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    • 1. 发明授权
    • Signal processing apparatus and method
    • 信号处理装置及方法
    • US4519046A
    • 1985-05-21
    • US293225
    • 1981-08-07
    • Trevor W. Cole
    • Trevor W. Cole
    • G02F3/00G06E3/00H03K19/14H03K19/20G06G9/00
    • H03K19/14G06E3/005
    • Signal processing, particularly correlation and auto-correlation, is effected using a "light panel". The light panel consists of (a) an array of two-terminal light-emitting or light-modulating elements (10), the optical state of each element being changed from a first state to a second state when a voltage difference is applied across its terminals, and (b) a complementary array of photo-diodes (12), each arranged to receive light from a respective element of the array of light-emitting or light-modulation elements (10). The interconnection between the two arrays may be simply an optical lens (11). For auto-correlation, each array may be a linear array, with the signal from a single signal source applied to the terminals of each element (10) both instantaneously and after a predetermined time delay. For cross-correlation, each element (10) will be located at a cross-over point of an m x n matrix of conductors (insulated from each other) with its terminals connected to respective conductors at the cross-over point. When the light panel is used for correlation, the photodiodes act as charge integrators. Uses of the apparatus and method include image processing, image analysis and speckle interferometry.
    • PCT No.PCT / AU80 / 00109 Sec。 371日期1981年8月7日 102(e)日期1981年8月7日PCT提交1980年12月16日PCT公布。 出版物WO81 / 01927 日期:1981年7月9日。信号处理,特别是相关和自相关,使用“亮面板”进行。 该光板包括(a)两端发光或光调制元件阵列(10),当在其上施加电压差时,每个元件的光学状态从第一状态改变到第二状态 端子,以及(b)互补阵列的光电二极管(12),每个光电二极管(12)被布置成接收来自发光或光调制元件阵列(10)的相应元件的光。 两个阵列之间的互连可以仅仅是光学透镜(11)。 对于自相关,每个阵列可以是线性阵列,其中来自单个信号源的信号瞬时地和在预定时间延迟之后施加到每个元件(10)的端子。 对于互相关,每个元件(10)将位于m×n矩阵的导体(彼此绝缘)的交叉点处,其端子在交叉点处连接到相应的导体。 当光板用于相关时,光电二极管充当电荷积分器。 该装置和方法的使用包括图像处理,图像分析和斑点干涉测量。