发明名称 ELECTRONIC LUMINESCENCE KEYBOARD SYSTEM FOR A PORTABLE DEVICE
摘要 An electronic luminescence keyboard system (10) in a portable device which includes a plurality of keypads (12) and an illuminated panel (18) which displays information responsive to the pressing of at least one of the plurality of keypads (12) is disclosed. The improvement comprises a conductor element (26) for conducting a portion of the light from the illuminated panel (18) and illuminator element coupled to the conductor element (26) for illuminating the plurality of keypads (12) with the portion of the light from the illuminated panel (18) thereby allowing for observation of keypads (12) on the keyboard (14) when the surrounding area is dimly lit. The ELK system (10) has no effect on the power consumption on the portable device. In an embodiment the ELK system (10) provides for backlighting the keyboard (14). In a second embodiment the ELK system (10) provides light to a top portion of the keypads (12).
申请公布号 CA2227067(A1) 申请公布日期 1997.02.06
申请号 CA19962227067 申请日期 1996.07.15
申请人 DECKER, MARK RANDALL 发明人 DECKER, MARK RANDALL
分类号 F21V33/00;G06F1/16;G06F3/02;H01H13/70;(IPC1-7):G06F3/023 主分类号 F21V33/00
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