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11. 发明授权

US06636229B2 Gradation correction circuit, and &ggr; correction apparatus 失效
标题翻译：梯度校正电路和伽马校正装置
公开(公告)号：US06636229B2
公开(公告)日：2003-10-21
申请号：US09801872
申请日：2001-03-09
申请人： Katsuya Ishikawa , Atsuhisa Kageyama , Keiichi Ito
发明人： Katsuya Ishikawa , Atsuhisa Kageyama , Keiichi Ito
IPC分类号： G09G502
CPC分类号： H04N5/202 , G09G3/20 , G09G2320/0673 , G09G2360/16 , H04N9/69
摘要： A gradation correction circuit comprises: an arithmetic means (101˜104, 106, 108˜110) for operating an output value corresponding to each broken point of a broken line in a vertical blanking period; a level detection circuit 107 for identifying a size relation between each broken line point which is an input value corresponding to each broken point and an input video signal, and calculating a difference between the input video signal and each broken line point; and a correction means (101˜102, 104, 107, 109˜111) for selecting a gradient of the broken line on the basis of the result identified by the level detection circuit 107, and performing gradation correction of the input video signal on the basis of the selected gradient of the broken line, the output value calculated by the arithmetic means, and the difference calculated by the level detection circuit, wherein the arithmetic means and the correction means share a number of circuits (102, 109, 110). Therefore, there is provided a gradation correction circuit where video correction with high precision can be realized without using a memory storing a lookup table, or without increasing a circuit scale.
摘要翻译：灰度校正电路包括：用于在垂直消隐期间操作对应于虚线的每个断点的输出值的算术装置（101〜104,106,108〜110）电平检测电路107，用于识别作为与每个断点相对应的输入值的每个虚线点与输入视频信号之间的尺寸关系，并计算输入视频信号和每个虚线点之间的差; 以及用于根据由电平检测电路107识别的结果来选择虚线的梯度的校正装置（101〜102,104,107,109〜111），并对输入视频信号进行灰度校正基于所选择的虚线的斜率，由算术装置计算的输出值以及由电平检测电路计算出的差值，其中算术装置和校正装置共享多个电路（102,109,110）。因此，提供了一种灰度校正电路，其中可以在不使用存储查找表的存储器的情况下实现高精度的视频校正，或者不增加电路规模。

12. 发明授权

US06252983B1 Histogram generator 失效
标题翻译：直方图生成器
公开(公告)号：US06252983B1
公开(公告)日：2001-06-26
申请号：US09034984
申请日：1998-03-04
申请人： Masahiro Takeshima , Atsuhisa Kageyama , Minoru Kawabata , Hiroko Sugimoto
发明人： Masahiro Takeshima , Atsuhisa Kageyama , Minoru Kawabata , Hiroko Sugimoto
IPC分类号： G06K900
CPC分类号： H04N17/00 , H04N5/20
摘要： A histogram generator creates a histogram to detect the characteristics of video signals. The histogram generator allows for a reduction in problems of instability caused by noise that may exist in other histogram generators. A width is allocated to thresholds used in creating the histogram, and signal values are counted after weighting those falling near a threshold.
摘要翻译：直方图生成器创建一个直方图来检测视频信号的特性。直方图发生器允许减少由其他直方图发生器中可能存在的噪声引起的不稳定性问题。将宽度分配给用于创建直方图的阈值，并且对加在阈值附近的信号进行加权后对信号值进行计数。

13. 发明授权

US5760840A Apparatus for distinguishing between a plurality of video signal types, apparatus for automatic aspect ratio determination and television receiver 失效
标题翻译：用于区分多个视频信号类型的装置，用于自动宽高比确定的装置和电视接收机
公开(公告)号：US5760840A
公开(公告)日：1998-06-02
申请号：US414710
申请日：1995-03-31
申请人： Masahiro Tani , Naoji Okumura , Atsuhisa Kageyama
发明人： Masahiro Tani , Naoji Okumura , Atsuhisa Kageyama
IPC分类号： H04N5/44 , H04N5/445 , H04N5/46 , H04N5/21
CPC分类号： H04N7/0122 , H04N5/46 , H04N21/4884
摘要： An automatic aspect ratio discrimination apparatus for detecting a picture starting position, a picture ending position and a subtitle ending position by generating three histograms segmented by two slice levels S and T at every line from a luminance signal Y at a comparison circuit and counters, judging when the line is black, a picture or a subtitle by inputting the obtained histograms to the comparison circuit, detecting lines varying from black to picture, from picture to black, and from subtitle to black at an edge detection circuit and judging if the lines varying from black to picture and from picture to black are stable in time or not at a temporal filter.
摘要翻译：一种自动宽高比判别装置，用于通过在比较电路和计数器处产生从亮度信号Y的每一行生成由两个限幅电平S和T分割的三个直方图来检测图像开始位置，图像结束位置和字幕结束位置，判断当通过将所获得的直方图输入到比较电路，线条为黑色，图片或字幕时，检测从黑色变化到图片的线条，从边缘检测电路从边缘检测电路检测到从黑色到黑色，从字幕变成黑色，并判断线条是否变化从黑色到图片，从图片到黑色在时间上都是稳定的，而不是在时间过滤器上。

14. 发明授权

US5485223A Noise reducing apparatus 失效
标题翻译：降噪装置
公开(公告)号：US5485223A
公开(公告)日：1996-01-16
申请号：US283636
申请日：1994-08-01
申请人： Kazunari Yamaguchi , Atsuhisa Kageyama
发明人： Kazunari Yamaguchi , Atsuhisa Kageyama
IPC分类号： H04N5/21 , H04N9/64
CPC分类号： H04N5/21 , H04N9/646
摘要： A noise reducing apparatus includes a delay device for delaying a first video signal by one horizontal period. Also included is a first subtracter for subtracting the output of the delay device from an input video signal and a limiter for clipping the output of the first subtracter at a designated level. A variable coefficient-multiplier is also provided for multiplying the output of the limiter by a variable coefficient k where 0
摘要翻译：降噪装置包括用于将第一视频信号延迟一个水平周期的延迟装置。还包括用于从输入视频信号中减去延迟装置的输出的第一减法器和用于在指定电平限幅第一减法器的输出的限幅器。还提供了可变系数乘法器，用于将限制器的输出乘以0

15. 发明授权

US5351141A Video signal correction system 失效
标题翻译：视频信号校正系统
公开(公告)号：US5351141A
公开(公告)日：1994-09-27
申请号：US1529
申请日：1993-01-06
申请人： Toshiaki Tsuji , Atsuhisa Kageyama
发明人： Toshiaki Tsuji , Atsuhisa Kageyama
IPC分类号： H04N5/14 , H04N5/20 , H04N9/68 , H04N9/77 , H04N9/78
CPC分类号： H04N5/20 , H04N9/68 , H04N9/77
摘要： A novel video signal correction system is disclosed, in which an average picture level detection circuit detects the average picture level (APL) of a luminance signal, and a coefficient calculation circuit calculates the amount of correction by the APL circuit. An adder adds an APL-corrected signal to a corrected luminance signal. A limiter circuit, on the other hand, limits the lower limit level of an input luminance signal. A divider circuit divides an output signal of the adder by an output signal of the limiter circuit, and the result is used to correct an input color signal. The color signal is thus capable of being corrected in accordance with the APL while at the same time preventing excessive correction of the color signal with a low brightness input.
摘要翻译：公开了一种新颖的视频信号校正系统，其中平均图像电平检测电路检测亮度信号的平均图像电平（APL），并且系数计算电路计算APL电路的校正量。加法器将APL校正的信号加到校正的亮度信号上。另一方面，限幅电路限制输入亮度信号的下限电平。分频器电路将加法器的输出信号除以限幅器电路的输出信号，结果用于校正输入的彩色信号。因此，彩色信号能够根据APL进行校正，同时防止用低亮度输入对彩色信号的过度校正。

16. 发明授权

US5255079A Apparatus for correcting a color tone of a video signal 失效
标题翻译：用于校正视频信号的色调的装置
公开(公告)号：US5255079A
公开(公告)日：1993-10-19
申请号：US707509
申请日：1991-05-30
申请人： Atsuhisa Kageyama
发明人： Atsuhisa Kageyama
IPC分类号： H04N9/64 , H04N9/68 , H04N9/77
CPC分类号： H04N9/68
摘要： A color-tone correcting apparatus includes a first device for detecting a greatest signal of first input component video signals, and outputting the detected greatest signal. A signal device serves to remove small-level components from the output signal of the first device, and to limit an amplitude of the output signal of the first device to within a predetermined amplitude. A third device serves to add an output signal of the second device and a second input component video signal.

17. 发明授权

US5200824A Luminance signal noise suppressor 失效
标题翻译：发光信号抑制器
公开(公告)号：US5200824A
公开(公告)日：1993-04-06
申请号：US731152
申请日：1991-07-15
申请人： Atsuhisa Kageyama
发明人： Atsuhisa Kageyama
IPC分类号： H04B1/10 , H04N5/208 , H04N5/21
CPC分类号： H04N5/21
摘要： A luminance signal noise suppressor for suppressing noise of a video luminance signal automatically in a television receiver or the like in response to possible large noise which is detected as a high voltage by detecting high frequency components of an input video luminance signal band, and a noise suppression circuit is enabled or the correction quantity of a contour correction circuit is decreased.

18. 发明授权

US5140649A Gradation correcting apparatus for correcting luminance signal in accordance with detected color signal 失效
标题翻译：根据检测到的颜色信号校正发光信号的等级校正装置
公开(公告)号：US5140649A
公开(公告)日：1992-08-18
申请号：US651619
申请日：1991-02-06
申请人： Atsuhisa Kageyama
发明人： Atsuhisa Kageyama
IPC分类号： H04N5/20 , H04N1/407 , H04N1/60 , H04N9/64 , H04N9/77
CPC分类号： H04N9/77 , H04N1/6027
摘要： A gradation correcting apparatus for correcting the gradation of a picture signal using histogram memories in the television image receiving machine, video tape recorder and so on. When color picture signals have been inputted, the picture portion having the particular color component is detected so as to digitially effect the gradation correcting operation in accordance with the color component.

19. 发明申请

US20100020243A1 VIDEO SIGNAL PROCESSOR 审中-公开
标题翻译：视频信号处理器
公开(公告)号：US20100020243A1
公开(公告)日：2010-01-28
申请号：US12521968
申请日：2008-09-09
申请人： Katsuyuki Kitano , Keiichi Kuzumoto , Atsuhisa Kageyama
发明人： Katsuyuki Kitano , Keiichi Kuzumoto , Atsuhisa Kageyama
IPC分类号： H04N5/16
CPC分类号： H04N5/18 , G09G5/003 , H04N5/46 , H04N21/426 , H04N21/4436
摘要： In a video signal processor (10), a video signal is given to a video input terminal (101) via a coupling capacitor (200). A clamp circuit (104) clamps the video signal input via the video input terminal (101). A format detector section (105) detects a format of the video signal. A controller section (107) changes power supply capability of the clamp circuit (104) according to a detection result of the format detector section (105).
摘要翻译：在视频信号处理器（10）中，通过耦合电容器（200）向视频输入端子（101）提供视频信号。钳位电路（104）经由视频输入端（101）钳位输入的视频信号。格式检测器部分（105）检测视频信号的格式。控制部（107）根据格式检测部（105）的检测结果来改变钳位电路（104）的供电能力。

20. 发明授权

US07259599B2 Semiconductor device 失效
标题翻译：半导体器件
公开(公告)号：US07259599B2
公开(公告)日：2007-08-21
申请号：US10541678
申请日：2004-11-19
申请人： Hisao Kunitani , Satoru Tanigawa , Hiroshi Sonobe , Atsuhisa Kageyama
发明人： Hisao Kunitani , Satoru Tanigawa , Hiroshi Sonobe , Atsuhisa Kageyama
IPC分类号： H03L7/00
CPC分类号： H03L7/07 , H03K5/13 , H03K5/1565 , H03L7/0814 , H04N5/126
摘要： In a semiconductor device of the present invention, a clock is not changed instantaneously but it is changed over maximum N+1/M clocks (N: integer not less than 2) by shifting delay cells in a step by step manner to make the phase state of a previous reference signal and the phase state of a present reference signal coincide with each other, whereby the clock is synchronized with the reference signal with accuracy, and the duty of the output clock is kept constant. With this semiconductor device, it is possible to prevent the duty of the clock from being discontinuous when a signal whose reference signal does not coincide with the clock is inputted and reset is made to a rising edge of this reference signal.
摘要翻译：在本发明的半导体器件中，时钟不瞬时变化，但是通过逐步地移动延迟单元，在最大N + 1 / M个时钟（N：不小于2的整数）上改变时钟，以使相位先前参考信号的状态和本参考信号的相位状态彼此一致，从而精确地将时钟与参考信号同步，并且输出时钟的占空比保持恒定。利用该半导体器件，当输入参考信号与时钟不一致的信号时，可以防止时钟的占空比不连续，并且复位到该参考信号的上升沿。

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