US Patent No: 5,414,819

Number of patents in Portfolio can not be more than 2000

Optical interconnection network

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Abstract

An interconnection network for interconnection in parallel of a large number (N) of processing elements (PE). The network includes three serial switching stages. The first stage in which the processing elements arc grouped in r clusters of k processing elements each comprising many small fast electronic switches, one for each cluster. The second stage comprises a large number (N) of optical channels, one for each of the N processing elements. The third stage comprises k photodetectors for each of the clusters and electronic switches of the type in the first stage. Each cluster controls k light sources, one for each channel and k photodetectors in the cluster. Interconnection between processing elements in a common cluster are made solely by way of an electronic switch. Interconnection between processing elements in different clusters is made via the optical channels and one or two of the electronic switches.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
NEC CORPORATIONTOKYO17429

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Redmond, Ian Boulder, CO 5 44
Schenfeld, Eugen Monmouth Junction, NJ 20 159

Cited Art

Patent Info (Count) # Cites Year
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
5,093,890 Optical bus for computer systems 26 1990
 
JDS UNIPHASE CORPORATION (1)
5,255,332 NxN Optical crossbar switch matrix 124 1992
 
NORTHROP GRUMMAN SYSTEMS CORPORATION (1)
5,175,824 Crossbar switch connected modular multiprocessor system with processor timing relationship selected and synchronized to be appropriate for function being performed 31 1989
 
TEXAS INSTRUMENTS INCORPORATED (1)
5,155,778 Optical switch using spatial light modulators 73 1991
 
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY (1)
4,630,883 Optical waveguide apparatus and method for manufacturing 32 1983

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
MICRON TECHNOLOGY, INC. (16)
7,836,252 System and method for optimizing interconnections of memory devices in a multichip module 1 2002
7,366,864 Memory hub architecture having programmable lane widths 1 2004
7,590,797 System and method for optimizing interconnections of components in a multichip memory module 1 2004
7,392,331 System and method for transmitting data packets in a computer system having a memory hub architecture 7 2004
7,805,586 System and method for optimizing interconnections of memory devices in a multichip module 2 2006
7,596,641 System and method for transmitting data packets in a computer system having a memory hub architecture 1 2006
7,489,875 System and method for multiple bit optical data transmission in memory systems 1 2006
7,461,286 System and method for using a learning sequence to establish communications on a high-speed nonsynchronous interface in the absence of clock forwarding 5 2006
7,411,807 System and method for optically interconnecting memory devices 2 2006
7,382,639 System and method for optically interconnecting memory devices 1 2006
7,596,675 Memory hub architecture having programmable lane widths 3 2008
8,015,384 Memory hub architecture having programmable lane widths 0 2009
7,949,803 System and method for transmitting data packets in a computer system having a memory hub architecture 0 2009
8,190,819 System and method for optimizing interconnections of memory devices in a multichip module 0 2010
8,438,329 System and method for optimizing interconnections of components in a multichip memory module 0 2011
8,346,998 System and method for transmitting data packets in a computer system having a memory hub architecture 0 2011
 
ROUND ROCK RESEARCH, LLC (6)
7,546,435 Dynamic command and/or address mirroring system and method for memory modules 0 2007
7,370,134 System and method for memory hub-based expansion bus 23 2007
7,557,601 Memory module and method having improved signal routing topology 2 2007
7,746,095 Memory module and method having improved signal routing topology 2 2009
7,899,969 System and method for memory hub-based expansion bus 0 2009
8,117,371 System and method for memory hub-based expansion bus 0 2011
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (3)
6,922,294 Optical communication assembly 1 2003
6,836,015 Optical assemblies for transmitting and manipulating optical beams 0 2003
8,089,133 Optical assemblies for transmitting and manipulating optical beams 0 2004
 
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) (2)
5,504,824 Three stage switching unit 1 1995
6,307,859 Device and method related to telecommunication networks 3 1997
 
FUJI XEROX CO., LTD. (1)
6,651,139 Multiprocessor system 54 2000
 
FUJITSU LIMITED (1)
5,689,661 Reconfigurable torus network having switches between all adjacent processor elements for statically or dynamically splitting the network into a plurality of subsystems 36 1996
 
INTEL CORPORATION (1)
7,496,249 Optical and/or electrical communications fabrics in circuit boards and/or other composite structures 2 2005
 
NEC CORPORATION (1)
6,034,821 Optomechanical components for use as optical interconnects 23 1997
 
ROCKSTAR BIDCO, LP (1)
7,187,865 Hybrid photonic/electronic switching in a multi-channel network 0 2001
 
SAMSUNG ELECTRONICS CO., LTD. (1)
6,069,986 Cluster system using fibre channel as interconnection network 2 1998
 
SOLUS MICRO TECHNOLOGIES, INC. (1)
6,430,333 Monolithic 2D optical switch and method of fabrication 17 2000
 
TEXAS INSTRUMENTS INCORPORATED (1)
7,203,398 Compact DMD-based optical module 3 2003