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1. 发明专利

JP2009124744A Video display device 有权
标题翻译：视频显示设备
公开(公告)号：JP2009124744A
公开(公告)日：2009-06-04
申请号：JP2009011514
申请日：2009-01-22
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OKA NAOYA , HASEGAWA AKIRA , TSURU YASUTAKA , AOKI KOJI , SAKAMOTO HIROFUMI
IPC分类号： H04N9/64 , H04N5/66 , H04N9/12
摘要： PROBLEM TO BE SOLVED: To improve the contrast sensation, by applying gamma correction processing corresponding to the case where there are a plurality of feature regions which number large in the frequency of a detected luminance histogram.
SOLUTION: APL of an input video signal and a luminance histogram calculation result are used to perform gamma correction processing, corresponding to the brightness of the input video signal, and gradation expansion processing is performed on a plurality of and a large number of feature regions in the frequency of the detected luminance histogram detected so that contrast sensation is improved, by applying an optimal processing according to the input video signal.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了改善对比度感觉，通过对与检测到的亮度直方图的频率中具有大数量的多个特征区域的情况相对应的伽马校正处理来应用伽马校正处理。解决方案：输入视频信号和亮度直方图计算结果的APL用于执行与输入视频信号的亮度对应的伽马校正处理，并且对多个和多个检测到的检测到的亮度直方图的频率的特征区域，通过根据输入的视频信号应用最佳处理，从而改善对比度感觉。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2009111936A Video-image display device 审中-公开
标题翻译：视频显示设备
公开(公告)号：JP2009111936A
公开(公告)日：2009-05-21
申请号：JP2007284662
申请日：2007-11-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ASAOKA RIKIYA , KIMURA KATSUNOBU , HASEGAWA AKIRA
IPC分类号： G09G3/20 , G09G3/36 , G09G5/00 , G09G5/14 , G09G5/391 , H04N5/45 , H04N7/01
摘要： PROBLEM TO BE SOLVED: To provide a technique that allows display of high-image-quality video images even in the case of two-screen display while suppressing an increase in costs. SOLUTION: When a plurality of video-image signals having different frame rates are input and the video images are displayed on one screen, motion-compensation frame rate conversion processing is executed to any one of the video-image signals by a first FRC 105 so that a frame rate of one video-image signal is equal to that of the other video-image signal. Preferably, the motion-compensation frame rate conversion processing is executed to a video-image signal having a lower frame rate so that a frame rate of the video-image signal having a lower frame rate is matched with a frame rate of a video-image signal having a frame rate higher than that of the video-image signal having a lower frame rate. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供即使在双屏显示的情况下也能够显示高图像质量的视频图像的技术，同时抑制成本的增加。解决方案：当输入具有不同帧速率的多个视频图像信号并且将视频图像显示在一个屏幕上时，通过第一个视频图像信号对任何一个视频图像信号执行运动补偿帧速率转换处理 FRC 105，使得一个视频图像信号的帧速率等于另一个视频图像信号的帧速率。优选地，对具有较低帧速率的视频图像信号执行运动补偿帧速率转换处理，使得具有较低帧速率的视频图像信号的帧速率与视频图像的帧速率匹配信号的帧速率高于具有较低帧速率的视频图像信号的帧速率。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2006311167A Video processor and video display apparatus 有权
标题翻译：视频处理器和视频显示设备
公开(公告)号：JP2006311167A
公开(公告)日：2006-11-09
申请号：JP2005130751
申请日：2005-04-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAKO MASAHIRO , HASEGAWA AKIRA , OKA NAOYA , ASAOKA RIKIYA
IPC分类号： H04N5/20 , H04N5/202
摘要： PROBLEM TO BE SOLVED: To provide technology with which videos of high picture quality can be displayed by performing suitable gradation correction.
SOLUTION: A video display apparatus is provided with a brightness correction circuit 30 for correcting the brightness of an inputted video signal, a contrast correction circuit 40 for correcting the contrast of the brightness-corrected luminance signal, a gamma correction circuit 50 for performing gamma correction for the contrast-corrected luminance signal, and a control circuit 20. The control circuit 20 controls the brightness correction circuit 30 by using a first luminance histogram indicating the histogram of luminance obtained from luminance signals of the same frame or the same field and controls the gamma correction circuit 50 by using a second luminance histogram generated by changing the first luminance histogram.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供通过执行适当的灰度校正可以显示高图像质量的视频的技术。解决方案：视频显示装置设置有用于校正输入的视频信号的亮度的亮度校正电路30，用于校正亮度校正的亮度信号的对比度的对比度校正电路40，用于对对比度校正的亮度信号进行伽马校正，以及控制电路20.控制电路20通过使用表示从相同帧或相同场的亮度信号获得的亮度的直方图的第一亮度直方图来控制亮度校正电路30 并且通过使用通过改变第一亮度直方图而产生的第二亮度直方图来控制伽马校正电路50。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2006311162A Video processor 有权
标题翻译：视频处理器
公开(公告)号：JP2006311162A
公开(公告)日：2006-11-09
申请号：JP2005130737
申请日：2005-04-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OKA NAOYA , NAKO MASAHIRO , HASEGAWA AKIRA , ASAOKA RIKIYA , HONDA DAISUKE
IPC分类号： H04N5/16 , G09G5/00
CPC分类号： H04N5/20
摘要： PROBLEM TO BE SOLVED: To provide a video processor capable of performing black extension processing more favorably and displaying high-quality video images.
SOLUTION: This video processor is provided with a luminance feature detection unit (4) for detecting a frequency in each of a plurality of luminance regions at least not higher than predetermined luminance by using an inputted video signal, a black extension processing portion (6) for performing black extension processing concerning luminance signals not higher than the predetermined luminance level of the video signal, and a microcomputer (5) which controls the quantity of the black extension of the black extension processing portion by using the frequency in each of the plurality of luminance regions detected by the detection unit.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供能够更有利地执行黑色扩展处理并且显示高质量视频图像的视频处理器。解决方案：该视频处理器设置有亮度特征检测单元（4），用于通过使用输入的视频信号来检测至少不高于预定亮度的多个亮度区域中的每一个中的频率，黑色扩展处理部分（6），用于对不高于视频信号的预定亮度级的亮度信号执行黑色扩展处理;以及微计算机（5），其通过使用每个中的频率来控制黑色扩展处理部分的黑色扩展量由检测单元检测的多个亮度区域。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2006129526A Contrast adjustment method, contrast adjustment circuit, and video display apparatus using the same 有权
标题翻译：对比度调整方法，对比度调整电路和使用其的视频显示设备
公开(公告)号：JP2006129526A
公开(公告)日：2006-05-18
申请号：JP2005369020
申请日：2005-12-22
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： AOKI KOJI , HASEGAWA AKIRA , MATONO TAKAAKI
IPC分类号： H04N5/57 , H04N5/202 , H04N9/68
摘要： PROBLEM TO BE SOLVED: To provide a video display technique whereby a high contrast is obtained stably.
SOLUTION: A contrast adjustment circuit is configured to determine the luminance region of a digital luminance signal subjected to A/D conversion, to which a maximum luminance level within a prescribed period corresponds and a luminance region of the signal to which an average luminance level within the prescribed period corresponds, to adjust the contrast of a video image, by changing the gain of the luminance signal on the basis of both the luminance regional information determined as above, and to apply color density correction to the video image by changing the gain of a color signal.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种稳定获得高对比度的视频显示技术。解决方案：对比度调整电路被配置为确定经过A / D转换的数字亮度信号的亮度区域，其中规定周期内的最大亮度水平对应于其中的平均值的信号的亮度区域在规定时段内的亮度级对应于通过基于上述确定的亮度区域信息改变亮度信号的增益来调整视频图像的对比度，并且通过改变视频图像来对色彩浓度校正彩色信号的增益。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2006093753A Video display 有权
标题翻译：视频显示
公开(公告)号：JP2006093753A
公开(公告)日：2006-04-06
申请号：JP2004272691
申请日：2004-09-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OKA NAOYA , HASEGAWA AKIRA , TSURU YASUTAKA , AOKI KOJI , SAKAMOTO HIROFUMI
IPC分类号： H04N5/20 , G09G3/20 , G09G5/00 , G09G5/10 , G09G5/36 , H04N5/202 , H04N5/66 , H04N9/68 , H04N9/69
CPC分类号： H04N5/202 , H04N9/69
摘要： PROBLEM TO BE SOLVED: To improve the feeling of contrast, when a plurality of feature regions having high frequency of detected luminance histogram exist, by performing a corresponding gamma correction processing.
SOLUTION: Using calculation results of the APL and luminance histogram of an input video signal, gamma correction processing, corresponding to the brightness of the input video signal, is carried out, and gray scale expansion processing is carried out for a plurality of feature regions, having high frequency of detected luminance histograms. Consequently, optimal processing is carried out, depending on the input video signal and feeling of contrast is improved.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题为了提高对比度的感觉，当存在具有检测到的亮度直方图的高频的多个特征区域时，通过执行相应的伽马校正处理。
解决方案：使用输入视频信号的APL和亮度直方图的计算结果，对应于输入视频信号的亮度进行伽马校正处理，并且执行灰度扩展处理特征区域，具有高频率的检测亮度直方图。因此，根据输入的视频信号进行最优处理，提高对比感。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2005260985A Contrast adjustment method, contrast adjustment circuit, and video display apparatus using the same 有权
公开(公告)号：JP2005260985A
公开(公告)日：2005-09-22
申请号：JP2005082902
申请日：2005-03-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： AOKI KOJI , HASEGAWA AKIRA , MATONO TAKAAKI
IPC分类号： G02F1/133 , G09G3/20 , G09G3/28 , G09G3/36 , H04N5/20 , H04N5/66 , H04N9/68
摘要： PROBLEM TO BE SOLVED: To provide a video display technology whereby a high contrast can stably be obtained.
SOLUTION: A contrast adjustment circuit is configured to discriminate a luminance region of a digital luminance signal subjected to A/D conversion to which a maximum luminance level within a prescribed period corresponds and a luminance region of the signal to which an average luminance level within the prescribed period corresponds, to adjust the contrast of a video image by changing the gain of the luminance signal on the basis of both the luminance regional information discriminated as above and to apply color density correction to the video image by changing the gain of a color signal.
COPYRIGHT: (C)2005,JPO&NCIPI

8. 发明专利

JP2005250494A Method and apparatus for video display and contrast adjusting circuit used therefor 有权
标题翻译：用于视频显示和对比度调节电路的方法和装置
公开(公告)号：JP2005250494A
公开(公告)日：2005-09-15
申请号：JP2005082900
申请日：2005-03-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： AOKI KOJI , HASEGAWA AKIRA
IPC分类号： G02F1/133 , G09G3/20 , G09G3/28 , G09G3/36 , H04N5/20 , H04N5/66
摘要： PROBLEM TO BE SOLVED: To provide a video display technique capable of stably obtaining a high contrast even in an area of high luminance.
SOLUTION: Based upon mean luminance level information of a digital luminance signal, black correction processing for lowering the luminance level of an analog or digital luminance signal by offsetting to a negative side and increase processing for a contrast gain within a dynamic range are performed to enable contrast improvement even on a high-luminance side.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：提供即使在高亮度区域也能够稳定地获得高对比度的视频显示技术。解决方案：基于数字亮度信号的平均亮度水平信息，通过偏移到负侧来降低模拟或数字亮度信号的亮度水平的黑色校正处理和用于动态范围内的对比增益的处理增加的黑色校正处理是：进行即使在高亮度侧也能够进行对比度改善。版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JP2005244304A Video image display method and device therefor 有权
标题翻译：视频图像显示方法及其设备
公开(公告)号：JP2005244304A
公开(公告)日：2005-09-08
申请号：JP2004047668
申请日：2004-02-24
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： AOKI KOJI , HASEGAWA AKIRA
IPC分类号： G09G3/36 , G09G3/20 , G09G5/00 , H04N5/208 , H04N5/21 , H04N5/57 , H04N5/66
CPC分类号： G09G3/2003 , G09G2320/02 , G09G2320/0613 , G09G2320/066 , H04N5/57 , H04N21/4318 , H04N21/44008
摘要： PROBLEM TO BE SOLVED: To provide a video image display method and a device therefor capable of displaying a video image on a display screen under optimal state with brightness corresponding to that of an input video signal on the screen. SOLUTION: The video image display performing predetermined processing on an inputted video signal and displaying the video image of the video signal at a display section 2 comprises a circuit 5 for detecting the level of brightness of a video image produced by the inputted video signal, and a controller for regulating a sharpness circuit 6 controlling the sharpness of the video image produced by the inputted video signal based on a detected signal level and controlling the sharpness to increase as the detected signal level increases. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种视频图像显示方法及其装置，其能够在最佳状态下在显示屏幕上显示视频图像，其亮度与屏幕上的输入视频信号的亮度相对应。解决方案：对输入的视频信号执行预定处理并在显示部分2显示视频信号的视频图像的视频图像显示器包括用于检测由输入视频产生的视频图像的亮度水平的电路5 信号，以及控制器，用于调节锐度电路6，其基于检测到的信号电平控制由输入的视频信号产生的视频图像的清晰度，并且随着检测到的信号电平增加而控制锐度增加。版权所有（C）2005，JPO＆NCIPI

10. 发明专利

JP2005086721A Display system, display panel used therefor, and signal processor 有权
标题翻译：显示系统，使用的显示面板和信号处理器
公开(公告)号：JP2005086721A
公开(公告)日：2005-03-31
申请号：JP2003319221
申请日：2003-09-11
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAKADA HARUKI , AOKI KOJI , HASEGAWA AKIRA , SOGABE FUMIO , NAKAGAWA MISAKO
IPC分类号： G09G3/36 , G06F3/14 , G06T1/20 , G09F9/00 , G09G3/20 , G09G3/291 , G09G3/296 , G09G3/34 , G09G5/00 , H04N5/66 , G09G3/28
CPC分类号： G09G5/003 , G09G2320/0606 , G09G2370/042 , H04N5/46 , H04N21/4108 , H04N21/4122 , H04N21/42638 , H04N21/4363 , H04N21/440218 , H04N21/4621 , H04N21/4854
摘要： PROBLEM TO BE SOLVED: To provide a technique for arbitrarily combining a display panel having a different kind of display device with an STB, so as to raise convenience. SOLUTION: The display panel (2) includes: a memory part (255) for storing identification information (ID information) comprising information concerning the kind of the device constituting the display panel (2) and/or the specification of the display panel; and a transmitting part (210) for transmitting the ID information stored in the memory (255) to a signal processor (1). The signal processor (1) includes a control circuit (110) for performing control to receive the ID information transmitted from the display panel (2), to determine the kind of the device of the display panel and/or the specification of the display panel on the basis of the received ID information, and to change the operation state of the signal processor in response to the determination result. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于将具有不同种类的显示装置的显示面板与STB任意组合的技术，以便提高方便性。显示面板（2）包括：存储部件（255），用于存储包括关于构成显示面板（2）的设备的种类的信息和/或显示器的规格的识别信息（ID信息）面板; 以及用于将存储在存储器（255）中的ID信息发送到信号处理器（1）的发送部分（210）。信号处理器（1）包括控制电路（110），用于执行控制以接收从显示面板（2）发送的ID信息，以确定显示面板的设备的种类和/或显示面板的规格根据接收到的ID信息，根据判断结果改变信号处理器的运行状态。版权所有（C）2005，JPO＆NCIPI

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