Apparatus and method for combining digital and analog television signals
    2.
    发明授权
    Apparatus and method for combining digital and analog television signals 失效
    用于组合数字和模拟电视信号的装置和方法

    公开(公告)号:US06278498B1

    公开(公告)日:2001-08-21

    申请号:US09053337

    申请日:1998-04-01

    申请人: David J. Neff

    发明人: David J. Neff

    IPC分类号: H04N538

    CPC分类号: H04N7/066 H04N5/38

    摘要: An adjacent channel combiner combines an analog television channel with an upper adjacent digital television channel using practical filter designs. An aural signal of the analog television channel is combined after both a visual signal and a digital signal have been combined. A directional filter combines the visual and digital signals and a diplexer or other means is used for combining the aural signal with the combined visual and digital signal.

    摘要翻译: 相邻信道组合器使用实际的滤波器设计将模拟电视频道与上邻近的数字电视频道组合。 在视觉信号和数字信号已经组合之后,组合模拟电视频道的听觉信号。 方向滤波器组合视觉和数字信号,并且使用双工器或其他装置将听觉信号与组合的视觉和数字信号组合。