发明授权
- 专利标题： Data communication apparatus connectable with a plurality of telephone sets and a telephone line
- 专利标题（中）： 可与多个电话机和电话线连接的数据通信装置
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申请号： US702388申请日： 1991-05-20
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公开(公告)号： US5317629A公开(公告)日： 1994-05-31
- 发明人: Tsunehiro Watanabe
- 申请人： Tsunehiro Watanabe
- 申请人地址： JPX Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX2-129122 19900521; JPX2-144405 19900604
- 主分类号： H04M1/723
- IPC分类号： H04M1/723 ; H04M11/06 ; H04N1/327 ; H04M11/00
摘要：
A communication apparatus selectively uses plural telephone sets and a line. The communication apparatus includes a circuit for detecting a calling signal from a line, and a control circuit for allowing a specific telephone set to receive an incoming call and ring among plural telephone sets on receipt of an incoming call.
公开/授权文献
- US5712409A Naphthyl and ether chain-containing carboxyl derivatives 公开/授权日：1998-01-27
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