Abstract
In the age of digital multimedia, demand is bound to rise for television Home Servers that automatically record a viewer's favorite programs so that he/she can watch them at any time. We have developed an experimental. Home Server on which a recorded HDTV program can be played back while recording another digital HDTV program. Using a new HSMS (hierarchical storage management system) we proposed, it was able to store HDTV programs for 4 hours and was as small as thickness of flat displays. This paper describes the outline of the experimental system and its element technologies.