US Patent 7581176 Document display system and method

A document presentation system is disclosed. The document presentation system includes a rendering unit that can analyse user or publisher preferences to determine content layout and navigation by examining the dimensions of the available viewing area to determine a suitable document layout and navigation system, a formatting unit that resizes and rearranges content according to the content layout and navigation determined by the rendering unit, a display unit that presents content to a user and responds to user interaction, and a cache unit that stores reformatted content for display by the display unit.