Apparatus and method for distributing management keys in a multicast domain

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7269728
SERIAL NO

09400132

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A method and apparatus for distributing keys in a multicast domain is provided. In a secure multicast domain, a request to join a multicast group for a time period occurs. A key distributor which controls access to the multicast data group determines if the request will be accepted. If the request is accepted the key distributor assigns the member to a virtual channel, wherein each virtual channel is defined by a time period. A data group key is forwarded to the member as is a virtual channel key. The member can then receive and decode events from the data group on the assigned virtual channel.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
RPX CLEARINGHOUSE LLCSAN FRANCISCO, CA1977

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Yunzhou Lowell, MA 22 558

Cited Art Landscape

Patent Info (Count) # Cites Year
 
AT&T Bell Laboratories (1)
* 5150358 Serving constant bit rate traffic in a broadband data switch 92 1990
 
CISCO TECHNOLOGY, INC. (1)
* 5359601 Apparatus providing dynamic virtual service selection in a multi-service communications system 164 1993
 
LIFESIZE, INC. (1)
* 5737011 Infinitely expandable real-time video conferencing system 219 1995
 
THOMSON LICENSING (1)
* 5642153 Consumer interface for a digital television system 152 1994
 
FUJITSU LIMITED (1)
* 6215877 Key management server, chat system terminal unit, chat system and recording medium 58 1998
 
ORACLE AMERICA, INC. (3)
* 6330671 Method and system for secure distribution of cryptographic keys on multicast networks 66 1997
* 6195751 Efficient, secure multicasting with minimal knowledge 113 1998
* 6295361 Method and apparatus for multicast indication of group key change 116 1998
 
AT&T CORP. (1)
* 6073235 Private broadcast communication system and method for private broadcast communication over a wired or wireless network 49 1997
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (4)
* 2005/0283,447 Charging mechanism for multicasting 17 2005
* 2013/0268,712 GENERAL INPUT/OUTPUT ARCHITECTURE, PROTOCOL AND RELATED METHODS TO IMPLEMENT FLOW CONTROL 4 2012
* 2013/0254,451 GENERAL INPUT/OUTPUT ARCHITECTURE, PROTOCOL AND RELATED METHODS TO IMPLEMENT FLOW CONTROL 4 2012
* 2015/0178,241 GENERAL INPUT/OUTPUT ARCHITECTURE, PROTOCOL AND RELATED METHODS TO IMPLEMENT FLOW CONTROL 2 2014
 
Brandenburgishe Technishe Universitat Cottbus (1)
* 7957320 Method for changing a group key in a group of network elements in a network system 10 2006
 
TOSHIBA SOLUTIONS CORPORATION (2)
* 8200977 Group signature system, device, and program 1 2010
* 2010/0169,656 GROUP SIGNATURE SYSTEM, DEVICE, AND PROGRAM 10 2010
 
CISCO TECHNOLOGY, INC. (2)
* 8750507 Dynamic group creation for managed key servers 4 2010
* 2011/0182,426 Dynamic Group Creation for Managed Key Servers 6 2010
 
INTEL CORPORATION (6)
9088495 General input/output architecture, protocol and related methods to implement flow control 3 2012
* 9071528 General input/output architecture, protocol and related methods to implement flow control 2 2012
* 9049125 General input/output architecture, protocol and related methods to implement flow control 2 2012
8819306 General input/output architecture with PCI express protocol with credit-based flow control 5 2012
9602408 General input/output architecture, protocol and related methods to implement flow control 0 2013
9565106 General input/output architecture, protocol and related methods to implement flow control 0 2013
 
FRANCE TELECOM (1)
* 8103255 Method and a device for associating a terminal with a user account 0 2007
 
SAMSUNG ELECTRONICS CO., LTD. (4)
* 7835525 Cryptographic method using dual encryption keys and a wireless local area network (LAN) system therefor 1 2003
* 2004/0005,058 Cryptographic method using dual encryption keys and a wireless local area network (LAN) system therefor 7 2003
* 8374353 Method and apparatus for updating a group key 0 2007
* 2008/0075,286 Method and apparatus for updating a group key 0 2007
 
KABUSHIKI KAISHA TOSHIBA (1)
* 2009/0067,345 RADIO TERMINAL, RADIO SYSTEM, AND PROGRAM 2 2008
 
KOOLSPAN, INC. (2)
* 9008312 System and method of creating and sending broadcast and multicast data 1 2012
* 2013/0121,491 SYSTEM AND METHOD OF CREATING AND SENDING BROADCAST AND MULTICAST DATA 0 2012
* Cited By Examiner

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
11.5 Year Payment $7400.00 $3700.00 $1850.00 Mar 11, 2019
Fee Large entity fee small entity fee micro entity fee
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00