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Item Sensing Using Changes in Data Rates Disclosure Number: IPCOM000061404D
Original Publication Date: 1986-Jun-01
Included in the Prior Art Database: 2005-Mar-09

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Broockman, EC [+details]


Supermarket scanners conventionally include one or more photodetectors which detect the arrival of an item to be scanned. This article suggests that items may be detected without such photodetectors by monitoring the digital data rate of the video signal produced by a continuously scanning laser beam.