Optoelectronic code reading apparatus and method of reading codes
AssigneeSick AG
InventorsKlemens Wehrle, Andreas Bierer, Björn Denz
Life of this patent
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Abstract
An optoelectronic code reading apparatus is provided that has at least one camera-based code reader having an image sensor for recording image data from a reading zone, that has a control and evaluation unit that comprises a decoding unit for locating code zones in the image data and for reading their code content, and that has a filter unit to determine whether a multiple reading has taken place in which a plurality of codes were read. In this respect, the filter unit is furthermore configured to check the geometry of the code zones in the case of a multiple reading to identify a valid code.
Claims16
An optoelectronic code reading apparatus, comprising:
- at least one camera-based code reader having an image sensor for recording image data from a reading zone,
- a control and evaluation unit comprising a decoding unit for locating code zones in the image data and for reading code content from the code zones;
- and
- a filter unit to determine whether a multiple reading has taken place in which a plurality of codes of different content were read, with the filter unit further being configured to check a geometry of the code zones in the case of a multiple reading in order to decide which of the plurality of read codes is a valid code and which of the plurality of read codes is an accidentally read code.
A method of reading codes, comprising the steps of:
- recording image data from a reading zone, wherein code zones are located therein;
- reading code content of the code zones;
- and
- determining whether a multiple reading has taken place in which a plurality of codes of different content were read, wherein a geometry of the code zones is checked in the case of a multiple reading in order to decide which of the plurality of read codes is a valid code and which of the plurality of read codes is an accidentally read code.
Dependencies are inferred from the claim text.