20120155056 | LIGHT EMITTING DIODE BACKUP SYSTEMS AND METHODS - Systems and methods for backing up LEDs are provided. In one embodiment, an LED backup system includes an LED backup controller operable to select from a plurality of power sources to supply electrical energy to a set of LEDs. The plurality of power sources includes a primary power source and a battery. The LED backup controller is adapted to be in selective electrical communication with the primary power source via a first electrical path. The LED backup controller is also adapted to be in electrical communication with the primary power source via a second electrical path. The LED backup controller is operable to select the battery to supply electrical energy to the set of LEDs in response to a failure of the LED backup controller to electrically communicate with the primary power source via the second electrical path. | 06-21-2012 |