公开(公告)号：US20130106295A1

公开(公告)日：2013-05-02

申请号：US13721879

申请日：2012-12-20

Applicant: Research In Motion Limited

Inventor： Antanas Matthew BROGA ,  Thomas James CRUGNALE

IPC: H05B37/02

CPC classification number: H05B37/02 ,  G06F3/0202

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 the 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.

Abstract translation: 提出了一种用于在具有用于小键盘的光传感器，键盘和背光源的移动电子设备上自动调节键盘亮度的方法，包括从光传感器获得光级样本，在背光源中将背光从关闭转到导通 当前的光级采样小于阈值，低于该阈值，为了读取键盘而需要背光照明，并且在当前光级样本大于阈值的情况下，在预定时间段之后从OFF到ON。