Patent ID: 6616044
Filing Date: 2003-09-09
Classification: G06K

Abstract:
A bar code scanner comprising:a scan window; a laser source for producing a scan beam emerging from the scan window and striking an object within range of the scan window to produce reflections from the scan beam off of the object, a portion of the reflections comprising light reentering the scan window; collection optics for collecting the light reentering the scan window; a photodetector for producing a photosignal based on the light collected by the collection optics; a time space module for processing the signal to estimate imaging information relating to the object producing the reflections, the time space module being operative to note a time at which the signal indicates that an event of interest has occurred, the time space module being further operative to note a position of the scan beam at the time an event of interest has occurred and to employ the information provided by the timing of events and the position of the scan beam at the occurrence of events to estimate imaging information relating to the object.