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    • 2. 发明授权
    • Fine tuning a sampling clock of analog signals having digital information for optimal digital display
    • 微调具有数字信息的模拟信号采样时钟,实现最佳数字显示
    • US07391416B2
    • 2008-06-24
    • US10498979
    • 2002-12-26
    • Gady Yearim
    • Gady Yearim
    • G09G5/00
    • G09G5/008
    • Method and system for fine tuning frequency and phase of a sampling clock of analog signals (R, G, B) having digital information, for sampling the analog signals within an optimal sampling period, enabling optimal display by a digital display device (92). Small amount of information from input signals is required for rapidly and accurately determining values of frequency and phase of the sampling clock. After measuring using a measurement system (96) and obtaining pixel values while sweeping phase values of signals using a phase locked loop (PLL) mechanism (48), there is determining values of two parameters, (i) error of an initial frequency value of the sampling clock (Rx clock), proportional to error of an initial phase locked loop (PLL) division factor value, and (ii) phase of the sampling clock, without need for making additional measurements based on these values, using a control unit (94).
    • 具有数字信息的模拟信号(R,G,B)的采样时钟的微调频率和相位的方法和系统,用于在最佳采样周期内对模拟信号进行采样,从而实现数字显示设备(92)的最佳显示。 需要从输入信号得到的少量信息用于快速准确地确定采样时钟的频率和相位值。 在使用测量系统(96)测量并且使用锁相环(PLL)机构(48)扫描信号的相位值时获得像素值,确定两个参数的值,(i)初始频率值的误差 与初始锁相环(PLL)分频因子值的误差成比例的采样时钟(Rx时钟)和(ii)采样时钟的相位,而不需要使用控制单元(基于这些值)进行基于这些值的附加测量 94)。
    • 3. 发明授权
    • Electronic keystone correction for electronic devices with a visual display
    • 具有视觉显示功能的电子设备的电子梯形失真校正
    • US06191827B1
    • 2001-02-20
    • US09201849
    • 1998-12-01
    • Yosef SegmanGady YearimAvy Strominger
    • Yosef SegmanGady YearimAvy Strominger
    • H04N323
    • H04N3/2335
    • A method of electronic Keystone correction for electronic devices having visual displays which exhibit optical distortion on the display screen. The corrective method is based on computation and electronic (physical) manipulation of the pixels of a visual display screen grid, and features the principle steps of: 1) characterization of the size of an input image, 2) determination of the number of generated pixels in the output image, 3) determination of the real position of each pixel in the output image by performing an electronic distortion to the input image opposite to the optical distortion of the input image, 4) interpolation of the output value of all color components of each pixel of the input image, 5) correction of (non-uniform) edge effects at both ends of each line of pixels, 6) transmission of the output corrected image to the electronic display device, individually, pixel by pixel, or as complete set of corrected pixels of the image, and 7) display of the perfected corrected optical image. The method of this invention solves at least two universally known optical distortion problems involving trapezoidal distortion and computerized diagonal line drawing. Moreover, the method of this invention is applicable to real time domain of operation of electronic devices with visual displays.
    • 一种具有在显示屏幕上呈现光学失真的视觉显示器的电子设备的电子梯形校正方法。 校正方法基于视觉显示屏网格像素的计算和电子(物理)操纵,其特征在于:1)表征输入图像的大小,2)确定所生成的像素数 在输出图像中,3)通过对与输入图像的光学失真相反的输入图像执行电子失真来确定输出图像中的每个像素的实际位置,4)所有颜色分量的输出值的内插 输入图像的每个像素,5)校正每行像素两端的(非均匀)边缘效果,6)逐个像素地将输出校正图像传输到电子显示装置,或者作为完整的 图像的校正像素组,以及7)完美校正的光学图像的显示。 本发明的方法解决了至少两个普遍已知的涉及梯形失真和计算机对角线绘图的光学失真问题。 此外,本发明的方法适用于具有视觉显示器的电子设备的实时操作领域。
    • 5. 发明申请
    • Fine tuning a sampling clock of analog signals having digital information for optimal digital display
    • 微调具有数字信息的模拟信号采样时钟,实现最佳数字显示
    • US20050020228A1
    • 2005-01-27
    • US10498979
    • 2002-12-26
    • Gady Yearim
    • Gady Yearim
    • G09G3/20G09G5/00H04B1/06
    • G09G5/008
    • Method and system for fine tuning frequency and phase of a sampling clock of analog signals (R, G, B) having digital information, for sampling the analog signals within an optimal sampling period, enabling optimal display by a digital display device (92). Small amount of information from input signals is required for rapidly and accurately determining values of frequency and phase of the sampling clock. After measuring using a measurement system (96) and obtaining pixel values while sweeping phase values of signals using a phase locked loop (PLL) mechanism (48), there is determining values of two parameters, (i) error of an initial frequency value of the sampling clock (Rx clock), proportional to error of an initial phase locked loop (PLL) division factor value, and (ii) phase of the sampling clock, without need for making additional measurements based on these values, using a control unit (94).
    • 具有数字信息的模拟信号(R,G,B)的采样时钟的微调频率和相位的方法和系统,用于在最佳采样周期内对模拟信号进行采样,从而实现数字显示设备(92)的最佳显示。 需要从输入信号得到的少量信息用于快速准确地确定采样时钟的频率和相位值。 在使用测量系统(96)测量并且使用锁相环(PLL)机构(48)扫描信号的相位值时获得像素值,确定两个参数的值,(i)初始频率值的误差 与初始锁相环(PLL)分频因子值的误差成比例的采样时钟(Rx时钟)和(ii)采样时钟的相位,而不需要使用控制单元(基于这些值)进行基于这些值的附加测量 94)。