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Browse Prior Art Database

Stream Identification System of Video On Demand System

IP.com Disclosure Number: IPCOM000117535D
Original Publication Date: 1996-Mar-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Asakawa, Y: AUTHOR [+3]

Abstract

Disclosed is a Video On Demand (VOD) system that enables the settop box to ensure that the received video stream is identical to the required one by utilizing MPEG2 private section.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Stream Identification System of Video On Demand System

      Disclosed is a Video On Demand (VOD) system that enables the
settop box to ensure that the received video stream is identical to
the required one by utilizing MPEG2 private section.

The Figure shows the principal of the procedure and each step is
shown below:
  a) Settop box requests the video data stream to the video-server.
  b) Settop box issues a command to video-server and which returns
      streamID by the data stream name.
  c) Settop box checks MPEG2 private section and compares it with the
      streamID acquired by 2) operation.

      A function that ensures request and coming data stream are the
same has to be provided in most VOD systems based on CATV network
because control channel and stream channel are physically different
in this kind of system.  This way of using MPEG2 private section for
sending information will be one of the most useful method in VOD
system.  It is applicable not only stream-matching information but
also application-unique information.