公开(公告)号：EP1658631A2

公开(公告)日：2006-05-24

申请号：EP04786381.6

申请日：2004-08-12

申请人： Thomson Licensing

发明人： COSMA, Pedro

IPC分类号： H01J29/06

CPC分类号： H01J29/06 ,  H01J2229/003

摘要： A cathode ray tube comprising an internal magnetic screen (60) and a frame (40) supporting a shadow mask (3). The screeen is attached to the frame by means of cut-out tabs (63) on the peripheral lip (61) of the screen. The tabs are inserted into openings (62) on the surface of the flange (41) of the frame entering into contact with the screen. Said type of attachment makes it possible to eliminate additional parts and to automatize the attachment of the screen to the frame.

公开(公告)号：EP0580118B1

公开(公告)日：1996-03-27

申请号：EP93111584.4

申请日：1993-07-20

申请人： MITSUBISHI DENKI KABUSHIKI KAISHA ,  TOHOKU GAKUIN UNIVERSITY

发明人： Haga, Akira ,  Nasuno, Hiroshi ,  Yamane, Keisuke, c/o Mitsubishi Denki K.K.

IPC分类号： H01J29/00

CPC分类号： H01J29/003 ,  H01J29/06 ,  H01J2229/003

公开(公告)号：EP0660364A1

公开(公告)日：1995-06-28

申请号：EP94203527.0

申请日：1994-12-05

申请人： PHILIPS ELECTRONICS N.V.

发明人： Penninga, Johannes ,  Jamar, Jacobus Hubertus Theodoor

IPC分类号： H01J29/00

CPC分类号： H01J29/003 ,  H01J2229/003

摘要： A colour display device comprising a cathode ray tube and a deflection unit. The display device includes a compensation coil or a compensation-coil system, for example on the outside of the yoke of the deflection unit, by means of which frame errors and convergence errors caused by the earth's magnetic field can be compensated for.

摘要翻译： 一种彩色显示装置，包括阴极射线管和偏转单元。 显示装置包括补偿线圈或补偿线圈系统，例如在偏转单元的磁轭的外侧，由此可以补偿由地球磁场引起的帧误差和会聚误差。

公开(公告)号：EP0580670A1

公开(公告)日：1994-02-02

申请号：EP92908289.0

申请日：1992-04-16

申请人： RANK BRIMAR LIMITED

发明人： ETHERINGTON, David, George 14 Piethorne Close ,  BARTEN, Peter

IPC分类号： H01J29

CPC分类号： H01J29/76 ,  H01J29/003 ,  H01J29/867 ,  H01J2229/003

摘要： Tube à rayons cathodiques de couleur (10) portant une bobine (20a) faisant partie d'un collier de déviation (20) et enfermé dans un blindage de mumétal (30). Afin de réduire les effets du blindage (30) sur la déviation exercée par la bobine (20a), un blindage localisé (60a, 60b) recouvre au moins les extrémités (20c) de la bobine (20a) et dérive ou limite les champs magnétiques qu'elle crée, de manière que le blindage enveloppant (30) ne perturbe pas lesdits champs magnétiques.

摘要翻译： 阴极射线管（10）承载形成偏转轴环（20）的一部分的线圈（20a），并且被包围在一个金属屏蔽（30）中。 为了减小屏蔽件30对由线圈20a施加的偏转的影响，局部屏蔽件60a，60b至少覆盖线圈20a的端部20c，并且漂移或限制磁场 它产生，使得环绕屏蔽（30）不会干扰所述磁场。

公开(公告)号：EP0447139A3

公开(公告)日：1992-01-22

申请号：EP91301967.5

申请日：1991-03-08

申请人： HITACHI, LTD.

发明人： Majima, Kazuo ,  Sano, Tohru

IPC分类号： H01J29/06

CPC分类号： H01J29/003 ,  H01J2229/003 ,  H01J2229/0733

摘要： In a shadow mask type color cathode-ray tube, the coercive force of the shadow mask frame (8), internal magnetic shield (7), shadow mask (6) and reinforcing band is limited to a specific value when they are magnetized at specific magnetic field, in order to eliminate any adverse influences of environmental magnetic field.

公开(公告)号：EP0421592A2

公开(公告)日：1991-04-10

申请号：EP90309021.5

申请日：1990-08-16

申请人： Hughes Aircraft Company

发明人： Bentley, Robert M.

IPC分类号： H01J29/00 ,  H04N9/29

CPC分类号： H04N9/29 ,  H01J29/003 ,  H01J2229/003 ,  H01J2229/0038

摘要： A system for improving the operation of a cathode ray tube (CRT) is disclosed whereby interference caused by external magnetic fields is mitigated. The system comprises a CRT having a CRT magnetic shield housing and at least one electromagnetic field sensor (11) disposed adjacent to the inner surface (31) of the CRT housing. Sensors (11) form to generate a reference magnetic field and to generate a sensor output signal (29) in response to the detection of both the reference field and an external field as sensed within the housing. A bucking field coil (41) drive circuit is provided in electrical communication with the field sensor (11), the drive circuit being operative to generate a bucking field coil (41) drive signal responsive to the field sensor (11) output signal (29). A bucking field coil (41) is disposed circumferentially about the CRT and is driven by the bucking field coil (41) drive signal. The bucking field coil (41) generates a bucking electromagnetic field in opposition to the sensed external magnetic field (39), thereby opposing and reducing the degrading effects of the external magnetic field on the CRT display.

摘要翻译： 公开了一种用于改善阴极射线管（CRT）的操作的系统，由此减轻了由外部磁场引起的干扰。 该系统包括具有CRT磁屏蔽壳体和邻近CRT壳体的内表面（31）设置的至少一个电磁场传感器（11）的CRT。 传感器（11）形成以产生参考磁场并且响应于在壳体内感测到的参考场和外部场的两者的检测而产生传感器输出信号（29）。 提供与励磁传感器（11）电连通的搭扣励磁线圈（41）驱动电路，所述驱动电路可操作以响应于场传感器（11）的输出信号（29）产生抵抗励磁线圈（41）的驱动信号 ）。 降压场线圈（41）围绕CRT周向设置，并由屈曲场线圈（41）驱动信号驱动。 抵消励磁线圈（41）产生与所感测的外部磁场（39）相对的降压电磁场，从而相反并减少外部磁场对CRT显示器的降级效应。

公开(公告)号：EP0396381A2

公开(公告)日：1990-11-07

申请号：EP90304707.4

申请日：1990-05-01

申请人： CONRAC SCD, INC.

发明人： Buhler, Frederick T.

IPC分类号： H04N9/29

CPC分类号： H01J29/003 ,  H01J2229/003 ,  H01J2229/0038 ,  H01J2229/0053 ,  H04N9/29

摘要： A method and apparatus for nulling the magnetic field within a specified volume in the presence of an external ambient field by generating compensating magnetic fields at a number of locations 13 and 15 around the volume, sensing the field at 20 in the volume and controlling the value of the compensating fields in a closed loop system to null the field within the volume.

摘要翻译： 一种用于在存在外部环境场的情况下使指定体积内的磁场归零的方法和装置，通过在体积周围的多个位置13和15处产生补偿磁场，感测体积中的20处的磁场并控制该值 的闭环系统中的补偿字段，以使该卷内的字段为空。

公开(公告)号：EP0314671A1

公开(公告)日：1989-05-10

申请号：EP87901618.0

申请日：1987-02-19

申请人： HANTAREX S.p.A.

发明人： MEONI, Luciano

IPC分类号： H01J29

CPC分类号： H01J29/003 ,  H01J2229/0015 ,  H01J2229/003

摘要： Le dispositif décrit est conçu avec au moins deux enroulements de fil conducteur en cuivre (7, 8, 9 et 10), qui est placé près du collier de déviation (1, 2, 3 et 4) à travers lequel passe le courant responsable de cette même déviation et dont la forme est conçue de façon à former une configuration de champ magnétique aussi similaire que possible et contraire à la configuration non désirée. Une réduction très prononcée du champ magnétique émis par l'extérieur du dispositif est ainsi obtenue.

公开(公告)号：EP1304716A4

公开(公告)日：2008-01-09

申请号：EP02705166

申请日：2002-03-14

申请人： MATSUSHITA ELECTRIC IND CO LTD

发明人： YAMAUCHI NAOKI ,  IGUCHI HIDEO ,  OMAE HIDEHARU ,  KUMEI YOSHIMI ,  OZAWA TETSURO ,  KANNAN YOKO

IPC分类号： H01J29/06 ,  H01J29/18

CPC分类号： H01J29/185 ,  H01J29/06 ,  H01J2229/003 ,  H01J2229/863 ,  H01J2229/8634

摘要： An image receiving tube device comprising a panel formed with a fluorescent screen, a funnel integrated with the panel, an electron gun installed in the funnel, a magnetic shield (1) for shielding electron beams (5) emitted from the electron gun from the external magnetic field, and a frame (2) holding the magnetic shield (1), wherein the magnetic shield (1) has a bend (20) that is bent toward the tube axis in the junction with the frame (2), and the thickness (T) of the bend (20) at the edge on the tube axis side is 0.08 mm or less. Reducing the thickness (T) reduces the number of electron beams reflected by an end surface (11) to reach the screen without being shielded by the frame (2), thus making it possible to suppress halation that tends to occur in an image receiving tube device having a high deflection angle.

公开(公告)号：EP1324369A3

公开(公告)日：2005-09-28

申请号：EP02028573.0

申请日：2002-12-20

申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

发明人： Nakatera, Shigeo ,  Yonezawa, Takayuki ,  Mikami, Tomohisa ,  Ozama, Tetsuro

IPC分类号： H01J29/00

CPC分类号： H01J29/06 ,  H01J2229/003 ,  H01J2229/0053

摘要： A color cathode ray tube having a striped phosphor screen is provided, in which color displacements due to the tube axis (Z-axis) component of the terrestrial magnetism can be decreased at low cost. A positive temperature coefficient thermistor 13 and a degaussing coil 11 are connected in series to an AC power source (AC 100V) 12 via a switch SW. A rectifier/smoothing circuit 14 is provided in parallel to the positive temperature coefficient thermistor 13. When the switch SW is turned on, an ordinary degaussing process due to the AC attenuating magnetic field interlinked to the degaussing coil 11 is performed, and the DC magnetic field in the Y-axis direction interlinked to the degaussing coil 11 decreases the influence of the terrestrial magnetism in the tube axis direction (Z-axis direction).