发明申请
- 专利标题： AUTOMATIC KEYPAD BACKLIGHT ADJUSTMENT ON A MOBILE HANDHELD ELECTRONIC DEVICE
- 专利标题（中）： 自动键盘背光调整在移动手持电子设备上
-
申请号： US12570244申请日： 2009-09-30
-
公开(公告)号： US20110074690A1公开(公告)日： 2011-03-31
- 发明人: Matthew BROGA , Thomas James Crugnale
- 申请人： Matthew BROGA , Thomas James Crugnale
- 申请人地址： CA Waterloo
- 专利权人： Research In Motion Limited
- 当前专利权人： Research In Motion Limited
- 当前专利权人地址： CA Waterloo
- 主分类号： G06F3/02
- IPC分类号： G06F3/02
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.