Dynamic security for digital television receivers
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.Patent ReferencesMethod and apparatus for screening audio-visual materials presented to a subscriber Multiple resource or security contexts in a multithreaded application Method and system for monitoring the use of rented software Transmitting high bandwidth network content on a low bandwidth communications channel during off peak hours Flexible and dynamic derivation of permissions Typed, parameterized, and extensible access control permissions Programmable video channel controller Electronic programming system and method Authorization and access control of software object residing in set-top terminals Graphical network security policy management InventorAssigneeApplicationNo. 09716682 filed on 11/20/2000US 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 controllingExaminersPrimary: Miller, JohnAssistant: Beliveau, Scott Attorney, Agent or FirmForeign Patent References
International ClassH04N007/16AbstractA 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
Field of SearchSYSTEM ACCESS CONTROL BASED ON USER IDENTIFICATION BY CRYPTOGRAPHYSolely password entry (no record or token) ACCESS CONTROL OR BLOCKING Programmable or upgradeable Interactive data transmitted in video signal band (e.g., VBI or HBI data) Programmable or upgradeable SYSTEM FOR AWARDING COUPON, TOKEN, OR CREDIT By data encoded in video signal (e.g., VBI data) | |
