The present invention discloses a detector and method for detecting data modulated with a timing based servo pattern pre-recorded on a medium.;The present invention is directed to shifting a pair of non-parallel transition stripes aligned to a frame of two bursts, detecting timing intervals between sequential transition stripes, comparing intervals for which interval comparison logic is selected and comparing the intervals to " 0. " Indicating whether "1" or "1" is displayed, the first and second counters incrementing the number of compared intervals, respectively, indicating "0" and "1" in each frame, and the bit comparison logic For each incremented frame, comparing a predetermined criterion with a number indicating "0" and "1" for each frame, if one of the numbers matches a predetermined criterion, the matching "0" or " Identifying 1 "as the bit value of the frame.;In addition, the present invention is data in which the bit includes a position word in a longitudinal direction, aligned in a linear sequence, and the sequence logic unit calculates a position word that is a trailing sequence from the immediately preceding word and detects it by validation. It is determined whether a given word is in a linear sequence. And provide the calculated word to the output. As such, even if the detected word is invalid, the result provides the correct position word.
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