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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)

Abstract

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.

Keywords

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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References

  1. 1.
    Pickholtz, R., Schilling, D. and Millstein, L.: Theory of Spread Spectrum Communications. A Tutorial. IEEE Transaction on Communication, Vol. COMM-30 (1982) 855–884CrossRefGoogle Scholar
  2. 2.
    Cox, I., Kilian, J., Leighton, T. and Shamoon, T.: Secure Spread Spectrum Watermarking for Multimedia. IEEE transactions on Image Processing, Vol. 6,No.12 (1997) 1673–1687CrossRefGoogle Scholar
  3. 3.
    Hartung, F. and B. Girod, B.: Watermarking of Uncompressed and Compressed Video. Signal Processing, Vol. 66,no. 3 (Special issue on Watermarking) (1998) 283–301zbMATHCrossRefGoogle Scholar

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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