发明授权
- 专利标题： Tuning system for CATV terminal
- 专利标题（中）： 有线电视终端调谐系统
-
申请号： US74486申请日： 1979-09-11
-
公开(公告)号： US4317215A公开(公告)日： 1982-02-23
- 发明人: Toshio Tabata , Hiroki Uemura
- 申请人： Toshio Tabata , Hiroki Uemura
- 申请人地址： JPX Tokyo
- 专利权人： Pioneer Electronic Corporation
- 当前专利权人： Pioneer Electronic Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX53-112832 19780913
- 主分类号： H04N7/16
- IPC分类号： H04N7/16 ; H04N7/173 ; H04H1/04 ; H04N7/10
摘要：
In a CATV system, channel identifying data is incorporated in each transmitted channel, and subscriber terminals return such data to the CATV center to indicate the channel actually being received. Further, the channel identifying data is compared to the channel selected, and when a proper comparison exists a sweep voltage is held at a predetermined level for the particular channel, to control frequency conversion at the terminal.
公开/授权文献
- US6008515A Stacked capacitor having improved charge storage capacity 公开/授权日：1999-12-28