Patent №
US 6,969,003
Granted
2005-11-29
Filed 2002
Owner
WELCH ALLYN DATA COLLECTION, INC.
+1 more
Lab
—
AI components
1
vision
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
10324888
Briefly stated, the operating depth of field for a bar code scanner, preferably a laser scanner, is increased by placing a cubic phase mask (CPM) in the scanning beam. The masked beam is then scanned and reflected off a bar code and received by a photodetector. The received signal is then processed to recover the original unperturbed representation of the bar code pattern. The processed signal has an increased depth of field over an unmasked scanner signal.
AI classification
Ownership
WELCH ALLYN DATA COLLECTION, INC.
assignment · 199950727
HAND HELD PRODUCTS, INC.
namechg · 199950730
Assignors
HAVENS, WILLIAM H., HAMMOND, CHARLES M.
On an employer assignment, the assignors are typically the inventors.