An Encoding Scheme for Dual Level Access to Broadcasting Networks

  • Thumrongrat Amornraks
  • David R. B. Burgess
  • Peter Sweeney
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1746)


In this paper, we propose an encoding scheme which gives two levels of access to a broadcast encrypted signal. Watermarking-type techniques based on direct-sequence spread spectrum communications are implemented to add specific information to the signal within the bandwidth allocated for broadcasting. This is beneficial to both the service providers and all subscribers in the network since the information added can advertise programmes which many are not yet authorised to access.


Block Size Encode Scheme Watermark Signal Channel Decoder Broadcasting Network 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • Thumrongrat Amornraks
  • David R. B. Burgess
  • Peter Sweeney
    • 1
  1. 1.CCSR, University of SurreyGuildfordUK

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