System, apparatus and method for restricting data access
US8191125B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2004 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Mar 29, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/454
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An embodiment comprises a semiconductor integrated circuit for restricting the rate at which data may be accessed from an external memory by a device coupled to the circuit. The rate of data access is restricted if the data access satisfies one or more conditions. For example, one of the conditions is that the device which is requesting the data is insecure. Another condition is that the requested data is privileged. A data access monitor is provided to monitor data accesses and to is arranged to generate an access signal to indicate whether the conditions are satisfied or not. A bandwidth comparator determines whether data access exceeds a threshold and, if so, the semiconductor integrated circuit is impaired to prevent further data access.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.