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1. 发明授权

US5103298A Error correction method and circuit for nonlinear quantization circuit 失效
标题翻译：非线性量化电路的误差校正方法和电路
公开(公告)号：US5103298A
公开(公告)日：1992-04-07
申请号：US579603
申请日：1990-09-07
申请人： Naoki Kashimura , Jun Hattori , Eiji Nakamura
发明人： Naoki Kashimura , Jun Hattori , Eiji Nakamura
IPC分类号： H04N1/407 , H03M1/10 , H04N9/64 , H04N9/69
CPC分类号： H04N9/69 , H04N9/646
摘要： An error correction method and circuit for a nonlinear quantization circuit comparing a test signal which is produced from an error correction table by applying an analog reference signal into a nonlinear circuit with reference data that is defined as an output of the error correction table when the nonlinear circuit has no error, and updating the error correction table by the test signal and the reference data when they disagree. The output of the nonlinear circuit is corrected by using the error correction table. The technique is particularly suitable for nonlinear conversion performed by a gamma correction circuit of a color television camera.
摘要翻译：一种用于非线性量化电路的纠错方法和电路，其比较由误差校正表产生的测试信号，该测试信号通过将模拟参考信号施加到非线性电路中，其参考数据被定义为纠错表的输出，电路没有错误，并且当它们不同意时，通过测试信号和参考数据更新错误校正表。通过使用误差校正表来校正非线性电路的输出。该技术特别适用于由彩色电视摄像机的伽马校正电路执行的非线性转换。

2. 发明授权

US5274756A Outline compensation circuit 失效
标题翻译：外形补偿电路
公开(公告)号：US5274756A
公开(公告)日：1993-12-28
申请号：US19819
申请日：1993-02-18
申请人： Naoki Kashimura , Takamitsu Sakai
发明人： Naoki Kashimura , Takamitsu Sakai
IPC分类号： H04N5/208 , G06F15/20
CPC分类号： H04N5/208
摘要： An outline compensation circuit comprising: a first coefficient multiplier for reducing a level of an image signal by one half and reversing the polarity thereof; a first delay circuit for delaying by 2.tau. the signal from the first coefficient multiplier; a first adder for adding the signal from the first delay circuit to the image signal; a second delay circuit for delaying the signal from the first adder by 2.tau.; a second adder for adding the signal delayed by the second delay circuit to the signal from the first coefficient multiplier to output a second-order differential signal of the image signal; a first non-linear converter for calculating the square root of the second-order differential signal from the second adder; a subtractor for subtracting the signal from the first delay circuit from the signal from the first coefficient multiplier to output a first-order differential signal of the image signal; an absolute value calculating circuit for calculating the absolute value of the first-order differential signal from the subtractor; a third delay circuit for delaying the signal from the absolute value calculating circuit by .tau.; a second non-linear converter for calculating the square root of the signal from the third delay circuit; and a multiplier for multiplying the signal from the second non-linear converter with the signal from the non-linear converter to output an outline compensation signal, whereby outline compensation can be carried out naturally.
摘要翻译：一种轮廓补偿电路，包括：第一系数乘法器，用于将图像信号的电平降低一半并反转其极性; 用于将来自第一系数乘数的信号延迟2T的第一延迟电路; 第一加法器，用于将来自第一延迟电路的信号与图像信号相加; 用于将来自第一加法器的信号延迟2T的第二延迟电路; 第二加法器，用于将由第二延迟电路延迟的信号与来自第一系数乘法器的信号相加，以输出图像信号的二阶差分信号; 第一非线性转换器，用于计算来自第二加法器的二阶差分信号的平方根; 减法器，用于从来自第一系数乘法器的信号中减去来自第一延迟电路的信号，以输出图像信号的一阶差分信号; 绝对值计算电路，用于计算来自减法器的一阶差分信号的绝对值; 用于将来自绝对值计算电路的信号延迟τ的第三延迟电路; 第二非线性转换器，用于计算来自第三延迟电路的信号的平方根; 以及乘法器，用于将来自第二非线性转换器的信号与来自非线性转换器的信号相乘以输出轮廓补偿信号，从而可以自然地执行轮廓补偿。

3. 发明授权

US5157481A Registration and contour correction circuit and method for solid-state camera 失效
标题翻译：固态摄像机的注册和轮廓修正电路及方法
公开(公告)号：US5157481A
公开(公告)日：1992-10-20
申请号：US810360
申请日：1991-12-18
申请人： Naoki Kashimura , Kazuhiro Ban , Jun Hattori , Yoshiro Aoyagi
发明人： Naoki Kashimura , Kazuhiro Ban , Jun Hattori , Yoshiro Aoyagi
IPC分类号： H04N9/093 , H04N9/64
CPC分类号： H04N9/646 , H04N9/093
摘要： A registration correction circuit for a solid-state camera having a plurality of solid-state image pickup elements. One of the color video signals produced from the image pickup elements is selected as a reference signal, and pixel data of the color video signals other than the reference signal are electronically moved so that the pixel data of all the color video signals will agree in their positions. Movement of pixels is carried out by using coordinate transformation and interpolation technique: the coordinate transformation is used to shift the pixels by a multiple of 1-pixel pitch; and the interpolation is used to shift the pixels by less than 1-pixel pitch. The spatial frequency components reduced by the interpolation calculations are adaptively enhanced for each pixel in real time.

4. 发明授权

US5731845A Method and apparatus for correcting contour of color image signal 失效
标题翻译：用于校正彩色图像信号轮廓的方法和装置
公开(公告)号：US5731845A
公开(公告)日：1998-03-24
申请号：US639448
申请日：1996-04-29
申请人： Naoki Kashimura
发明人： Naoki Kashimura
IPC分类号： H04N5/208 , H04N9/64 , H04N9/68 , H04N9/66 , H04N5/21 , H04N9/77 , H04N9/78
CPC分类号： H04N9/646
摘要： A two-dimensional contour enhancement is performed along a plurality of lines on a two-dimensional frequency characteristic chart, the line intersecting with each other at middle points between successive color cross generating regions and not passing through an origin. Then, the contour enhancement can be carried out in a frequency region of 3-4 MHz in which a visual effect of contour enhancement appears most effective, while the enhancement in the cross color generating regions can be suppressed.
摘要翻译：在二维频率特性图上沿着多条线执行二维轮廓增强，该线在相继的色彩交叉生成区域之间的中间点处彼此相交并且不通过原点。然后，可以在3-4MHz的频率区域中进行轮廓增强，其中轮廓增强的视觉效果最有效，而可以抑制交叉色发生区域的增强。

5. 发明授权

US5406329A Solid state image pickup apparatus having test signal generator 失效
标题翻译：具有测试信号发生器的固态摄像装置
公开(公告)号：US5406329A
公开(公告)日：1995-04-11
申请号：US98273
申请日：1993-08-02
申请人： Naoki Kashimura , Kazuhiro Kawamura
发明人： Naoki Kashimura , Kazuhiro Kawamura
IPC分类号： H03M1/12 , H04N5/217 , H04N5/335 , H04N5/365 , H04N5/378 , H04N9/093 , H04N17/00
CPC分类号： H04N5/3653 , H03M1/12 , H04N17/002 , H04N5/378 , H04N9/093
摘要： A solid state image pickup apparatus includes a solid state image pickup device for receiving an optical image of an object and generating an electrical image signal representing the optical image of the object in synchronism with a driving pulse from a driving circuit. A sampling circuit generates a sampled image signal by sampling the electrical image signal read out of the solid state image pickup device with a first sampling pulse from a first pulse circuit synchronized with the driving pulse. An analog-to-digital convertor converts the sampled image signal to a digital image signal with a second sampling pulse from a second pulse circuit. A test signal generator generates a test signal which is synchronized with the driving pulse and alternately changes in level between consecutive pixels. A controller controls the phase of the first sampling pulse and the phase of the second sampling pulse relative to each other by processing the test signal.
摘要翻译： PCT No.PCT / JP93 / 00007 Sec。 371日期：1993年8月2日 102（e）日期1993年8月2日PCT提交1993年1月7日PCT公布。公开号WO93 / 14602 日期：1993年7月22日。固态图像拾取装置包括：固态图像拾取装置，用于接收对象的光学图像，并且与来自驱动的驱动脉冲同步地产生表示对象的光学图像的电图像信号电路。采样电路通过利用与驱动脉冲同步的第一脉冲电路的第一采样脉冲对从固态摄像装置读出的电图像信号进行采样来生成采样图像信号。模拟 - 数字转换器将来自第二脉冲电路的采样图像信号转换成具有第二采样脉冲的数字图像信号。测试信号发生器产生与驱动脉冲同步的测试信号，并且在连续像素之间交替地改变电平。控制器通过处理测试信号来相对于彼此控制第一采样脉冲的相位和第二采样脉冲的相位。

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