Patent ID: 8675909

Claim:
A digital electronic display operating in conjunction with a traffic signal, comprising: a communication unit configured to receive content including content segments and metadata, the content segments comprising a first content segment corresponding to illumination of a red light of the traffic signal and a second content segment corresponding to illumination of a turn light of the traffic signal; a display screen; a camera configured to capture images of vehicles in front of the traffic signal and to output a corresponding image signal; a sensor unit configured to detect illumination states of the traffic signal and output a corresponding detection output; and a processor configured to determine when and the duration during which each of at least the red light and a green light of the traffic signal is illuminated by monitoring motion of the vehicles within the image signal and by using the detection output of the sensor unit, present the first content segment corresponding to illumination of the red light on the display screen based on the metadata and substantially for the entire duration when the red light is illuminated, and control the display screen to operate in a low-power state substantially for the entire duration when the green light is illuminated.