Letterbox television system
    2.
    发明授权
    Letterbox television system 失效
    信箱电视系统

    公开(公告)号:US5534932A

    公开(公告)日:1996-07-09

    申请号:US342683

    申请日:1994-11-21

    CPC分类号: H04N7/007 H04N11/167

    摘要: In a method of transmitting an extended television signal comprising a wide aspect ratio picture between two horizontal bars so as to form a standard aspect ratio picture, in which vertical resolution enhancement signals are transmitted to improve the vertical resolution upon display on an enhanced television receiver, this method comprises the steps of separating the vertical resolution enhancement signals into a low-frequency part (DC-1.5 MHz) and a high-frequency part (1.2-2.9 MHz); transmitting the high-frequency part during the horizontal bars, which high-frequency part is not modulated onto a subcarrier; and transmitting the low-frequency part during the horizontal bars after modulation onto a subcarrier (4.43 MHz).

    摘要翻译: 在一种在两个水平条之间发送包括宽纵横比图像的扩展电视信号的方法中,以便形成标准宽高比图像,其中在增强型电视接收机上显示时发送垂直分辨率增强信号以提高垂直分辨率, 该方法包括将垂直分辨率增强信号分离成低频部分(DC-1.5MHz)和高频部分(1.2-2.9MHz)的步骤; 在高频部分未被调制到子载波上的水平条中发送高频部分; 并且在调制之后的水平条中将低频部分发射到子载波(4.43MHz)上。

    Video processing system featuring a choice between inter and intra field
processing based on motion in chrominance signals
    3.
    发明授权
    Video processing system featuring a choice between inter and intra field processing based on motion in chrominance signals 失效
    视频处理系统具有基于色度信号中的运动的帧间和场内处理之间的选择

    公开(公告)号:US5469227A

    公开(公告)日:1995-11-21

    申请号:US148144

    申请日:1993-11-04

    CPC分类号: H04N9/78 H04N5/144

    摘要: In a video processing system having an intra-field processing mode which allows a better luminance-chrominance separation, and an inter-field processing mode which allows a better performance in the presence of motion in the color signals, wherein a motion-dependent choice is made between these modes, chrominance-difference signals (Ud, Vd) are derived from chrominance signals (U, V), and a first linear combination of the chrominance-difference signals (Ud', Vd) is derived when the V chrominance-difference signal (Vd) exceeds the U chrominance-difference signal (Ud'), and a second linear combination of the chrominance-difference signals (Ud', Vd) is derived in the opposite case, to obtain a motion signal (M) for the motion-dependent choice.

    摘要翻译: 在具有允许更好的亮度 - 色度分离的场内处理模式的视频处理系统中,以及允许在颜色信号中存在运动的更好性能的场间处理模式,其中依赖于运动的选择是 在这些模式之间,从色度信号(U,V)导出色度差信号(Ud,Vd),并且当色度差信号(Ud',Vd)被导出时,导出色度差信号(Ud',Vd)的第一线性组合 信号(Vd)超过U色差信号(Ud'),并且在相反的情况下导出色度差信号(Ud',Vd)的第二线性组合,以获得用于 运动依赖选择。