Method and device to timestamp a digital image
US10924290B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 30, 2017 |
| Grant date | Feb 16, 2021 |
| Priority date | — |
| Expiry date | Nov 15, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/121
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The method and device are intended to prove the posteriority date (P) and anteriority date (A) of a digital image (IN) including building with a first server a previously unknown code (C) and transmitting this code (C) at the posteriority date (P), acquiring the digital image including a joint representation of a subject (S) and the code (C), computing an electronic fingerprint (EIN) of the digital image (IN), receiving with a second server at the anteriority date (A) the electronic fingerprint (EIN), inserting a combination (EIN+A) of the electronic fingerprint (EIN) and the anteriority date (A) in a block chain and possibly retrieving and sending back with a third server the recorded posteriority (P) and anteriority (A) dates from the reception of a new digital image (IN2).The disclosure is intended in particular to prove with images the correct performance of clinical protocol steps in clinical trials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.