| 摘要 |
This invention describes a new method and system for delivering data over a network to a large number of clients, which may be suitable for building lar ge- scale Video-on-Demand (VOD) systems. In current VOD systems, the client may suffer from a long latency before starting to receive the requested data tha t is capable of providing sufficient interactive functions, or the reverse, without significantly increasing the network load. The method utilizes two groups of data streams, one responsible for minimizing latency while the oth er one provides the required interactive functions. In the anti-latency data group, uniform, non-uniform or hierarchical staggered stream intervals may b e used. The system of this invention may have a relatively small startup laten cy while users may enjoy most of the interactive functions that are typical of video recorders. Furthermore, this invention may also be able to maintain th e number of data streams, or the bandwidth, required.
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