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21. 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.

22. 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.

23. 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。

24. 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。

25. 发明授权

US06903781B2 Video signal processing apparatus 有权
标题翻译：视频信号处理装置
公开(公告)号：US06903781B2
公开(公告)日：2005-06-07
申请号：US10184053
申请日：2002-06-28
申请人： Satoru Tanigawa , Atsuhisa Kageyama , Ryuichi Shibutani
发明人： Satoru Tanigawa , Atsuhisa Kageyama , Ryuichi Shibutani
IPC分类号： H04N5/265 , G09G5/00 , H04N5/45 , H04N9/64 , H04N9/67 , H04N9/74 , H04N9/78 , H04N5/445
CPC分类号： H04N5/45 , H04N9/641 , H04N21/426 , H04N21/4316 , H04N21/440263
摘要： A video signal processing apparatus comprises a sub-screen processing integrated circuit for subjecting a sub-screen video signal to scale-down processing to reduce its display region and output the sub-screen video signal, and a main-screen processing integrated circuit comprising: a switching circuit for receiving a main-screen video signal and the scaled-down sub-screen video signal which is outputted from the sub-screen processing integrated circuit, and selecting the main-screen video signal for a main-screen display region while selecting the sub-screen video signal for a sub-screen display region; an A/D conversion circuit for converting the video signal outputted from the switching circuit into a digital video signal; a digital signal processing circuit for digitally processing the digital video signal outputted from the A/D conversion circuit; and a D/A conversion circuit for converting the digitally-processed video signal into an analog video signal. Therefore, the main-screen video signal and the sub-screen video signal can be combined so that these signals are displayed on a single screen, and the circuit scale of the video signal processing apparatus can be minimized.
摘要翻译：视频信号处理装置包括：子屏幕处理集成电路，用于对子屏幕视频信号进行缩小处理以减小其显示区域并输出子屏幕视频信号;以及主屏幕处理集成电路，包括：用于接收主屏幕视频信号的切换电路和从子画面处理集成电路输出的按比例缩小的子画面视频信号，并且在选择主画面显示区域的同时选择主屏幕视频信号用于子屏幕显示区域的子屏幕视频信号; A / D转换电路，用于将从开关电路输出的视频信号转换为数字视频信号; 数字信号处理电路，用于数字处理从A / D转换电路输出的数字视频信号; 以及用于将数字处理的视频信号转换为模拟视频信号的D / A转换电路。因此，可以组合主屏幕视频信号和子屏幕视频信号，使得这些信号被显示在单个屏幕上，并且可以使视频信号处理设备的电路规模最小化。

26. 发明授权

US06545725B1 Apparatus for identifying standard and non-standard video signals 有权
标题翻译：用于识别标准和非标准视频信号的装置
公开(公告)号：US06545725B1
公开(公告)日：2003-04-08
申请号：US09553153
申请日：2000-04-20
申请人： Nobuko Fujita , Atsuhisa Kageyama
发明人： Nobuko Fujita , Atsuhisa Kageyama
IPC分类号： H04N514
CPC分类号： H04N9/642
摘要： In order that such a signal as is conventionally determined to be a standard signal in the unit of one field and determined to be a non-standard signal in the unit of a plurality of fields can be determined to be a non-standard signal, the following are provided: a clock generating circuit for generating a clock of a frequency being a constant multiple of the color carrier frequency; a register for setting the clock count of one field section of a standard signal; a vertical counter for counting the number of clocks generated by the clock generating circuit, and being reset when the clock count reaches the value of the register; and a flip-flop receiving the counter output as the input and using an external vertical synchronizing signal as a load hold pulse. Consequently, the output of the flip-flop represents the inter-field shift of the clock count represented by the external vertical synchronizing signal from the standard signal which shift is accumulated over a plurality of fields, so that even such a signal as is conventionally determined to be a standard signal in the unit of one field and determined to be a non-standard signal in the unit of a plurality of fields can be determined to be a non-standard signal.
摘要翻译：为了将通常被确定为以一个场为单位的标准信号并且被确定为以多个场为单位的非标准信号的信号可以被确定为非标准信号，以下提供：时钟发生电路，用于产生频率为彩色载波频率的常数倍的时钟; 用于设置标准信号的一个场部分的时钟计数的寄存器; 用于计数由时钟发生电路产生的时钟数的垂直计数器，并且当时钟计数达到寄存器的值时被复位; 以及触发器，接收计数器输出作为输入，并使用外部垂直同步信号作为负载保持脉冲。因此，触发器的输出表示由来自标准信号的外部垂直同步信号表示的时钟计数的场间位移，该偏移在多个场上被累积，使得即使是常规确定的信号作为一个场的单位的标准信号，被确定为以多个场为单位的非标准信号可以被确定为非标准信号。

27. 发明授权

US6038341A Histogram operating unit for video signals 失效
标题翻译：用于视频信号的直方图操作单元
公开(公告)号：US6038341A
公开(公告)日：2000-03-14
申请号：US34857
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： H04N5/20 , G06T5/40
CPC分类号： H04N5/20
摘要： A histogram operating unit comprises: histogram generator which receives input video signals, and creates a histogram of input video signals, a first limiter for receiving a histogram generated by the histogram generator and an externally set first limit level, and restricting the frequency of the histogram created by the histogram generator to within a specified level, and outputting a restricted histogram, a first totaling circuit for calculating the number of samples of video signals produced by the first limiter, second totaling circuit for calculating the number of samples of the input video signals, a first subtractor for subtracting the output of the first totaling circuit from the output of the second totaling circuit, and a corrected histogram generator which receives the output of the first limiter and the output of the first subtractor, and creates the corrected histogram.
摘要翻译：直方图操作单元包括：直方图生成器，其接收输入视频信号，并创建输入视频信号的直方图;第一限幅器，用于接收由直方图发生器产生的直方图和外部设定的第一极限电平，并限制直方图的频率由直方图生成器创建到规定级别，并且输出受限直方图;第一合计电路，用于计算由第一限幅器产生的视频信号的采样数;第二合计电路，用于计算输入视频信号的样本数; 第一减法器，用于从第二合计电路的输出中减去第一合计电路的输出;以及校正直方图发生器，其接收第一限幅器的输出和第一减法器的输出，并产生校正后的直方图。

28. 发明授权

US5920351A Black level detecting circuit of video signal 失效
标题翻译：视频信号的黑电平检测电路
公开(公告)号：US5920351A
公开(公告)日：1999-07-06
申请号：US34020
申请日：1998-03-02
申请人： Masahiro Takeshima , Atsuhisa Kageyama
发明人： Masahiro Takeshima , Atsuhisa Kageyama
IPC分类号： H04N17/00 , H04N5/16 , H04N5/20 , H04N5/68
CPC分类号： H04N5/20 , H04N5/16
摘要： A black level detecting circuit compares an input video signal with a current minimum value of input video signals, then detects a difference between the input signal and the current minimum value when the input value is smaller than the current minimum value, and then outputs the detected difference only during a detecting period of the black level, then corrects the minimum value by using this output for renewing the current minimum value, and finally outputs this renewed minimum value as a new minimum value of the input video signal. The black level detecting circuit also latches the minimum value during the vertical blanking pulse and initializes the minimum value during a vertical blanking period so as to detect a black level of the input signal. As such, the black level detecting circuit measures the black level only during a video period, thereby reducing detection errors due to noises, and also an automatic initialization of the minimum value during a blanking period can contribute to a more stable detection of the black level. The black level detected can be used effectively as a control signal over picture quality for each field or each frame.
摘要翻译：黑电平检测电路将输入视频信号与输入视频信号的当前最小值进行比较，然后当输入值小于当前最小值时检测输入信号与当前最小值之间的差值，然后输出检测到的仅在黑电平的检测期间进行差分，然后通过使用该输出来更新当前最小值来校正最小值，并且最终将该更新的最小值作为输入视频信号的新的最小值输出。黑电平检测电路还在垂直消隐脉冲期间锁存最小值，并在垂直消隐期间初始化最小值，以便检测输入信号的黑电平。因此，黑电平检测电路仅在视频期间测量黑电平，从而减少由于噪声引起的检测误差，并且在消隐期间的最小值的自动初始化可以有助于更稳定地检测黑电平。检测到的黑电平可以有效地用作每个场或每个帧的图像质量的控制信号。

29. 发明授权

US5396300A Contrast correction device for correcting video signal contrast by varying luminance signal 失效
标题翻译：对比度校正装置，用于通过改变亮度信号来校正视频信号对比度
公开(公告)号：US5396300A
公开(公告)日：1995-03-07
申请号：US43994
申请日：1993-04-07
申请人： Atsuhisa Kageyama
发明人： Atsuhisa Kageyama
IPC分类号： H04N5/20 , H04N5/57
CPC分类号： H04N5/68 , H04N5/20 , H04N5/57
摘要： A contrast correction device for correcting a contrast of an image formed by video signals includes a brightness/darkness detecting circuit for detecting a tone level of the image and for producing a bright signal when the tone level is greater than a predetermined brightness, and a dark signal when the tone level is less than a predetermined darkness. A correction circuit is provided for correcting a luminance signal by a negative gamma correction in response to the bright signal, and a positive gamma correction in response to the dark signal. Thus, the contrast of bright areas in the image are enhanced when the bright signal is produced, and the contrast of bright areas in the image are suppressed when the dark signal is produced.
摘要翻译：用于校正由视频信号形成的图像的对比度的对比度校正装置包括：亮度/黑度检测电路，用于检测图像的音调电平，并且当音调电平大于预定亮度时产生亮信号;以及黑暗当音调级别小于预定的黑暗时发出信号。提供了一种校正电路，用于响应于亮信号通过负伽马校正校正亮度信号，以及响应于暗信号进行正伽马校正。因此，当产生亮信号时，图像中亮区的对比度增强，并且当产生暗信号时，图像中亮区的对比度被抑制。

30. 发明授权

US5289282A Video signal gradation corrector 失效
标题翻译：视频信号灰度校正器
公开(公告)号：US5289282A
公开(公告)日：1994-02-22
申请号：US886801
申请日：1992-05-22
申请人： Toshiaki Tsuji , Atsuhisa Kageyama , Kiyoshi Imai
发明人： Toshiaki Tsuji , Atsuhisa Kageyama , Kiyoshi Imai
IPC分类号： G06T5/40 , H04N5/20 , H04N5/14
CPC分类号： G06T5/009 , G06T5/40 , H04N5/20
摘要： A video signal gradation corrector used in a television receiver or the like for preventing the destruction of the gradation of the black side and the floating of the luminance level of the black side and/or an excessive increase of the luminance level of the white side. The corrector can be realized with a small circuit scale. A histogram operating circuit includes an average luminance level detecting circuit. A constant is subtracted from an output signal of the average luminance level detecting circuit by a subtracter. The result of subtraction is multiplied by a constant by a constant-multiplication circuit. A lower-limit limiter circuit limits an output signal of the constant-multiplication circuit to a signal having a value not smaller than 0. An output signal of the lower-limit limiter circuit is provided as an accumulation start luminance level, thereby enabling a gradation correction in which the floating of the luminance level of the black side and the destruction of the gradation of the black side are prevented.
摘要翻译：在电视接收机等中使用的视频信号灰度校正器，用于防止黑色侧的灰度的破坏和黑色的亮度级的漂移和/或白色的亮度级的过度增加。校正器可以用小电路规模实现。直方图运算电路包括平均亮度电平检测电路。通过减法器从平均亮度电平检测电路的输出信号中减去常数。减法的结果乘以恒常乘法电路的常数。下限限制器电路将恒倍数电路的输出信号限制为不小于0的信号。下限限制器电路的输出信号被提供为累积开始亮度电平，从而使得能够进行等级防止了黑色的亮度水平的浮动和黑色的灰度的破坏的校正。

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