Patent ID: 8537102

Claim:
A backlight control apparatus, for controlling the luminance of a backlight panel and comprising: an image information memory, for storing an image information; and a detection and automatic switching circuit, coupled to the image information memory for detecting an updated frequency of the updated image information, wherein the detection and automatic switching circuit sets a displaying mode for adjusting the luminance of the backlight panel according to the updated frequency, wherein the detection and automatic switching circuit comprises: a detection counter, detecting the updated status of the image information every a predetermined time period and further changing a counting result according to the updated status; and a mode switch, coupled to the detection counter for setting the displaying model as an animated model or a static model according to the counting result, wherein when the detection counter detects that the image information is not updated yet within a predetermined time, the counting result is descended; when the detection counter detects that the image information is updated already within a predetermined time, the counting result is ascended.