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:
Jul. 31, 2012
Filed:
Dec. 18, 2008
John Anderson Fergus Ross, Niskayuna, NY (US);
Kenneth Brakeley Welles, Scotia, NY (US);
John Erik Hershey, Ballston Lake, NY (US);
Xiaolei Shi, Niskayuna, NY (US);
Victor Petrovich Ostroverkhov, Ballston Lake, NY (US);
John Anderson Fergus Ross, Niskayuna, NY (US);
Kenneth Brakeley Welles, Scotia, NY (US);
John Erik Hershey, Ballston Lake, NY (US);
Xiaolei Shi, Niskayuna, NY (US);
Victor Petrovich Ostroverkhov, Ballston Lake, NY (US);
General Electric Copany, Schenectady, NY (US);
Abstract
The present techniques provide methods and systems for more reliable reading of optical data disks. In embodiments, a multi-pixel detector that is segmented into multiple areas, or detector segments, may be used to detect a pattern in the light reflected from an optical data disk. The pattern may include light scattered from a single bit that may be under a center detector, as well as light scattered from proximate bits. The detector system may then combine the quantized values from each of the detector segments mathematically to determine the presence or absence of a bit or bits of data. The mathematical combination may also use data that is known about the status of adjacent data bits (such as previously read bits, or bit patterns which are allowed or not allowed by specific data encoding schemes) to improve the accuracy of the bit prediction.