Packet switch

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5177736
SERIAL NO

07649966

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A packet switch comprises a switch having a plurality of input lines and a plurality of output lines for sending a packet supplied from each of the input lines to one of the output lines selected in accordance with routing information attached to each packet, a plurality of pairs of input/output lines connected to terminals or other switches, a plurality of line interface provided one for each of the input/output lines and each connected to one of the input lines and one of the output lines of the switch, and a controller connected to one of the input lines and one of the output lines of the switch. Control information is communicated between the controller and the line interfaces or the switch via a control packet through the switch. The switch may be a plurality of multi-stage connected unit switches and input lines and output lines thereof are divided into a plurality of groups. The controller is connected to an input line of one of first stage unit switches and an output line of one of final stage unit switches of one of the switch groups.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
HITACHI, LTD.TOKYO13689
HITACHI SOFTWARE ENGINEERING CO., LTD.TOKYO84

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kihara, Yoshiaki Yokohama, JP 1 21
Kubo, Akinori Kawasaki, JP 2 68
Tanabe, Shiro Hachioji, JP 23 1336

Cited Art Landscape

Patent Info (Count) # Cites Year
 
BELL COMMUNICATIONS RESEARCH, INC. (1)
* 4782478 Time division circuit switch 41 1987
 
BELL TELEPHONE LABORATORIES, INCORPORATED (4)
* 4486877 Packet switching loop-around network and facilities testing 59 1982
* 4561090 Integrated self-checking packet switch node 45 1983
* 4550397 Alternate paths in a self-routing packet switching network 71 1983
* 4670871 Reliable synchronous inter-node communication in a self-routing network 58 1985
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
6327244 Packet handler 5 1998
 
TTI INVENTIONS A LLC (1)
* 5432785 Broadband private virtual network service and system 90 1994
 
HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP (1)
* 6125112 Non-buffered, non-blocking multistage ATM switch 31 1998
 
ENTERASYS NETWORKS, INC. (1)
* 5905723 System for achieving scalable router performance 33 1995
 
ROCKSTAR CONSORTIUM US LP (1)
* 5694547 System for registration of clients in an ATM network providing for communication of client registration messages to a central manager 26 1996
 
FUJITSU LIMITED (1)
* 5550821 ATM remote maintenance connection establishing system 45 1994
 
HITACHI, LTD. (3)
* 5903544 Packet handler 17 1997
6850485 Packet handler 2 2001
7502380 Packet handler 0 2004
 
CONSTELLATION TECHNOLOGIES LLC (3)
* 5519707 Multiplexing of communications services on a virtual service path in an ATM network or the like 127 1992
* 5586267 Apparatus for providing for automatic topology discovery in an ATM network or the like 31 1995
* 5583991 Method for providing for automatic topology discovery in an ATM network or the like 16 1995
 
RPX CLEARINGHOUSE LLC (3)
* 5715396 Method for providing for automatic topology discovery in an ATM network or the like 22 1995
* 5664107 Method for providing for automatic topology discovery in an ATM network or the like 46 1995
* 5729685 Apparatus for determining the topology of an ATM network or the like Via communication of topology information between a central manager and switches in the network over a virtual service path 139 1996
 
NEC CORPORATION (1)
* 6982975 Packet switch realizing transmission with no packet delay 8 2000
 
THE BOEING COMPANY (1)
* 2002/0159,468 Method and system for administrative ports in a routing device 13 2001
 
Newton Communications, Inc. (1)
* 5313459 Private branch exchange system and methods for operating same 12 1992
 
TELCORDIA TECHNOLOGIES, INC. (1)
* 5432783 System and method for providing egress policing for broadband virtual private networks 24 1994
 
NIPPON TELEGRAPH AND TELEPHONE CORPORATION (1)
* 5265088 Cross-connection apparatus for B-ISDN 56 1992
 
NNPT, LLC (1)
6578086 Dynamically managing the topology of a data network 78 1999
 
TR TECHNOLOGIES FOUNDATION LLC (1)
* 2009/0141,719 TRANSMITTING DATA THROUGH COMMUINCATION SWITCH 5 2008
 
AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD. (2)
* 7609718 Packet data service over hyper transport link(s) 2 2003
* 2004/0037,313 Packet data service over hyper transport link(s) 36 2003
* Cited By Examiner