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    • 1. 发明授权
    • Alignment of cathode ray tube video displays using a host computer processor
    • 使用主机处理器对阴极射线管视频显示进行对准
    • US06285397B1
    • 2001-09-04
    • US08986257
    • 1997-12-05
    • James R. WebbRon C. Simpson
    • James R. WebbRon C. Simpson
    • H04N1700
    • G09G1/165G09G2320/0693G09G2370/04H04N17/045Y10S345/904
    • A system for automatically aligning video images on display devices such as cathode ray tube (CRT) monitors that use the processor and memory of a host computer to implement the alignment process. The system uses a host computer processor and previously generated correction factor data, representative of specific display distortion characteristics, to produce driver signals necessary to affect the alignment of video images on a CRT screen. The previously stored correction factor data may be retrieved from a characterization module within the display device or from any other convenient storage location. The correction factor data is processed by the host computer to produce correction control data which is transmitted, over a bi-directional serial connector, or a video connector, to the display device where the data is read by correction and driver circuitry. The specialized correction and driver circuitry set static decoders to generate the required correction signal for each distortion parameter at each location of the display screen. Correction factor data for dynamic distortion parameters may be stored in monitor memory where the data is used by waveform generators to produce dynamic correction signals. The plurality of correction signals are integrated, filtered, and summed by the CRT correction and driver circuitry before being applied to the CRT control circuits to align the video image. The present invention allows new correction signals to be quickly calculated by the host computer and applied to the CRT whenever a display parameter, such as resolution, frequency, color depth, etc. is changed. The host processor may generate the new data by using a gain matrix table, or interpolation techniques, as well as employing standard transformation equations.
    • 用于在诸如使用主计算机的处理器和存储器的显示设备(例如阴极射线管(CRT))监视器上自动对准视频图像以实现对准过程的系统。 该系统使用主计算机处理器和先前产生的代表特定显示失真特性的校正因子数据来产生影响CRT屏幕上的视频图像对准所需的驱动器信号。 可以从显示装置内的表征模块或任何其他方便的存储位置检索先前存储的校正因子数据。 校正因子数据由主计算机处理以产生通过双向串行连接器或视频连接器传输到校正和驱动器电路读取数据的显示装置的校正控制数据。 专门的校正和驱动电路设置静态解码器,以在显示屏幕的每个位置处为每个失真参数生成所需的校正信号。 用于动态失真参数的校正因子数据可以存储在监视器存储器中,其中数据由波形发生器使用以产生动态校正信号。 在施加到CRT控制电路以对准视频图像之前,多个校正信号被CRT校正和驱动器电路集成,滤波和相加。 本发明允许由主机快速计算出新的校正信号,并且当诸如分辨率,频率,颜色深度等的显示参数改变时,应用于CRT。 主处理器可以通过使用增益矩阵表或内插技术以及采用标准变换方程来生成新数据。
    • 2. 发明授权
    • High speed digital zone control
    • 高速数字区控制
    • US06281950B1
    • 2001-08-28
    • US09034479
    • 1998-03-04
    • James R. WebbRon C. Simpson
    • James R. WebbRon C. Simpson
    • H04N928
    • H04N3/2335G09G1/00H04N17/04
    • Disclosed is a high-speed approximation device that generates zone correction values in both the horizontal and vertical directions. Group correction values are stored for specific physical locations on the screen for each correction factor parameter. Higher resolution correction signals can be produced by generating zone correction values. Zone correction values are produced for binary fractional addresses that correspond to specific physical locations on the screen. By addressing specific binary fractional addresses that correspond to the location of the video image on the screen, new group correction values do not have to be produced each time the horizontal or vertical size or centering or frequency of the video image is changed. Additionally, by using start addresses and end addresses, zone correction values only have to be produced for the area which the video image occupies on the screen. The present invention also uses a high-speed binary fractional multiplier that multiplies a correction value by a series of binary numbers that simply shift the decimal location of the correction value to produce quotient values. Selection of the quotient values is made by a binary fractional address signal that indicates the specific address for the zone correction value to be generated. By transforming from an arbitrary line count address space to a binary physical address space, the present invention allows for the use of a simple and fast parallel binary fractional multiplier engine.
    • 公开了一种在水平和垂直方向上产生区域校正值的高速近似装置。 对于每个校正因子参数,屏幕上的特定物理位置存储组校正值。 可以通过产生区域校正值来产生更高分辨率的校正信号。 对于与屏幕上的特定物理位置相对应的二进制分数地址,产生区域校正值。 通过寻址对应于视频图像在屏幕上的位置的特定二进制分数地址,每当视频图像的水平或垂直尺寸或定心或频率改变时,不必产生新的组校正值。 另外,通过使用起始地址和结束地址,只需要为视频图像在屏幕上占据的区域生成区域校正值。 本发明还使用高速二进制分数乘法器,其将校正值乘以一系列二进制数,其简单地移动校正值的小数位置以产生商值。 通过二进制分数地址信号来选择商值,该二进制小数地址信号指示要生成的区域校正值的具体地址。 通过从任意行计数地址空间转换为二进制物理地址空间,本发明允许使用简单且快速的并行二进制小数乘法器引擎。
    • 3. 发明授权
    • Alignment of a video monitor using an on-screen display chip and a gain
matrix table
    • 使用屏幕显示芯片和增益矩阵表对视频监视器进行对齐
    • US6052146A
    • 2000-04-18
    • US611098
    • 1996-03-05
    • James R. WebbRon C. Simpson
    • James R. WebbRon C. Simpson
    • H04N3/233H04N17/00H04N17/04
    • H04N3/2335
    • A circuit within a video monitor for making corrections during horizontal scan includes a data storage device containing information relating to a selected display parameter, an integrator receptive of the stored information and adapted to produce an integrated signal therefrom, and an amplifier receptive of the integrated signal for supplying signals to the video monitor based on the integrated signal. The information supplied from the data storage device to the integrator is encoded in a pulse density modulated waveform via a tri-state gate and a one-shot timer. The information stored in the data storage device is stored in bytes, each byte containing a "sign bit" and a plurality of data bits. The present invention also discloses the use of an on-screen display chip that uses stored fonts to generate a pulse-density modulated signal. Gradients between rows of fonts can be generated using selected fonts from a font gradient table or can be produced using an up-down counter. Gain matrix tables are also disclosed that reside in the vision system to aid the vision system in predicting proper alignment of less intelligent monitors. Gain matrix table data can also be supplied to the monitor correction table so as to provide updated intelligence to the monitor.
    • 用于在水平扫描期间进行校正的视频监视器内的电路包括数据存储装置,其包含与选择的显示参数相关的信息,接收所存储的信息的积分器,并适于产生积分信号;以及接收集成信号的放大器 用于根据积分信号向视频监视器提供信号。 从数据存储装置向积分器提供的信息通过三态门和单触发定时器以脉冲浓度调制波形编码。 存储在数据存储装置中的信息以字节存储,每个字节包含“符号位”和多个数据位。 本发明还公开了使用存储的字体的屏上显示芯片来生成脉冲密度调制信号的用途。 可以使用字体梯度表中的所选字体生成字体行之间的渐变,也可以使用递减计数器生成。 还公开了增益矩阵表,其驻留在视觉系统中以帮助视觉系统预测较不智能的监视器的正确对准。 增益矩阵表数据也可以提供给监视器校正表,以向监视器提供更新的智能。
    • 6. 发明授权
    • Automatic alignment of cathode ray tube video displays in local magnetic
fields
    • 阴极射线管视频显示在局部磁场中自动对准
    • US6130505A
    • 2000-10-10
    • US908623
    • 1997-08-08
    • James R. WebbRon C. Simpson
    • James R. WebbRon C. Simpson
    • H01J9/44H04N9/29H01J29/54
    • H04N9/29H01J9/44
    • A system and method for dynamic adjustment of video images on a cathode ray tube in diverse geographic local magnetic fields. The present invention uses a CRT magnetometer that accurately senses differences in the strength and direction of a local magnetic field in three axes, i.e., the x, y, and z axes. The cathode ray tube includes a digital monitor board or monitor circuitry that has a processor and memory and is capable of retrieving correction factor data and magnetic correction data generated by a vision system. The digital monitor board receives CRT magnetometer signals and uses the signals with magnetic correction data to adjust the correction factor data to generate locale specific correction factor data for the sensed local magnetic field. The digital monitor board is capable of decoding the locale specific correction factor data using DACs, PDMs, PWMs, and interpolation engines to generate correction signals that are used to adjust the video image to correct for magnetically induced distortion.
    • 用于在不同地理局部磁场中在阴极射线管上动态调整视频图像的系统和方法。 本发明使用CRT磁力计,其精确地感测三个轴,即x,y和z轴的局部磁场的强度和方向的差异。 阴极射线管包括具有处理器和存储器并且能够检索由视觉系统产生的校正因子数据和磁校正数据的数字监视器板或监视器电路。 数字监控板接收CRT磁力计信号,并使用具有磁校正数据的信号来调整校正因子数据,以生成感测到的局部磁场的特定区域校正因子数据。 数字监视器板能够使用DAC,PDM,PWM和内插引擎来解码特定区域校正因子数据,以产生用于调整视频图像以校正磁感应失真的校正信号。
    • 7. 发明授权
    • Correction for monitor refraction using empirically derived data
    • 使用经验派生数据修正监视器折射
    • US5657079A
    • 1997-08-12
    • US617322
    • 1996-03-18
    • James E. TharioJames R. Webb
    • James E. TharioJames R. Webb
    • H04N17/04
    • H04N17/04
    • A system for transforming coordinate systems in an automated video monitor alignment system includes a camera and computer to capture an image of the display bezel surrounding the cathode ray tube and of the image displayed on the CRT. Three dimensional models of the CRT tube and display bezel are used to compute and compensate for camera perspective. Camera pixel data can then be transformed to `flat plane` coordinates. When the relative orientation of the camera and CRT are corrected, the effects of parallax can be eliminated, allowing more accurate inspection, measurement, and lower cost fixturing on the production line. Thus, an accurate coordinate transformation from a camera-referenced coordinate system to a monitor-referenced coordinate system is made. Correction factors for correcting errors due to refraction can also be generated empirically in accordance with the present invention. Slope coordinate data is generated for a sample monitor for predetermined slope coordinate locations on the tube face. Correction signals can be generated from the slope coordinate data and measured tilt angles of the monitor relative to the vision system. Two dimensional interpolation techniques can be employed to provide slope coordinate values and correction signals for video signals that do not physically match the location of the slope coordinate locations of the sample monitor.
    • 用于在自动视频监视器对准系统中变换坐标系的系统包括摄像机和计算机,用于捕获围绕阴极射线管的显示器框架和CRT上显示的图像的图像。 CRT管和显示屏的三维模型用于计算和补偿相机视角。 摄像机像素数据可以被转换为“平面”坐标。 当相机和CRT的相对方向被校正时,可以消除视差的影响,从而允许在生产线上更准确地检查,测量和降低成本。 因此,进行从相机参考坐标系到监视器参考坐标系的精确坐标变换。 根据本发明也可以经验地产生用于校正由于折射引起的误差的校正因子。 对于管面上的预定斜率坐标位置,针对样本监视器产生斜率坐标数据。 可以从倾斜坐标数据和监视器相对于视觉系统的测量倾斜角度生成校正信号。 可以采用二维插值技术来提供不与样本监视器的斜率坐标位置物理匹配的视频信号的斜率坐标值和校正信号。
    • 9. 发明授权
    • Alignment of cathode ray tube displays using a video graphics controller
    • 使用视频图形控制器对阴极射线管显示器进行对准
    • US06437829B1
    • 2002-08-20
    • US08936675
    • 1997-09-24
    • James R. WebbRon C. Simpson
    • James R. WebbRon C. Simpson
    • H04N708
    • G09G1/167G09G1/165G09G2320/08G09G2370/04H04N17/02H04N17/04
    • Dynamic adjustment techniques for aligning video images in cathode ray tube (CRT) devices are disclosed. A host computer stores correction factor data and video image data in video graphics controller RAM. The host computer processes and transmits the correction factor data, representative of the cathode ray tube distortion characteristics, to the CRT device during the retrace time of the electron beam and video image data during the trace time. The correction factor data may be generated by a vision system, a gain matrix table, interpolation engine or manual methods. Circuitry, within the CRT device, for separating the correction factor data from the video signal is disclosed along with the methods and apparatus used to decode correction data. Data can also be transferred from the monitor back to the host computer over the video connector.
    • 公开了用于对准阴极射线管(CRT)器件中的视频图像的动态调整技术。 主机将校正因子数据和视频图像数据存储在视频图形控制器RAM中。 在跟踪时间期间,主计算机在电子束和视频图像数据的回扫时间期间处理并发送代表阴极射线管失真特性的校正因子数据到CRT器件。 校正因子数据可以由视觉系统,增益矩阵表,内插引擎或手动方法产生。 在用于将校正因子数据与视频信号分离的CRT装置内的电路与用于解码校正数据的方法和装置一起被公开。 数据也可以通过视频连接器从监视器传输回主机。
    • 10. 发明授权
    • Method and apparatus for transforming coordinate systems in an automated
video monitor alignment system
    • 用于在自动视频监视器对准系统中变换坐标系的方法和装置
    • US5510833A
    • 1996-04-23
    • US258695
    • 1994-06-13
    • James R. WebbGregory A. Kern
    • James R. WebbGregory A. Kern
    • H04N17/04
    • H04N17/04
    • A system for transforming coordinate systems in an automated video monitor alignment system includes a camera and computer to capture an image of the display bezel surrounding the cathode ray tube and of the image displayed on the CRT. Three dimensional models of the CRT tube and display bezel are used to compute and compensate for camera perspective. Camera pixel data can then be transformed to `flat plane` coordinates. When the relative orientation of the camera and CRT are corrected for, the effects of parallax can be eliminated, allowing more accurate inspection, measurement, and lower cost fixturing on the production line. Thus, an accurate coordinate transformation from a camera-referenced coordinate system to a monitor-referenced coordinate system is made.
    • 用于在自动视频监视器对准系统中变换坐标系的系统包括摄像机和计算机,用于捕获围绕阴极射线管的显示器框架和CRT上显示的图像的图像。 CRT管和显示屏的三维模型用于计算和补偿相机视角。 摄像机像素数据可以被转换为“平面”坐标。 当相机和CRT的相对方向被校正时,可以消除视差的影响,从而允许在生产线上更准确地检查,测量和降低成本。 因此,进行从相机参考坐标系到监视器参考坐标系的精确坐标变换。