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    • 23. 发明专利
    • Deflection yoke
    • JP2004040158A
    • 2004-02-05
    • JP2002190226
    • 2002-06-28
    • Victor Co Of Japan Ltd日本ビクター株式会社
    • YOKOZUKA KATSUHISAASAYAMA MANABU
    • H01J29/76H01J29/07H04N9/28
    • PROBLEM TO BE SOLVED: To provide a deflection yoke capable of correcting a YH cross misconvergence without causing VCR narrow misconvergence.
      SOLUTION: A correction circuit 15A consists of: first to fourth magnetic field correction coils 1 to 4; and a 3-terminal variable resistor 20, and is configured such that a series circuit comprising the first and the second magnetic field correction coils 1, 2 is connected in parallel with a series circuit of the fourth and the third magnetic field correction coils 4, 3 connected to two respective fixed terminals of the 3-terminal variable resistor 20, the moving terminal T1 is connected to a connecting point P of the first and second magnetic field correction coils 1, 2, vertical deflection coils 12, 13 are connected in series with the first and second magnetic field correction coils 1, 2, the first and third magnetic field correction coils 1, 3 are wound on a first core 14A, the second and fourth magnetic field correction coils 2, 4 are wound on a second core 14B, and the first and second cores 14A, 14B are placed opposite to each other while sandwiching a neck part 51c.
      COPYRIGHT: (C)2004,JPO
    • 26. 发明专利
    • Video display apparatus
    • 视频显示设备
    • JP2003283964A
    • 2003-10-03
    • JP2002086911
    • 2002-03-26
    • Olympus Optical Co Ltdオリンパス光学工業株式会社
    • ADACHI YUTAKA
    • H04N5/74G09G5/00G09G5/02G09G5/36H04N9/28H04N9/64H04N17/02
    • PROBLEM TO BE SOLVED: To provide a video display apparatus capable of performing a variety of image correction processing.
      SOLUTION: A video display apparatus comprising an image correction unit 15 for performing color correction, brightness correction, trapezoidal distortion correction and other correction processing on video information to be projected input to a projection image input unit 16, a projector 11 for projecting on a screen a video based on the video information subjected to correction processing in the image correction unit 15, and a camera 17 for shooting the video on the screen projected by the projector 11. The projector 11 projects an image of a test chart, and the camera 17 shoots the image of the projected test chart. A control unit 21 obtains a correction amount by comparing the video information of the test chart shot by the camera 17 with the image information of the test chart projected on the projector 11. Correction processing is performed on the video information to be projected based on the correction amount.
      COPYRIGHT: (C)2004,JPO
    • 要解决的问题:提供能够进行各种图像校正处理的视频显示装置。 解决方案:一种视频显示装置,包括用于对投影图像输入单元16投影的视频信息进行色彩校正,亮度校正,梯形失真校正和其他校正处理的图像校正单元15,投影仪11,用于投影 在屏幕上,基于在图像校正单元15中进行了校正处理的视频信息的视频以及用于在由投影仪11投影的屏幕上拍摄视频的照相机17.投影仪11投影测试图的图像,并且 相机17拍摄投影测试图的图像。 控制单元21通过将由照相机17拍摄的测试图的视频信息与投影在投影仪11上的测试图的图像信息进行比较来获得校正量。对要投影的视频信息进行校正处理 校正量。 版权所有(C)2004,JPO