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1. 发明申请

US20110206290A1 DISPLAY DRIVING CIRCUIT 有权
标题翻译：显示驱动电路
公开(公告)号：US20110206290A1
公开(公告)日：2011-08-25
申请号：US13033659
申请日：2011-02-24
申请人： Yukari Katayama , Akihito Akai , Yoshiki Kurokawa , Yusuke Uchida
发明人： Yukari Katayama , Akihito Akai , Yoshiki Kurokawa , Yusuke Uchida
IPC分类号： G06K9/36
CPC分类号： G09G3/3648 , G09G2320/0252 , G09G2320/0261 , G09G2320/0686 , G09G2320/103 , G09G2340/02 , G09G2340/16 , H04N19/124 , H04N19/146 , H04N19/172 , H04N19/42 , H04N19/60
摘要： The display driving circuit includes: an OD (OverDrive) calculation circuit operable to generate an OD driving signal for improving the response characteristic of a display device according to display image data; a drive-output circuit operable to supply an OD driving signal to the display device; and a compression circuit operable to store compressed display data in a memory. The compression circuit includes a DCT calculation module operable to execute DCT (Discrete Cosine Transform) of display image data, and an entropy coding module operable to execute variable length entropy coding of DCT conversion display data. Preferably, the display driving circuit further includes a decompression circuit operable to supply an OD calculation circuit with display data resulting from decompression of compressed display data read out the memory.
摘要翻译：显示驱动电路包括：OD（OverDrive）计算电路，用于根据显示图像数据产生用于改善显示装置的响应特性的OD驱动信号; 驱动输出电路，其可操作以向所述显示装置提供OD驱动信号; 以及可操作以将压缩显示数据存储在存储器中的压缩电路。压缩电路包括可以执行显示图像数据的DCT（离散余弦变换）的DCT计算模块和可操作以执行DCT变换显示数据的可变长度熵编码的熵编码模块。优选地，显示驱动电路还包括解压缩电路，其可操作以向OD计算电路提供由对存储器读出的压缩显示数据的解压缩而得到的显示数据。

2. 发明授权

US08699803B2 Display driving circuit 有权
标题翻译：显示驱动电路
公开(公告)号：US08699803B2
公开(公告)日：2014-04-15
申请号：US13033659
申请日：2011-02-24
申请人： Yukari Katayama , Akihito Akai , Yoshiki Kurokawa , Yusuke Uchida
发明人： Yukari Katayama , Akihito Akai , Yoshiki Kurokawa , Yusuke Uchida
IPC分类号： G06K9/36
CPC分类号： G09G3/3648 , G09G2320/0252 , G09G2320/0261 , G09G2320/0686 , G09G2320/103 , G09G2340/02 , G09G2340/16 , H04N19/124 , H04N19/146 , H04N19/172 , H04N19/42 , H04N19/60
摘要： The display driving circuit includes: an OD (OverDrive) calculation circuit operable to generate an OD driving signal for improving the response characteristic of a display device according to display image data; a drive-output circuit operable to supply an OD driving signal to the display device; and a compression circuit operable to store compressed display data in a memory. The compression circuit includes a DCT calculation module operable to execute DCT (Discrete Cosine Transform) of display image data, and an entropy coding module operable to execute variable length entropy coding of DCT conversion display data. Preferably, the display driving circuit further includes a decompression circuit operable to supply an OD calculation circuit with display data resulting from decompression of compressed display data read out the memory.
摘要翻译：显示驱动电路包括：OD（OverDrive）计算电路，用于根据显示图像数据产生用于改善显示装置的响应特性的OD驱动信号; 驱动输出电路，其可操作以向所述显示装置提供OD驱动信号; 以及可操作以将压缩显示数据存储在存储器中的压缩电路。压缩电路包括可以执行显示图像数据的DCT（离散余弦变换）的DCT计算模块和可操作以执行DCT变换显示数据的可变长度熵编码的熵编码模块。优选地，显示驱动电路还包括解压缩电路，其可操作以向OD计算电路提供由对存储器读出的压缩显示数据的解压缩而得到的显示数据。

3. 发明申请

US20100302287A1 DISPLAY DRIVING DEVICE AND DISPLAY DRIVING SYSTEM 审中-公开
标题翻译：显示驱动装置和显示驱动系统
公开(公告)号：US20100302287A1
公开(公告)日：2010-12-02
申请号：US12785982
申请日：2010-05-24
申请人： Yukari KATAYAMA , Akihito Akai , Yoshiki Kurokawa , Yusuke Uchida
发明人： Yukari KATAYAMA , Akihito Akai , Yoshiki Kurokawa , Yusuke Uchida
IPC分类号： G09G5/10 , G09G5/00
CPC分类号： G09G3/3648 , G09G2310/027 , G09G2320/0252 , G09G2320/0261 , G09G2320/041 , G09G2340/16
摘要： Overdrive over multiple frames is made more efficient in a display device drive circuit that drives a display device so slow in response that target brightness is not reached even after overdrive is performed for one frame. When a display gray scale is changed from a first gray scale to a second gray scale, a display driving device varies overdrive driving voltage according to the number of frames since the point of time of the change. This makes it possible to obtain high-speed luminance response. When the number of frames for which an identical image is continuously displayed is known beforehand, the number of frames is set in a display pattern setting register and a function of detecting timing of a change of images is provided. This enables efficient overdrive. At low temperature, further, a display image is updated once for several frames according to temperature information. This enhances the visibility of the image.
摘要翻译：在显示设备驱动电路中，即使在一帧执行过驱动之后，在显示设备驱动电路中对驱动显示设备如此慢的响应也不会达到目标亮度，因此在多个帧上进行过载。当显示灰度级从第一灰度级变为第二灰度级时，显示驱动装置根据从改变的时间点开始的帧数来改变过驱动驱动电压。这使得可以获得高速亮度响应。当预先知道连续显示相同图像的帧数时，在显示模式设置寄存器中设置帧数，并且提供检测图像改变定时的功能。这样可以实现高效的超速运行。此外，在低温下，显示图像根据温度信息更新一次数帧。这增强了图像的可视性。

4. 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。

5. 发明授权

US08325128B2 Display device and driving circuit thereof 失效
标题翻译：显示装置及其驱动电路
公开(公告)号：US08325128B2
公开(公告)日：2012-12-04
申请号：US12170518
申请日：2008-07-10
申请人： Yukari Katayama , Yoshiki Kurokawa , Akihito Akai , Goro Sakamaki
发明人： Yukari Katayama , Yoshiki Kurokawa , Akihito Akai , Goro Sakamaki
IPC分类号： G09G3/36
CPC分类号： G09G3/3611 , G09G3/3406 , G09G3/3688 , G09G3/3696 , G09G2310/027 , G09G2320/0252 , G09G2320/0271 , G09G2320/041 , G09G2320/0646 , G09G2320/0673 , G09G2340/16 , G09G2360/18
摘要： In a display device such as a liquid crystal display, a processing for compressing a range of display data (grayscale) to a low grayscale side (a grayscale range where response is fast) except for a high grayscale side (a grayscale range where response is slow) at a predetermined compression ratio to conduct display according to response characteristic of transition between grayscales and a temperature state and a processing for increasing a light amount of a backlight to compensate for luminance change due to the compression are performed, for example, in a liquid crystal panel of TN liquid crystal. Thereby, response can be made fast even at a low temperature time.
摘要翻译：在诸如液晶显示器的显示装置中，除了高灰阶侧（响应为灰度等级的灰度级范围）之外，将显示数据（灰度级）的范围压缩到低灰度级（响应快的灰度范围）慢），以根据灰阶和温度状态之间的转变的响应特性进行显示，并且例如在一个例如在一个例子中执行用于增加背光的光量以补偿由于压缩引起的亮度变化的处理 TN液晶液晶面板。因此即使在低温时也可以做出快速响应。

6. 发明申请

US20080316167A1 DISPLAY DRIVER 审中-公开
标题翻译：显示驱动器
公开(公告)号：US20080316167A1
公开(公告)日：2008-12-25
申请号：US12134726
申请日：2008-06-06
申请人： Yoshiki KUROKAWA , Yukari Katayama , Yasuyuki Kudo , Akihito Akai , Goki Toshima , Akihisa Aoyama
发明人： Yoshiki KUROKAWA , Yukari Katayama , Yasuyuki Kudo , Akihito Akai , Goki Toshima , Akihisa Aoyama
IPC分类号： G09G3/36
CPC分类号： G09G3/3406 , G09G3/3611 , G09G2320/064 , G09G2320/0646 , G09G2320/066 , G09G2330/021 , G09G2360/16
摘要： A display driver driving a display panel according to inputted display data comprises: a first circuit changing brightness of a display image by conversion of the display data based on a first reference value and a second reference value, the first reference value being a display data value at a first position in an upper part of a histogram of the inputted display data, and the second reference value being a display data value at a second position in a lower portion of the histogram; a second circuit changing brightness of a illuminating device illuminating the display panel based on the first reference value; and a control circuit performing a processing of making the brightness of the display image high by the first circuit and a processing of making the brightness of the illuminating device low by the second circuit in correlation with the brightness of the display image.
摘要翻译：根据输入的显示数据驱动显示面板的显示驱动器包括：第一电路，通过基于第一参考值和第二参考值转换显示数据来改变显示图像的亮度，第一参考值是显示数据值在输入的显示数据的直方图的上部的第一位置处，并且第二参考值是在直方图的下部的第二位置处的显示数据值; 基于第一参考值改变照明显示面板的照明装置的亮度的第二电路; 以及控制电路，执行通过第一电路使显示图像的亮度变高的处理，以及通过与显示图像的亮度相关地将第二电路的照明装置的亮度降低的处理。

7. 发明申请

US20110242112A1 Display device and driving circuit thereof 审中-公开
标题翻译：显示装置及其驱动电路
公开(公告)号：US20110242112A1
公开(公告)日：2011-10-06
申请号：US12750794
申请日：2010-03-31
申请人： Yukari KATAYAMA , Akihito Akai , Yoshiki Kurokawa , Takashi Shoji
发明人： Yukari KATAYAMA , Akihito Akai , Yoshiki Kurokawa , Takashi Shoji
IPC分类号： G06T1/00 , G06T9/00
CPC分类号： G09G5/36 , G09G2340/02 , G09G2360/18 , H04N19/115 , H04N19/154 , H04N19/17 , H04N19/196 , H04N19/198
摘要： The display driver includes: a display data compression circuit; a recording circuit; a display data decompression circuit; and an output circuit. Further, the display driver is provided with a compressibility setting circuit. The display data compression circuit has the function of compressing the display data according to a compressibility set by the compressibility setting circuit. With the display driver arranged like this, the power consumption can be reduced by increasing the compressibility for a displayed image such that the image quality is not noticeably deteriorated even with the compressibility increased. Further, for the displayed image such that the image quality is noticeably deteriorated with the compressibility increased, a sufficient image quality after data decompression can be secured by lowering the compressibility.
摘要翻译：显示驱动器包括：显示数据压缩电路; 记录电路; 显示数据解压缩电路; 和输出电路。此外，显示驱动器设置有压缩性设定电路。显示数据压缩电路具有根据由压缩性设定电路设定的压缩率压缩显示数据的功能。通过这样布置的显示驱动器，可以通过增加显示图像的压缩率来降低功耗，使得即使压缩率增加，图像质量也不会显着劣化。此外，对于所显示的图像，使得图像质量在可压缩性增加时显着劣化，可以通过降低压缩性来确保数据解压缩之后的足够的图像质量。

8. 发明申请

US20090015532A1 DISPLAY DEVICE AND DRIVING CIRCUIT THEREOF 失效
标题翻译：显示设备及其驱动电路
公开(公告)号：US20090015532A1
公开(公告)日：2009-01-15
申请号：US12170518
申请日：2008-07-10
申请人： Yukari Katayama , Yoshiki Kurokawa , Akihito Akai , Goro Sakamaki
发明人： Yukari Katayama , Yoshiki Kurokawa , Akihito Akai , Goro Sakamaki
IPC分类号： G09G3/36
CPC分类号： G09G3/3611 , G09G3/3406 , G09G3/3688 , G09G3/3696 , G09G2310/027 , G09G2320/0252 , G09G2320/0271 , G09G2320/041 , G09G2320/0646 , G09G2320/0673 , G09G2340/16 , G09G2360/18
摘要： In a display device such as a liquid crystal display, a processing for compressing a range of display data (grayscale) to a low grayscale side (a grayscale range where response is fast) except for a high grayscale side (a grayscale range where response is slow) at a predetermined compression ratio to conduct display according to response characteristic of transition between grayscales and a temperature state and a processing for increasing a light amount of a backlight to compensate for luminance change due to the compression are performed, for example, in a liquid crystal panel of TN liquid crystal. Thereby, response can be made fast even at a low temperature time.
摘要翻译：在诸如液晶显示器的显示装置中，除了高灰阶侧（响应为灰度等级的灰度级范围）之外，将显示数据（灰度级）的范围压缩到低灰度级（响应快的灰度范围）慢），以根据灰阶和温度状态之间的转变的响应特性进行显示，并且例如在一个例如在一个例子中执行用于增加背光的光量以补偿由于压缩引起的亮度变化的处理 TN液晶液晶面板。因此即使在低温时也可以做出快速响应。

9. 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。

10. 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。

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