上照射照明光; 以及亮度确定部，其基于所确定的发光亮度值，确定所述照明部的发光亮度值，并且更新所述照明部的发光状态。 照明部具有照亮多个图像显示区域中的每一个的发光区域。 亮度确定部分根据通过基于图像显示区域的输入图像信号对该信息应用加权而获得的值来确定图像显示区域的发光亮度值，并且基于围绕该图像显示区域的周围环境光的亮度来改变该信息的权重 背光装置。

公开(公告)号：US20110316902A1

公开(公告)日：2011-12-29

申请号：US13255365

申请日：2010-09-29

申请人： Toshiki Onishi ,  Hideyuki Nakanishi ,  Takahiro Kobayashi ,  Yoshio Umeda ,  Akihiro Yamamura ,  Seiji Hamada

发明人： Toshiki Onishi ,  Hideyuki Nakanishi ,  Takahiro Kobayashi ,  Yoshio Umeda ,  Akihiro Yamamura ,  Seiji Hamada

IPC分类号： G09G5/10 ,  G09G3/36

CPC分类号： G09G3/3426 ,  G09G3/3611 ,  G09G2310/024 ,  G09G2320/0261 ,  G09G2320/0633 ,  G09G2320/064 ,  G09G2320/0646 ,  G09G2320/066 ,  G09G2320/10 ,  G09G2320/106 ,  G09G2360/16 ,  H04N5/144 ,  H04N5/44591 ,  H04N5/66 ,  H04N21/4318 ,  H04N21/44008

摘要： Provided is a backlight device, wherein when both the drive duty and the drive current are controlled in each of separated areas, the image quality is improved by preventing the change of luminance even when there is a difference between the adjustment resolutions of both the drive duty and the drive current. A light-emitting unit (121) comprises a plurality of light-emitting areas. A motion amount detecting unit (131) detects the motion amount of an image in each of a plurality of motion areas each corresponding to at least one or more light-emitting areas. A drive condition specifying unit specifies a drive condition including the duty and pulse height value of a drive pulse for causing each of the plurality of light-emitting areas to emit light, on the basis of the detected motion amount. A drive unit drives each of the plurality of light-emitting areas according to the specified drive condition. With one of the duty and the pulse height value of the drive pulse, the adjustment resolution of which of the drive unit with respect to the light emission luminance is lower, as a first parameter and the other the adjustment resolution of which is higher as a second parameter, the drive condition specifying unit determines the value of the first parameter on the basis of the detected motion amount, and thereafter determines the value of the second parameter on the basis of the determined value of the first parameter.

摘要翻译： 提供一种背光装置，其中当驱动占空比和驱动电流都在每个分离区域中被控制时，即使当两个驱动占空比的调节分辨率之间存在差异时，也防止亮度变化来提高图像质量 和驱动电流。 发光单元（121）包括多个发光区域。 运动量检测单元（131）检测每个对应于至少一个或多个发光区域的多个运动区域中的每一个中的图像的运动量。 驱动条件指定单元基于检测到的运动量指定包括用于使多个发光区域中的每一个发光的驱动脉冲的占空比和脉冲高度值的驱动条件。 驱动单元根据指定的驱动条件驱动多个发光区域中的每一个。 利用驱动脉冲的占空比和脉冲高度值中的一个，相对于发光亮度的驱动单元的调节分辨率较低，作为第一参数，另一个调整分辨率高于 第二参数，驱动条件指定单元基于检测到的运动量确定第一参数的值，然后基于确定的第一参数的值来确定第二参数的值。

公开(公告)号：US20110304657A1

公开(公告)日：2011-12-15

申请号：US13203181

申请日：2010-09-28

申请人： Akihiro Yamamura ,  Takahiro Kobayashi ,  Yoshio Umeda ,  Hideyuki Nakanishi ,  Toshiki Onishi ,  Seiji Hamada

发明人： Akihiro Yamamura ,  Takahiro Kobayashi ,  Yoshio Umeda ,  Hideyuki Nakanishi ,  Toshiki Onishi ,  Seiji Hamada

IPC分类号： G09G5/10

CPC分类号： G09G3/3426 ,  G02F1/133603 ,  G02F2001/133601 ,  G09G3/3611 ,  G09G2300/0434 ,  G09G2320/0247 ,  G09G2320/0261 ,  G09G2320/0276 ,  G09G2320/103 ,  G09G2320/106 ,  G09G2360/16

摘要： Disclosed is a backlight device that reduces elevated black levels and the visibility of flickering when displaying a video. A light-emitting unit (121) is provided with a plurality of light-emitting areas that individually emit illumination light, and illuminates a liquid crystal panel (110) with the illumination light from the plurality of light-emitting areas. A motion detection unit (150) detects image motion from an image signal. A brightness control unit (130) acquires a brightness determination reference value for each light-emitting area on the basis of the image signal, and in regards to each of the plurality of light-emitting areas, weights the acquired brightness determination reference value for each of the one or more light-emitting areas that constitute a weighting region and determines the light emission brightness value for each of the light-emitting areas on the basis of the weighting results. An LED driver (122) drives each of the plurality of light-emitting areas in accordance with the determined light emission brightness value for each of the light-emitting areas. The brightness control unit (130) dynamically sets the light-emitting areas that constitute the weighting areas in accordance with the detected motion.

摘要翻译： 公开了一种背光装置，其在显示视频时降低升高的黑色电平和闪烁的可见性。 发光单元（121）设置有分别发出照明光的多个发光区域，并且利用来自多个发光区域的照明光照射液晶面板（110）。 运动检测单元（150）从图像信号检测图像运动。 亮度控制单元基于图像信号获取每个发光区域的亮度确定基准值，并且对于多个发光区域中的每一个，对于每个发光区域，对于每个发光区域，获取的亮度确定基准值 构成加权区域的一个或多个发光区域，并且基于加权结果确定每个发光区域的发光亮度值。 LED驱动器（122）根据每个发光区域的确定的发光亮度值来驱动多个发光区域中的每一个。 亮度控制单元（130）根据检测到的运动动态地设定构成加权区域的发光区域。

公开(公告)号：US20120013652A1

公开(公告)日：2012-01-19

申请号：US13203213

申请日：2010-09-29

申请人： Toshiki Onishi ,  Hideyuki Nakanishi ,  Takahiro Kobayashi ,  Yoshio Umeda ,  Akihiro Yamamura ,  Seiji Hamada

发明人： Toshiki Onishi ,  Hideyuki Nakanishi ,  Takahiro Kobayashi ,  Yoshio Umeda ,  Akihiro Yamamura ,  Seiji Hamada

IPC分类号： G09G5/10

CPC分类号： G09G3/3426 ,  G09G2320/0261 ,  G09G2320/0633 ,  G09G2320/064 ,  G09G2320/0653 ,  G09G2320/106 ,  H04N5/66

摘要： Provided is a backlight device wherein when the drive duty and the drive current are controlled according to a motion, the image quality is improved by preventing flicker caused by the change of the drive waveform. A light-emitting unit (121) comprises a plurality of light-emitting areas. A motion amount detecting unit (131) detects the motion amount of an image in each of a plurality of motion areas each corresponding to at least one or more light-emitting areas. A drive condition specifying unit specifies a drive condition including the duty and pulse height value of a drive pulse for causing each of the plurality of light-emitting areas to emit light, on the basis of the detected motion amount. A drive unit drives each of the plurality of light-emitting areas according to the specified drive condition. The drive condition specifying unit adjusts the drive condition such that the drive condition temporally smoothly changes.

摘要翻译： 提供一种背光装置，其中当根据运动控制驱动占空比和驱动电流时，通过防止由驱动波形的变化引起的闪烁来提高图像质量。 发光单元（121）包括多个发光区域。 运动量检测单元（131）检测每个对应于至少一个或多个发光区域的多个运动区域中的每一个中的图像的运动量。 驱动条件指定单元基于检测到的运动量指定包括用于使多个发光区域中的每一个发光的驱动脉冲的占空比和脉冲高度值的驱动条件。 驱动单元根据指定的驱动条件驱动多个发光区域中的每一个。 驱动条件指定单元调节驱动条件使得驱动条件在时间上平稳地改变。

公开(公告)号：US08743481B2

公开(公告)日：2014-06-03

申请号：US13457399

申请日：2012-04-26

申请人： Akihiro Yamamura

发明人： Akihiro Yamamura

IPC分类号： G02B3/00 ,  G02B13/00

CPC分类号： G02B3/0056 ,  B41J2/451 ,  G02B3/0062 ,  G02B13/001 ,  G03G15/04054 ,  G03G15/0435 ,  H04N1/0311

摘要： A lens plate includes at least one lens row including a plurality of lenses aligned in a first direction, each lens including a lens surface that includes perimeter portions extending in a second direction substantially perpendicular to the first direction such that two adjacent lenses are contiguous with each other at the perimeter portions.

摘要翻译： 透镜板包括至少一个透镜行，该透镜行包括沿第一方向排列的多个透镜，每个透镜包括透镜表面，该透镜表面包括沿基本上垂直于第一方向的第二方向延伸的周边部分，使得两个相邻的透镜与每个 另外在周边部分。

公开(公告)号：US08675281B2

公开(公告)日：2014-03-18

申请号：US13479325

申请日：2012-05-24

申请人： Akihiro Yamamura

发明人： Akihiro Yamamura

IPC分类号： G02B27/10 ,  G02B3/00

CPC分类号： G02B3/0056 ,  G02B27/123 ,  H04N1/02865 ,  H04N1/0311 ,  H04N1/032

摘要： A lens unit includes first and second arrays of microlenses. The microlenses in the first array have mutually parallel optical axes and are aligned in a meridional direction orthogonal to their optical axes. The microlenses in the second array are aligned in the same direction as the lenses in the first array, and have optical axes that coincide with the optical axes of corresponding microlenses in the first array. The microlenses in the first array collimate light incident in a sagittal plane orthogonal to the meridional direction. The microlenses in the second array focus the collimated light in the sagittal plane. The lens unit is useful in the scanning heads of scanning devices, the LED heads of LED printers, and in the exposure devices of other electrophotographic image forming apparatus.

摘要翻译： 透镜单元包括第一和第二微透镜阵列。 第一阵列中的微透镜具有相互平行的光轴并且在与其光轴正交的子午方向上对准。 第二阵列中的微透镜在与第一阵列中的透镜相同的方向上对准，并且具有与第一阵列中的相应微透镜的光轴重合的光轴。 第一阵列中的微透镜校准入射在与子午方向正交的矢状面中的光。 第二阵列中的微透镜将准直光聚焦在矢状平面中。 透镜单元在扫描装置的扫描头，LED打印机的LED头以及其它电子照相成像装置的曝光装置中是有用的。

公开(公告)号：US08023205B2

公开(公告)日：2011-09-20

申请号：US12697557

申请日：2010-02-01

申请人： Akihiro Yamamura

发明人： Akihiro Yamamura

IPC分类号： G02B5/00

CPC分类号： G02B3/005 ,  B41J2/451 ,  G02B3/0062

摘要： A lens array includes a lens assembly member and a light blocking member. The lens assembly member includes lens elements arranged in an arrangement direction substantially perpendicular to optical axes thereof. The light blocking member includes apertures extending and passing thought the optical axes. The lens assembly members and the light blocking member are arranged so that the following relationship is satisfied: RAY/RLY

摘要翻译： 透镜阵列包括透镜组件和遮光构件。 透镜组件包括沿基本上垂直于其光轴的排列方向布置的透镜元件。 遮光构件包括考虑光轴延伸和通过的孔。 透镜组件和阻光构件被布置成使得满足以下关系：RAY / RLY

公开(公告)号：US20100177400A1

公开(公告)日：2010-07-15

申请号：US12654986

申请日：2010-01-12

申请人： Akihiro Yamamura

发明人： Akihiro Yamamura

IPC分类号： G02B27/12

CPC分类号： G02B3/0056 ,  B41J2/451 ,  G02B3/0075 ,  G03G15/04054 ,  G03G15/326

摘要： A lens array forms an erect image of an object. The lens array includes at least one row of lens elements and at least one rib. The lens elements are aligned in a first direction perpendicular to optical axes of the lens elements having an incidence surface and an exit surface. The rib is formed on the lens array and extending in a second direction parallel to the first direction and in a third direction parallel to the optical axes further than the incidence surface and the exit surface. A lens unit includes a shielding member and the lens array assembled to the shielding member. The shielding member includes diaphragms formed therein and aligned in a first direction, and a first engagement portion. The lens array includes a second engagement portion for engaging the first engagement portion to correct deformation of the lens array.

摘要翻译： 透镜阵列形成物体的直立图像。 透镜阵列包括至少一排透镜元件和至少一个肋。 透镜元件在垂直于具有入射表面和出射表面的透镜元件的光轴的第一方向上对准。 肋形成在透镜阵列上，并且在平行于第一方向的第二方向上延伸，并且在与入射面和出射面更远的光轴平行的第三方向上延伸。 透镜单元包括屏蔽构件和组装到屏蔽构件的透镜阵列。 屏蔽构件包括形成在其中并沿第一方向对准的隔膜和第一接合部分。 透镜阵列包括用于接合第一接合部分以校正透镜阵列的变形的第二接合部分。