Patent ID: 6474556
Filing Date: 2002-11-05
Classification: B82Y,G02B,G06K,G07F,G07G

Abstract:
An automatic laser scanning bar code symbol reading system for automatically reading bar code symbols on packages transported through a 3-D scanning volume, said automatic laser scanning bar code symbol reading system comprising:a conveyor belt along which packages bearing bar code symbols are transported; a holographic-based bar code position detector, mounted above said conveyor belt, employing one or more laser beam sources and a holographic scanning disc for producing a first laser scanning pattern within said 3-D scanning volume, for scanning each said package transported along said conveyor belt, detecting the position of the bar code symbol on said package within said 3-D scanning volume, and automatically producing bar code position data specifying the position of the detected bar code symbol within said 3-D scanning volume; and a laser scanning bar code symbol reader, mounted above said conveyor belt, responsive to said bar code position data, and automatically steerable as so to laser scan said detected bar code symbol, and produce scan data indicative of said detected bar code symbol, and automatically process said produced scan data so as to automatically read said detected bar code symbol and produce symbol character data representative thereof.