Data access protection for computer systems
US9858229B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2014 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | Jan 22, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4282
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A protection circuit can be used with a computer system having a master device and at least one slave device that are connected by an inter-integrated circuit (I2C) bus. A first access request is received that includes an address that identifies a first slave device. In response to a permissible mode, the first access request is communicated to the first slave device using the I2C bus. A sticky protection bit can be set. In response to the sticky protection bit being set, the protection circuit can be placed in a protected mode. A second access request is received. The second access request can be determined to be a protected access to the first slave device. In response to the determining and the protected mode, the second access request to the first slave device can be denied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.