Nonvolatile semiconductor memory and method of managing information in information distribution system
US7043615B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2000 |
| Grant date | May 9, 2006 |
| Priority date | — |
| Expiry date | Oct 15, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/2022
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
There is provided semiconductor memory capable of reconfiguring an area to be given an authentication key and access limitation, and there is implemented an information distribution system having an advanced security function using the semiconductor memory.Part of a storage area in the semiconductor memory stores information about the area to be given the authentication key and the access limitation. Alternatively, the authentication key is stored in units of data to be authenticated for limiting an access to stored information. Information is protected doubly by storing encrypted information in the area provided with the access limitation according to the above-mentioned method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.