Patent Number: 6,307,937

Title: Method and apparatus for an adapter card providing conditional access in a communication system

Abstract: A method and apparatus for an adapter card, for use in a computer, to provide conditional access by the computer to incoming data streams while maintaining the security of information by maintaining a listing of addresses corresponding to data streams which the computer is authorized to receive, receiving and determining the address of a frame, determining whether the frame address matches an address maintained in an Access Table, and processing and transmitting only those frames of data streams which the computer is authorized to receive.

Inventors: Dillon; Douglas M. (Gaithersburg, MD), Cassagnol; Robert D. (Silver Spring, MD)

Assignee: Hughes Electronics Corporation

International Classification: G06F 21/00 (20060101); H04B 7/185 (20060101); H04L 29/06 (20060101); H04H 1/00 (20060101); H04L 12/56 (20060101); H04N 7/16 (20060101); G06F 1/00 (20060101); H04L 009/00 ()

Expiration Date: 10/23/2018