发明名称 |
Digital cordless telephone set operated under burst synchronization |
摘要 |
A cordless telephone set comprises a base unit and a handset unit connected by a radio frequency (RF) link which is established by digital burst data transmission and is synchronized by a unique word which is included in the digital burst data. The radio transmission signal is not continuous and it requires the synchronization. The unique word is detected by the unique word detecting means and is used to establish the burst data synchronization. The unite word consists of frequency channel information and fixed unite data. By using this information, the base unit and the handset unit are prevented from trying to establish a radio link at incorrect frequency when a spurious signal, not intended for the base unit and/or handset unit is erroneously received.
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申请公布号 |
US5434905(A) |
申请公布日期 |
1995.07.18 |
申请号 |
US19930159661 |
申请日期 |
1993.11.30 |
申请人 |
UNIDEN CORPORATION |
发明人 |
MAEDA, KAZUO;FUJINO, MASAYASU;YANG, JUN;TANAKA, KIYOSHI |
分类号 |
H04B7/26;H04L7/04;H04M1/725;H04W56/00;H04W72/04;H04W84/16;(IPC1-7):H04Q7/22;H04M11/00 |
主分类号 |
H04B7/26 |
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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