Patent ID: 8517272
Filing Date: 2013-08-27
Classification: G06K

Abstract:
1. A method of decoding a barcode within an imaging field of view of an imaging system that includes an imaging sensor, the method comprising: generating a first illumination with an illumination source; directing the first illumination to pass through an aperture to generate an illumination pattern for defining an illumination field of view that is configured to indicate a boundary surrounding the imaging field of view of the imaging system, wherein the first illumination is configured to have the intensity thereof change with time to cause an intensity variation of the illumination pattern, with the intensity variation being perceivable by a human user; detecting light from the barcode with an array of photosensitive elements in the imaging sensor to create imaging data during an exposure time period while the barcode is illuminated by a second illumination at least during a part of the exposure time period; and processing the imaging data to decode an image of the barcode.