发明名称 |
Mobile wireless communications device with reduced interference from the keyboard into the radio receiver |
摘要 |
A mobile wireless communications device includes a housing and circuit board carried by the housing. Radio frequency (RF) circuitry carried by the circuit board forms a transmitter and receiver. A processor is carried by the circuit board and operative with the RF circuitry. A keyboard connector is mounted on the circuit board. A plurality of Key_Out and Key_In connection lines are carried by the circuit board and connect the keyboard connector and processor. A keypad is carried by the housing and operatively connected to the keyboard connector. A filter is operative with each connection line for limiting degradation in receiver sensitivity.
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申请公布号 |
US7363063(B2) |
申请公布日期 |
2008.04.22 |
申请号 |
US20050064701 |
申请日期 |
2005.02.24 |
申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
ZHU LIZHONG;CORRIGAN MICHAEL;JARMUSZEWSKI PERRY |
分类号 |
H04M1/00;H04B1/10 |
主分类号 |
H04M1/00 |
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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