US Patent No: 4,700,187

Number of patents in Portfolio can not be more than 2000

Programmable, asynchronous logic cell and array

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

An asynchronous logic cell and a two- or three dimensional array formed of such cells. Each cell comprises a number of exclusive-OR gates, Muller C-elements and programmable switches. The logic cell is reprogrammable and may even be reprogrammed dynamically, such as to perform recursive operations or simply to make use of hardware which is temporarily idle. Programming is accomplished by setting the states of the switches in each cell. A user-friendly programming environment facilitates the programming of the switches. The array can be used to implement any circuit capable of being modelled as a broad class of Petri Nets. Configurations for (i.e., programs for setting cell switches to create) circuit blocks such as adders, multiplexers, buffer stacks, and so forth, may be stored in a library for future reference. With an adequate library, custom hardware can be designed by simply mapping stored blocks onto chips and connecting them together. Further, because the array is regular and switch settings can produce logical wires, crossovers, connections and routings running both 'horizontally' and 'vertically', it is in general possible to 'wire around' defective elements. If a large wafer contains defective cells, those cells can simply be avoided and bypassed, with the remainder of the wafer remaining useful.

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

First Claim

See full text

all claims..

Related Publications

Loading Related Publications... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
APPLE COMPUTER, INC.CUPERTINO, CA598
ATMEL CORPORATIONSAN JOSE, CA1301

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Furtek, Frederick C Menlo Park, CA 19 1477

Cited Art Landscape

Patent Info (Count) # Cites Year
 
MASSACHUSETTS INSTITUTE OF TECHNOLOGY (2)
4,293,783 Storage/logic array 86 1978
RE31287 Asynchronous logic array 15 1980
 
FUJITSU LIMITED (1)
4,611,236 Masterslice semiconductor device 25 1984
 
GENERAL SEMICONDUCTOR, INC. (1)
4,414,547 Storage logic array having two conductor data column 80 1981
 
HARRIS CORPORATION (1)
4,240,094 Laser-configured logic array 84 1978
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
4,467,439 OR Product term function in the search array of a PLA 17 1981
 
LOCKHEED MARTIN CORPORATION (1)
4,600,846 Universal logic circuit modules 38 1983
 
SIEMENS AKTIENGESELLSCHAFT (1)
4,331,950 Broad band switching network 9 1980
 
Signetics Corporation (1)
4,422,072 Field programmable logic array circuit 52 1981
 
Telesis Corporation of Delaware, Inc. (1)
4,451,895 Interactive computer aided design system 119 1983
 
Other [Check patent profile for assignment information] (1)
4,336,601 Rewritable programmable logic array 28 1979

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
ACTEL CORPORATION (28)
5,457,410 Architecture and interconnect scheme for programmable logic circuits 215 1993
5,850,564 Scalable multiple level tab oriented interconnect architecture 84 1995
6,051,991 Architecture and interconnect scheme for programmable logic circuits 30 1997
6,433,580 Architecture and interconnect scheme for programmable logic circuits 21 1998
6,417,690 Floor plan for scalable multiple level tab oriented interconnect architecture 7 1998
6,329,839 Method and apparatus for universal program controlled bus architecture 45 1999
6,300,793 Scalable multiple level tab oriented interconnect architecture 25 1999
6,320,412 Architecture and interconnect for programmable logic circuits 3 1999
6,462,578 Architecture and interconnect scheme for programmable logic circuits 6 2000
6,507,217 Architecture and interconnect scheme for programmable logic circuits 25 2001
6,504,399 Method and apparatus for universal program controlled bus architecture 4 2001
7,009,422 Floor plan for scalable multiple level tab oriented interconnect architecture 3 2001
6,597,196 Architecture and interconnect scheme for programmable logic circuits 22 2002
6,624,658 Method and apparatus for universal program controlled bus architecture 2 2002
6,703,861 Architecture and interconnect scheme for programmable logic circuits 96 2002
6,747,482 Architecture and interconnect scheme for programmable logic circuits 13 2003
7,017,136 Architecture and interconnect scheme for programmable logic circuits 3 2003
6,975,138 Method and apparatus for universal program controlled bus architecture 39 2004
6,989,688 Architecture and interconnect scheme for programmable logic circuits 1 2004
7,382,156 Method and apparatus for universal program controlled bus architecture 39 2005
7,078,933 Architecture and interconnect scheme for programmable logic circuits 3 2005
7,409,664 Architecture and interconnect scheme for programmable logic circuits 2 2005
7,126,375 Floor plan for scalable multiple level tab oriented interconnect architecture 0 2006
7,142,012 Architecture and interconnect scheme for programmable logic circuits 12 2006
7,646,218 Architecture and interconnect scheme for programmable logic circuits 1 2008
7,830,173 Method and apparatus for universal program controlled bus architecture 3 2009
7,915,918 Method and apparatus for universal program controlled bus architecture 0 2010
8,289,047 Architecture and interconnect scheme for programmable logic circuits 0 2010
 
CADENCE DESIGN SYSTEMS, INC. (17)
5,452,231 Hierarchically connected reconfigurable logic assembly 142 1994
5,448,496 Partial crossbar interconnect architecture for reconfigurably connecting multiple reprogrammable logic devices in a logic emulation system 108 1994
5,477,475 Method for emulating a circuit design using an electrically reconfigurable hardware emulation apparatus 62 1994
5,657,241 Routing methods for use in a logic emulation system 38 1995
5,612,891 Hardware logic emulation system with memory capability 62 1995
5,644,515 Hardware logic emulation system capable of probing internal nodes in a circuit design undergoing emulation 39 1995
5,841,967 Method and apparatus for design verification using emulation and simulation 75 1996
5,884,066 Method and apparatus for a trace buffer in an emulation system 18 1997
5,960,191 Emulation system with time-multiplexed interconnect 82 1997
5,970,240 Method and apparatus for configurable memory emulation 51 1997
6,421,251 Array board interconnect system and method 31 1998
6,134,516 Simulation server system and method 97 1998
6,026,230 Memory simulation system and method 78 1998
6,389,379 Converification system and method 146 1998
6,058,492 Method and apparatus for design verification using emulation and simulation 42 1998
6,377,912 Emulation system with time-multiplexed interconnect 70 1999
6,842,729 Apparatus for emulation of electronic systems 12 2002
 
ADVANTAGE LOGIC, INC. (14)
6,975,139 Scalable non-blocking switching network for programmable logic 13 2004
7,460,529 Interconnection fabric using switching networks in hierarchy 7 2004
7,256,614 Scalable non-blocking switching network for programmable logic 9 2005
7,423,453 Efficient integrated circuit layout scheme to implement a scalable switching network used in interconnection fabric 9 2006
7,417,457 Scalable non-blocking switching network for programmable logic 9 2007
7,557,613 Scalable non-blocking switching network for programmable logic 9 2008
7,768,302 Scalable non-blocking switching network for programmable logic 3 2009
7,999,570 Enhanced permutable switching network with multicasting signals for interconnection fabric 0 2009
7,863,932 Scalable non-blocking switching network for programmable logic 1 2010
7,986,163 Scalable non-blocking switching network for programmable logic 2 2010
8,106,682 Permutable switching network with enhanced interconnectivity for multicasting signals 1 2010
8,242,807 Scalable non-blocking switching network for programmable logic 1 2011
8,395,415 Enhanced permutable switching network with multicasting signals for interconnection fabric 0 2011
8,698,519 Scalable non-blocking switching network for programmable logic 0 2012
 
XILINX, INC. (14)
4,870,302 Configurable electrical circuit having configurable logic elements and configurable interconnects 720 1988
5,448,493 Structure and method for manually controlling automatic configuration in an integrated circuit logic block array 43 1989
RE34363 Configurable electrical circuit having configurable logic elements and configurable interconnects 588 1991
5,337,255 Method for implementing set/reset synchronously or asynchronously in a programmable logic device 26 1991
6,292,018 Configurable cellular array 32 1996
6,664,808 Method of using partially defective programmable logic devices 22 2001
6,817,006 Application-specific testing methods for programmable logic devices 31 2002
7,143,295 Methods and circuits for dedicating a programmable logic device for use with specific designs 11 2002
7,007,250 Application-specific methods useful for testing look up tables in programmable logic devices 18 2003
7,127,697 Methods of utilizing programmable logic devices having localized defects in application-specific products 13 2003
7,216,277 Self-repairing redundancy for memory blocks in programmable logic devices 13 2003
7,219,314 Application-specific methods for testing molectronic or nanoscale devices 8 2004
6,891,395 Application-specific testing methods for programmable logic devices 24 2004
7,394,708 Adjustable global tap voltage to improve memory cell yield 17 2005
 
ATMEL CORPORATION (11)
4,918,440 Programmable logic cell and array 165 1986
4,845,633 System for programming graphically a programmable, asynchronous logic cell and array 72 1987
5,089,973 Programmable logic cell and array 41 1989
5,019,736 Programmable logic cell and array 81 1989
5,144,166 Programmable logic cell and array 346 1990
5,155,389 Programmable logic cell and array 53 1991
5,894,565 Field programmable gate array with distributed RAM and increased cell utilization 116 1996
6,026,227 FPGA logic cell internal structure including pair of look-up tables 14 1997
6,014,509 Field programmable gate array having access to orthogonal and diagonal adjacent neighboring cells 130 1997
6,167,559 FPGA structure having main, column and sector clock lines 58 1998
6,292,021 FPGA structure having main, column and sector reset lines 22 2000
 
ALTERA CORPORATION (9)
4,899,067 Programmable logic devices with spare circuits for use in replacing defective circuits 236 1988
6,034,536 Redundancy circuitry for logic circuits 28 1997
6,107,820 Redundancy circuitry for programmable logic devices with interleaved input circuits 74 1998
6,201,404 Programmable logic device with redundant circuitry 43 1999
6,091,258 Redundancy circuitry for logic circuits 19 1999
6,222,382 Redundancy circuitry for programmable logic devices with interleaved input circuits 6 2000
6,166,559 Redundancy circuitry for logic circuits 42 2000
6,344,755 Programmable logic device with redundant circuitry 44 2000
6,337,578 Redundancy circuitry for programmable logic devices with interleaved input circuits 9 2001
 
MASSACHUSETTS INSTITUTE OF TECHNOLOGY (8)
4,937,475 Laser programmable integrated circuit 64 1988
5,742,180 Dynamically programmable gate array with multiple contexts 280 1995
6,052,773 DPGA-coupled microprocessors 185 1995
8,742,794 Analog logic automata 0 2009
8,035,414 Asynchronous logic automata 0 2009
8,013,629 Reconfigurable logic automata 0 2009
8,766,665 Reconfigurable logic automata 0 2011
8,692,575 Asynchronous logic automata 0 2011
 
QUICKTURN DESIGN SYSTEMS, INC. (7)
5,036,473 Method of using electronically reconfigurable logic circuits 277 1989
5,329,470 Reconfigurable hardware emulation system 137 1993
5,812,414 Method for performing simulation using a hardware logic emulation system 44 1996
5,796,623 Apparatus and method for performing computations with electrically reconfigurable logic devices 33 1996
5,734,581 Method for implementing tri-state nets in a logic emulation system 19 1996
5,963,735 Hardware logic emulation system 31 1997
6,377,911 Apparatus for emulation of electronic hardware system 21 1999
 
META SYSTEMS (5)
6,594,810 Reconfigurable integrated circuit with a scalable architecture 29 2001
7,478,261 Reconfigurable circuit with redundant reconfigurable cluster(s) 1 2005
7,275,196 Runtime reconfiguration of reconfigurable circuits 1 2005
7,529,998 Runtime reconfiguration of reconfigurable circuits 2 2007
8,010,826 Reconfigurable circuit with redundant reconfigurable cluster(s) 0 2009
 
NATIONAL SEMICONDUCTOR CORPORATION (4)
5,317,209 Dynamic three-state bussing capability in a configurable logic array 38 1993
5,298,805 Versatile and efficient cell-to-local bus interface in a configurable logic array 71 1993
5,296,759 Diagonal wiring between abutting logic cells in a configurable logic array 118 1993
5,814,847 General purpose assembly programmable multi-chip package substrate 92 1996
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (3)
4,798,976 Logic redundancy circuit scheme 17 1987
5,732,233 High speed pipeline method and apparatus 23 1995
5,646,544 System and method for dynamically reconfiguring a programmable gate array 282 1995
 
TRW INC. (3)
4,928,022 Redundancy interconnection circuitry 14 1987
5,451,801 Adaptive configurable gate array 6 1992
5,459,340 Adaptive configurable gate array 37 1994
 
MENTOR GRAPHICS (HOLDING) LTD. (2)
5,777,489 Field programmable gate array with integrated debugging facilities 65 1995
6,717,433 Reconfigurable integrated circuit with integrated debugging facilities and scalable programmable interconnect 8 2002
 
RICOH COMPANY, LTD. (2)
7,120,699 Document controlled workflow systems and methods 7 2001
7,356,611 Method and apparatus for permissions based active document workflow 3 2002
 
SYNOPSYS, INC. (2)
5,625,580 Hardware modeling system and method of use 45 1994
6,148,275 System for and method of connecting a hardware modeling element to a hardware modeling system 1 1997
 
Versity Design, Inc. (2)
6,009,256 Simulation/emulation system and method 112 1997
6,321,366 Timing-insensitive glitch-free logic system and method 121 1998
 
Anamartic Limited (1)
4,847,615 Control system for chained circuit modules 20 1987
 
BTR, INC. (1)
6,034,547 Method and apparatus for universal program controlled bus 32 1996
 
COMMISSARIAT A L'ENERGIE ATOMIQUE (1)
7,499,843 Reconfigurable control system based on hardware implementation of Petri graphs 0 2003
 
Crosspoint Solutions, Inc. (1)
5,527,745 Method of fabricating antifuses in an integrated circuit device and resulting structure 16 1993
 
ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (1)
5,508,636 Electronic system organised as an array of cells 26 1994
 
FREESCALE SEMICONDUCTOR, INC. (1)
4,935,734 Semi-conductor integrated circuits/systems 171 1986
 
FUJI XEROX CO., LTD. (1)
6,336,209 Information processing system that processes portions of an application program using programmable logic circuits 13 1999
 
INTEL CORPORATION (1)
6,654,944 Two-dimensional C-element array 5 2002
 
Montedison S.p.A. (1)
4,943,744 Differentiating logical circuit for asynchronous systems 1 1989
 
MOSAID TECHNOLOGIES INCORPORATED (1)
5,210,699 Process for extracting logic from transistor and resistor data representations of circuits 29 1991
 
The MITRE Corporation (1)
5,056,053 Algebraic transform machine 0 1990