发明授权
- 专利标题： Communication system
- 专利标题（中）： 通讯系统
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申请号： US199277申请日： 1988-06-02
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公开(公告)号： US4885797A公开(公告)日： 1989-12-05
- 发明人: Terence H. Leather , Frank R. Naylor , Paul S. Gradwell
- 申请人： Terence H. Leather , Frank R. Naylor , Paul S. Gradwell
- 申请人地址： GB2 Blackpool
- 专利权人： Leather; Terence H.
- 当前专利权人： Leather; Terence H.
- 当前专利权人地址： GB2 Blackpool
- 优先权： GBX8530772 19851213
- 主分类号： A63B71/06
- IPC分类号： A63B71/06 ; A42B1/12 ; A63B69/00 ; A63B69/12 ; H04B5/00
摘要：
An audio signal and a selected one of a plurality of sub-audio tones are transmitted to a plurality of receiving each being capable of being conditioned by first, second or third selected sub-audio tones so that either all receivers, or only a select group of all of the receivers or only an intended group are the receivers accept the transmitted audio signal, there being as many selectable second sub-audio signals as there are groups and as many selectable third sub-audio signals as there are receivers.
公开/授权文献
- US5449875A Method of controlling spot welding robot 公开/授权日：1995-09-12
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