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:
Sep. 23, 2008
Filed:
Dec. 01, 2003
Johannis Friso Rendert Blacquiere, Eindhoven, NL;
Cornelis Marinus Schep, Eindhoven, NL;
Aalbert Stek, Eindhoven, NL;
Theodorus Petrus Henricus Gerardus Jansen, Eindhoven, NL;
Johannis Friso Rendert Blacquiere, Eindhoven, NL;
Cornelis Marinus Schep, Eindhoven, NL;
Aalbert Stek, Eindhoven, NL;
Theodorus Petrus Henricus Gerardus Jansen, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eidhoven, NL;
Abstract
When writing data to an optic disc with a constant linear velocity, and encountering a disc error, data is written into the defect management area of the disc without changing the rotational speed of the disc, or at least without changing the rotational speed of the disc sufficiently to maintain a constant linear velocity. This allows an increase in the rate at which data may be written to the optical disc. It also avoids or reduces the need for the rotational speed of the disc to be changed, which allows a further improvement in the time taken to write data to the disc. In order to continue writing data to the disc without changing the rotational speed, the data rate must be increased while writing to the defect management area. For this to be possible, the data must be written into an 'iced' or unformatted part of the defect management area.