Invention Grant
- Patent Title: Automatic keypad backlight adjustment on a mobile handheld electronic device
- Patent Title (中): 移动手持电子设备上的自动键盘背光调节
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Application No.: US12570244Application Date: 2009-09-30
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Publication No.: US08363015B2Publication Date: 2013-01-29
- Inventor: Matthew Broga , Thomas James Crugnale
- Applicant: Matthew Broga , Thomas James Crugnale
- Applicant Address: CA Waterloo
- Assignee: Research In Motion Limited
- Current Assignee: Research In Motion Limited
- Current Assignee Address: CA Waterloo
- Agency: Perry + Currier Inc.
- Agent David J. Johnson
- Main IPC: G09G5/00
- IPC: G09G5/00
Abstract:
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.
Public/Granted literature
- US20110074690A1 AUTOMATIC KEYPAD BACKLIGHT ADJUSTMENT ON A MOBILE HANDHELD ELECTRONIC DEVICE Public/Granted day:2011-03-31
Information query
