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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: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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