Automatic alignment of cathode ray tube video displays in local magnetic
fields
    1.
    发明授权
    Automatic alignment of cathode ray tube video displays in local magnetic fields 失效
    阴极射线管视频显示在局部磁场中自动对准

    公开(公告)号:US6130505A

    公开(公告)日:2000-10-10

    申请号:US908623

    申请日:1997-08-08

    CPC classification number: H04N9/29 H01J9/44

    Abstract: 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.

    Abstract translation: 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。

    Correction for monitor refraction using empirically derived data
    2.
    发明授权
    Correction for monitor refraction using empirically derived data 失效
    使用经验派生数据修正监视器折射

    公开(公告)号:US5657079A

    公开(公告)日:1997-08-12

    申请号:US617322

    申请日:1996-03-18

    CPC classification number: H04N17/04

    Abstract: 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.

    Abstract translation: 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。

    Alignment of cathode ray tube displays using a video graphics controller
    4.
    发明授权
    Alignment of cathode ray tube displays using a video graphics controller 失效
    使用视频图形控制器对阴极射线管显示器进行对准

    公开(公告)号:US06437829B1

    公开(公告)日:2002-08-20

    申请号:US08936675

    申请日:1997-09-24

    Abstract: 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.

    Abstract translation: 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。

    Method and apparatus for transforming coordinate systems in an automated
video monitor alignment system
    5.
    发明授权
    Method and apparatus for transforming coordinate systems in an automated video monitor alignment system 失效
    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

    公开(公告)号:US5510833A

    公开(公告)日:1996-04-23

    申请号:US258695

    申请日:1994-06-13

    CPC classification number: H04N17/04

    Abstract: 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.

    Abstract translation: 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。

    Method and apparatus for making corrections in a video monitor during
horizontal scan
    6.
    发明授权
    Method and apparatus for making corrections in a video monitor during horizontal scan 失效
    在水平扫描期间在视频监视器中进行校正的方法和装置

    公开(公告)号:US5504521A

    公开(公告)日:1996-04-02

    申请号:US258393

    申请日:1994-06-13

    CPC classification number: G09G1/165 H04N17/04 H04N3/2335 H04N9/28 G09G2320/08

    Abstract: 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 wave form 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.

    Abstract translation: 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密度调制波形编码。 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。

    Automatic precision video monitor alignment system
    7.
    发明授权
    Automatic precision video monitor alignment system 失效
    自动精密视频监控器对准系统

    公开(公告)号:US5216504A

    公开(公告)日:1993-06-01

    申请号:US766646

    申请日:1991-09-25

    CPC classification number: H01J9/44 H04N17/04

    Abstract: An automatic precision video monitor alignment and calibration system is described which functions to precisely align all of the adjustable display characteristics of a video monitor to a high degree of precision. This alignment system can function in an automated calibration mode wherein it is independent of human input and automatically performs a series of alignment/calibration operations to precisely adjust all of the display characteristics of the video monitor in a fraction of the time required by a person to manually align the video monitor. The alignment system includes a digital control circuit located within the video monitor to precisely set and maintain each of the monitor display characteristics. The values maintained by this control circuit can be input by a person, or set automatically by a computer controlled display alignment system. The system of the present invention uses a single camera and a color analyzer to make all the measurements necessary to automatically align and calibrate a video monitor. The measurements are then used to make the adjustments, via the digital control circuit, necessary for alignment and/or calibration. A calibration computer coupled with a video coprocessor subsystem accomplish all adjustments to the monitor automatically, without the need for human intervention.

    Abstract translation: 描述了一种自动精密视频监视器对准和校准系统,其用于将视频监视器的所有可调显示特性精确地对准到高精度。 该对准系统可以在自动校准模式下工作,其中它独立于人的输入,并且自动执行一系列对准/校准操作,以在人的所需时间的一小部分中精确地调整视频监视器的所有显示特性 手动对准视频监视器。 对准系统包括位于视频监视器内的数字控制电路,以精确地设置和维护每个监视器显示特性。 由该控制电路维护的值可由人输入,或由计算机控制的显示器对准系统自动设定。 本发明的系统使用单个相机和颜色分析器来进行必要的所有测量以自动对准和校准视频监视器。 然后测量值用于通过数字控制电路进行校准和/或校准所需的调整。 与视频协处理器子系统耦合的校准计算机自动完成对监视器的所有调整,而不需要人为干预。

    Method and apparatus for providing a dynamic rotational alignment of a cathode ray tube raster
    8.
    发明授权
    Method and apparatus for providing a dynamic rotational alignment of a cathode ray tube raster 失效
    用于提供阴极射线管光栅的动态旋转对准的方法和装置

    公开(公告)号:US07262563B2

    公开(公告)日:2007-08-28

    申请号:US10707314

    申请日:2003-12-04

    Applicant: James R. Webb

    Inventor: James R. Webb

    CPC classification number: H04N3/22

    Abstract: A method and apparatus used to step and correct the position of raster lines in a sinusoidal or zig-zag deflection system. By combining the magnetic flux generated with a rotation “twister” coil and a vertical deflection coil, scan lines can be uniformly spaced and separated nearly to their ends. Accordingly, the magnetic flux generated with the twister coil is adjusted going in the left to right direction then reversed in polarity and readjusted while returning from right to left. It is this controlled twister flux that combines with the linear vertical deflection flux to straighten and then step each scan line to produce an aligned raster.

    Abstract translation: 用于在正弦或曲折偏转系统中步进和校正光栅线的位置的方法和装置。 通过组合产生的旋转“扭转器”线圈和垂直偏转线圈的磁通,扫描线可以均匀地间隔开并几乎分开到它们的端部。 因此,由扭转线圈产生的磁通量在左右方向上被调节,然后反向极性,并从右向左返回。 这种受控的扭转器通量与线性垂直偏转通量相结合,以使其拉直,然后逐步扫描每条扫描线以产生对准的光栅。

    Detecting horizontal blanking time in cathode ray tube devices
    9.
    发明授权
    Detecting horizontal blanking time in cathode ray tube devices 失效
    检测阴极射线管装置中的水平消隐时间

    公开(公告)号:US5969486A

    公开(公告)日:1999-10-19

    申请号:US908859

    申请日:1997-08-08

    CPC classification number: H04N3/223 H04N3/233

    Abstract: An apparatus and method are disclosed for generating timing pulses to control various functions in a video monitor including the switching of video amplifiers in cathode ray tube (CRT) devices, the control of the phase and frequency of phase locked loops, etc. Unlike previous methods, where switching is timed and controlled by monitoring the retrace voltage level, the system of the present invention monitors the change in direction of current in the retrace tuning capacitor. Monitoring the retrace capacitor current, provides an extremely accurate method for timing in horizontal deflection circuits. The apparatus of the present the invention comprises a small bead inductor placed in the current path of a horizontal retrace capacitor within the horizontal deflection circuit of the cathode ray tube device. Measuring the voltage across the bead inductor allows a very precise monitoring of the current through the retrace tuning capacitor. By designing the size of the bead inductor as disclosed, precise electrical pulses can be generated and detected during the retrace time of the CRT electron beam. These precise pulses are then used to generate accurate control signals for use within the CRT device. The invention also discloses an apparatus and method that minimizes left side ringing distortion in cathode ray tube video displays. Left side ringing is reduced due to the addition of the bead inductor to the horizontal deflection circuit, which lowers the stray resonant frequency within the horizontal deflection circuit.

    Abstract translation: 公开了一种用于产生定时脉冲以控制视频监视器中的各种功能的装置和方法,包括阴极射线管(CRT)装置中的视频放大器的切换,锁相环的相位和频率的控制等。与先前的方法不同 通过监视回扫电压电平对开关进行定时和控制,本发明的系统监视回扫调谐电容器中的电流方向的变化。 监控回扫电容器电流,为水平偏转电路中的定时提供了非常准确的方法。 本发明的装置包括放置在阴极射线管装置的水平偏转电路内的水平回扫电容器的电流通路中的小珠电感器。 测量珠电感两端的电压可以非常精确地监测通过回扫调谐电容的电流。 通过设计如所公开的珠电感器的尺寸,可以在CRT电子束的回扫时间期间产生和检测精确的电脉冲。 然后使用这些精确的脉冲来产生用于CRT装置内的精确控制信号。 本发明还公开了一种使阴极射线管视频显示器中的左侧振铃失真最小化的装置和方法。 由于向水平偏转电路添加了珠子电感器,所以左侧振铃减小,这降低了水平偏转电路内的杂散谐振频率。

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