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公开(公告)号:US20130285890A1
公开(公告)日:2013-10-31
申请号:US13929344
申请日:2013-06-27
申请人: Norio MAMBA , Naoki TAKADA , Yasuki KUDO , Tsutomu FURUHASHI
发明人: Norio MAMBA , Naoki TAKADA , Yasuki KUDO , Tsutomu FURUHASHI
IPC分类号: G09G3/34
CPC分类号: G09G3/3413 , G09G3/3406 , G09G3/3611 , G09G2320/0242 , G09G2320/0646 , G09G2320/0666 , G09G2330/021 , G09G2340/06 , G09G2360/16
摘要: An image processing unit (2 in FIG. 1) discards a high gray level side of input image data (RiGiBi) in accordance with a chroma coefficient (Csc), thereby to generate a signal of lowered chroma, and it expands the signal into output image data (RoGoBo) of full scale. Besides, the image processing unit (2) generates an image adjustment parameter (Th) and performs a control so as to reduce power of backlight (6), in interlocking with the fullscale expansion.
摘要翻译: 图像处理单元(图1中的2)根据色度系数(Csc)丢弃输入图像数据(RiGiBi)的高灰度侧,从而生成降低色度的信号,并且将信号扩展成输出 图像数据(RoGoBo)全尺寸。 此外,图像处理单元(2)产生图像调整参数(Th),并且执行控制以便与全尺寸展开互锁来降低背光(6)的功率。
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公开(公告)号:US20110050553A1
公开(公告)日:2011-03-03
申请号:US12844877
申请日:2010-07-28
IPC分类号: G09G3/36
CPC分类号: G09G3/3688 , G09G3/3614 , G09G2310/0248 , G09G2310/0297 , G09G2320/0247 , G09G2330/021
摘要: A liquid crystal display device employing a dot inversion drive method includes a pixel array, a data driver circuit, a short circuit, and a scanning circuit. The short circuit is disposed for respective outputs of the data driver circuit, and includes a switching element for connecting each of the outputs to a precharge voltage different from an output voltage. The short circuit includes the switching element disposed in one of a first switching group and a second switching group; the switching element of one of the first switching group and the second switching group is connected to respective pairs of pixel column units including an odd-numbered pixel column and an even-numbered pixel column which are adjacent to each other; and the pairs of pixel column units which are adjacent to each other are each connected to the switching element disposed in respective switching groups different from each other.
摘要翻译: 采用点反转驱动方法的液晶显示装置包括像素阵列,数据驱动电路,短路和扫描电路。 为数据驱动电路的各个输出设置短路,并且包括用于将每个输出连接到不同于输出电压的预充电电压的开关元件。 短路包括设置在第一开关组和第二开关组之一中的开关元件; 第一开关组和第二开关组之一的开关元件连接到彼此相邻的包括奇数像素列和偶数像素列的各对像素列单元; 并且彼此相邻的像素列单元对各自连接到彼此不同的设置在各个开关组中的开关元件。
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公开(公告)号:US20120249613A1
公开(公告)日:2012-10-04
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: G09G5/10
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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公开(公告)号:US20090058844A1
公开(公告)日:2009-03-05
申请号:US12248572
申请日:2008-10-09
申请人: Naoki TAKADA , Hiroyuki Nitta , Nobuyuki Koganezawa , Kikuo Ono , Takashi Shoji
发明人: Naoki TAKADA , Hiroyuki Nitta , Nobuyuki Koganezawa , Kikuo Ono , Takashi Shoji
IPC分类号: G06F3/038
CPC分类号: G09G3/3648 , G09G2310/021 , G09G2310/0251 , G09G2310/062 , G09G2320/0261
摘要: A scan driver selects first four rows of pixels at a time and then sequentially selects second four rows of pixels for each row in double gate driving. A data driver supplies a tone voltage corresponding to black data to the first four row of pixels at a time and then sequentially supplies a tone voltage corresponding to display data to the second four rows of pixels.
摘要翻译: 扫描驱动器一次选择前四行像素,然后在双门驱动中依次选择每行的第四行像素。 数据驱动器一次将与黑色数据相对应的音调电压提供给前四行像素,然后将与显示数据相对应的音调电压顺序地提供给第二行四行像素。
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公开(公告)号:US20130120480A1
公开(公告)日:2013-05-16
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: G09G5/10
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%。
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公开(公告)号:US20080136844A1
公开(公告)日:2008-06-12
申请号:US11943199
申请日:2007-11-20
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: G09G5/10
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%。
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公开(公告)号:US20130044146A1
公开(公告)日:2013-02-21
申请号:US13647710
申请日:2012-10-09
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
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,并且通过获得的非线性函数来扩展显示灰度级 从直方图均衡。
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公开(公告)号:US20100265242A1
公开(公告)日:2010-10-21
申请号:US12760582
申请日:2010-04-15
申请人: Naoki TAKADA , Naruhiko Kasai , Takuya Eriguchi , Yuki Okada , Mitsuru Goto , Akihito Akai
发明人: Naoki TAKADA , Naruhiko Kasai , Takuya Eriguchi , Yuki Okada , Mitsuru Goto , Akihito Akai
CPC分类号: H02M3/156
摘要: A power circuit includes a coil that charges an electric charge of an input voltage, a switch device that controls charging and discharging of the coil, a diode that rectifies the flow of the electric charge from the coil, a capacitor that stabilizes an output voltage when the switch device is turned on, and a driving circuit that controls ON and OFF states of the switch device. The power circuit alternately switches the ON and OFF states of the switch device to control charging and discharging of the coil and the capacitor, and generates and supplies an output voltage higher than the input voltage, and the driving circuit controls the off-period of the switch device according to the on-period of the switch device and the voltage ratio of the output voltage and the input voltage while changing the repetition period of the ON and OFF states of the switch device.
摘要翻译: 电源电路包括对输入电压的电荷进行充电的线圈,控制线圈的充电和放电的开关装置,对来自线圈的电荷的流量进行整流的二极管,稳定输出电压的电容器, 开关装置被接通,以及控制开关装置的ON和OFF状态的驱动电路。 电源电路交替地切换开关器件的导通和截止状态,以控制线圈和电容器的充电和放电,并产生并提供高于输入电压的输出电压,并且驱动电路控制 开关装置根据开关装置的导通周期和开关装置的ON和OFF状态的重复周期,输出电压和输入电压的电压比。
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