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Proceedings Paper

CCD-based POSTNET bar-code reader
Author(s): Mehul Patel; Vasanth Shreesha; Kurt Hecht; Jim Cox; John Schultz
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Paper Abstract

A CCD based barcode reader has been developed to read the POSTNET barcode with a bar/space width as small as 13 mils. This barcode is currently being used by the united States Post Office. The system can decode barcodes up to a conveyor speed of 250 ft/min for bars travelling parallel to the CCD sensor array. The system consisting of a camera and a logic unit was designed to incorporate various lengths of linear CCD sensor arrays manufactured by EG&G Corporation. The length of the sensor is dependent upon the required field of view. The camera unit processes the analog signal from the CCD sensor and converts it into a binary signal, which is then transmitted to the logic unit. The logic unit uses a Texas Instrument TMS320C30 processor and does the actual signal processing and decoding of the POSTNET code. This paper describes the hardware and the software developed for this system using a 512 element CCD sensor.

Paper Details

Date Published: 22 December 1995
PDF: 6 pages
Proc. SPIE 2595, Machine Tool, In-Line, and Robot Sensors and Controls, (22 December 1995); doi: 10.1117/12.228850
Show Author Affiliations
Mehul Patel, Insight Inc. (United States)
Vasanth Shreesha, Accu-Sort Systems, Inc. (United States)
Kurt Hecht, Accu-Sort Systems, Inc. (United States)
Jim Cox, Accu-Sort Systems, Inc. (United States)
John Schultz, Accu-Sort Systems, Inc. (United States)

Published in SPIE Proceedings Vol. 2595:
Machine Tool, In-Line, and Robot Sensors and Controls
George D. Foret; Kam C. Lau; Bartholomew O. Nnaji, Editor(s)

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