Optical information reading device, optical information reading method, computer-readable program and recording medium
US9361504B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2013 |
| Grant date | Jun 7, 2016 |
| Priority date | — |
| Expiry date | Aug 21, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/1413
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
To prevent misreading of barcodes and to allow accurate outputting of bar data even when an element is damaged or blurred, an optical information reading device containing a computation means 23a for adding widths of 6 elements containing a bar and a space that are adjacent within one character to derive respective patterns of 2- through n-element added widths and for converting each of the patterns of 2- through n-element added widths into the module number for one character to obtain the module numbers of the patterns of the 2- through n-element added widths; an extraction means 23b for narrowing down the target characters to extract a candidate character wherein the target character is that each module number of the 2- through n-element widths is an integer with an error equal to or less than 1; and a search means 23d for comparing the extracted candidate character, having the module numbers of the patterns of the 2- through n-element added widths with the expected value character for evaluating the candidate character to search for an expected value character with the strongest correlation to the candidate character.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.