Method and apparatus for generating and reading composite two-dimensional code
US11042791B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2018 |
| Grant date | Jun 22, 2021 |
| Priority date | — |
| Expiry date | Jan 23, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/06178
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is an apparatus for generating a composite two-dimensional code, comprising: a two-dimensional code encoding module 1, a two-dimensional code pattern generating module 2, a hidden information encoding module 3, a hidden information pattern generating module 4, a recoding region setting module 5, an pattern compositing module 6, and an output module 7. The two-dimensional code encoding module 1 converts the inputted two-dimensional code information into a binary codeword sequence to generate two-dimensional code coding information; the two-dimensional code pattern generating module 2 generates a two-dimensional code pattern based on the two-dimensional code coding information; the hidden information encoding module 3 converts the hidden information into a binary codeword sequence to generate recoding information; the recoding region setting module 5 sets, in the two-dimensional code pattern, a recoding region for encoding the hidden information; the hidden information pattern generating module 4 generates a hidden information coding pattern formed by dark-colored blocks and light-colored blocks based on the recoding information; and the pattern composing module 6 adjusts a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.