Traceability signature system, signature method and program product
US7331519B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2006 |
| Grant date | Feb 19, 2008 |
| Priority date | — |
| Expiry date | Jun 29, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/30
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A signature device having an item selection input section which accepts a selection of a group of items formed by combining an item delivered from at least one supplier and an item generated by itself, a path verification information updating section which updates path verification information to verify a delivery route included in the signature information on the delivered item, a signature information preparation section which prepares new signature information from a signature prepared by itself and the updated path verification information with respect to the selected item group, and a signature information transmitting section which transmits the new signature information to the signature verification device. The signature verification device receives the new signature information and verifies the delivery routes for all the items included in the selected item group based on the new signature information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.