公开(公告)号：AU662470B2

公开(公告)日：1995-08-31

申请号：AU3107793

申请日：1993-01-06

Applicant: SYMBOL TECHNOLOGIES INC

Inventor： SHELLHAMMER STEPHEN J ,  CHEN MING-HUA ,  NIKZAD ARMAN

IPC: G06K7/016 ,  G06K7/10 ,  G06K19/06 ,  G06K9/18 ,  G06K9/82

Abstract: 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.

公开(公告)号：ZA9300102B

公开(公告)日：1993-11-03

申请号：ZA9300102

申请日：1993-01-07

Applicant: SYMBOL TECHNOLOGIES INC

Inventor： SHELLHAMMER STEPHEN J ,  CHEN MING-HUA ,  NIKZAD ARMAN

IPC: G06K7/016 ,  G06K7/10 ,  G06K19/06 ,  G06K ,  H03M

CPC classification number: G06K7/1093 ,  G06K7/0166 ,  G06K7/1417 ,  G06K7/1443 ,  G06K7/1456 ,  G06K19/06037

公开(公告)号：BR9300174A

公开(公告)日：1993-09-21

申请号：BR9300174

申请日：1993-01-22

Applicant: SYMBOL TECHNOLOGIES INC

Inventor： SHELLHAMMER STEPHEN J ,  CHEN MING-HUA ,  NIKZAD ARMAN

IPC: G06K7/016 ,  G06K7/10 ,  G06K19/06 ,  H03M13/00

Abstract: 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.

公开(公告)号：ZA93102B

公开(公告)日：1993-11-03

申请号：ZA93102

申请日：1993-01-07

Applicant: SYMBOL TECHNOLOGIES INC

Inventor： SHELLHAMMER STEPHEN J ,  CHEN MING-HUA ,  NIKZAD ARMAN

IPC: G06K7/016 ,  G06K7/10 ,  G06K19/06 ,  G06K ,  H03M

Abstract: 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.

公开(公告)号：AU3107793A

公开(公告)日：1993-09-23

申请号：AU3107793

申请日：1993-01-06

Applicant: SYMBOL TECHNOLOGIES INC

Inventor： SHELLHAMMER STEPHEN J ,  CHEN MING-HUA ,  NIKZAD ARMAN

IPC: G06K7/016 ,  G06K7/10 ,  G06K19/06 ,  G06K9/18 ,  G06K9/82

Abstract: 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.