Hidden identification
US7457967B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2002 |
| Grant date | Nov 25, 2008 |
| Priority date | — |
| Expiry date | Jun 21, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2141
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
One or more embodiments of the invention provide a method, apparatus, and article of manufacture for limiting unauthorized access to digital services. A hidden non-modifiable identification number is embedded into a nonvolatile memory component. The nonvolatile memory component is used to contain state information to provide desired functionality and enforce one or more security policies for accessing the digital services. Also, the hidden number uniquely identifies a device containing the nonvolatile memory component and access to the digital services is based on access rights associated with the hidden number. Once embedded, access to the nonvolatile memory component is isolated such that access to the identification number is limited to a fixed state custom logic block, the nonvolatile memory component is protected from modification such that it is read only, and the nonvolatile memory component is not directly accessible via a system bus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.