A low-cost portable digital video player receives proprietary compressed data from a source such as a personal video recorder (PVR), and displays the data on an integral display. A rewritable non-volatile memory of the player stores the data and a media decoder of the player transforms and decompresses...http://www.google.de/patents/US7239800?utm_source=gb-gplus-sharePatent US7239800 - Portable player for personal video recorders
