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. 25, 2014
Filed:
Jul. 17, 2012
Jeroen Dorgelo, Eindhoven, NL;
Mats Oberg, Cupertino, CA (US);
Antonius Leonardus Johannes Dekker, Eindhoven, NL;
Jeroen Dorgelo, Eindhoven, NL;
Mats Oberg, Cupertino, CA (US);
Antonius Leonardus Johannes Dekker, Eindhoven, NL;
Marvell World Trade Ltd., St. Michael, BB;
Abstract
New and useful methods and systems for reading optical discs, such as multi-layer Blu-ray discs are disclosed. For example, in an embodiment a device for reading two-layered optical discs includes a laser diode capable of emitting light, a set of optics including a fixed collimator, the set of optics providing a numerical aperture (NA) of substantially less than 0.85, and a detector for detecting laser light focused on a two-layer optical disc to produce a stream of detected bits.