发明名称 |
DETECTION OF INTENDED KEY ACTIVATION ON A MOBILE DEVICE |
摘要 |
A method and device are provided for preventing unintended activation of one or more hard keys on a mobile device. A capacitive sensor senses a capacitance level at a location on the keyboard, to detect whether a hard key is being actuated by a human hand or human skin. If the sensed capacitance level exceeds a key activation capacitance threshold, a key circuit connection is identified as being associated with an intended hard key activation. If the measured capacitance level is within an uncertainty tolerance below the key activation capacitance threshold, a secondary capacitance level is measured at a non-keyboard location. The key circuit connection is identified as being associated with an intended hard key activation when the measured secondary capacitance level exceeds a key activation confirmation threshold. Additional secondary indicators can be obtained based on size and shape capacitance pattern, timing information, and an active application or device state. |
申请公布号 |
CA2720551(A1) |
申请公布日期 |
2011.05.13 |
申请号 |
CA20102720551 |
申请日期 |
2010.11.12 |
申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
WERNER, COLIN MARK;KUHL, LAWRENCE EDWARD;MARUI, KEIZO;CHEN, CHAO;WU, KEN |
分类号 |
H04W88/02;G01R27/26;G01V3/08;H01H13/705 |
主分类号 |
H04W88/02 |
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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