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1. 发明申请

WO1992002032A1 A DEFLECTION SYSTEM WITH A CONTROLLED BEAM SPOT 审中-公开
标题翻译：具有控制光束点的偏转系统
公开(公告)号：WO1992002032A1
公开(公告)日：1992-02-06
申请号：PCT/US1991005111
申请日：1991-07-19
申请人： RCA LICENSING CORPORATION
发明人： RCA LICENSING CORPORATION , GROTE, Michael, Denton , JOHNSON, Jeffrey, Paul , BECHIS, Dennis, John
IPC分类号： H01J29/70
CPC分类号： H04N3/26 , H01J29/563 , H01J29/76 , H04N9/285
摘要： A deflection apparatus comprising a cathode ray tube produces a field gradient that reduces a tendency of a major axis of a beam spot to become elongated at each corner, at each end of a horizontal axis and at each end of a vertical axis of a display screen (22) relative to the beam spot at the center of the display screen. A beam spot stigmator (24) causes the beam spot to be substantially anastigmatic at each of the corners, the end of the horizontal axis and the end of the vertical axis of the display screen. In an embodiment of the invention, means (11) are provided for producing a first non-uniform field providing a lensing action containing a time varying field portion not produced by the deflection coils (10, 99), said means (11) comprising a quadrupole doublet.

2. 发明申请

WO03054908A9 CATHODE RAY TUBE AND ELECTRON GUN 审中-公开
标题翻译：阴极射线管和电子枪
公开(公告)号：WO03054908A9
公开(公告)日：2003-10-16
申请号：PCT/IB0205504
申请日：2002-12-16
申请人： LG PHILIPS DISPLAYS NL , STEINHAUSER HEIDRUN
发明人： STEINHAUSER HEIDRUN
IPC分类号： H01J29/48 , H01J29/56
CPC分类号： H01J29/488 , H01J29/563 , H01J2229/4803
摘要： The invention relates to a cathode ray tube having an electron gun (10) which is provided with a so-called Aberration Reducing Triode (15). The ART (15) pre-focuses the electron beam (EB) such that outer rays in the pre-focus lens (20) are near the center of the electron beam (EB) in the main lens (30). Spherical aberrations are reduced, thereby. However, under given circumstances, moirepattems can appear in the image formed on the display screen (50), especially in parts of the image having a low brightness. According to the present invention, the pre-focus lens (20) in the ART (15) is arranged such that the pre-focusing effect thereof is reduced when the beam current of the electron beam (EB) is below a predetermined threshold beam current. This reduces or eliminates the moirepattems.
摘要翻译：本发明涉及一种具有电子枪（10）的阴极射线管，该电子枪设置有所谓的失真降低三极管（15）。 ART（15）预先聚焦电子束（EB），使得预聚焦透镜（20）中的外光接近主透镜（30）中的电子束（EB）的中心。减小球面像差。然而，在给定情况下，moirepattems可以出现在形成在显示屏幕（50）上的图像中，特别是在具有低亮度的图像的部分中。根据本发明，ART（15）中的预聚焦透镜（20）布置成当电子束（EB）的束电流低于预定阈值光束电流时，其预聚焦效应降低。这可以减少或消除moirepattems。

3. 发明申请

WO1996023316A1 RASTER DEMODULATION APPARATUS AND METHOD 审中-公开
标题翻译： RASTER解调装置和方法
公开(公告)号：WO1996023316A1
公开(公告)日：1996-08-01
申请号：PCT/GB1995001927
申请日：1995-08-15
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , BEETESON, John , KNOX, Andrew
发明人： INTERNATIONAL BUSINESS MACHINES CORPORATION
IPC分类号： H01J29/56
CPC分类号： H01J29/563 , G09G1/00 , H01J29/66 , H04N3/26 , H04N3/27 , H04N3/30
摘要： Raster demodulation apparatus for a raster-scanned cathode ray tube display comprises control means (400) for varying the shape of at least one scanned electron beam spot (661-663) in a direction perpendicular to scan lines of the raster. The control means (400) comprises an electromagnet (700) for mounting on the neck of the cathode ray tube. The magnet (700) has eight pole pieces (720-790) spaced around the neck of the cathode ray tube (210). A winding (710) passes around each of the pole pieces (720-790) in succession in opposite directions so that, when an electrical current (I) is passed through the winding, adjacent pole pieces (720-790) around the neck of the cathode ray tube have different magnetic polarity to generate, within the neck of the cathode ray tube (210), a magnetic field in which magnetic lines of force (680) pass through the or each electron beam (661-663) only in a direction parallel to the scan lines of the raster.
摘要翻译：用于光栅扫描阴极射线管显示器的光栅解调装置包括用于在垂直于光栅的扫描线的方向上改变至少一个扫描的电子束光点（661-663）的形状的控制装置（400）。控制装置（400）包括用于安装在阴极射线管的颈部上的电磁体（700）。磁体（700）具有在阴极射线管（210）的颈部间隔开的八个极片（720-790）。绕组（710）在相反方向上连续穿过每个极片（720-790），使得当电流（I）穿过绕组时，相邻的极片（720-790）围绕颈部阴极射线管具有不同的磁极性，在阴极射线管（210）的颈部内产生磁力线（680）仅在一个或多个电子束（661-663）内通过该电子束（661-663）的磁场方向平行于光栅的扫描线。

4. 发明申请

WO2003054908A2 IMAGE PROCESSING METHOD AND SYSTEM TO INCREASE PERCEIVED VISUAL OUTPUT QUALITY IN CASE OF LACK OF IMAGE DATA 审中-公开
标题翻译：图像处理方法和系统在缺少图像数据的情况下增加视觉输出质量
公开(公告)号：WO2003054908A2
公开(公告)日：2003-07-03
申请号：PCT/IB2002/005504
申请日：2002-12-16
申请人： LG PHILIPS DISPLAYS, NL , STEINHAUSER, Heidrun
发明人： STEINHAUSER, Heidrun
IPC分类号： H01J29/48
CPC分类号： H01J29/488 , H01J29/563 , H01J2229/4803
摘要： The invention relates to a cathode ray tube having an electron gun (10) which is provided with a so-called Aberration Reducing Triode (15). The ART (15) pre-focuses the electron beam (EB) such that outer rays in the pre-focus lens (20) are near the center of the electron beam (EB) in the main lens (30). Spherical aberrations are reduced, thereby. However, under given circumstances, moirepattems can appear in the image formed on the display screen (50), especially in parts of the image having a low brightness. According to the present invention, the pre-focus lens (20) in the ART (15) is arranged such that the pre-focusing effect thereof is reduced when the beam current of the electron beam (EB) is below a predetermined threshold beam current. This reduces or eliminates the moirepattems.
摘要翻译：本发明涉及一种具有电子枪（10）的阴极射线管，该电子枪设置有所谓的失真降低三极管（15）。 ART（15）预先聚焦电子束（EB），使得预聚焦透镜（20）中的外光接近主透镜（30）中的电子束（EB）的中心。减小球面像差。然而，在给定的情况下，moirepattems可以出现在形成在显示屏幕（50）上的图像中，特别是在具有低亮度的图像的部分中。根据本发明，ART（15）中的预聚焦透镜（20）布置成当电子束（EB）的束电流低于预定阈值光束电流时，其预聚焦效应降低。这可以减少或消除moirepattems。

5. 发明申请

WO01048786A1 COLOUR DISPLAY DEVICE 审中-公开
标题翻译：彩色显示设备
公开(公告)号：WO01048786A1
公开(公告)日：2001-07-05
申请号：PCT/EP2000/012631
申请日：2000-12-13
IPC分类号： H01J29/48 , G09G1/00 , G09G1/28 , H01J29/56 , H04N5/68
CPC分类号： H01J29/563 , H01J2229/4841
摘要： A colour display device (19) is disclosed having an improved focus performance. In state-of-the-art colour display tubes, a static voltage is applied to the focusing electrode (23). This means that only one focus voltage is available for the entire range of beam currents. In general, due to the fact that the diameter of the electron beams (7, 8, 9) increases as the beam current increases, the focus voltage is a function of this beam current, which itself is determined by the cathode voltage. In this invention, a colour display device (19) is disclosed in which the voltage on the focusing electrode (23) is changed as a function of the cathode voltages, thereby significantly improving the focus performance.
摘要翻译：公开了一种具有改进的聚焦性能的彩色显示装置（19）。在最先进的彩色显像管中，静电压被施加到聚焦电极（23）。这意味着只有一个聚焦电压可用于整个光束电流范围。通常，由于电子束（7,8,9）的直径随着电流的增加而增加，所以聚焦电压是该束电流的函数，其本身由阴极电压决定。在本发明中，公开了一种彩色显示装置（19），其中聚焦电极（23）上的电压根据阴极电压而变化，从而显着提高了聚焦性能。

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