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Video data distributing device by video on demand

  • US 6,211,901 B1
  • Filed: 05/21/1996
  • Issued: 04/03/2001
  • Est. Priority Date: 06/30/1995
  • Status: Expired due to Term
First Claim
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1. A video data distributing device having at least one video server including a video data storage device for storing video data and a streaming unit reading the video data from the video data storage device to perform a video streaming process on the video data, said video data distributing device providing a subscriber with a video-on-demand service at a request from the subscriber, comprising:

  • a load state management unit managing a load in a process of each video server and determining if spare capacity exists on the video server;

    a full-video-on-demand service providing unit providing a requested video data through a full-video-on-demand service which broadcasts the video data stored in the video data storage device along one channel, wherein the broadcasted video data is played upon a request of the subscriber;

    a near-video-on-demand service providing unit providing said requested video data through a near-video-on-demand service which broadcasts the video data stored in video data storage device along plural channels at predetermined time intervals;

    a service switch determining unit determining, upon receipt of a request to watch a video from the subscriber, whether a broadcast of the requested video is to be serviced in the full-video-on-demand service or the near-video-on-demand service depending on management information managed by said load state management unit including whether spare capacity exists on the server as determined by said load state management unit; and

    a broadcast unit broadcasting the requested video by said full-video-on-demand service providing unit or said near-video-on-demand service providing unit for the subscriber according to a determination result from said service switch determining unit.

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