Method of controlling illumination pulses to increase dynamic range in bioptic imager barcode scanner

Patent metadata

Field	Value
Publication number	US-8998089-B2
Application number	US-201313792564-A
Country	US
Kind code	B2
Filing date	Mar 11, 2013
Priority date	Jan 3, 2013
Publication date	Apr 7, 2015
Grant date	Apr 7, 2015

Abstract

A method for controlling a workstation includes the following: (1) energizing a first illuminator to illuminate a first subfield of view with a first illumination pulse and subsequently energizing the first illuminator to illuminate the first subfield of view with a second illumination pulse; (2) exposing the array of photosensitive elements in the imaging sensor for a first sensor-exposure time and subsequently exposing the array of photosensitive elements in the imaging sensor for a second sensor-exposure time; and (3) processing an image captured by the imaging sensor to decode a barcode in the image. The first illumination pulse overlaps with the first sensor-exposure time for a first overlapped-pulse-duration, and the second illumination pulse overlaps with the second sensor-exposure time for a second overlapped-pulse-duration. The first overlapped-pulse-duration is different from the second overlapped-pulse-duration.

First claim

What is claimed is:

1. A workstation comprising:
a housing;
at least one window supported by the housing;
at least one imaging sensor supported by the housing and having an array of photosensitive elements with a field of view;
an optical system supported by the housing and operative for splitting the field of view of the at least one imaging sensor into a plurality of subfields of view that simultaneously extend through the at least one window;
a plurality of energizable…

Assignees

• Symbol Technologies Inc

Inventors

• Chen Caihua Lucy
• Barkan Edward D
• Tan Chinh

Classifications

• G06K7/10752 Primary

  Physics · mapped topic

• G06K7/1096

  Physics · mapped topic

• G06K7/1408

  Physics · mapped topic