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:
Mar. 01, 2005
Filed:
Nov. 02, 2001
Deepak K Gangadhar, Karnataka, IN;
Deepak K Gangadhar, Karnataka, IN;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and apparatus for generating a parity grid matrix from an indexed data representation are disclosed. The method includes the steps of calculating a parity value for each of specified rows and columns of the indexed representation, determining a parity restoration value for each of the specified rows and columns that exhibit a non-zero parity value, and adding the parity restoration values to one or more selected elements of the specified rows and columns that exhibit a non-zero parity value. A method and apparatus for embedding and retrieving information in/from data representations such as images, by use of a parity grid matrix, are also disclosed.
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