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:
Dec. 04, 2012
Filed:
Mar. 30, 2009
John Anderson Fergus Ross, Niskayuna, NY (US);
Aria Pezeshk, State College, PA (US);
John Anderson Fergus Ross, Niskayuna, NY (US);
Aria Pezeshk, State College, PA (US);
General Electric Company, Niskayuna, NY (US);
Abstract
The present techniques provide systems and methods for decoding an optical data signal returned from an optical disc to retrieve source information. The decoding method is based on a 16 state trellis diagram, and may decode an optical data signal encoded through a modulation code where the input-to-output relationship is not convolutional, such as the 17 Parity Preserve/Prohibit (17pp) modulation code. A trellis diagram may enable non-convolutional trellis-modulated data to be more efficiently decoded. Further, the 16 state trellis diagram of the present techniques provides a unique path for each input-to-output bit pair, such that no information about input bits may be lost on parallel paths in a trellis diagram.