Control server for sharing data using distributed ledger, data sharing system with distributed ledger, and control program for sharing data with distributed ledger
US12248591B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2019 |
| Grant date | Mar 11, 2025 |
| Priority date | — |
| Expiry date | Apr 30, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2141
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Upon receiving a usage request that includes a file identifier and a version identifier from a user terminal 20, a control server 10 transmits a file request that is based on the usage request to a file management system, and transmits a permission information request that is based on the usage request to a distributed ledger system. Upon receiving the file request, the file management system acquires the file that corresponds to the combination of the file identifier and the version identifier and transmits the file to the control server 10. Upon receiving the permission information request, the distributed ledger system acquires permission information that corresponds to the combination of the file identifier and the version identifier from a distributed ledger, and transmits the permission information to the control server 10. The control server 10 transmits the file to the user terminal 20 if the user of the user terminal has viewing permission based on the permission information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.