초록

An optical scanner with plural scan beam generation. Scan angle stress is configured in the beam generation.

대표청구항 ▼

[ We claim:] [1.] A device for reading a bar code, said device comprising:a) a scanner for scanning the bar code with a plurality of scan patterns using a plurality of lasers;b) a sensor for sensing light reflected from the bar code on a first scan and for producing an analog signal representative o

[ We claim:] [1.] A device for reading a bar code, said device comprising:a) a scanner for scanning the bar code with a plurality of scan patterns using a plurality of lasers;b) a sensor for sensing light reflected from the bar code on a first scan and for producing an analog signal representative of the bar code indicia;c) a comparator for comparing a first signal corresponding to the analog signal against a threshold range to identify whether features of the first signal fall within the threshold range; andd) an adjuster for varying a parameter of the device on the second scan if the comparison is unsuccessful.