发明名称 |
AUTOMATIC KEYPAD BACKLIGHT ADJUSTMENT ON A MOBILE HANDHELD ELECTRONIC DEVICE |
摘要 |
A method is set forth for automatically adjusting keypad brightness on a mobile electronic device having a light sensor, a keypad and a backlight for said keypad, comprising obtaining light level samples from the light sensor, turning the backlight from off to on in the event a current light level sample is less than a threshold value below which backlight illumination becomes necessary in order to read the keypad, and from off to on after a predetermined time period in the event the current light level sample is greater than the threshold value. |
申请公布号 |
CA2692998(C) |
申请公布日期 |
2013.12.24 |
申请号 |
CA20102692998 |
申请日期 |
2010.02.11 |
申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
BROGA, ANTANAS MATTHEW;CRUGNALE, THOMAS JAMES |
分类号 |
H01H13/83;G06F3/02;H04W88/02;H05B37/02 |
主分类号 |
H01H13/83 |
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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