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Method for obtaining line synchronization information items from a video signal, and apparatus for carrying out the method

  • US 20040174461A1
  • Filed: 01/06/2004
  • Published: 09/09/2004
  • Est. Priority Date: 07/06/2001
  • Status: Active Grant
First Claim
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1. Method for correcting line synchronization information of an analogue video line signal by (a) analyzing the entire or a relevant part of the analogue video line signal comprising the line synchronization pulses to determine time instants (ti) defining the temporal position of the line synchronization pulse included in the analogue video line signal, characterized by the following steps:

  • (b) storing a predetermined number (m) of video lines in a line delay, and (c) calculating a time instant (Tm) for a video line preceding the currently received video line to mark the temporal position of the synchronization information of the video line, wherein the time instant (Tm) is a function of the line synchronization pulse positions (ti) of video lines including the currently received, at least one preceding and at least one succeeding video line.

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