U.S. patents available from 1976 to present.
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Dynamic security for digital television receivers

Patent 6948183 Issued on September 20, 2005. Estimated Expiration Date: Icon_subject November 20, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

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Graphical network security policy management
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Issued on: 11/19/2002
Inventor: Wiegel

More ...

Inventor

Assignee

Application

No. 09716682 filed on 11/20/2000

US Classes:

725/25, ACCESS CONTROL OR BLOCKING725/140, Programmable or upgradeable370/432, Messages addressed to multiple destinations348/731, Tuning380/232, Including authentication725/39, Electronic program guide709/229Network resources access controlling

Examiners

Primary: Miller, John
Assistant: Beliveau, Scott

Attorney, Agent or Firm

Foreign Patent References

  • 0 732 850 EP 09/01/1996
  • 0 752 786 EP 01/01/1997
  • 0 909 094 EP 04/01/1999

International Class

H04N007/16

Abstract

A system that allows service providers, consumer electronic (CE) manufacturers or standards bodies to define flexible security policies (110) for the execution of downloaded applications (120) on digital television (DTV) receivers (160). The current receiver environment in which a software application is to be run is evaluated. For example, environmental factors such as time of day, date, channel currently tuned in, parental lockout status, grouping of major and minor virtual channels, and so forth, may be considered. An access controller (168) determines if the receiver's environmental factors satisfy the conditions for granting a permission to a downloadable application to allow access to the receiver functions (161), receiver resources and user private data. The security policy can be modified by installing or downloading a new security policy (110), or modified by a user with the provision of an appropriate interface. A Java code-implemented embodiment is disclosed.

Other References

  • Evain, J.P., “The Multimedia Home Platform,” EBU Technical Review, No. 275, Mar. 21, 1998, pp. 4-10.
  • Thrift, P. et al., “JTV—Java-enabled Television,” Proceedings of the SPIE, vol. 3228, Nov. 4, 1997, pp. 117-122.
  • Cutts, D., “DVB Conditional Access,” Electronics & Communication Engineering Journal, vol. 9, No. 1, Feb. 1, 1997, pp. 21-27.
  • EBU Project Group, “Functional Model of a Conditional Access System,” EBU Technical Review, No. 266, Dec. 21, 1995, pp. 64-77.
  • Gong, Li et al., “Going Beyond the Sandbox: An Overview of the New Security Architecture in the Java™ Development Kit 1.2,” In Proceedings of the USENIX Symposium on Internet Technologies and Systems, Monterey, California, Dec., 1997.
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