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1.发明申请公开(公告)号：US20070216815A1
公开(公告)日：2007-09-20
申请号：US11587204
申请日：2005-04-20
申请人： Hisao Kunitani , Satoru Tanigawa , Takashi Koizumi
发明人： Hisao Kunitani , Satoru Tanigawa , Takashi Koizumi
IPC分类号： H04N9/78
CPC分类号： G09G5/10 , G09G2360/16 , H04N5/08 , H04N5/14 , H04N5/20
摘要： [PROBLEMS]To improve accuracy of determining the average brightness level and maximum and minimum levels of the brightness signals for the entire screen. [MEANS FOR SOLVING THE PROBLEMS]There are included a differential operation circuit that detects and differentiates rise or breaking edges in horizontal and vertical synchronous signals of an input image signal, thereby outputting horizontal and vertical differential signals synchronized with the horizontal and vertical synchronous signals, respectively; a sample window circuit that detects the beginning and ending positions of horizontal and vertical intervals to produce sample window signals established in any desired vertical and horizontal positions on the screen in accordance with the horizontal and vertical differential signals; and a brightness signal output circuit that outputs sampled brightness signals when the sample window circuit is operative.
摘要翻译： [问题]提高确定整个屏幕的亮度信号的平均亮度级别和最大和最小级别的精度。 解决问题的手段包括：差分运算电路，其检测和区分输入图像信号的水平和垂直同步信号中的上升沿或断裂边缘，从而输出与水平和垂直同步信号同步的水平和垂直差分信号， 分别; 样本窗口电路，其检测水平和垂直间隔的开始和结束位置，以根据水平和垂直差分信号产生在屏幕上的任何期望的垂直和水平位置中建立的样本窗口信号; 以及亮度信号输出电路，其在采样窗电路工作时输出采样的亮度信号。
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公开(公告)号：US07684649B2
公开(公告)日：2010-03-23
申请号：US11587204
申请日：2005-04-20
申请人： Hisao Kunitani , Satoru Tanigawa , Takashi Koizumi
发明人： Hisao Kunitani , Satoru Tanigawa , Takashi Koizumi
IPC分类号： G06K9/32
CPC分类号： G09G5/10 , G09G2360/16 , H04N5/08 , H04N5/14 , H04N5/20
摘要： To improve accuracy of determining the average brightness level and maximum and minimum levels of the brightness signals for the entire screen.There are included a differential operation circuit that detects and differentiates rise or breaking edges in horizontal and vertical synchronous signals of an input image signal, thereby outputting horizontal and vertical differential signals synchronized with the horizontal and vertical synchronous signals, respectively; a sample window circuit that detects the beginning and ending positions of horizontal and vertical intervals to produce sample window signals established in any desired vertical and horizontal positions on the screen in accordance with the horizontal and vertical differential signals; and a brightness signal output circuit that outputs sampled brightness signals when the sample window circuit is operative.
摘要翻译： 提高确定整个屏幕的亮度信号的平均亮度级别和最大和最小级别的精度。 包括差分运算电路，其检测和区分输入图像信号的水平和垂直同步信号中的上升沿或断裂边缘，从而分别输出与水平和垂直同步信号同步的水平和垂直差分信号; 样本窗口电路，其检测水平和垂直间隔的开始和结束位置，以根据水平和垂直差分信号产生在屏幕上的任何期望的垂直和水平位置中建立的样本窗口信号; 以及亮度信号输出电路，其在采样窗电路工作时输出采样的亮度信号。
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公开(公告)号：US20060146891A1
公开(公告)日：2006-07-06
申请号：US10541678
申请日：2004-11-19
IPC分类号： H04J3/06
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 stepwisely 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. According to the semiconductor device of the present invention, 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，但是通过逐步移动延迟单元，使其在最大N + 1 / M个时钟（N：不小于2的整数）上改变，以使之前的参考的相位状态 信号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。 根据本发明的半导体器件，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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公开(公告)号：US07259599B2
公开(公告)日：2007-08-21
申请号：US10541678
申请日：2004-11-19
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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公开(公告)号：US20080158033A1
公开(公告)日：2008-07-03
申请号：US11965279
申请日：2007-12-27
申请人： Yasuyuki Doi , Makoto Hattori , Hisao Kunitani , Atsuhisa Kageyama , Tetsuro Oomori , Osamu Sarai , Tooru Suyama , Kurumi Nakayama , Kazuya Matsumoto
发明人： Yasuyuki Doi , Makoto Hattori , Hisao Kunitani , Atsuhisa Kageyama , Tetsuro Oomori , Osamu Sarai , Tooru Suyama , Kurumi Nakayama , Kazuya Matsumoto
IPC分类号： G09G3/36
CPC分类号： G09G3/3685 , G09G3/2059 , G09G3/3696 , G09G2310/027 , G09G2340/0428
摘要： A driving device for driving an image display system, which sequentially receives input image data corresponding to gradation of each pixel of a display image and outputs a driving voltage signal includes: an operation section for obtaining output image data of which a bit number is smaller than a bit number of the input image data based on input image data of a target pixel to be processed and input image data of a pixel in vicinity of the target pixel; a reference voltage generation section for generating a plurality of reference voltages of different levels; and a reference voltage selection section for selecting one of the plurality of reference voltages. The operation section is configured to obtain output image data of the target pixel so that a difference between the input image data and output image data of the target pixel and a difference between the input image data and output image data of the pixel in vicinity of the target pixel cancel out each other.
摘要翻译： 一种用于驱动图像显示系统的驱动装置，其顺序地接收与显示图像的每个像素的灰度对应的输入图像数据并输出驱动电压信号，包括：操作部，用于获得位数小于 基于要处理的目标像素的输入图像数据的输入图像数据的位数，并输入目标像素附近的像素的图像数据; 用于产生不同电平的多个参考电压的参考电压产生部分; 以及用于选择多个参考电压中的一个的参考电压选择部分。 操作部被配置为获得目标像素的输出图像数据，使得输入图像数据和目标像素的输出图像数据之间的差异以及输入图像数据与输入图像数据之间的像素的输出图像数据之间的差异 目标像素相互抵消。
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公开(公告)号：US20080151080A1
公开(公告)日：2008-06-26
申请号：US11963178
申请日：2007-12-21
申请人： Naoto Osaka , Hisao Kunitani , Tatuo Itoman
发明人： Naoto Osaka , Hisao Kunitani , Tatuo Itoman
IPC分类号： H04N5/217
CPC分类号： G06T5/002 , G06T2207/10016 , G06T2207/20012 , G06T2207/20192
摘要： A noise shaping processing part performs noise shaping processing on pixel data. An adding circuit performs accumulative adding processing on the noise-shaped pixel data. A first bit-shift part performs bit-shift processing on the accumulatively-added and noise-shaped pixel data. A second bit-shift part performs bit-shift processing on unprocessed pixel data. An inter-pixel subtracting circuit calculates a gradation level difference between neighboring current pixel and previous pixel in a horizontal direction in the unprocessed pixel data. A boundary judging circuit judges presence of a boundary between a low-gradation area and a high-gradation area in the horizontal direction of the unprocessed pixel data, based on a comparison between the gradation level difference and a prescribed threshold value. A selecting circuit selects an output of the first bit-shift part when the boundary judging circuit judges there is no boundary, and selects an output of the second bit-shift part when judged there is a boundary.
摘要翻译： 噪声整形处理部对像素数据进行噪声整形处理。 加法电路对噪声形状的像素数据进行累加处理。 第一位移部分对累加和噪声形状的像素数据进行位移处理。 第二位移部件对未处理的像素数据执行位移处理。 像素间减法电路计算未处理像素数据中的相邻的当前像素与水平方向上的前一像素之间的灰度级差。 边界判断电路基于灰度级差与规定的阈值之间的比较来判断未处理像素数据的水平方向上的低灰度区域和高灰度区域之间的边界的存在。 当边界判断电路判断没有边界时，选择电路选择第一位移部分的输出，并且当判断有边界时选择第二位移部分的输出。
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公开(公告)号：US20070194814A1
公开(公告)日：2007-08-23
申请号：US11652140
申请日：2007-01-11
申请人： Tetsuro Oomori , Hisao Kunitani , Hiroshi Kojima , Makoto Mizuki , Noriko Kaku
发明人： Tetsuro Oomori , Hisao Kunitani , Hiroshi Kojima , Makoto Mizuki , Noriko Kaku
CPC分类号： G09G3/3283
摘要： The current drive device of the present invention includes: a current source transistor for allowing a preset drive current to flow to a drain; a cascode transistor cascode-connected to the current source transistor; a switch circuit for switching ON/OFF flow of the drive current through the drain of the cascode transistor and a circuit to be driven; and a bypass circuit for allowing the drive current to flow therethrough to bypass the switch circuit and the circuit to be driven when the switch circuit is OFF.
摘要翻译： 本发明的电流驱动装置包括：用于允许预设驱动电流流到漏极的电流源晶体管; 共模共轭共栅型连接到电流源晶体管的共源共栅晶体管; 用于切换驱动电流的通/断流通过共源共栅晶体管的漏极和被驱动的电路的开关电路; 以及旁路电路，用于当开关电路断开时允许驱动电流流过其旁路开关电路和待驱动的电路。
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公开(公告)号：US06965417B2
公开(公告)日：2005-11-15
申请号：US10169555
申请日：2001-01-12
CPC分类号： H04N5/57 , G09G5/10 , G09G2320/0606 , G09G2320/0626
摘要： An object of the present invention is to provide a signal processor which improves the offset accuracy of a video signal without increasing the number of bits of a circuit.An N-bit adder (103) adds a video signal (S101) and an upper-N-bit signal of a brightness control signal (S102) as an offset value. A 1-bit pulse generator (107) generates a 1-bit pulse signal (S107) in which “1” and “0” have equal chances of appearing at random. A selector (106) selects the 1-bit pulse signal (S107) when the LSB of the brightness control signal (S102) is “1”, while selects a ground level “0” when the LSB is “0”, and supplies the selected signal to a carry input of the N-bit adder (103).
摘要翻译： 本发明的目的是提供一种改善视频信号的偏移精度而不增加电路位数的信号处理器。 N位加法器（103）将亮度控制信号（S102）的视频信号（S101）和上N位信号作为偏移值相加。 1位脉冲发生器（107）产生1位脉冲信号（S107），其中“1”和“0”的随机出现机会相等。 当亮度控制信号（S102）的LSB为“1”时，选择器（106）选择1位脉冲信号（S107），当LSB为“0”时选择地电平“0”，而 将选择的信号提供给N位加法器（103）的进位输入。
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公开(公告)号：US06633343B2
公开(公告)日：2003-10-14
申请号：US09803660
申请日：2001-03-12
申请人： Keiichi Ito , Atsuhisa Kageyama , Nobutaka Okada , Katsuya Ishikawa , Hidetoshi Suzuki , Hisao Kunitani , Yuki Kakuya
发明人： Keiichi Ito , Atsuhisa Kageyama , Nobutaka Okada , Katsuya Ishikawa , Hidetoshi Suzuki , Hisao Kunitani , Yuki Kakuya
IPC分类号： H04N5202
CPC分类号： H04N5/202
摘要： An appropriate correction quantity is obtained for a video luminance signal on an individual video basis with a characteristic value, like the maximum or average value, of the luminance signal taken into account, thereby performing gray scale correction more effectively. A dynamic gamma correction apparatus for performing a correction on a video luminance signal includes: a correction start point control section for obtaining a correction start point, which is a lower limit of a given correction range, in accordance with a characteristic value of the luminance signal; a gamma correction quantity calculating section for obtaining a provisional correction quantity for the luminance signal to be corrected using the correction start point and the luminance signal; a gamma correction gain control section for obtaining a gain for the provisional correction quantity in accordance with the characteristic value of the luminance signal; a multiplier for obtaining a product of the provisional correction quantity and the gain as a gamma correction quantity; and an adder for obtaining a sum of the luminance signal and the gamma correction quantity and outputting the sum. The correction start point and the gain for the provisional correction quantity are controllable in accordance with the characteristic value of the luminance signal. Thus, an appropriate gamma correction quantity can be obtained as a final correction quantity.
摘要翻译： 通过考虑到亮度信号的特性值（如最大值或平均值），在单个视频基础上获得适当的校正量，从而更有效地执行灰度校正。 用于对视频亮度信号执行校正的动态伽马校正装置包括：校正开始点控制部分，用于根据亮度信号的特征值获得作为给定校正范围的下限的校正开始点 ; 伽马校正量计算部分，用于使用校正开始点和亮度信号获得要校正的亮度信号的临时校正量; 伽马校正增益控制部分，用于根据亮度信号的特征值获得临时校正量的增益; 用于获得临时校正量和增益的乘积作为伽马校正量的乘法器; 以及用于获得亮度信号和伽马校正量之和并输出该和的加法器。 校正开始点和临时校正量的增益根据亮度信号的特征值是可控的。 因此，可以获得适当的伽马校正量作为最终校正量
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公开(公告)号：US06580464B1
公开(公告)日：2003-06-17
申请号：US09721873
申请日：2000-11-27
IPC分类号： H04N973
CPC分类号： H04N9/73
摘要： The present invention provides a color difference signal correction apparatus for correcting color difference of parts having no color, particularly white characters, which can make the correction with high accuracy also for images including lightly colored parts. The color difference signal correction apparatus of the present invention comprises a full-wave rectification circuit 12 for full-wave rectifying an input color difference signal (R−Y)a, a full-wave rectification circuit 13 for full-wave rectifying an input color difference signal (B−Y)b, an addition circuit 14 for adding the outputs of the full-wave rectification circuit 12 and the full-wave rectification circuit 13, an addition circuit 4 for adding a white character slice level signal e and the output of the addition circuit 14, a luminance signal slice circuit 5 for slicing a luminance signal g with the output of the addition circuit 4, and an addition circuit 6 for adding the output of the luminance signal slice circuit 5 and the input color difference signal (B−Y)b and outputting the addition result.
摘要翻译： 本发明提供了一种色差信号校正装置，用于校正没有颜色，特别是白色字符的部分的色差，其可以对包括浅色部分的图像进行高精度的校正。 本发明的色差信号校正装置包括用于全波整流输入色差信号（RY）a的全波整流电路12，全波整流电路13，用于全波整流输入色差信号 （BY）b，用于将全波整流电路12和全波整流电路13的输出相加的加法电路14，用于将白字符限幅电平信号e和加法电路的输出相加的加法电路4 14是用于对加法电路4的输出对亮度信号g进行分片的亮度信号限制电路5，以及用于将亮度信号限幅电路5的输出和输入色差信号（BY）b相加的加法电路6和 输出加法结果。
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