07775436 is referenced by 30 patents and cites 316 patents.

A method of driving a plurality of visible and invisible laser diodes so as to produce an illumination beam having a dynamically managed ratio of visible to invisible (IR) spectral energy/power during object illumination and imaging operations. The method involves supplying a plurality of visible laser and invisible laser diodes with a predetermined/default values of diode drive currents so as to illuminate the object with a spectral mixture of illumination during object illumination and imaging operations. One or more digital images of the illuminated object are captured and the image contrast quality thereof is measured, in real-time, so as to generate feedback or control data. This feedback or control data is used to dynamically generate the necessary values for the adjusted diode drive currents that are used to drive the visible and invisible laser diodes and produce an illumination beam having a dynamically managed ratio of visible to invisible (IR) spectral energy/power required to produce images of sufficient image contrast to ensure satisfactory image processing, while minimizing visual brightness to humans, at a POS station during object illumination and imaging operations.

Title
Method of driving a plurality of visible and invisible LEDs so as to produce an illumination beam having a dynamically managed ratio of visible to invisible (IR) spectral energy/power during object illumination and imaging operations
Application Number
11/978951
Publication Number
7775436 (B2)
Application Date
October 30, 2007
Publication Date
August 17, 2010
Inventor
Duane Ellis
Medford
NJ, US
Ming Zhuo
Suzhou
CN
JiBin Liu
Suzhou
CN
Xi Tao
Suzhou
CN
Jie Ren
Suzhou
CN
Yong Liu
Suzhou
CN
Nicholas Ciarlante
Woolwich Township
NJ, US
John A Furlong
Woodbury
NJ, US
Mark Schmidt
Williamstown
NJ, US
Sean Kearney
Hamilton
NJ, US
Patrick Giordano
Blackwood
NJ, US
Steven Essinger
Philadelphia
PA, US
John Gardner
Mullica Hill
NJ, US
Mark Hernandez
Bridgeton
NJ, US
Michael Veksland
Marlton
NJ, US
Anatoly Kotlarsky
Churchville
PA, US
Tao Xian
Bensalem
PA, US
Timothy Good
Clementon
NJ, US
Xiaoxun Zhu
Marlton
NJ, US
C Harry Knowles
Hanover
NH, US
Agent
Thomas J Perkowski Esq P C
Assignee
Metrologic Instruments
NJ, US
IPC
G06K 7/10
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