| 发明名称 |
Method and system for inputting DTMF tones from a smart phone keyboard |
| 摘要 |
<p>A smart phone is provided. The smart phone comprises a dual-tone multi-frequency (DTMF) key configured such that when the DTMF key is activated and when a key on a keypad on the smart phone is selected, the smart phone generates and transmits a DTMF tone corresponding to the selected key.</p> |
| 申请公布号 |
EP2432199(A1) |
申请公布日期 |
2012.03.21 |
| 申请号 |
EP20100177377 |
申请日期 |
2010.09.17 |
| 申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
ZHENG, YONGQIAN |
| 分类号 |
H04M1/50;G06F3/048;H04M1/725 |
主分类号 |
H04M1/50 |
| 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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