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1. 发明授权

US06894666B2 Contrast correcting circuit 失效
标题翻译：对比度校正电路
公开(公告)号：US06894666B2
公开(公告)日：2005-05-17
申请号：US10305013
申请日：2002-11-27
申请人： Masayuki Otawara , Hidehito Ogawa , Ryutaro Okamoto
发明人： Masayuki Otawara , Hidehito Ogawa , Ryutaro Okamoto
IPC分类号： G09G3/20 , G09G3/28 , G09G3/36 , G09G5/06 , G09G5/10
CPC分类号： G09G3/2007 , G09G3/28 , G09G2320/0285 , G09G2320/0606 , G09G2320/066 , G09G2360/16
摘要： A contrast correcting circuit for preventing white distortion in a dark screen comprises: an integrator for integrating brightness levels of video signals, and for calculating a sum of the brightness levels; a ROM for storing different types of table data exhibiting contrast conversion characteristics according to the brightness; a selection signal generator for setting as a reference value the sum of the brightness levels of all of the pixels when the brightness levels are at a maximum, for comparing the reference value with an integration output of the integrator, and for instructing the ROM to selectively output table data suitable for the brightness of a screen selected from the different types of table data; and a RAM for storing a conversion table for correcting the contrasts of the video signals by means of the table data.
摘要翻译：用于防止黑屏中的白色失真的对比度校正电路包括：积分器，用于对视频信号的亮度级进行积分，并用于计算亮度级之和; 用于存储根据亮度显示对比度转换特性的不同类型的表数据的ROM; 选择信号发生器，用于将亮度级最大时的所有像素的亮度级之和设置为参考值，用于将参考值与积分器的积分输出进行比较，并用于选择性地指示ROM 输出表数据适合于从不同类型的表数据中选择的屏幕的亮度; 以及用于存储用于通过表格数据校正视频信号的对比度的转换表的RAM。

2. 发明申请

US20100002148A1 IMAGE SIGNAL PROCESSING APPARATUS, IMAGE SIGNAL PROCESSING METHOD, COMPUTER PROGRAM, AND DISPLAY DEVICE 审中-公开
标题翻译：图像信号处理装置，图像信号处理方法，计算机程序和显示装置
公开(公告)号：US20100002148A1
公开(公告)日：2010-01-07
申请号：US12497817
申请日：2009-07-06
申请人： Masayuki Otawara , Hidehito Ogawa , Ryutaro Okamoto
发明人： Masayuki Otawara , Hidehito Ogawa , Ryutaro Okamoto
IPC分类号： H04N5/52 , H04N5/66
CPC分类号： G09G3/2081 , G09G3/3233 , G09G3/3258 , G09G2300/0866 , G09G2320/0247 , G09G2320/0261 , G09G2320/103
摘要： An image signal processing apparatus and method of controlling the light emission state of each pixel in a display device are provided. The image signal processing apparatus includes a correlation determination unit which determines a correlation between a current frame and a previous frame, and outputs a correlation signal of a signal level according to a determination result; a light emission time setting unit which outputs a light emission time control signal that defines a light emission time in one frame period, based on the correlation signal; an adjustment value setting unit which outputs an adjustment value that adjusts a gain of the image signal, based on the correlation signal; and a gain adjustment unit which adjusts the gain of the image signal based on the adjustment value and outputs the image signal of which the gain is adjusted. The light emission intensity is uniform regardless of the determination result.
摘要翻译：提供了一种用于控制显示装置中每个像素的发光状态的图像信号处理装置和方法。图像信号处理装置包括相关确定单元，其确定当前帧与先前帧之间的相关性，并且根据确定结果输出信号电平的相关信号; 发光时间设定单元，其基于所述相关信号输出限定一帧周期中的发光时间的发光时间控制信号; 调整值设定单元，其基于所述相关信号输出调整所述图像信号的增益的调整值; 以及增益调整单元，其基于调整值来调整图像信号的增益，并输出调整了增益的图像信号。无论确定结果如何，发光强度均匀。

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