Digital watermarking without significant information loss in anonymized datasets
US11681825B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2016 |
| Grant date | Jun 20, 2023 |
| Priority date | — |
| Expiry date | Feb 7, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/608
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A computer-implemented process of altering original data in a dataset, in which original data is anonymised and a digital watermark is included in the anonymised data. Anonymising the original data incurs information loss, and the process of including the digital watermark does not add significant further information loss. The original data can be a tabular file, a relational or a non-relational database, or the results of interactive database queries. Anonymising the data is achieved using one or more techniques that perturb the original data, such as tokenisation, generalisation; data blurring, synthetic record insertion, record removal or re-ordering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.