Patent ID: 6370313
Filing Date: 2002-04-09
Classification: G11B

Abstract:
Method for writing information onto a longitudinally running control track of a storage medium of a helical scan recording device, comprising the steps of:a) inputting data X to be recorded onto the control track; b) converting the data X into data Y of a type permitting unambiguous detection of the data within the control track and not clashing with further, existing standards for data written to the control track, said converting step limiting the number of successive logic zeros â€œ0â€  and logic ones â€œ1â€  to a maximum value having a value smaller than any possible combination of successive zeros â€œ0â€  or ones â€œ1â€  marking the control track according to other standards, and arranging a header before the data Y for switching on the data detection, and providing a header after the data Y for switching off the data detection; and'c) recording the converted data Y, constituting one or more coded data block(s), and the headers, constituting header data blocks, onto the control track.