The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 2008
Filed:
Dec. 10, 2001
Heinz-jörg Schröder, Le Chevalon de Voreppe, FR;
Christian Büchler, Villingen-Schwenningen, DE;
Stefan Kimmelmann, Bad Duerrheim, DE;
Heinz-Jörg Schröder, Le Chevalon de Voreppe, FR;
Christian Büchler, Villingen-Schwenningen, DE;
Stefan Kimmelmann, Bad Duerrheim, DE;
Thomson Licensing, Boulogna Billancourt, FR;
Abstract
The track jumping of a scanner on optical storage media in which information items are stored on groove and land tracks or which have not yet been written to is intended to be made possible in a reliable manner. For this purpose, firstly a fictitious track type is defined for a regulating circuit, which regulates the position of the scanner. The regulating circuit is then closed on the basis of the track type defined and a track scanning signal. The reaction of the scanner to the closing is detected in order to obtain from this an item of information about the track type. This method is also advantageous, in principle, for closing the track following regulation in information carriers having relatively high storage densities.