Patent ID: 7712666
Filing Date: 2010-05-11
Classification: G06K

Abstract:
1. An automatically-triggered digital video-imaging based code symbol reading system supporting dynamically controlled object illumination and digital video-imaging operations, said automatically-triggered digital video-imaging based code symbol reading system comprising: a housing having an imaging window; a digital image formation and detection subsystem, disposed within said housing, and having image formation optics for projecting a field of view (FOV) from an area-type image detection array, through said imaging window, and upon the object to be imaged during object illumination and video-imaging operations, and said area-type image detection array detecting frames of digital video image data of the object during said object illumination and video-imaging operations; an illumination subsystem, disposed within said housing, and having an illumination array for producing and projecting a field of illumination within said FOV during said object illumination and video-imaging operations; an object detection subsystem, disposed in said housing, for automatically detecting the presence of the object in said FOV, and generating a trigger signal indicative of the presence of the object within said FOV; an automatic illumination control subsystem, disposed within said housing, for automatically controlling said illumination array during said object illumination and video-imaging operations; a digital video frame capturing and buffering subsystem, disposed within said housing, for capturing and buffering said frames of digital video image data in memory, during said object illumination and video-imaging operations; a digital video image processing subsystem, disposed in said housing, for processing said frames of digital video image data and reading one or more 1D and/or 2D code symbols graphically represented in said frames of digital video image data, and producing symbol character data representative of said read one or more 1D and/or 2D code symbols; an input/output subsystem, disposed in said housing, for transmitting said symbol character data to a host system or other information receiving or responding device; and a system control subsystem, disposed in said housing, responsive to said trigger signal, and for managing in memory, exposure quality threshold (EQT) parameters and system control parameters (SCPs), and for controlling and/or coordinating the operation of said subsystems above.