| 摘要 |
The present invention relates to a backlight-source-luminance auto-adjusting system including a backlight source, a photosensitive element being mounted on the backlight source for converting a light signal into an electric signal; an amplification/conversion circuit for amplifying a received analog signal and converting the analog signal into a digital signal; a control circuit for receiving a signal sent by the amplification/conversion circuit and adjusting the backlight source; and a device operating board. The present invention also relates to a backlight-source-luminance auto-adjusting method comprising: receiving a light signal of a backlight source and converting the light signal into an electric signal to be amplified and then converted into a digital signal; comparing a current value corresponding to the digital signal with a qualified current value corresponding to a set luminance of the backlight source; and controlling an output voltage of a control circuit and adjusting the backlight source, according to the comparison result. The backlight-source-luminance auto-adjusting system and method of the present invention can change the existing manually adjusting manner, improve the stability of backlight source luminance, realize automatic turning on and off of the backlight source, and slow aging of the device.
|
