CCD-based POSTNET bar-code reader

Mehul Patel; Vasanth Shreesha; Kurt Hecht; Jim Cox; John Schultz

doi:10.1117/12.228850

22 December 1995 CCD-based POSTNET bar-code reader

Mehul Patel, Vasanth Shreesha, Kurt Hecht, Jim Cox, John Schultz

Proceedings Volume 2595, Machine Tool, In-Line, and Robot Sensors and Controls; (1995) https://doi.org/10.1117/12.228850
Event: Photonics East '95, 1995, Philadelphia, PA, United States

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.

Citation Download Citation

Mehul Patel, Vasanth Shreesha, Kurt Hecht, Jim Cox, and John Schultz "CCD-based POSTNET bar-code reader", Proc. SPIE 2595, Machine Tool, In-Line, and Robot Sensors and Controls, (22 December 1995); https://doi.org/10.1117/12.228850

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available