Abstract: Preferred embodiments of the present invention comprise methods and software for providing a navigable, context-sensitive electronic display. A preferred embodiment comprises providing a cross hairs that consists of objects forming an intersection, each object corresponding to a different geometrical dimension of the display; communicating with an input device that provides signals to control movement of the cross hairs; and in response to signals received from said input device, configuring the cross hairs to point to a region on the display; wherein at least some data displayed on the display has an associated context; and wherein movement of the cross hairs on the display is based at least in part upon that context.

Abstract: In one aspect of a preferred embodiment, the present invention comprises a system for video compression comprising a video preprocessor; a predictor configured to receive video data from the preprocessor; and an encoder configured to communicate with the predictor. Preferably, the preprocessor comprises a colorspace converter, a frame activity detector, and a subsampler, the predictor comprises a frame differencer and a reference frame handler, and the encoder comprises an error image encoder and an image adder. In another aspect, the invention comprises a system for video decompression comprising a predictor and a decoder configured to communicate with the predictor. Preferably, the predictor comprises a reference frame handler and wherein said decoder comprises an error image decoder and a colorspace converter.