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:
Nov. 25, 2003
Filed:
Mar. 13, 2000
Gary D. Huber, Shoreview, MN (US);
Gregory D. Hanson, Mounds View, MN (US);
Imation Corp., Oakdale, MN (US);
Abstract
A process of writing sector header data in the form of a stream of digital bits producing features located at varying radial positions on a master recording disk. Synchronized with rotation of the disk, a variable delay having a duration which varies with the radial positions of the bits on the disk is introduced into a clock signal. In the preferred embodiment, using the clock signal, a highly accurate, variable time delay is generated between the rotation of a master recording spindle and the recording of sector header data on a master disk mounted on the spindle. Thus, optical disks manufactured from the master disk have arc-shaped sector header spokes exhibiting maximum spatial accuracy and resultant maximal timing accuracy.