Trend Calculation for Analyzer

30 October 2001

Implemented the trend calculation for the analyser. This is quite useful to automate track type recognition. As a consequence, the density graphs changed. The original data is shown in the background with a lighter color, while the trend data is shown in blue.

Trend 1: Normal Track
Trend 2: Copylock Track
Trend 3: Unwritten Track ("noise")
Trend 4: Long Track, Partially Unwritten

The “long track, with partially unwritten data” is quite interesting, since noise can’t be detected properly without mathematical analysis, it clearly shows the long track capacity is only used to fool copiers, but removing the noise the track can be perfectly fit into a normal track. That means, this type of protection is remasterable, when noise is removed.