发明授权
- 专利标题: Channel selection type radio transmission apparatus
- 专利标题(中): 信道选择型无线发送装置
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申请号: US719989申请日: 1996-09-25
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公开(公告)号: US5953045A公开(公告)日: 1999-09-14
- 发明人: Yasuo Tanishima
- 申请人: Yasuo Tanishima
- 申请人地址: JPX Kanagawa
- 专利权人: Fujitsu Limited
- 当前专利权人: Fujitsu Limited
- 当前专利权人地址: JPX Kanagawa
- 优先权: JPX8-067808 19960325
- 主分类号: H04J1/00
- IPC分类号: H04J1/00 ; H04N7/16 ; H04N7/20 ; H04N21/2385 ; H04N7/173
摘要:
A cable television network for transmitting video signals to subscribers through cables, comprising a video channel selection type radio transmission apparatus on a cable branch side in the network and a video channel selection type radio reception apparatus on a subscriber side. The video channel selection type radio transmission apparatus includes a channel selector for selecting a video signal for a channel designated by a channel selection signal which is transmitted from the subscriber. Also included are a frequency converter for converting the frequency of the selected video signal to a predetermined radio frequency and transmitting the video signal, and a receiver for the channel selection signal transmitted from the subscriber, and a controller of the video signal selecting operation of the channel selector. The radio reception apparatus includes a receiver for a video signal transmitted from the radio transmission apparatus, converting the received video signal to a predetermined frequency and transmitting the video signal to a television receiver of the subscriber, and a radio wave transmitter for transmitting the channel selection signal for designating the channel selected by the subscriber.
公开/授权文献
- US5157945A Article of jewelry and methods 公开/授权日:1992-10-27
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