Patent ID: 8482677

Claim:
A display device including power management comprising: (a) said display device including a first input suitable to receive electrical power from an outlet for providing power for the operation of said display device; (b) said display device including a second input suitable to receive electrical power from an external battery source for providing power for the operation of said display device, where said first input to said display device and said second input to said display device are spaced apart from one another, and interconnected such that said external battery source may be recharged when said first input receives power from said outlet; (c) said display device including an internal battery source enclosed within said display device suitable for providing power for the operation of said display device; (d) a source select enclosed within said display device that selects power from at least one of said first input, said second input, and said internal battery for providing power for the operation of said display device; (e) a processor that receives video content from a video source and selectively modifies a backlight of said display device based upon the power source selected by said source select in such a manner as to reduce the power consumption of said display device; (f) wherein said backlight is modified based upon a signal from said external battery source provided to said second input, apart from said electrical power from said external battery source, wherein said signal provides an estimate of the available battery power charge level of said external battery source.