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Optimizing channel switching for digital television through low quality streams

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Abstract
The popularity of digital television is rapidly increasing. One of its impediments however, is the time it takes to switch from one channel to another. This paper proposes a way to smoothen channel transitions: In addition to the high quality stream, a number of channels is transmitted to the video client in low quality. When the user selects a new channel, the low quality version of the channel is displayed and the high quality version is requested. As soon as the high quality stream is available, high quality video is displayed. This way, the effect of channel switching can be reduced to the user observing lower resolution for a brief moment, instead of watching a blank screen or a frozen frame. In a lab environment, average channel switching time was reduced from 1400 milliseconds to 78 milliseconds.
Keywords
channel switching, access networks, IPTV

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Chicago
De Wachter, Jeroen, D Tytgat, Vincent Verstraete, Matthias Strobbe, Frederic Van Quickenborne, Philippe De Neve, Filip De Turck, and Piet Demeester. 2007. “Optimizing Channel Switching for Digital Television Through Low Quality Streams.” In Proceedings of the Sixth IASTED International Conference on Communication Systems and Networks, ed. CE Palau Salvador, 55–62. Anaheim, CA, USA: ACTA Press Anaheim.
APA
De Wachter, J., Tytgat, D., Verstraete, V., Strobbe, M., Van Quickenborne, F., De Neve, P., De Turck, F., et al. (2007). Optimizing channel switching for digital television through low quality streams. In C. Palau Salvador (Ed.), Proceedings of the sixth IASTED international conference on communication systems and networks (pp. 55–62). Presented at the 6th IASTED International Conference on Communication Systems and Networks, Anaheim, CA, USA: ACTA Press Anaheim.
Vancouver
1.
De Wachter J, Tytgat D, Verstraete V, Strobbe M, Van Quickenborne F, De Neve P, et al. Optimizing channel switching for digital television through low quality streams. In: Palau Salvador C, editor. Proceedings of the sixth IASTED international conference on communication systems and networks. Anaheim, CA, USA: ACTA Press Anaheim; 2007. p. 55–62.
MLA
De Wachter, Jeroen, D Tytgat, Vincent Verstraete, et al. “Optimizing Channel Switching for Digital Television Through Low Quality Streams.” Proceedings of the Sixth IASTED International Conference on Communication Systems and Networks. Ed. CE Palau Salvador. Anaheim, CA, USA: ACTA Press Anaheim, 2007. 55–62. Print.
@inproceedings{412013,
  abstract     = {The popularity of digital television is rapidly increasing. One of its impediments however, is the time it takes to switch from one channel to another. This paper proposes a way to smoothen channel transitions: In addition to the high quality stream, a number of channels is transmitted to the video client in low quality. When the user selects a new channel, the low quality version of the channel is displayed and the high quality version is requested. As soon as the high quality stream is available, high quality video is displayed. This way, the effect of channel switching can be reduced to the user observing lower resolution for a brief moment, instead of watching a blank screen or a frozen frame. In a lab environment, average channel switching time was reduced from 1400 milliseconds to 78 milliseconds.},
  author       = {De Wachter, Jeroen and Tytgat, D and Verstraete, Vincent and Strobbe, Matthias and Van Quickenborne, Frederic and De Neve, Philippe and De Turck, Filip and Demeester, Piet},
  booktitle    = {Proceedings of the sixth IASTED international conference on communication systems and networks},
  editor       = {Palau Salvador, CE},
  isbn         = {9780889866959},
  language     = {eng},
  location     = {Palma de Mallorca, Spain},
  pages        = {55--62},
  publisher    = {ACTA Press Anaheim},
  title        = {Optimizing channel switching for digital television through low quality streams},
  year         = {2007},
}

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