公开(公告)号：US4185301A

公开(公告)日：1980-01-22

申请号：US910872

申请日：1978-05-30

申请人： Katsumi Mitsuda ,  Katsuhiko Yamamoto ,  Katsumi Adachi ,  Susumu Tsujihara ,  Taiichi Saeki ,  Minoru Takeda

发明人： Katsumi Mitsuda ,  Katsuhiko Yamamoto ,  Katsumi Adachi ,  Susumu Tsujihara ,  Taiichi Saeki ,  Minoru Takeda

IPC分类号： H04N3/32 ,  H04N5/68

CPC分类号： H04N3/32

摘要： A system for compensating image contour by modulating a scanning velocity in accordance with a video signal is disclosed, in which a mean current dissipated in a driving power amplifier is detected to control a gain of an amplifier in a preceding stage for suppressing the increase of power dissipation in the power amplifier when a video signal having many noises is received. The preceding stage amplifier is provided with a saturation characteristic to enhance the effect of contour compensation at a small amplitude signal and eliminate over compensation of image contour at a large amplitude signal. The combination of the saturation characteristic and the gain control further enhances the effect of suppression of power dissipation.

摘要翻译： 公开了一种通过根据视频信号调制扫描速度来补偿图像轮廓的系统，其中检测到在驱动功率放大器中消耗的平均电流以控制前级中的放大器的增益，以抑制功率的增加 当接收到具有许多噪声的视频信号时，功率放大器中的耗散。 前级放大器具有饱和特性，以增强在小振幅信号下轮廓补偿的影响，并消除大幅度信号对图像轮廓的过度补偿。 饱和特性和增益控制的组合进一步增强了功耗的抑制效果。

公开(公告)号：US06393889B2

公开(公告)日：2002-05-28

申请号：US09854741

申请日：2001-05-14

申请人： Katsumi Mitsuda ,  Hiroo Terada

发明人： Katsumi Mitsuda ,  Hiroo Terada

IPC分类号： B21D2226

CPC分类号： H01J29/07 ,  H01J2229/0788

摘要： A color cathode ray tube comprises (i) a glass bulb comprising a substantially rectangular panel, on which phosphors of a plurality of colors are arranged, a funnel that is connected to a rear side of the panel, and a neck portion formed at a rear side of the funnel, in which an in-line electron gun for emitting an electron beam is arranged; (ii) a substantially rectangular shadow mask having a plurality of apertures that are arranged in correspondence with the phosphors on the panel; and (iii) a substantially rectangular mask frame having a wall portion that supports opposing skirt portions of the shadow mask. The surface of the shadow mask with the apertures is convex towards the panel. A central portion of the opposing skirt portion is convex in a direction of the tube axis on the side of the electron gun. Processing warps such as wrinkles in the skirt portions of the shadow mask are avoided, and a color cathode ray tube with good color rendition is obtained.

摘要翻译： 一种彩色阴极射线管，包括：（i）玻璃灯泡，包括大致矩形的面板，多个颜色的荧光体布置在其上，连接到面板的后侧的漏斗和形成在后面的颈部 漏斗的一侧，其中布置有用于发射电子束的直列电子枪; （ii）基本上矩形的荫罩，具有与所述面板上的荧光体对应地布置的多个孔; 和（iii）基本上矩形的荫罩框架，其具有支撑荫罩相对的裙部的壁部分。 具有孔的荫罩表面朝向面板凸出。 相对的裙部的中心部分在电子枪一侧的管轴方向上是凸的。 避免了荫罩的裙部的皱纹等加工翘曲，得到色彩再现的彩色阴极射线管。

公开(公告)号：US06388371B1

公开(公告)日：2002-05-14

申请号：US09304247

申请日：1999-05-03

申请人： Katsumi Mitsuda ,  Hiroo Terada

发明人： Katsumi Mitsuda ,  Hiroo Terada

IPC分类号： H01J2907

CPC分类号： H01J29/07 ,  H01J2229/0788

摘要： A color cathode ray tube comprises (i) a glass bulb comprising a substantially rectangular panel, on which phosphors of a plurality of colors are arranged, a funnel that is connected to a rear side of the panel, and a neck portion formed at a rear side of the funnel, in which an in-line electron gun for emitting an electron beam is arranged; (ii) a substantially rectangular shadow mask having a plurality of apertures that are arranged in correspondence with the phosphors on the panel; and (iii) a substantially rectangular mask frame having a wall portion that supports opposing skirt portions of the shadow mask. The surface of the shadow mask with the apertures is convex towards the panel. A central portion of the opposing skirt portion is convex in a direction of the tube axis on the side of the electron gun. Processing warps such as wrinkles in the skirt portions of the shadow mask are avoided, and a color cathode ray tube with good color rendition is obtained.