A method encodes a video by first measuring a variance of pixel intensities in a current frame. A medical practice management server communicates with a medical practice client user interface over a first network and communicates with a payor server over a second network. Differences in velocity associated with different scan plane positions are used to alter or adjust a scan position. Consequently, heated air may be automatically output by the warmer to the blanket at the appropriate flow rate of that blanket to optimally inflate the blanket without any need for intervention by a user. The starting message may disclose whether the remaining access barring information need to be read. The relay lens assembly increases the effective f of incident light to the V-plate assembly or V-prism assembly that serves as dichroic combiner, used to combine modulated light of each color from each light modulation assembly in order to form the multicolor image.