Patent · US Expired

Secure control of security mode

US7660986B1 · kind B1 · utility

25Cited by

23References

19Claims

0Family size

Assignee

General Instrument Corporation · US

Inventors

Xin Qiu · San Diego, US
Eric J. Sprunk · Carlsbad, US
Paul Moroney · Cardiff-by-the-Sea, US

Key dates

Filing date	May 23, 2000
Grant date	Feb 9, 2010
Priority date	—
Expiry date	May 23, 2020

Classification

Technology area (CPC H)Electricity
CPC primaryH04N21/26606
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A system to change security levels is used to change the level of security used in a secured processing system. The system uses a status indicator to designate the security level being implemented. The security level can be upgraded to allow a higher level of security to be implemented with relative ease. However, in order to change from a higher level of security to a lower level of security, an authorization code is utilized to confirm that the change in security is authorized.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.