06069647 is referenced by 150 patents and cites 5 patents.

A system featuring an interface unit connected to a programmable unit is described. The interface unit is capable of containing a time-sensitive key. The programmable unit is allowed to receive digital content from the interface unit upon establishing that the time-sensitive key is also contained therein.

Title
Conditional access and content security method
Application Number
9/15409
Publication Number
6069647
Application Date
January 29, 1998
Publication Date
May 30, 2000
Inventor
David W Aucsmith
Portland
OR, US
John M Acken
Palo Alto
CA, US
Robert R Sullivan
Pleasanton
CA, US
Agent
Blakely Sokoloff Taylor & Zafman
Assignee
Intel Corporation
CA, US
IPC
H04N 7/167
View Original Source