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    • 118. 发明授权
    • Signal processing apparatus for use with a single chip solid-state color
camera
    • 用于单芯片固态彩色相机的信号处理装置
    • US4884129A
    • 1989-11-28
    • US171714
    • 1988-03-22
    • Naoki OzawaToshiyuki AkiyamaKenji TakahashiItaru MimuraTakahiro Nakano
    • Naoki OzawaToshiyuki AkiyamaKenji TakahashiItaru MimuraTakahiro Nakano
    • H04N9/07H04N9/04H04N9/64
    • H04N9/045H04N9/646
    • A signal processing apparatus for use with an imaging device having an image signal output circuit inherently generating noise in operation so that noise may be superposed on the image signal. The apparatus comprises a noise suppressor having a sampling and holding circuit for producing noise-suppressed pixel signals carrying different color information to contribute to suppression of noise superposed on the image signal and at the same time to demodulation of chroma signals representative of color components of an image and adders for producing a sum of and a difference between the noise-suppressed pixel signals to thereby produce a luminance signal and chroma signals for an image. The apparatus may further comprise a gain control circuits interposed between the sampling and holding circuit and the difference producing adder so that the amplitudes of the noise-suppressed pixel signals are leveled to improve the color purity of an image reproduced from the image signal.
    • 一种用于具有图像信号输出电路的成像装置的信号处理装置,所述图像信号输出电路在操作中固有地产生噪声,使得噪声可以叠加在图像信号上。 该装置包括具有采样和保持电路的噪声抑制器,用于产生携带不同颜色信息的噪声抑制像素信号,以有助于抑制叠加在图像信号上的噪声,并且同时解调代表色差信号的色度信号 图像和加法器,用于产生噪声抑制像素信号之和的差和差,从而产生用于图像的亮度信号和色度信号。 该装置还可以包括插入在采样和保持电路和差产生加法器之间的增益控制电路,使得抑制噪声的像素信号的幅度被调平以提高从图像信号再现的图像的色纯度。