Memory system
US11468159B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2020 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | Apr 2, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3247
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A memory system includes a nonvolatile memory including user areas, a volatile memory, a battery, and a controller configured to, when the volatile memory maintains first information indicating an access to a user area is permitted and a verification value upon startup of the system, determine whether the information is validated by the value, and upon determining that the information is validated, permit an access to the user area and prohibit the access to any other area, and when the volatile memory does not maintain the information and value, or the information is not validated, prohibit an access to any user area, and thereafter, upon receipt of a command and authentication information from the host, permit an access to the user area requested by the command, and generate and store in the volatile memory the information and the value for validating the generated information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.