Barcode scanning system with a compensation circuit
US7306154B2 · kind B2 · utility
8Cited by
13References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 21, 2004 |
| Grant date | Dec 11, 2007 |
| Priority date | — |
| Expiry date | Oct 21, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10633
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A barcode scanning system is provided, which comprises an amplitude compensation circuit to change the amplitude of signals corresponding to each location on the barcode such that all the signals have the same amplitude. The changing of the amplitude may be determined according to an angular position or an oscillating velocity of an mirror. Preferably, the cutoff frequency of a low pass circuit in the barcode scanning system is variable according to the oscillating velocity or the angular position of the mirror too.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.