KEY EXCHANGE MECHANISM FOR
STREAMING PROTECTED MEDIA
CONTENT
Inventors: Shannon J. Chan, Bellevue, WA (US);
David M. Maymudes, Seattle, WA
(US)
Assignee: Microsoft Corporation, Redmond, WA (US)
Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 834 days.
Appl. No.: 09/882,810
Filed: Jun. 14, 2001
(Under 37 CFR 1.47)
Prior Publication Data
US 2003/0009668 Al Jan. 9, 2003
Int. CI.
G06F12/14 (2006.01)
H04L 9/00 (2006.01)
U.S. CI 713/171; 380/201; 380/277;
380/1; 725/25; 386/1
Field of Classification Search 713/171;
380/231,201,277; 725/25; 386/1; 360/1 See application file for complete search history.
References Cited
U.S. PATENT DOCUMENTS
6,272,283 Bl * 8/2001 Nguyen 386/94
6,314,518 Bl* 11/2001 Linnartz 713/176
6,405,203 Bl* 6/2002 Collart 707/10
6,546,193 Bl * 4/2003 Um et al 386/94
6,636,689 Bl * 10/2003 Stebbings 386/94
6,802,003 Bl * 10/2004 Gross et al 713/175
7,003,674 Bl * 2/2006 Hamlin 713/193
2001/0042043 Al* 11/2001 Shear et al 705/51
2002/0015494 Al* 2/2002 Nagal et al 380/201
FOREIGN PATENT DOCUMENTS
WO WO 00/59222 * 10/2000
OTHER PUBLICATIONS
"DirectShow (ActiveMovie)", http://www.compressionworks.com/ directshow.htm; 1 page; last modified on Feb. 17, 1999.* "PowerFile C20 FAQs,", http://www.dvdchanger.com/Faq/ faq pub all.html; 4 pages; printed May 17, 2001.
* cited by examiner
Primary Examiner—Taghi T. Arani
(74) Attorney, Agent, or Firm—Lee & Hayes, PLLC
