Method for concealing data and data obfuscation device using the same
US10747854B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 17, 2019 |
| Grant date | Aug 18, 2020 |
| Priority date | — |
| Expiry date | Jul 17, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/16
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for concealing original data to protect personal information is provided. The method includes steps of: a data obfuscation device (a) if the original data is acquired, inputting the original data or its modified data into a learning network, and allowing the learning network to (i) apply a network operation to the original data or the modified data using learned parameters of the learning network and thus to (ii) output characteristic information on the original data or the modified data; and (b) updating the original data or the modified data via backpropagation using part of (i) 1-st losses calculated by referring to the characteristic information and its corresponding 1-st ground truth, and (ii) 2-nd losses calculated by referring to (ii-1) a task specific output generated by using the characteristic information (ii-2) a 2-nd ground truth corresponding to the task specific output, to thereby generate obfuscated data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.