Information code, information code producing method, information code reader, and system which uses information code
US9711113B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2013 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Dec 18, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2380/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A two-dimensional information code is provided. In the code area of this information code, there are formed a specification pattern region in which predetermined-shape specification patterns, such as position detecting patterns, are arranged, a data recording region in which data are recorded using plural types of cells, and an error-correction code recording region in which error correction codes are arranged using the plural types of cells. In the code area, a free space is formed at a position located outside the specification pattern region, the data recording region, and the error-correction code recording region. Data are not recorded by cells in the free space and error correction on the error correction codes is not applied to the free space. The free space has a size larger in area than a single cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.