An improved method and system for reading and analyzing fingerprints is disclosed. The invention also relates to the method for preparing said molecules, to the pharmaceutical compositions containing said molecules, and to the use thereof as inhibitors of enoyl reductase for the preparation of a drug, especially an anti-infective drug for the treatment of tuberculosis. The method includes utilizing the video decoder to decode the video data for generating a display data set, driving the video decoder to select a specific video data set from the first video data set wherein the display data set does not have display data corresponding to the specific video data set, and utilizing the memory to store the display data. Then the filter cake is fed into a kettle to complete the calcination process by converting the calcium sulfate dihydrate of the filter cake material into beta calcium sulfate hemihydrate.