发明名称 |
Methods and apparatus for controlling power to electrical circuitry of a wireless communication device having a subscriber identity module (SIM) interface |
摘要 |
Methods and apparatus for controlling power to electrical circuitry of a wireless communication device having a Subscriber Identity Module (SIM) interface are described. In one illustrative embodiment, a method includes the acts of receiving a power down signal from a user interface of the wireless communication device; powering down radio frequency (RF) transceiver circuitry of the wireless communication device in response to the power down signal; and maintaining power to a SIM interface of the wireless communication device while the RF transceiver circuitry is powered down from the power down signal. A visual display of the device is capable of displaying information (e.g. address book information) from a SIM card while the RF transceiver circuitry is powered down from the power down signal.
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申请公布号 |
US2004121793(A1) |
申请公布日期 |
2004.06.24 |
申请号 |
US20030427015 |
申请日期 |
2003.04.30 |
申请人 |
WEIGELE INGO W.;DEU-NGOC JOSEPH T. |
发明人 |
WEIGELE INGO W.;DEU-NGOC JOSEPH T. |
分类号 |
G07F7/10;H04B7/005;H04W52/02;H04W52/28;(IPC1-7):H04B7/00;H04Q7/20 |
主分类号 |
G07F7/10 |
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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