06385352 is referenced by 249 patents.

A system and method for reading a two-dimensional image, and for comparing the two-dimensional image to stored data representative of a known image. The optical scanning device comprises a sensor for capturing the two-dimensional image, which sensor includes an LED array for projecting an emitted light towards the two-dimensional image. The sensor also includes a lens disposed forward of the LED array for focussing the emitted light and thereby framing the two-dimensional image. The sensor further includes an optical assembly for focussing an ambient light reflected from the framed two-dimensional image. And the sensor includes a CMOS (or CCD) detector for detecting the focussed ambient light, the CMOS detector including a photodiode array for sensing the focussed ambient light and a processor for processing the ambient light to obtain an electrical image signal. The optical scanning device also compresses the electrical image signal. Finally, the optical scanning device decodes the compressed image signal to obtain image data representative of the two-dimensional image. The image data can be compared to the stored data to determine if the two-dimensional image matches the known image.

Title
System and method for reading and comparing two-dimensional images
Application Number
8/329257
Publication Number
6385352 (B1)
Application Date
October 26, 1994
Publication Date
May 7, 2002
Inventor
Alexander Roustaei
La Jolla
CA, US
Agent
Clifford Chance Rogers & Wells
US
Agent
Mitchell S Feller Esq
US
Ira J Schaefer Esq
US
Assignee
Symbol Technologies
NY, US
IPC
G06K 9/32
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