Title:
ビットストリーム内の定義済みコードの検索
Document Type and Number:
Japanese Patent JP2004521582
Kind Code:
A
Abstract:
A method of searching for a predefined code in a bit stream, the method comprising initiating a first search for correlation of the bit stream with a reference code applied to the bit stream at a first plurality of different times according to a first resolution to produce a first set of correlation values and associated times. Then a second search is initiated for correlation of the bit stream with the reference code applied to the bit stream at a second plurality of different times to produce a second set of correlation values and associated times, the reference code being offset in time from a maximal correlation value of the first set such that the reference code is applied to the bit stream at times other than times of the first plurality. Then, out of the first and the second sets a maximal correlation value is selected for use in calculating a strength of the predefined code in the bit stream.
Inventors:
Ronald, Gerhards
Gus, boss
William, Birch
Gus, boss
William, Birch
Application Number:
JP2003513144A
Publication Date:
July 15, 2004
Filing Date:
July 08, 2002
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
H04B1/7075; H04B1/7077; (IPC1-7): H04B1/707
Attorney, Agent or Firm:
Kenji Yoshitake
Hidetoshi Tachibana
Yasukazu Sato
Hiroshi Yoshimoto
Yasushi Kawasaki
Hidetoshi Tachibana
Yasukazu Sato
Hiroshi Yoshimoto
Yasushi Kawasaki