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:
Aug. 05, 2003
Filed:
Aug. 04, 1999
Gijsbert J. Van Den Enden, Veldhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
An optical disc for recording data and having a recording area subdivided into coaxial annular zones with circular or spiral tracks. Each track within one of the zones is arranged for storing a same predetermined amount of data, and the first track of each zone stores an amount of data proportional to the radial position, resulting on average in a substantially constant density, the so called CLV (Constant Linear Velocity) density. The tracks include periodic characteristics, e.g. a wobble, which are radially aligned within each one of the zones, the periodicity indicating the track recording density for the track concerned. Hence, the data recording and reading speed can be synchronized to the periodic characteristics, whereas any cross-talk of the periodic characteristics of neighboring tracks is avoided.