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    • 1. 发明授权
    • Evaluation apparatus of liquid crystal display device, liquid crystal display device, and evaluation method of liquid crystal display device
    • 液晶显示装置的评价装置,液晶显示装置以及液晶显示装置的评价方法
    • US07525559B2
    • 2009-04-28
    • US10773227
    • 2004-02-09
    • Tomoo FurukawaMakoto ShiomiMitsuhiro Shigeta
    • Tomoo FurukawaMakoto ShiomiMitsuhiro Shigeta
    • G09G5/10
    • G09G3/006G09G3/3611G09G2320/0252G09G2320/0261G09G2320/0285G09G2340/16
    • An evaluation apparatus of a liquid crystal display device in accordance with the present invention is provided with a signal section for supplying a signal to a liquid crystal panel to be evaluated; a display detection section for sensing a display state on the liquid crystal panel; an analysis section for analyzing a detection result of the display detection section. The signal section supplies to the liquid crystal panel a signal corresponding to an original tone and then, in accordance with tone transition from the original tone to an attainment tone, either (i) an overshoot test signal or (ii) both an overshoot test signal and an undershoot test signal in test driving, while sweeping either a level of the signal (i) or levels of both the signals (ii). The analysis section analyzes detection results of the display detection section obtained in the test driving and stores in association with the original tone and the attainment tone, a level of the test signal that corresponds to an optimum one of the detection results. With this, it is possible to easily and highly accurately obtain an optimum level of the overshoot signal or the undershoot signal for the liquid crystal panel to be evaluated.
    • 根据本发明的液晶显示装置的评估装置设置有用于将信号提供给待评估的液晶面板的信号部分; 显示检测部,用于检测液晶面板上的显示状态; 用于分析显示检测部分的检测结果的分析部分。 信号部分向液晶面板提供对应于原始音调的信号,然后根据从原始音调到达到音调的音调转换,(i)过冲测试信号或(ii)过冲测试信号 和测试驱动中的下冲测试信号,同时扫描信号(i)的电平或两个信号(ii)的电平。 分析部分分析在测试驱动中获得的显示检测部分的检测结果,并与原始音调和获得音调相关联地存储与最佳检测结果对应的测试信号的电平。 由此,可以容易且高精度地获得要评估的液晶面板的过冲信号或下冲信号的最佳电平。
    • 2. 发明授权
    • Driving system for display device
    • 显示设备驱动系统
    • US07738000B2
    • 2010-06-15
    • US11065246
    • 2005-02-25
    • Tomoo FurukawaMakoto ShiomiTai ShiraishiMitsuhiro Shigeta
    • Tomoo FurukawaMakoto ShiomiTai ShiraishiMitsuhiro Shigeta
    • G09G5/02
    • G09G3/2055G09G3/3611G09G2320/0252G09G2320/0261G09G2320/0276G09G2320/0285G09G2340/16
    • A driving system of the present invention for use in a displaying device is provided with a pseudo bit-depth extension section. In the pseudo bit-depth extension section, a noise pattern is added to upper-n-bit data of an input signal D0 in m-bit, where (i) m is an integer of 9 or greater, and (ii) n is an integer of 8 or greater, but less than m. Then, upper-n-bit of data D1 thus obtained from the D0 is outputted, as output data D2, from the pseudo bit-depth extension section. The driving system is further provided with an overshoot-driving section for carrying out an overshoot-driving with respect to each of pixels. A noise amount of the noise pattern is 1 or less in 8-bit data, and a calculation in the overshoot-driving section is carried out with n-bit data. With this driving system which adopts a combination of (a) a overshoot-driving method for enforcing liquid crystal to respond at a high speed, and (b) a bit-depth extension technology in which a number of grayscales is increased by adding noise, it is possible to provide, at a low cost, a high-definition displaying device such as a liquid crystal display, having a high-response-characteristics and a high quality of grayscale reproduction.
    • 用于显示装置的本发明的驱动系统具有伪位深度延伸部分。 在伪比特深度扩展部分中,将噪声模式添加到m位中的输入信号D0的高n位数据,其中(i)m是9或更大的整数,并且(ii)n是 8或更大,但小于m的整数。 然后,从D0获得的数据D1的上n位作为输出数据D2从伪位深度扩展部分输出。 驱动系统还设置有用于对每个像素进行过冲驱动的过冲驱动部。 在8位数据中噪声模式的噪声量为1或更小,并且利用n位数据执行过冲驱动部分中的计算。 该驱动系统采用(a)用于强制液晶高速响应的过冲驱动方法的组合,以及(b)通过增加噪声增加多个灰度级的位深度扩展技术, 可以以低成本提供具有高响应特性和高质量的灰度再现的诸如液晶显示器的高清晰度显示装置。
    • 3. 发明申请
    • Driving system for display device
    • 显示设备驱动系统
    • US20050190610A1
    • 2005-09-01
    • US11065246
    • 2005-02-25
    • Tomoo FurukawaMakoto ShiomiTai ShiraishiMitsuhiro Shigeta
    • Tomoo FurukawaMakoto ShiomiTai ShiraishiMitsuhiro Shigeta
    • G02F1/133G09G3/20G09G3/36G11C5/00
    • G09G3/2055G09G3/3611G09G2320/0252G09G2320/0261G09G2320/0276G09G2320/0285G09G2340/16
    • A driving system of the present invention for use in a displaying device is provided with a pseudo bit-depth extension section. In the pseudo bit-depth extension section, a noise pattern is added to upper-n-bit data of an input signal D0 in m-bit, where (i) m is an integer of 9 or greater, and (ii) n is an integer of 8 or greater, but less than m. Then, upper-n-bit of data D1 thus obtained from the D0 is outputted, as output data D2, from the pseudo bit-depth extension section. The driving system is further provided with an overshoot-driving section for carrying out an overshoot-driving with respect to each of pixels. A noise amount of the noise pattern is 1 or less in 8-bit data, and a calculation in the overshoot-driving section is carried out with n-bit data. With this driving system which adopts a combination of (a) a overshoot-driving method for enforcing liquid crystal to respond at a high speed, and (b) a bit-depth extension technology in which a number of grayscales is increased by adding noise, it is possible to provide, at a low cost, a high-definition displaying device such as a liquid crystal display, having a high-response-characteristics and a high quality of grayscale reproduction.
    • 用于显示装置的本发明的驱动系统具有伪位深度延伸部分。 在伪比特深度扩展部分中,将噪声模式添加到m比特中的输入信号D 0的高n位数据,其中(i)m为9或更大的整数,以及(ii)n 是8或更大的整数,但小于m。 然后,从D 0得到的数据D 1的上n位作为输出数据D 2从伪位深度扩展部分输出。 驱动系统还设置有用于对每个像素进行过冲驱动的过冲驱动部。 在8位数据中噪声模式的噪声量为1或更小,并且利用n位数据执行过冲驱动部分中的计算。 该驱动系统采用(a)用于强制液晶高速响应的过冲驱动方法的组合,以及(b)通过增加噪声增加多个灰度级的位深度扩展技术, 可以以低成本提供具有高响应特性和高质量的灰度再现的诸如液晶显示器的高清晰度显示装置。
    • 4. 发明授权
    • Driving system for display device
    • 显示设备驱动系统
    • US07936347B2
    • 2011-05-03
    • US12659390
    • 2010-03-08
    • Tomoo FurukawaMakoto ShiomiTai ShiraishiMitsuhiro Shigeta
    • Tomoo FurukawaMakoto ShiomiTai ShiraishiMitsuhiro Shigeta
    • G09G5/00
    • G09G3/2055G09G3/3611G09G2320/0252G09G2320/0261G09G2320/0276G09G2320/0285G09G2340/16
    • A driving system of the present invention for use in a displaying device is provided with a pseudo bit-depth extension section. In the pseudo bit-depth extension section, a noise pattern is added to upper-n-bit data of an input signal D0 in m-bit, where (i) m is an integer of 9 or greater, and (ii) n is an integer of 8 or greater, but less than m. Then, upper-n-bit of data D1 thus obtained from the D0 is outputted, as output data D2, from the pseudo bit-depth extension section. The driving system is further provided with an overshoot-driving section for carrying out an overshoot-driving with respect to each of pixels. A noise amount of the noise pattern is 1 or less in 8-bit data, and a calculation in the overshoot-driving section is carried out with n-bit data. With this driving system which adopts a combination of (a) a overshoot-driving method for enforcing liquid crystal to respond at a high speed, and (b) a bit-depth extension technology in which a number of grayscales is increased by adding noise, it is possible to provide, at a low cost, a high-definition displaying device such as a liquid crystal display, having a high-response-characteristics and a high quality of grayscale reproduction.
    • 用于显示装置的本发明的驱动系统具有伪位深度延伸部分。 在伪比特深度扩展部分中,将噪声模式添加到m位中的输入信号D0的高n位数据,其中(i)m是9或更大的整数,并且(ii)n是 8或更大,但小于m的整数。 然后,从D0获得的数据D1的上n位作为输出数据D2从伪位深度扩展部分输出。 驱动系统还设置有用于对每个像素进行过冲驱动的过冲驱动部。 在8位数据中噪声模式的噪声量为1或更小,并且利用n位数据执行过冲驱动部分中的计算。 该驱动系统采用(a)用于强制液晶高速响应的过冲驱动方法的组合,以及(b)通过增加噪声增加多个灰度级的位深度扩展技术, 可以以低成本提供具有高响应特性和高质量的灰度再现的诸如液晶显示器的高清晰度显示装置。
    • 7. 发明授权
    • Image data processing device, liquid crystal display apparatus including same, display apparatus driving device, display apparatus driving method, program therefor, and storage medium
    • 图像数据处理装置,包括其的液晶显示装置,显示装置驱动装置,显示装置驱动方法,程序和存储介质
    • US08493299B2
    • 2013-07-23
    • US11792590
    • 2005-12-08
    • Makoto ShiomiMitsuhiro ShigetaKazunari Tomizawa
    • Makoto ShiomiMitsuhiro ShigetaKazunari Tomizawa
    • G09G3/30
    • G09G3/3648G09G2320/0252G09G2320/0285G09G2340/16
    • In cases where the amount of gradation transition is greater than a threshold value, a modulation processing section corrects image data D of a current frame by making an interpolation calculation with reference to a look-up table, and output the image data D thus corrected. In cases where the amount of gradation transition is not more than the threshold value, the modulation processing section directly outputs the image data D of the current frame. Furthermore, in one embodiment of the present invention, the look-up table contains, as output image data D2 corresponding to a case where the image data D of the current frame is identical to image data D0 of a previous frame, a value which is neither of the image data D of the current frame and the image data D0 of the previous frame and by which output image data D2 corresponding to the inputted image data D and D0 of the previous and current frames is calculated according to the interpolation calculation in cases where the amount of gradation transition is greater than the threshold value. With this, an image display apparatus is realized which can be balanced between a reduction in circuit size and an improvement in display quality at a higher level.
    • 在灰度转换量大于阈值的情况下,调制处理部通过参照查找表进行插补计算来校正当前帧的图像数据D,并输出由此校正的图像数据D. 在灰度转换量不大于阈值的情况下,调制处理部直接输出当前帧的图像数据D. 此外,在本发明的一个实施例中,查找表包含对应于当前帧的图像数据D与前一帧的图像数据D0相同的情况的输出图像数据D2,其值为 根据情况下的内插计算,计算当前帧的图像数据D和前一帧的图像数据D0以及与之前和当前帧的输入图像数据D和D0相对应的输出图像数据D2 其中灰度转换的量大于阈值。 由此,实现了能够在电路尺寸的减小和显示质量的提高的同时平衡的图像显示装置。