Storing digital broadcast signals using an advanced optical storage device: data allocation and simultaneous record and playback
Steven B. LUITJENS, J.F.R. Blacquiere, K. van Gelder, Declan P. Kelly, Mitsuaki KATO · IEEE Transactions on Consumer Electronics · 2002
Optical disc based video recorders have recently become available. This paper discusses the application format for a system based on an advanced optical rewritable system (DVR-blue). The format is especially suited for broadcast recording. The high rate (35 Mbit/s) and capacity (22 GB) of DVR-blue enables recording of HDTV (24 Mbit/s) for 2 hours, along with new features like simultaneous record and playback of SDTV material. Playback of edited material is seamless. We show that a set of allocation rules for the data combined with reference drive performance guarantees simultaneous record and playback for SDTV streams (/spl les/10 Mbit/s) using a large physically contiguous collection of data called a segment.