Optical reading device

A stationary optical reading device that reads a code attached to a workpiece being conveyed on a line, the optical reading device comprising:

• an illumination unit configured to emit light toward an area through which the workpiece passes;
• an imaging unit configured to receive the light emitted from the illumination unit and reflected from the area through which the workpiece passes and to generate a read image obtained by capturing an image of the area through which the workpiece passes;
• a processing unit including a first core that instructs a decoding process of the read image generated by the imaging unit and a plurality of second cores that acquire the read image instructed by the first core and execute a decoding process on the acquired read image;
• and
• an output unit that outputs decoding results generated by the plurality of second cores,
• wherein
• the first core instructs the second core, which is presumed to be capable of immediately executing the decoding process or executing a decoding process next to the decoding process being currently executed, to execute the decoding process, and
• the plurality of the second cores are configured to be capable of simultaneously performing a decoding process on the read images instructed by the first core at different timings.