Thermostatic HVAC and other energy management controls that are connected to a computer network. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The first controlled electrode of the first transistor and the first controlled electrode of the second transistor may be coupled to the first electrode of the data cell. The central database is searched based on the vehicle description to find related vehicle information including physical characteristics of the vehicle. The method provides for mounting light emitting junctions on a support structure such that the junctions adopt a three-dimensional array.