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    • 1. 发明授权
    • Color imaging device
    • 彩色成像装置
    • US4467347A
    • 1984-08-21
    • US346195
    • 1982-02-05
    • Naoki OzawaShusaku NagaharaKenji TakahashiMasuo UmemotoKazuhiro SatoMorishi IzumitaToshiyuki AkiyamaMasanori SatoKoji Kudo
    • Naoki OzawaShusaku NagaharaKenji TakahashiMasuo UmemotoKazuhiro SatoMorishi IzumitaToshiyuki AkiyamaMasanori SatoKoji Kudo
    • H04N9/07H04N9/04
    • H04N9/04H04N9/045
    • The present invention relates to a color imaging device which suppresses false color signals appearing in an area where the difference of brightnesses is great in the horizontal or vertical direction.When the correlation between picture elements adjacent in the vertical direction is little and the false signal appears in a boundary part in the vertical direction, the false signal is detected, whereupon a color signal is demodulated by utilizing the correlation between the signals of picture elements in the horizontal direction. On the other hand, when the correlation between picture elements adjacent in the horizontal direction is little and the false signal appears in a boundary part in the horizontal direction, the false signal is detected, whereupon a color signal is demodulated by utilizing the correlation between the signals of picture elements in the vertical direction.As a result, the moire phenomenon attributed to the false color signals can be conspicuously reduced.While embodiments of the present invention refer to color imaging devices which employ MOS type solid-state imaging devices, the invention is also applicable to an imaging device which employs CCDs and a color image pickup tube which separates colors by means of a mosaic color filter.
    • 本发明涉及一种彩色成像装置,其抑制在水平或垂直方向上亮度差大的区域中出现的伪色信号。 当在垂直方向相邻的图像元素之间的相关性较小并且在垂直方向上的边界部分中出现假信号时,检测到伪信号,由此利用彩色信号中的图像元素的信号之间的相关性来解调彩色信号 水平方向。 另一方面,当在水平方向上相邻的图像元素之间的相关性较小并且在水平方向上出现边界部分的假信号时,检测到伪信号,从而通过利用 图像元素在垂直方向上的信号。 结果,归结于虚假颜色信号的莫尔色现象可以明显减少。 虽然本发明的实施例涉及使用MOS型固态成像装置的彩色成像装置,但是本发明也可应用于采用CCD的成像装置和通过马赛克滤色器分离颜色的彩色图像拾取管。
    • 2. 发明授权
    • Solid-state imaging device including noise subtraction with polarity
control
    • 固态成像装置包括具有极性控制的噪声减除
    • US4543610A
    • 1985-09-24
    • US518699
    • 1983-07-29
    • Naoki OzawaShusaku NagaharaKenji TakahashiIwao TakemotoShigeki NishizawaMasanori SatoSatoshi Suzuki
    • Naoki OzawaShusaku NagaharaKenji TakahashiIwao TakemotoShigeki NishizawaMasanori SatoSatoshi Suzuki
    • H04N5/335H04N5/341H04N5/359H04N5/374H04N3/14H04N5/21
    • H04N5/2175
    • A solid-state imaging device comprises a number of photodiodes arrayed in horizontal rows and vertical columns, a first output circuit for sequentially reading out signal charges from those photodiodes which are arrayed on odd-numbered horizontal rows, a second output circuit for sequentially reading out signal charges from the photodiodes arrayed on the even-numbered horizontal rows, a synchronizing pulse generator for synchronizing operation of the first and second output circuits, a first subtracting circuit for determining the difference between the output signals of the first and second output circuits in odd-numbered field, and a second subtracting circuit for determining the difference between the output signals of the first and second output circuits in even-numbered field. The outputs of the first and second subtracting circuit are alternately extracted in synchronism with the synchronizing pulse produced by the synchronizing pulse generator. The solid-state imaging device is made immune to the smear phenomenon. The invention can be advantageously applied to the solid-state imaging device of CCD type as well as MOS type.
    • 固态成像装置包括以水平行和垂直列排列的多个光电二极管,第一输出电路,用于顺序地从排列在奇数水平行上的那些光电二极管读出信号电荷;第二输出电路,用于依次读出 来自布置在偶数水平行上的光电二极管的信号电荷,用于同步第一和第二输出电路的操作的同步脉冲发生器,用于确定奇数的第一和第二输出电路的输出信号之间的差异的第一减法电路 以及用于确定偶数场中的第一和第二输出电路的输出信号之间的差的第二减法电路。 与同步脉冲发生器产生的同步脉冲同步地交替地提取第一和第二减法电路的输出。 使固态成像装置免受涂片现象的影响。 本发明可以有利地应用于CCD型的固态成像装置以及MOS型。
    • 3. 发明授权
    • Optical filter for color imaging device
    • 彩色成像装置用滤光片
    • US4626897A
    • 1986-12-02
    • US494449
    • 1983-05-13
    • Masanori SatoShusaku NagaharaKenji Takahashi
    • Masanori SatoShusaku NagaharaKenji Takahashi
    • G02B27/09G02B27/46H04N9/04H04N9/07H04N9/077G02B5/30G02B27/28
    • G02B27/0988G02B27/46H04N9/07
    • A spatial frequency filter apparatus for suppressing spurious signals of the type generated in a color television camera incorporating a mosaic color encoding filter for multiplexing color signals includes two double refraction plates for filtering natural light introduced through a lens system in both the horizontal and vertical directions and an optical plate, such as a quarter wavelength plate or a rotatory polarization plate, interposed between the two double refraction plates. By causing natural light to transmit through the two double refraction plates and the optical plate before being introduced to the mosaic color encoding filter, the spurious signals are suppressed, whereby false color which may otherwise make an appearance at the contours of an image picked up by the color television camera can be significantly reduced.
    • 一种空间频率滤波装置,用于抑制彩色电视摄像机中产生的混合彩色信号的马赛克彩色编码滤波器产生的杂散信号,包括两个双折射板,用于对在水平和垂直方向上透过透镜系统引入的自然光进行滤波, 插入在两个双折射板之间的光学板,例如四分之一波长板或旋转偏振板。 通过在引入马赛克颜色编码滤光器之前使自然光透过两个双折射板和光学板,抑制杂散信号,由此可能会导致伪像,否则可能会在由图像拾取的图像的轮廓上出现 彩色电视机可以大大减少。