发明申请
US20070267497A1 MULTI-FUNCTION KEYPAD USING COLORED LIGHT SOURCES AND OPTICAL FILMS 有权
使用彩色光源和光学膜的多功能键盘

MULTI-FUNCTION KEYPAD USING COLORED LIGHT SOURCES AND OPTICAL FILMS
摘要:
A multi-function key system for use with an electronic device can include at least one key (230) and an optical film (255) optically coupled to the key. The optical film (255) can include a first optical filter (260) corresponding to a first color of light and a second optical filter (265) corresponding to a second color of light. The multi-function key system further can include a first light source (275), disposed below the key, that emits the first color of light and a second light source (280), disposed below the key, that emits the second color of light. A controller (215) can selectively activate the first light source (275) or second light source (280) responsive to an event detected within the electronic device.
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