Method and apparatus for checking defect on display screen
    1.
    发明授权
    Method and apparatus for checking defect on display screen 失效
    用于检查显示屏幕上的缺陷的方法和装置

    公开(公告)号:US5319459A

    公开(公告)日:1994-06-07

    申请号:US857662

    申请日:1992-03-26

    IPC分类号: G01M11/00 G09G5/00 H04N17/04

    CPC分类号: H04N17/04

    摘要: An apparatus for identifying positions of pixel defects on a display screen, such as a cathode-ray tube or a liquid crystal display, operates to pick up an image signal of a display screen representing a predetermined image with an imaging camera, shift the image signal of the imaging camera by one pixel in one and another directions with respect to the display screen, and obtain a difference of a signal level between a defective portion and a normal portion on the screen, based on the signals obtained when the image signal of the imaging camera is shifted in one and another directions. The apparatus also serves to calculate a relative inclination between the imaging camera and the display screen for obtaining a difference of a signal level between a defective portion and a normal portion of each pixel. The results make it possible to clearly identify the difference of the signal level between the defective portion and the normal portion.

    摘要翻译: 用于识别诸如阴极射线管或液晶显示器的显示屏上的像素缺陷的位置的装置操作以用成像照相机拾取表示预定图像的显示屏幕的图像信号,将图像信号 的摄像机相对于显示画面在一个方向和另一个方向上的一个像素,并且基于当屏幕上的缺陷部分和正常部分之间的信号电平的差异, 成像相机在一个方向和另一个方向上移动。 该装置还用于计算成像相机和显示屏幕之间的相对倾斜度,以获得每个像素的缺陷部分和法线部分之间的信号电平差。 结果可以清楚地识别缺陷部分和法线部分之间的信号电平的差异。

    Method for continuous refining of a molten iron base metal
    2.
    发明授权
    Method for continuous refining of a molten iron base metal 失效
    铁水贱金属的连续精炼方法

    公开(公告)号:US4084959A

    公开(公告)日:1978-04-18

    申请号:US750722

    申请日:1976-12-15

    IPC分类号: C21C1/02 C21C7/02

    CPC分类号: C21C1/02 Y10S75/957

    摘要: A molten iron is continuously refined in a refining vessel of a closed type using a flux composed chiefly of an alkali metal compound so as to decrease the content of P and S to a low level. The alkali metal compound is recovered from the evaporating material and slag generated in the refining and is again used in the refining, while such valuable elements as P, V, etc. may be recovered.The molten iron thus refined can be converted into a steel of high quality in a known oxygen steel making furnace substantially by means of decarburization only and without the use of any flux or with a slight amount thereof.The practice of this invention makes it possible to substantially obviate a substance to be discarded or rejected in the steel making process.

    摘要翻译: 使用主要由碱金属化合物组成的助熔剂,在密闭型精炼容器中连续精炼铁水,以将P和S的含量降低到低水平。 从蒸发材料中回收碱金属化合物和在精炼中产生的炉渣,并再次用于精炼中,而可以回收P,V等有价值的元素。

    Method of aging cathode-ray tube
    3.
    发明授权
    Method of aging cathode-ray tube 失效
    阴极射线管老化方法

    公开(公告)号:US4929209A

    公开(公告)日:1990-05-29

    申请号:US225352

    申请日:1988-07-28

    IPC分类号: H01J9/44

    CPC分类号: H01J9/445

    摘要: For aging a cathode-ray tube which has a cathode capable of emitting an electron beam, a first electrode for limiting the electron beam, a second electrode for accelerating electrons of the limited electron beam, a third electrode for focusing the accelerated electron beam and an anode, the cathode is energized so that an electron beam is emitted therefrom while D.C. rated voltages are applied to the first and second electrodes, respectively, and first and second voltages are applied to the third electrode and the anode, respectively, for a predetermined time. The first and second voltages are time-varying within first and second zones each of which is between a first level lower than the D.C. rated voltage on the second electrode and a second level higher than the highest one of the voltages on the third electrode with which an electric current flows in the second electrode with the electron beam emitted from the cathode. The first time-varying voltage is in phase with and lower than the second time-varying voltage. The first time-varying voltage is varying so as to be at a level between the first and second levels at least for a part of the above-mentioned predetermined time.

    摘要翻译: 为了老化具有能够发射电子束的阴极的阴极射线管,用于限制电子束的第一电极,用于加速受限电子束的电子的第二电极,用于聚焦加速电子束的第三电极和 阳极,阴极被通电,使得电子束从其中发射,而直流额定电压分别施加到第一和第二电极,并且第一和第二电压分别施加到第三电极和阳极预定时间 。 第一和第二电压在第一和第二区域内是随时间变化的,每个区域在第二电极之间的第一电平低于第二电极上的直流额定电压,第二电平高于第三电极上的最高电压, 电流从阴极发射的电子束流过第二电极。 第一时变电压与第二时变电压同相并且低于第二时变电压。 第一时变电压是变化的,以便至少在上述预定时间的一部分处于第一和第二电平之间的电平。