发明授权
US4873582A Video signal and method therefor time axis altering circuit used in a
video tape recorder for recording a broadband video signal
失效
用于记录宽带视频信号的录像机中使用的用于时间轴改变电路的视频信号及方法
- 专利标题： Video signal and method therefor time axis altering circuit used in a video tape recorder for recording a broadband video signal
- 专利标题（中）： 用于记录宽带视频信号的录像机中使用的用于时间轴改变电路的视频信号及方法
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申请号： US210167申请日： 1988-06-21
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公开(公告)号： US4873582A公开(公告)日： 1989-10-10
- 发明人: Takashi Furuhata , Hitoaki Owashi , Takayasu Ito , Masakazu Hamaguchi
- 申请人： Takashi Furuhata , Hitoaki Owashi , Takayasu Ito , Masakazu Hamaguchi
- 申请人地址： JPX Tokyo
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX61-74217 19860402
- 主分类号： H04N5/92
- IPC分类号： H04N5/92 ; H04N9/797 ; H04N9/81 ; H04N9/82
摘要：
Disclosed is a magnetic recording-playback apparatus suitable for recording and reproducing a signal including a broad-band composite video signal and a method therefor. The broad-band signal is time-sliced into signals in two channels, and each divided signal is expanded on the time axis so that it is converted into a lower-band signal before being recorded on a magnetic tape. In the time axis expansion process, the vertical blanking signal and/or horizontal blanking signal is not expanded, whereby the divided video signals have a still lower frequency band.