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1. 发明授权

US08552946B2 Display device, display driver and image display method 有权
标题翻译：显示设备，显示驱动程序和图像显示方法
公开(公告)号：US08552946B2
公开(公告)日：2013-10-08
申请号：US12108583
申请日：2008-04-24
申请人： Yoshiki Kurokawa , Yukari Katayama , Hiroki Awakura , Naoki Takada , Yasuyuki Kudo , Akihito Akai , Goki Toshima , Akihisa Aoyama , Goro Sakamaki
发明人： Yoshiki Kurokawa , Yukari Katayama , Hiroki Awakura , Naoki Takada , Yasuyuki Kudo , Akihito Akai , Goki Toshima , Akihisa Aoyama , Goro Sakamaki
IPC分类号： G09G3/36
CPC分类号： G09G3/3406 , G09G3/3611 , G09G2320/0276 , G09G2320/064 , G09G2320/0646 , G09G2320/0653 , G09G2320/066 , G09G2330/021 , G09G2360/145 , G09G2360/16
摘要： In a display device and a display driver, when a grayscale of a display image is equal to or lower than a specific grayscale value obtained from a histogram of the display image, a display grayscale is extended with a linear function. On the other hand, when a grayscale of a display image is equal to or higher than the specific grayscale value, histogram equalization of a part higher than the specific grayscale value is performed, and the display grayscale is extended with a non-linear function obtained from the histogram equalization.
摘要翻译：在显示装置和显示驱动器中，当显示图像的灰阶等于或低于从显示图像的直方图获得的特定灰度值时，以线性函数扩展显示灰度级。另一方面，当显示图像的灰阶等于或高于特定灰度值时，执行高于特定灰度值的部分的直方图均衡，并且利用获得的非线性函数来扩展显示灰度级从直方图均衡。

2. 发明申请

US20080079756A1 DISPLAY DRIVER 审中-公开
标题翻译：显示驱动器
公开(公告)号：US20080079756A1
公开(公告)日：2008-04-03
申请号：US11779673
申请日：2007-07-18
申请人： Akihito Akai , Yasuyuki Kudo , Yoshiki Kurokawa , Goro Sakamaki , Hiroki Awakura , Naoki Takada
发明人： Akihito Akai , Yasuyuki Kudo , Yoshiki Kurokawa , Goro Sakamaki , Hiroki Awakura , Naoki Takada
IPC分类号： G09G5/10
CPC分类号： G09G3/3406 , G09G3/3688 , G09G2320/0261 , G09G2320/0613 , G09G2320/0626 , G09G2320/064 , G09G2320/0646 , G09G2340/145 , G09G2360/16
摘要： A liquid crystal driver of liquid crystal display device in which a plurality of expansion/contraction ratios of display data, for example, two kinds of expansion/contraction ratios can be set in a register is provided. Further, the two kinds of expansion/contraction ratios are applicable respectively in two kinds of areas (still-image and video-image) whose coordinates are previously set in a liquid crystal panel. As a result, it is possible to make the still-image area and the video-image area have different expansion/contraction ratios of pixel value respectively. In this manner, it is possible to make display brightness high only in the video-image area, thereby realizing both lower power consumption and visibility improvement at the same time.
摘要翻译：提供了一种液晶显示装置的液晶驱动器，其中可以在寄存器中设置显示数据的多个扩展/缩小比例，例如两种扩展/缩放比。此外，两种扩张/收缩率分别适用于在液晶面板中预先设定坐标的两种区域（静止图像和视频图像）。结果，可以使静止图像区域和视频图像区域分别具有不同的像素值的扩展/缩小比率。以这种方式，可以仅在视频图像区域中使显示亮度高，从而同时实现较低的功耗和可见度提高。

3. 发明授权

US08754841B2 Display driver 有权
标题翻译：显示驱动程序
公开(公告)号：US08754841B2
公开(公告)日：2014-06-17
申请号：US13734144
申请日：2013-01-04
申请人： Naoki Takada , Yasuyuki Kudo , Yoshiki Kurokawa , Goro Sakamaki
发明人： Naoki Takada , Yasuyuki Kudo , Yoshiki Kurokawa , Goro Sakamaki
IPC分类号： G09G3/34 , G02F1/13357
CPC分类号： G09G3/3413 , G09G3/3406 , G09G5/10 , G09G2320/064 , G09G2320/0646 , G09G2320/0653 , G09G2330/021 , G09G2360/144 , G09G2360/16
摘要： In a display driver, a first backlight control unit using a histogram and a second backlight control unit using an optical sensor can be used in combination. The display driver includes a PWM generating unit setting a control signal value consisting of a product of a luminance rate of X % and a luminance rate of Y % as a luminance rate of a control signal for controlling a backlight with respect to maximum backlight luminance when a luminance rate of a control signal obtained by first backlight control with respect to the maximum backlight luminance is X % and a luminance rate of a control signal obtained by second backlight control with respect to the maximum backlight luminance is Y %.
摘要翻译：在显示驱动器中，可以组合使用使用直方图的第一背光控制单元和使用光学传感器的第二背光控制单元。显示驱动器包括PWM生成单元，其将由X％的亮度率和Y％的亮度率的乘积构成的控制信号值作为用于控制背光源的控制信号的亮度率相对于最大背光亮度而设置，通过相对于最大背光亮度的第一背光控制获得的控制信号的亮度率为X％，并且通过相对于最大背光亮度的第二背光控制获得的控制信号的亮度率为Y％。

4. 发明申请

US20080272999A1 DISPLAY DEVICE, DISPLAY DRIVER AND IMAGE DISPLAY METHOD 有权
标题翻译：显示设备，显示驱动器和图像显示方法
公开(公告)号：US20080272999A1
公开(公告)日：2008-11-06
申请号：US12108583
申请日：2008-04-24
申请人： Yoshiki Kurokawa , Yukari Katayama , Hiroki Awakura , Naoki Takada , Yasuyuki Kudo , Akihito Akai , Goki Toshimi , Akihisa Aoyama , Goro Sakamaki
发明人： Yoshiki Kurokawa , Yukari Katayama , Hiroki Awakura , Naoki Takada , Yasuyuki Kudo , Akihito Akai , Goki Toshimi , Akihisa Aoyama , Goro Sakamaki
IPC分类号： G09G3/36
CPC分类号： G09G3/3406 , G09G3/3611 , G09G2320/0276 , G09G2320/064 , G09G2320/0646 , G09G2320/0653 , G09G2320/066 , G09G2330/021 , G09G2360/145 , G09G2360/16
摘要： In a display device and a display driver, when a grayscale of a display image is equal to or lower than a specific grayscale value obtained from a histogram of the display image, a display grayscale is extended with a linear function. On the other hand, when a grayscale of a display image is equal to or higher than the specific grayscale value, histogram equalization of a part higher than the specific grayscale value is performed, and the display grayscale is extended with a non-linear function obtained from the histogram equalization.
摘要翻译：在显示装置和显示驱动器中，当显示图像的灰阶等于或低于从显示图像的直方图获得的特定灰度值时，以线性函数扩展显示灰度级。另一方面，当显示图像的灰阶等于或高于特定灰度值时，执行高于特定灰度值的部分的直方图均衡，并且利用获得的非线性函数来扩展显示灰度级从直方图均衡。

5. 发明申请

US20080129763A1 DISPLAY BRIGHTNESS CONTROL CIRCUIT 有权
标题翻译：显示亮度控制电路
公开(公告)号：US20080129763A1
公开(公告)日：2008-06-05
申请号：US11923970
申请日：2007-10-25
申请人： Hiroki AWAKURA , Akihito Akai , Yoshiki Kurokawa , Naoki Takada , Goro Sakamaki
发明人： Hiroki AWAKURA , Akihito Akai , Yoshiki Kurokawa , Naoki Takada , Goro Sakamaki
IPC分类号： G09G5/10
CPC分类号： G09G3/3406 , G09G3/3233 , G09G2300/0842 , G09G2320/064 , G09G2360/144
摘要： A display brightness control circuit of a liquid crystal display device includes a logarithmic-linear converting circuit for converting an illuminance signal having a logarithmic relationship with incident light into a linear signal. When an output of an external light sensor is a logarithmic signal, the logarithmic signal is converted into a linear signal through the logarithmic-linear converting circuit, and when an output of the external light sensor is a linear signal, the logarithmic-linear converting circuit is not involved. The logarithmic-linear converting circuit corresponds to an exponential circuit which is an inverse function of a logarithm log. Further, when even the same logarithmic output illuminance sensor is different in input-output characteristics, setting of the abovementioned exponential circuit can be changed.
摘要翻译：液晶显示装置的显示亮度控制电路包括对数线性转换电路，用于将具有入射光的对数关系的照度信号转换为线性信号。当外部光传感器的输出是对数信号时，通过对数线性转换电路将对数信号转换成线性信号，并且当外部光传感器的输出是线性信号时，对数线性转换电路不参与对数线性转换电路对应于作为对数日志的反函数的指数电路。此外，即使相同的对数输出照度传感器在输入输出特性上不同，也可以改变上述指数电路的设定。

6. 发明授权

US08059141B2 Display brightness control circuit 有权
标题翻译：显示亮度控制电路
公开(公告)号：US08059141B2
公开(公告)日：2011-11-15
申请号：US11923970
申请日：2007-10-25
申请人： Hiroki Awakura , Akihito Akai , Yoshiki Kurokawa , Naoki Takada , Goro Sakamaki
发明人： Hiroki Awakura , Akihito Akai , Yoshiki Kurokawa , Naoki Takada , Goro Sakamaki
IPC分类号： G09G5/10
CPC分类号： G09G3/3406 , G09G3/3233 , G09G2300/0842 , G09G2320/064 , G09G2360/144
摘要： A display brightness control circuit of a liquid crystal display device includes a logarithmic-linear converting circuit for converting an illuminance signal having a logarithmic relationship with incident light into a linear signal. When an output of an external light sensor is a logarithmic signal, the logarithmic signal is converted into a linear signal through the logarithmic-linear converting circuit, and when an output of the external light sensor is a linear signal, the logarithmic-linear converting circuit is not involved. The logarithmic-linear converting circuit corresponds to an exponential circuit which is an inverse function of a logarithm log. Further, when even the same logarithmic output illuminance sensor is different in input-output characteristics, setting of the abovementioned exponential circuit can be changed.
摘要翻译：液晶显示装置的显示亮度控制电路包括对数线性转换电路，用于将具有入射光的对数关系的照度信号转换为线性信号。当外部光传感器的输出是对数信号时，通过对数线性转换电路将对数信号转换成线性信号，并且当外部光传感器的输出是线性信号时，对数线性转换电路不参与对数线性转换电路对应于作为对数日志的反函数的指数电路。此外，即使相同的对数输出照度传感器在输入输出特性上不同，也可以改变上述指数电路的设定。

7. 发明授权

US07724265B2 Display driver 失效
标题翻译：显示驱动程序
公开(公告)号：US07724265B2
公开(公告)日：2010-05-25
申请号：US11545535
申请日：2006-10-11
申请人： Naoki Takada , Yasuyuki Kudo , Goro Sakamaki
发明人： Naoki Takada , Yasuyuki Kudo , Goro Sakamaki
IPC分类号： G06F3/038 , G09G5/00 , G09G5/02 , H04N7/01 , H04N11/06 , G03F3/08 , G06K9/00
CPC分类号： G09G3/2003 , G09G2340/02 , G09G2340/06
摘要： A YUV format to be stored in a memory is selected from A or B by a format judging unit for RGB data that is the input output display data of a memory unit, based on the comparison between chrominance (U, V) difference information on horizontal two pixels and the threshold values of U difference and V difference to be resistor-set at a format judging unit. The YUV data and information of A or B that are YUV format-converted at the format conversion unit are stored in the memory. The selection of the YUV format of A or B is, when the chrominance difference information is small as compared with the threshold value the format is YUV 422 (B conversion), and when it is large the format is that the low order bits of Y, U, V of each pixel are reduced (A conversion).
摘要翻译：基于水平上的色度（U，V）差异信息之间的比较，通过用于作为存储器单元的输入输出显示数据的RGB数据的格式判断单元从A或B中选择要存储在存储器中的YUV格式两个像素和U差的阈值和V差在格式判断单元处被电阻设置。在格式转换单元中YUV格式转换的YUV数据和A或B的信息被存储在存储器中。 A或B的YUV格式的选择是，当色差信息与阈值相比较小时，格式为YUV 422（B转换），当它大时，格式是Y的低位比特，每个像素的U，V减小（A转换）。

8. 发明申请

US20070091115A1 Display driver 失效
标题翻译：显示驱动程序
公开(公告)号：US20070091115A1
公开(公告)日：2007-04-26
申请号：US11545535
申请日：2006-10-11
申请人： Naoki Takada , Yasuyuki Kudo , Goro Sakamaki
发明人： Naoki Takada , Yasuyuki Kudo , Goro Sakamaki
IPC分类号： G09G5/02
CPC分类号： G09G3/2003 , G09G2340/02 , G09G2340/06
摘要： A YUV format to be stored in a memory is selected from A or B by a format judging unit for RGB data that is the input output display data of a memory unit, based on the comparison between chrominance (U, V) difference information on horizontal two pixels and the threshold values of U difference and V difference to be resistor-set at a format judging unit. The YUV data and information of A or B that are YUV format-converted at the format conversion unit are stored in the memory. The selection of the YUV format of A or B is, when the chrominance difference information is small as compared with the threshold value the format is YUV 422 (B conversion), and when it is large the format is that the low order bits of Y, U, V of each pixel are reduced (A conversion).
摘要翻译：基于水平上的色度（U，V）差异信息之间的比较，通过用于作为存储器单元的输入输出显示数据的RGB数据的格式判断单元从A或B中选择要存储在存储器中的YUV格式两个像素和U差的阈值和V差在格式判断单元处被电阻设置。在格式转换单元中YUV格式转换的YUV数据和A或B的信息被存储在存储器中。 A或B的YUV格式的选择是，当色差信息与阈值相比较小时，格式为YUV 422（B转换），当它大时，格式是Y的低位比特，每个像素的U，V减小（A转换）。

9. 发明申请

US20060227628A1 Display driver and display driving method 审中-公开
标题翻译：显示驱动和显示驱动方式
公开(公告)号：US20060227628A1
公开(公告)日：2006-10-12
申请号：US11299743
申请日：2005-12-13
申请人： Takuya Eriguchi , Yasuyuki Kudo , Akihito Akai , Naoki Takada , Goro Sakamaki
发明人： Takuya Eriguchi , Yasuyuki Kudo , Akihito Akai , Naoki Takada , Goro Sakamaki
IPC分类号： G11C7/06
CPC分类号： G09G3/20 , G09G3/3688 , G09G2310/0235 , G09G2310/0248 , G09G2310/027 , G09G2310/0297 , G09G2320/0209
摘要： In a display driver, a period D following a period P in one scanning period is divided into periods R, G, and B in which data voltages are applied to data lines R, G, and B, and two output orders of the data voltage such as the period R→the period G→period B and the period B→the period G→period R are switched in each two frames.
摘要翻译：在显示驱动器中，在一个扫描周期内的周期P之后的周期D被划分成数据电压施加到数据线R，G和B的时段R，G和B，数据电压的两个输出次数例如在每两帧中切换周期R->周期G->周期B和周期B->周期G->周期R。

10. 发明授权

US08314761B2 Display device 有权
标题翻译：显示设备
公开(公告)号：US08314761B2
公开(公告)日：2012-11-20
申请号：US13524099
申请日：2012-06-15
申请人： Naoki Takada , Yasuyuki Kudo , Yoshiki Kurokawa , Norio Mamba , Shinichi Komura
发明人： Naoki Takada , Yasuyuki Kudo , Yoshiki Kurokawa , Norio Mamba , Shinichi Komura
IPC分类号： G09G5/02 , G09G3/36 , G09G5/10 , G06F15/00
CPC分类号： G09G3/3607 , G09G3/3406 , G09G2320/0261 , G09G2320/0276 , G09G2320/0646 , G09G2360/16
摘要： A processing portion for conversion from RGB to RGBW includes a W generating circuit, a sub-pixel rendering circuit, a W intensity calculating portion which transmits a W intensity setting value to a W generating circuit, and a low power backlight control circuit which expands data on the basis of the RGBW pixels generated by the sub-pixel rendering portion and lowers the backlight in accordance with the amount by which the data is expanded. The inputted RGB data is used as the RGBW data with the W intensity calculated by the W intensity calculating portion. A backlight control signal is generated based on the amount of data expansion in the sub-pixel rendering portion. Deterioration (darkness) of image quality due to a reduction in the brightness of a single color as a result of the conversion from RGB pixels to RGBW pixels is prevented and a reduction in the power is achieved.
摘要翻译：用于从RGB转换为RGBW的处理部分包括W发生电路，子像素渲染电路，向W发生电路发送W强度设置值的W强度计算部分和扩展数据的低功率背光控制电路基于由子像素渲染部分生成的RGBW像素，并且根据数据扩展的量来降低背光。输入的RGB数据被用作由W强度计算部分计算出的W强度的RGBW数据。基于子像素渲染部分中的数据扩展量产生背光控制信号。防止了由于RGB像素向RGBW像素的转换而导致的单色亮度降低导致的图像质量恶化（暗度），并且能够实现功率的降低。

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