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Video on demand system with a transmission schedule table in the video server including entries for client identifiers, video titles, and reproduction start times

  • US 5,913,039 A
  • Filed: 01/17/1997
  • Issued: 06/15/1999
  • Est. Priority Date: 01/19/1996
  • Status: Expired due to Fees
First Claim
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1. An on-demand communication system in which a plurality of clients and a multi-media server are connected via a network and a data stream is transmitted in response to a transmission request of a title from one of the clients, each client comprising:

  • transmission means which transmits a set of reproduction information comprising a plurality of titles and reproduction start time of each of their the data streams to the server along with a client identifier for identification;

    reception means for receiving the data stream transmitted from the server; and

    reproduction and output means for reproducing and outputting the data stream received by the reception means,the server comprising;

    reception buffer for temporarily storing the set of the reproduction information and the client identifier transmitted from the transmission means;

    transmission information creation means for reading the set of the reproduction information and the client identifier stored in the reception buffer and creating a set of transmission information for each client, wherein the transmission information includes a title and a transmission start time that are equal to the title and the reproduction start time in the reproduction information;

    transmission information storage means for storing the set of the transmission information for each client which was created by the transmission information creation means;

    data stream storage means for storing groups of data stream per title;

    transmission instruction means for reading the set of the transmission information stored in the transmission information storage means and giving a transmission instruction when the transmission start time comes; and

    data stream transmission means for reading the data stream which corresponds to the title in the transmission information and is stored in the data stream storage means and transmitting it to the client,wherein the transmission instruction includes the title and the client identifier.

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