发明名称 APPARATUS AND METHOD FOR TRANSMITTING A SIGNAL
摘要 A method and apparatus for initiating a telecommunications call. A plurality of beacons (102,) are geographically disposed in a telecommunications system (100). Each beacon (102n) radiates an electromagnetic carrier that is modulated with an identifying address (e.g., a telephone number, an Internet address) for an associated terminal. An identifying signal is stored in a memory (206). A controller (208) modulates a carrier with the identifying signal and a transmission element (210) transmits the carrier to allow a communications terminal (104) to initiate a call to the associated communications terminal (114, 116). A wireless terminal (104a) includes a directional receiver (204). To initiate a call, a user points directional receiver (204) at a beacon. The directional receiver (204) receives the electromagnetic carrier and the wireless terminal recovers the identifying address. Wireless terminal (104) then uses the identifying address to initiates a call, in well-known fashion, to the communications terminal associated with the identifying address.
申请公布号 CA2191805(A1) 申请公布日期 1997.06.16
申请号 CA19962191805 申请日期 1996.12.02
申请人 AT&T CORP. 发明人 DEMONT, JASON PAUL;OTTESEN, KENNETH
分类号 H04M3/42;H04W76/02;H04W84/18;H04W88/02;(IPC1-7):H04Q7/38 主分类号 H04M3/42
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