发明授权
- 专利标题: Hybrid telephony communication system
- 专利标题(中): 混合电话通信系统
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申请号: US102944申请日: 1987-09-30
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公开(公告)号: US4775996A公开(公告)日: 1988-10-04
- 发明人: Victor F. Emerson , Cecil H. Bannister , Mahshad Koohgoli
- 申请人: Victor F. Emerson , Cecil H. Bannister , Mahshad Koohgoli
- 申请人地址: CAX Montreal
- 专利权人: Northern Telecom Limited
- 当前专利权人: Northern Telecom Limited
- 当前专利权人地址: CAX Montreal
- 主分类号: H04M1/737
- IPC分类号: H04M1/737 ; H04Q7/04
摘要:
A wireless telephony system comprising a base station and at least one portable device. The base station employs a ratio frequency (RF) receiver and an optical transmitter. The portable device employs an optical receiver and an RF transmitter.
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