Accurate on-site reference for automatic size and position adjustment
    1.
    发明授权
    Accurate on-site reference for automatic size and position adjustment 有权
    精确的现场参考,用于自动尺寸和位置调整

    公开(公告)号:US06259483B1

    公开(公告)日:2001-07-10

    申请号:US09165171

    申请日:1998-10-01

    IPC分类号: H04N504

    CPC分类号: H04N3/227

    摘要: Determining a phase shift compensation for automatically centering an image by measuring a start time delay between a horizontal scan line signal and an active video signal, measuring an end time delay between the active video signal and the horizontal scan line signal, and computing a phase shift for a horizontal flyback signal using the start time delay and the end time delay. A system to center an image on a monitor includes a video processing circuit and a rasterizer. The video processing circuit receives a video signal and measures a start time delay and an end time delay between a horizontal scan line signal and an active video signal. The circuit generates a phase shift used to generate a horizontal flyback signal using the measured start time delay and the end time delay. The rasterizer receives the output of the video processing circuit to control a scanning element.

    摘要翻译: 通过测量水平扫描线信号和有效视频信号之间的开始时间延迟来确定用于自动对中图像的相移补偿,测量有效视频信号和水平扫描线信号之间的结束时间延迟,以及计算相移 对于使用起始时间延迟和结束时间延迟的水平反激信号。 在监视器上使图像居中的系统包括视频处理电路和光栅化器。 视频处理电路接收视频信号并测量水平扫描线信号和有效视频信号之间的开始时间延迟和结束时间延迟。 电路产生用于使用测量的启动时间延迟和结束时间延迟来产生水平反激信号的相移。 光栅化器接收视频处理电路的输出以控制扫描元件。

    Correction of corrupted data in capacitor switching control to maintain
horizontal linearity in video monitors
    2.
    发明授权
    Correction of corrupted data in capacitor switching control to maintain horizontal linearity in video monitors 失效
    纠正电容切换控制中损坏的数据,以保持视频监视器的水平线性

    公开(公告)号:US6137243A

    公开(公告)日:2000-10-24

    申请号:US164213

    申请日:1998-09-30

    CPC分类号: H04N3/233 H04N3/27

    摘要: The present invention is a method and apparatus for selecting a capacitor value corresponding to a horizontal frequency in a video monitor. The technique determines the horizontal frequency and creates a limit on a default capacitor value which is obtained from the determined horizontal frequency. An updated value is compared with the limit to generate a comparison result. The capacitor value between the default capacitor value and the updated value is selected based on the comparison result.

    摘要翻译: 本发明是一种在视频监视器中选择对应于水平频率的电容器值的方法和装置。 该技术决定了水平频率,并对从确定的水平频率获得的默认电容值产生限制。 将更新的值与限制进行比较以生成比较结果。 根据比较结果选择默认电容值与更新值之间的电容值。

    Vertical pin distortion correction apparatus and method for a multi-scan display
    4.
    发明授权
    Vertical pin distortion correction apparatus and method for a multi-scan display 失效
    用于多扫描显示的垂直针失真校正装置和方法

    公开(公告)号:US06448945B1

    公开(公告)日:2002-09-10

    申请号:US09695123

    申请日:2000-10-23

    IPC分类号: G09G106

    摘要: An apparatus and method for providing image correction for a multifrequency display system. The apparatus comprises a circuit that generates a first signal based on a correction signal, a horizontal synchronization signal and a vertical synchronization signal. The apparatus also comprises a deflection circuit that generates a deflection signal based on the first signal and the vertical synchronization signal. The deflection circuit is operable within a range of frequencies. A video processing circuit coupled to the deflection circuit, and receives a video input signal and the deflection signal. The video processing circuit generates an output video signal based on the deflection signal and the video input signal.

    摘要翻译: 一种用于为多频显示系统提供图像校正的装置和方法。 该装置包括基于校正信号,水平同步信号和垂直同步信号产生第一信号的电路。 该装置还包括基于第一信号和垂直同步信号产生偏转信号的偏转电路。 偏转电路在频率范围内可操作。 耦合到偏转电路的视频处理电路,并且接收视频输入信号和偏转信号。 视频处理电路基于偏转信号和视频输入信号产生输出视频信号。

    Waveform correction using inductance-controllable inductor
    5.
    发明授权
    Waveform correction using inductance-controllable inductor 失效
    使用电感可控电感进行波形校正

    公开(公告)号:US06201358B1

    公开(公告)日:2001-03-13

    申请号:US09143541

    申请日:1998-08-28

    申请人: Taro Tadano

    发明人: Taro Tadano

    IPC分类号: G09G104

    CPC分类号: H04N3/233 H04N3/2335

    摘要: A waveform correction system using inductance-controllable inductors suitable for use in the horizontal sweep circuits of televisions and computer displays includes a linearity correction coil (18) that is connected in parallel to the horizontal linearity coil (12) of the sweep circuit and used to selectively alter the inductance of the horizontal linearity coil (12) to correct for non-linearities in the horizontal sweep waveform. The linearity correction coil (18) has an input coil (20) cross-coupled to an output coil (22) through a core (24) with the output coil (22) connected in parallel with the horizontal linearity coil (12). The input coil (20) is connected between a control node (26) and circuit ground. A controller (28), in the form of a programmed microprocessor, PLA, or similar device, includes a memory (32) into which digital correction factors are stored as a function of the forward left-to-right scan position of the electron beam as it sweeps from the left side to the right side of the display screen. As the electron beam sweeps left to right, a control current through the input coil (20) of the linearity correction coil (18) effects waveform correction.

    摘要翻译: 使用适用于电视和计算机显示器的水平扫描电路的电感可控电感器的波形校正系统包括线性校正线圈(18),其与扫描电路的水平线性线圈(12)并联连接,并用于 选择性地改变水平线性线圈(12)的电感以校正水平扫描波形中的非线性。 线性校正线圈(18)具有通过芯(24)与输出线圈(22)交叉耦合的输入线圈(20),输出线圈(22)与水平线性线圈(12)并联连接。 输入线圈(20)连接在控制节点(26)和电路接地之间。 形式为编程的微处理器PLA或类似装置的控制器(28)包括存储器(32),其中存储数字校正因子作为电子束的向前左右扫描位置的函数 因为它从显示屏幕的左侧扫描到右侧。 随着电子束从左向右扫描,通过线性校正线圈(18)的输入线圈(20)的控制电流实现波形校正。

    Beam current detection and control system for a cathode ray tube
    6.
    发明授权
    Beam current detection and control system for a cathode ray tube 失效
    用于阴极射线管的光束电流检测和控制系统

    公开(公告)号:US5892544A

    公开(公告)日:1999-04-06

    申请号:US929991

    申请日:1997-09-15

    IPC分类号: G09G1/00 H04N5/14 H04N5/68

    CPC分类号: H04N5/141

    摘要: The present invention relates to a beam current control system for detecting and controlling a beam current generated by a cathode ray tube. The system comprises a video processing circuit that receives a first signal, and which generates a second signal that includes a video signal and a synchronization signal, which is provided to the cathode ray tube. The cathode ray tube generates a beam current corresponding to the second signal, where the beam current has a video signal portion and a synchronization signal portion. A storage element coupled between the video processing circuit and the cathode ray tube clamps the second signal at a first predetermined level, and stores an electrical charge corresponding to the video signal portion of the beam current during a first time interval. A first circuit coupled at one end to the storage element, and at the other end, to the video processing circuit, is operable upon receipt of a control signal from the video processing circuit, corresponding to the synchronization signal during the first time interval, to facilitate discharge of the electrical charge into the first circuit. The first circuit generates a third signal representative of a magnitude of the electrical charge. A second circuit coupled to the first circuit is configured to provide an output signal to the video processing circuit, the output signal corresponding to a difference between the third signal and a second predetermined level, for adjusting the beam current during a following time interval.

    摘要翻译: 本发明涉及一种用于检测和控制由阴极射线管产生的束电流的束流控制系统。 该系统包括接收第一信号并且产生包括提供给阴极射线管的视频信号和同步信号的第二信号的视频处理电路。 阴极射线管产生对应于第二信号的束电流,其中束电流具有视频信号部分和同步信号部分。 耦合在视频处理电路和阴极射线管之间的存储元件以第一预定电平钳位第二信号,并且在第一时间间隔期间存储对应于束电流的视频信号部分的电荷。 在一端耦合到存储元件,另一端耦合到视频处理电路的第一电路可在从视频处理电路接收到对应于在第一时间间隔期间的同步信号的控制信号时操作到 有助于将电荷放电到第一电路中。 第一电路产生代表电荷大小的第三信号。 耦合到第一电路的第二电路被配置为向视频处理电路提供输出信号,输出信号对应于第三信号和第二预定电平之间的差,用于在随后的时间间隔期间调整电流。

    Method and apparatus for providing moiré effect correction on a multi-scan display monitor
    7.
    发明授权
    Method and apparatus for providing moiré effect correction on a multi-scan display monitor 失效
    用于在多扫描显示器上提供莫尔效应校正的方法和装置

    公开(公告)号:US06225762B1

    公开(公告)日:2001-05-01

    申请号:US09165172

    申请日:1998-10-01

    IPC分类号: G09G104

    摘要: A moiré adjustment circuit receives a horizontal synchronization signal having a horizontal scanning frequency and a moiré adjustment signal substantially proportional to a horizontal spatial offset of alternate display lines on the display to correct the moiré effect. The moiré adjustment circuit generates a horizontal position signal having a first frequency proportional to the horizontal scanning frequency and a position value substantially proportional to the moiré adjustment signal and the horizontal scanning frequency. A horizontal position control circuit, coupled to the moiré adjustment circuit, generates a horizontal reference signal having a second frequency substantially equal to the horizontal scanning frequency and a reference phase that is shifted from a synchronization phase of the horizontal synchronization signal substantially in proportion to the horizontal position signal. A horizontal driver circuit, coupled to the horizontal position control circuit, generates a flyback pulse having a third frequency substantially equal to the horizontal scanning frequency and a flyback phase that is substantially equal to the reference phase. The flyback phase controls a horizontal position of lines on the display to correct the moiré effect.

    摘要翻译: 莫尔调整电路接收具有与显示器上的交替显示行的水平空间偏移基本成比例的水平扫描频率和莫尔调整信号的水平同步信号,以校正莫尔效应。 莫尔调整电路产生具有与水平扫描频率成比例的第一频率和与莫尔调整信号和水平扫描频率基本成比例的位置值的水平位置信号。 水平位置控制电路,耦合到云纹调整电路,产生具有基本上等于水平扫描频率的第二频率的水平参考信号和从水平同步信号的同步相位基本上与 水平位置信号。 耦合到水平位置控制电路的水平驱动器电路产生具有基本上等于水平扫描频率的第三频率和基本上等于参考相位的反激相位的回扫脉冲。 回扫阶段控制显示屏上线条的水平位置,以纠正莫尔效应。

    Vertical pin distortion correction apparatus and method for a multi-scan display
    9.
    发明授权
    Vertical pin distortion correction apparatus and method for a multi-scan display 失效
    用于多扫描显示的垂直针失真校正装置和方法

    公开(公告)号:US06208320B1

    公开(公告)日:2001-03-27

    申请号:US09079658

    申请日:1998-05-15

    IPC分类号: G09G106

    摘要: An apparatus and method for providing image correction for a multi-frequency display system. The apparatus comprises a circuit that generates a first signal based on a correct on signal, a horizontal synchronization signal and a vertical synchronization signal. The apparatus also comprises a deflection circuit that generates a deflection signal based on the first signal and the vertical synchronization signal. The deflection circuit is operable within a range of frequencies. A video processing circuit coupled to the deflection circuit, and receives a video input signal and the deflection signal. The video processing circuit generates an output video signal based on the deflection signal and the video input signal.

    摘要翻译: 一种用于为多频显示系统提供图像校正的装置和方法。 该装置包括基于正确的导通信号,水平同步信号和垂直同步信号产生第一信号的电路。 该装置还包括基于第一信号和垂直同步信号产生偏转信号的偏转电路。 偏转电路在频率范围内可操作。 耦合到偏转电路的视频处理电路,并且接收视频输入信号和偏转信号。 视频处理电路基于偏转信号和视频输入信号产生输出视频信号。