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    • 3. 发明授权
    • Device and method for controlling video muting using a microcomputer
    • 使用微电脑控制视频静音的装置和方法
    • US5953004A
    • 1999-09-14
    • US785973
    • 1997-01-22
    • Sung-Yun Cho
    • Sung-Yun Cho
    • H04N3/24G06G1/04
    • H04N3/24
    • A video muting control device using a microcomputer, comprising a video mute key for generating a video mute command upon activation by a user; a microcomputer connected to the video mute key, the microcomputer generating a blanking control signal in response to an input of the video muting command, a preamplifier for receiving RGB video signals, the preamplifier generating an amplified video signal in response to a clamping signal and a contrast control signal, and a video mute circuit for muting a video display in response to the blanking control signal by grounding any one of the RGB video signals, the clamping signal and the contrast control signal.
    • 一种使用微型计算机的视频静噪控制装置,包括用于在用户激活时产生视频静音命令的视频静音键; 微型计算机,连接到视频静音键,微型计算机响应于视频静音命令的输入产生消隐控制信号,用于接收RGB视频信号的前置放大器,前置放大器响应于钳位信号产生放大的视频信号,以及 对比度控制信号,以及视频静音电路,用于通过对RGB视频信号,钳位信号和对比度控制信号中的任何一个进行接地,来响应于消隐控制信号来静音视频显示。
    • 5. 发明授权
    • Magnetic field shielding device in display
    • 磁场屏蔽装置显示
    • US5815361A
    • 1998-09-29
    • US835056
    • 1997-04-03
    • Sung-Yun Cho
    • Sung-Yun Cho
    • H01J29/00H04N9/29H01F13/00
    • H01J29/003H04N9/29H01J2229/0023H01J2229/0053
    • A magnetic field shielding device of a CRT (cathode ray tube) display includes a degaussing coil for preventing a magnetic field, generated by a voltage supplied to a deflection coil of the display, from being emitted from the display. A tilt coil maybe disposed at the middle portion of the degaussing coil so as to surround an electron gun of the cathode ray tube. The top and bottom portions of the degaussing coil are arranged so as to be horizontal. Both sides of the middle portion of the degaussing coil are bent inward so as to approach to each other, and so as to have a predetermined distance therebetween. The shielding device prevents dark color purity from being generated at the lower portion of the display.
    • CRT(阴极射线管)显示器的磁场屏蔽装置包括用于防止由提供给显示器的偏转线圈的电压产生的磁场的消磁线圈从显示器发射。 倾斜线圈可以设置在消磁线圈的中间部分,以围绕阴极射线管的电子枪。 消磁线圈的顶部和底部布置成水平。 消磁线圈的中间部分的两侧向内弯曲以彼此接近,并且在它们之间具有预定的距离。 屏蔽装置防止在显示器的下部产生深色纯度。