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US Patent 6745245 - Managing access to set-top box objects using television conditional access system
US Patent Issued on June 1, 2004
Estimated Patent Expiration Date:
April 7, 2019Estimated 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.
Estimated Patent Expiration Date:
April 7, 2019Estimated 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.AbstractMethods for using a conditional access system to modify access control information maintained at a set-top box or another client system. The access control information regulates the availability of information or entertainment services at the client or controls the ability of scripts executed at the client to access objects defined at the client. The conditional access system can be a conventional conditional access, such as those used by cable television providers, that has been adapted to modify the access control information. The access control information includes multiple entries, each being referenced by a token identifier. The conditional access system transmits a command and an accompanying token to the client to instruct the client how to modify the access control information. The entry that is to be modified is identified by comparing the token with the token identifiers. By modifying access control information in this manner, the entity that operates the conditional access system is capable of regulating the availability of resources or services at the client. For example, a selected level of a tiered information service can be made available to the client. | InventorAssigneeApplicationNo. 09287247 filed on 04/07/1999US Classes:709/229, Network resources access controlling709/225, Computer network access regulating709/227, COMPUTER-TO-COMPUTER SESSION/CONNECTION ESTABLISHING709/228, Session/connection parameter setting725/110, Connection to external network at receiver (e.g., set-top box)380/239, Encrypted code control signal380/279, Key distribution center713/155, Central trusted authority provides computer authentication713/156, By certificate713/172Intelligent tokenField of Search713/170, Authentication of an entity and a message713/166, Security levels713/167, Object protection713/168, Particular communication authentication technique713/169, Mutual entity authentication713/171, Having key exchange713/172, Intelligent token713/155, Central trusted authority provides computer authentication713/156, By certificate709/229, Network resources access controlling709/227, COMPUTER-TO-COMPUTER SESSION/CONNECTION ESTABLISHING709/228, Session/connection parameter setting709/225, Computer network access regulating725/86, USER-REQUESTED VIDEO PROGRAM SYSTEM725/25, ACCESS CONTROL OR BLOCKING725/27, Of specific channel725/28, Of specific program (e.g., based on program rating)725/31, With encryption or scrambling of video signal725/110, Connection to external network at receiver (e.g., set-top box)725/118, Transmission network725/119, Having significant intermediate network unit (e.g., hub, substation, etc.)380/239, Encrypted code control signal380/240, Including addressed decoder control signal380/241, Having program ID or authorization380/242, Having command signal for receiver380/210, Video electric signal modification (e.g., scrambling)380/229, Including authentication380/259, Symmetric key cryptography380/279, Key distribution center380/278Key distributionExaminersPrimary: Chin, WellingtonAssistant: Ho, Chuong Attorney, Agent or FirmUS Patent References5815195, Subscriber information maintenance system and methodsIssued on: 09/29/1998 Inventor: Tam6105134, Verification of the source of program information in a conditional access system Issued on: 08/15/2000 Inventor: Pinder, et al.6256733, Access and storage of secure group communication cryptographic keys Issued on: 07/03/2001 Inventor: Thakkar, et al.6418472, System and method for using internet based caller ID for controlling access to an object stored in a computer Issued on: 07/09/2002 Inventor: Mi, et al.6493874, Set-top electronics and network interface unit arrangement Issued on: 12/10/2002 Inventor: Humpleman6510519, Conditional access system Issued on: 01/21/2003 Inventor: Wasilewski, et al.6516412, Authorization of services in a conditional access system Issued on: 02/04/2003 Inventor: Wasilewski, et al.6523067, System and method for using internet based caller ID for controlling access to an object stored in a computer Issued on: 02/18/2003 Inventor: Mi, et al.6526508Source authentication of download information in a conditional access system Issued on: 02/25/2003 Inventor: Akins, III, et al. International ClassG06F 1516 |
