Patent ID: 8104686
Filing Date: 2012-01-31
Classification: G06K

Abstract:
1. A bar code decoding device comprising: a portable housing; a lens assembly focusing an image onto a two dimensional image sensor; an illumination assembly; a control circuit in communication with said illumination assembly and said imaging assembly, wherein said control circuit is configured to operate in a “decode mode” and a “picture taking mode;” and a user interface facilitating selection between said decode mode and said picture taking mode; wherein said control circuit, when operating in said “decode mode” loads a “decode mode” initial exposure period value, captures a frame of image data utilizing said “decode mode” initial exposure period value, builds a histogram summarizing said captured frame, evaluates said histogram according to a “decode mode” histogram evaluation criteria, and adjusts said initial exposure period value depending on an outcome of said evaluation; wherein said control circuit, when operating in said “picture taking” mode loads a “picture taking mode” initial exposure period value, captures a frame of image data utilizing said initial “picture taking mode” initial exposure period value, builds a histogram summarizing said captured frame, evaluates said histogram according to a “picture taking mode” histogram evaluation criteria, and adjusts said initial exposure period value depending on an outcome of said evaluation, wherein said “decode mode” initial exposure period value is less than said “picture taking mode” initial exposure period value.