System converter device for converting a video signal having a certain
number of scan lines to a video signal having a lesser number of scan
lines
    42.
    发明授权
    System converter device for converting a video signal having a certain number of scan lines to a video signal having a lesser number of scan lines 失效
    用于将具有一定数目的扫描线的视频信号转换成具有较少数量扫描线的视频信号的系统转换器装置

    公开(公告)号:US5031040A

    公开(公告)日:1991-07-09

    申请号:US518525

    申请日:1990-05-03

    申请人: Masaki Maruyama

    发明人: Masaki Maruyama

    IPC分类号: H04N7/01

    CPC分类号: H04N7/0125

    摘要: A system converter device converts a video signal based on the MUSE system to a video signal based on the NTSC system. In the system converter device, two lines of scanning line signal based on the NTSC system are generated from three adjacent same numbered-type field lines of scanning line data included in the MUSE signal. The generated time-discontinuous scanning line signal is made continuous by an expanding circuit. The video information included in the MUSE signal is not lost by conversion, became a video signal based on the NTSC system is generated from all the scanning line signals forming 1 frame included in the MUSE signal. Therefore, it is possible to display the complete transmitted video on the display screen.

    摘要翻译: 系统转换器装置将基于MUSE系统的视频信号转换为基于NTSC系统的视频信号。 在系统转换器装置中,从包括在MUSE信号中的扫描线数据的三个相邻相同的编号型场线产生基于NTSC系统的两行扫描线信号。 所产生的时间不连续的扫描线信号由扩展电路连续。 包含在MUSE信号中的视频信息不会因转换而丢失,成为基于NTSC制式的视频信号是从形成MUSE信号中包括的1帧的所有扫描线信号产生的。 因此,可以在显示屏上显示完整的传输视频。