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Proceedings Paper

Trick mode solutions for MPEG tape recording
Author(s): Emmanuel D. Frimout; Jan Biemond; Reginald L. Lagendijk
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Paper Abstract

In this paper several formatting solutions which trick mode (fast forward, fast reverse) support for helical scan recording are proposed. First, two basic methods where the trick mode signal is built up from semi-random sections of the normal stream, will be discussed. These low complexity methods form the basis for the extension to more advanced solutions that employ a dedicated bit stream for trick modes. A method of formatting this dedicated trick stream on a recorder without phase lock between the scanner and the tape during fast forward is presented by means of three separate case studies. In order to guarantee that the trick mode stream is read at the chosen speed multiple copies of the same stream need to be placed at well chosen places on the tape. This solution is extremely attractive for systems where a limited number of speedup levels are required. Recorders that can perform phase locking during fast forward yield a particular advantage for high speed-up (n equals 12, 18, ...) factors and allow for the support of more distinct speedup levels.

Paper Details

Date Published: 16 September 1994
PDF: 11 pages
Proc. SPIE 2308, Visual Communications and Image Processing '94, (16 September 1994); doi: 10.1117/12.185973
Show Author Affiliations
Emmanuel D. Frimout, Delft Univ. of Technology (Netherlands)
Jan Biemond, Delft Univ. of Technology (Netherlands)
Reginald L. Lagendijk, Delft Univ. of Technology (Netherlands)

Published in SPIE Proceedings Vol. 2308:
Visual Communications and Image Processing '94
Aggelos K. Katsaggelos, Editor(s)

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