发明名称 |
REMOVABLE TRACKBALL FOR A HANDHELD WIRELESS COMMUNICATION DEVICE |
摘要 |
A handheld wireless communication device cradleable by an user during text entry. A display and key field are located on a front face of the device. The key field includes alphanumeric input keys and menu control keys. Additionally, an user-removable trackball navigation tool is provided on the device. The trackball navigation tool can be releasably snap-engaged or releasably friction-engaged in the body of the device. The removable trackball navigation tool enables the user to independently remove the trackball navigation tool from the device and perform self-maintenance on the device with respect to the navigation tool.
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申请公布号 |
CA2581514(C) |
申请公布日期 |
2012.03.06 |
申请号 |
CA20072581514 |
申请日期 |
2007.03.13 |
申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
CHEN, CHAO;PAPKE, JANA LYNN |
分类号 |
G06F3/033;G06F1/16;H01H13/84;H04W88/02 |
主分类号 |
G06F3/033 |
代理机构 |
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主权项 |
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