Apparatus and method for controlling mobile phone component backlight

Abstract

The invention relates to a control device and a method for the backlight of a mobile phone component. The control device comprises a light sensation sampling module, a keyboard light sensation control module, an LCK light sensation control module, a keyboard operation control module, an LCD operation control module, a keyboard drive, an LCD drive, a keyboard backlight module and an LCD backlight module; the control method comprises the following steps: a. whether a component backlight is turned on or not is judged; if the component backlight is turned on, the light sensation sampling module is triggered and step b is conducted after the component backlight is turned off, or else the light sensation sampling module is directly triggered and step b is conducted; step b. the light sensation sampling module samples for the external optical intensity of the mobile phone, and the sampling value is converted into a voltage value; step c. the current optical intensity is determined according to the voltage value, then whether the component backlight needs to be turned on is judged according the current optical intensity and the control regulation of the component backlight, and the component backlight is turned on if necessary. The invention realizes the independent control of mobile phone keyboard backlight and LCD backlight through light sensation elements.

Description

Technical field [0001] The invention relates to the field of mobile phone power consumption control, and in particular to a control device and method for the backlight of mobile phone components. Background technique [0002] When appraising the overall performance of a mobile phone, mobile phone power consumption is a very important indicator. The standby time, talk time, and MP3 and MP4 playback time of the mobile phone are all affected by the power consumption of the mobile phone during use. If the mobile phone power consumption during use can be reduced, the corresponding standby time and talk time can be extended to a certain extent And the time to play MP3, MP4, etc. [0003] At present, the current range of the White Led (white light lamp) as the backlight is 0mA-60mA. When the backlight of the mobile phone keyboard is provided, the current of the White Led is set to 30mA, and the light lasts for 5-10s; for the mobile phone LCD (Liquid When the Crystal Display provides bac...

AI Technical Summary

Problems solved by technology

As mentioned above, the mobile phone keyboard backlight and LCD backlight have their own characteristics. If they are not controlled according to their characteristics, the control effect of mobile phone power consumption and user experience will be affected.

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