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    • 4. 发明授权
    • Defective pixel detection and correction apparatus using target pixel and adjacent pixel data
    • 使用目标像素和相邻像素数据的有缺陷的像素检测和校正装置
    • US07280142B2
    • 2007-10-09
    • US10256811
    • 2002-09-27
    • Keiji ToyodaYuichiro SugiokaMasaki Kariya
    • Keiji ToyodaYuichiro SugiokaMasaki Kariya
    • H04N9/64H04N3/14H04N5/335H04N9/04H04N9/083
    • H04N5/3675H04N9/045
    • A solid-state imaging apparatus includes: a defective pixel detector (8) for extracting, from a signal output by a frame-reading solid-state image pickup element (2), pixel data for a target pixel for which a determination is to be made and pixel data for peripheral pixels thereof, and for employing pixel data for a pixel, selected from among the peripheral pixels, in the same filter as the target pixel, to determine whether the target pixel is a defective pixel; and a defective pixel correction circuit (9) for employing the pixel data for the peripheral pixels to correct pixel data for the defective pixel. With this configuration, the output signal of the defective pixel can be corrected without spreading the effect produced by the defective pixel to the peripheral pixels, and a natural image can be displayed.
    • 固态成像装置包括:缺陷像素检测器(8),用于从由帧读取固态图像拾取元件(2)输出的信号中提取用于确定的目标像素的像素数据 并且为了在与周边像素中选择的像素中使用与目标像素相同的滤波器中的像素的像素数据,以确定目标像素是否是缺陷像素; 以及用于采用周边像素的像素数据来校正缺陷像素的像素数据的缺陷像素校正电路(9)。 利用这种配置,可以校正不良像素的输出信号,而不会将缺陷像素产生的效果扩展到周边像素,并且可以显示自然图像。
    • 5. 发明授权
    • Video signal processing apparatus
    • 视频信号处理装置
    • US06882363B1
    • 2005-04-19
    • US09492289
    • 2000-01-27
    • Kazuo OdaMasaki Kariya
    • Kazuo OdaMasaki Kariya
    • H04N5/21H04N5/235H04N5/238H04N5/243H04N5/335H04N5/351H04N5/353H04N5/355H04N5/357H04N5/369H04N5/372H04N5/374H04N5/378H04N9/73H04N5/20H04N5/213H04N5/222
    • H04N5/2357H04N5/235H04N5/243
    • An automatic gain controlling circuit controls a gain of a video signal from an imager having an electronic shutter function according to a gain control signal. An average detecting circuit detects an average level of a luminance signal of the video signal. An automatic exposure controlling circuit generates the gain control signal according to the luminance average level in response to a mode signal indicative of the cycles per second of the ac line and generates a timing signal corresponding to the ac line and a shutter speed control signal together with electronic shutter control signal generation circuit at a unit of the voltage variation cycle of the ac line according to the luminance average level such that a shutter interval of the imager is changed stepwise and each of the shutter intervals is an integer times the voltage variation cycle of the ac line. The automatic exposure controlling range is expanded by changing the shutter speed stepwise from {fraction (1/100)} sec, {fraction (2/100)} sec {fraction (3/100)} sec at 50-Hz-ac area, for example, to provide coarse exposure controlling and fine automatic gain controlling is provided every shutter interval to suppress flicker.
    • 自动增益控制电路根据增益控制信号控制来自具有电子快门功能的成像器的视频信号的增益。 平均检测电路检测视频信号的亮度信号的平均电平。 自动曝光控制电路响应于表示交流线路每秒周期的模式信号,根据亮度平均电平生成增益控制信号,并产生对应于交流线的定时信号和快门速度控制信号以及 电子快门控制信号发生电路,根据亮度平均水平以交流线路的电压变化周期为单位使得成像器的快门间隔逐步变化,并且每个快门间隔是电压变化周期的整数倍 交流线。 通过从{分数(1/100秒,{分数(2/100秒(分数(例如在50Hz-ac面积的3/100秒),以提供粗略的方式逐渐改变快门速度来扩大自动曝光控制范围 每个快门间隔提供曝光控制和精细自动增益控制,以抑制闪烁。
    • 6. 发明授权
    • Color image pickup apparatus for progressive scanning video signal
    • 用于逐行扫描视频信号的彩色图像拾取装置
    • US06271881B1
    • 2001-08-07
    • US09066783
    • 1998-04-27
    • Yuichirou TakahashiAtsuto KanazawaMasaki KariyaMasayuki SerizawaKenji TamuraKikuo KobayashiMasaaki NakayamaHiromichi Tanaka
    • Yuichirou TakahashiAtsuto KanazawaMasaki KariyaMasayuki SerizawaKenji TamuraKikuo KobayashiMasaaki NakayamaHiromichi Tanaka
    • H04N314
    • H04N9/045
    • A color image pickup apparatus includes a photo-to-electric conversion section subjected to progressive scanning. A first delay circuit defers an output signal of the photo-to-electric conversion section. A first adder combines the output signal of the photo-to-electric conversion section and an output signal of the first delay circuit. A second delay circuit defers the output signal of the first delay circuit. A second adder combines the output signal of the photo-to-electric conversion section and an output signal of the second delay circuit. A third delay circuit defers an output signal of the first adder. A first subtracter implements subtraction between the output signal of the first adder and an output signal of the third delay circuit. A fourth delay circuit defers an output signal of the second adder. A second subtracter implements subtraction between the output signal of the second adder and an output signal of the fourth delay circuit. A first sign change circuit inverts a sign of an output signal of the first subtracter. A first selector periodically and alternately selects one of the output signal of the first subtracter and an output signal of the first sign change circuit. A second sign change circuit inverts a sign of an output signal of the second subtracter. A second selector periodically and alternately selects one of the output signal of the second subtracter and an output signal of the second sign change circuit. Two different color-difference signals are generated in response to an output signal of the first selector and an output signal of the second selector.
    • 彩色图像拾取装置包括经过逐行扫描的光电转换部分。 第一延迟电路延迟光电转换部分的输出信号。 第一加法器组合光电转换部分的输出信号和第一延迟电路的输出信号。 第二延迟电路延迟第一延迟电路的输出信号。 第二加法器组合光电转换部分的输出信号和第二延迟电路的输出信号。 第三延迟电路延迟第一加法器的输出信号。 第一减法器在第一加法器的输出信号和第三延迟电路的输出信号之间进行减法。 第四延迟电路延迟第二加法器的输出信号。 第二减法器在第二加法器的输出信号和第四延迟电路的输出信号之间进行减法。 第一符号改变电路反转第一减法器的输出信号的符号。 第一选择器周期性地交替地选择第一减法器的输出信号和第一符号改变电路的输出信号之一。 第二符号改变电路反转第二减法器的输出信号的符号。 第二选择器周期性地交替地选择第二减法器的输出信号和第二符号改变电路的输出信号之一。 响应于第一选择器的输出信号和第二选择器的输出信号产生两个不同的色差信号。