05319181 is referenced by 331 patents and cites 6 patents.

A method and apparatus for decoding a two-dimensional bar code symbol using a charge-coupled device (CCD) camera or a charge-modulation device (CMD) camera. The CCD/CMD camera takes pictures of the symbol and the picture is converted into digital data. The location and orientation of the two-dimensional bar code symbol is determined and verified. Defects and damages on the symbol are detected and corrected. The symbol is scanned to read the codewords of the two-dimensional bar code symbol.

Title
Method and apparatus for decoding two-dimensional bar code using CCD/CMD camera
Application Number
7/851493
Publication Number
5319181
Application Date
March 16, 1992
Publication Date
June 7, 1994
Inventor
Arman Nikzad
Holbrook
NY, US
Ming Hua Chen
Stony Brook
NY, US
Stephen J Shellhammer
Bayport
NY, US
Agent
Finnegan Henderson Farabow Garrett & Dunner
Assignee
Symbol Technologies
NY, US
IPC
G06K 9/00
G06K 7/10
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