发明名称 |
Caller identification device and method of operation thereof |
摘要 |
A self powered caller identification device (CID) for a cellular telephone system (CTS) includes a receiver, a transmitter and a processor, all of which being adapted to provide access to the content of a data channel and to deny access to the voice services of a voice channel. The receiver is responsive to the data signal in the data channel and the processor is responsive to identify the CID to the CTS. The CID answers a call from the CTS in response to the call being a data signal and fails to answer the call in response to an attempted connection to the voice services of the voice channel. A display at the CID is responsive to the processor to display the content of the data signal thereby identifying the caller to the user of the CID.
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申请公布号 |
US7269412(B2) |
申请公布日期 |
2007.09.11 |
申请号 |
US20030449571 |
申请日期 |
2003.05.29 |
申请人 |
AT&T BLS INTELLECTUAL PROPERTY, INC. |
发明人 |
BACON JAMES;AGHAJANIAN JOHN H. |
分类号 |
H04M3/42;H04M3/436;H04W4/20 |
主分类号 |
H04M3/42 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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