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. 10, 2002
Filed:
Nov. 23, 1998
Brent G. Robertson, Richardson, TX (US);
Glenn W. Lee, Plano, TX (US);
Roger J. Colburn, Plano, TX (US);
Informatics, Inc., Plano, TX (US);
Abstract
A method and apparatus for decoding two-dimensional barcode symbols from a data stream generated by scanning a two-dimensional barcode with a one-dimensional scanner. A decoding process according to one embodiment of the invention involves coupling the one-dimensional scanner to a serial or other port of a host computer in order to provide a data stream to a software decoder resident in the host computer. The software decoder performs a series of iterative steps in which the data stream is sampled at regular intervals to convert the data stream to a series of elements (e.g., bars and spaces). Barcode symbol data characters are then derived from the elements. A symbol matrix is next constructed, the matrix being representative of the two-dimensional barcode symbol.