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Contrast Sensitive Gain Setting for Checkout Scanner

IP.com Disclosure Number: IPCOM000045496D
Original Publication Date: 1983-Apr-01
Included in the Prior Art Database: 2005-Feb-07

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Broockman, EC [+details]


This article describes apparatus and a technique for setting the gain of a photomultiplier tube (PMT) in a checkout scanner as a function of detected peak to peak values of delimiter characters in a label being scanned. The intended application is reading labels.