System and method for noise reduction in a bar code signal
US9038917B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 1, 2012 |
| Grant date | May 26, 2015 |
| Priority date | — |
| Expiry date | Feb 1, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10851
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for reading a bar code are disclosed which may include transmitting light pulsed at a selected frequency to illuminate the bar code; converting light received at the bar code reader from the bar code into an electrical signal; transmitting the electrical signal through a signal conditioning circuit to filter and amplify the electrical signal, to thereby provide a conditioned electrical signal; sampling the conditioned electrical signal at the selected frequency; removing energy due to light scattering within a housing of the bar code reader from the sampled, conditioned electrical signal; generating one of a logical “1” and a logical “0” output based on a value of the signal generated by the step of removing; and resolving output from the step of generating into data indicative of information on the bar code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.