Programmable logic array devices with interconnect lines of various lengths

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5543732
SERIAL NO

08442832

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A programmable logic array device has a plurality of logic regions and conductors for conveying signals between the logic regions. Conductors of several different lengths are provided so that most connections between logic regions can be made using conductors which are close to the length required and not wastefully much longer than that length.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ALTERA CORPORATIONSAN JOSE, CA4205

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ahanin, Bahram Cupertino, CA 32 2712
Cliff, Richard G Milpitas, CA 155 7411
Leong, William San Francisco, CA 40 1442
McClintock, Cameron Mountain View, CA 57 2189

Cited Art Landscape

Patent Info (Count) # Cites Year
 
CYPRESS SEMICONDUCTOR CORPORATION (1)
* 5467029 OR array architecture for a programmable logic device 43 1993
 
LATTICE SEMICONDUCTOR CORPORATION (1)
* 5255203 Interconnect structure for programmable logic device 81 1990
 
ACTEL CORPORATION (2)
* 4758745 User programmable integrated circuit interconnect architecture and test method 458 1986
* 5073729 Segmented routing architecture 126 1990
 
RPX CORPORATION (1)
* 2004/0133,803 Methods and apparatus for protecting information 10 2003
 
UNIVERSITY OF WASHINGTON (1)
* 5208491 Field programmable gate array 415 1992
 
ALTERA CORPORATION (13)
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* 4677318 Programmable logic storage element for programmable logic devices 243 1985
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* 4774421 Programmable logic array device using EPROM technology 178 1986
* 4871930 Programmable logic device with array blocks connected via programmable interconnect 365 1988
* 4899067 Programmable logic devices with spare circuits for use in replacing defective circuits 242 1988
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* 5121006 Registered logic macrocell with product term allocation and adjacent product term stealing 247 1991
* 5260610 Programmable logic element interconnections for programmable logic array integrated circuits 411 1991
* 5220214 Registered logic macrocell with product term allocation and adjacent product term stealing 146 1992
* 5260611 Programmable logic array having local and long distance conductors 437 1992
* 5350954 Macrocell with flexible product term allocation 208 1993
* 5371422 Programmable logic device having multiplexers and demultiplexers randomly connected to global conductors for interconnections between logic elements 262 1993
 
XILINX, INC. (2)
* 4642487 Special interconnect for configurable logic array 440 1984
* RE34363 Configurable electrical circuit having configurable logic elements and configurable interconnects 610 1991
 
ATMEL CORPORATION (1)
* 5218240 Programmable logic cell and array with bus repeaters 99 1992
 
ALTERA SEMICONDUCTOR CORPORATION 1723 HAMILTON AVE., SAN JOSE, CA 95125 A CORP. OF (1)
* 4617479 Programmable logic array device using EPROM technology 332 1984
* Cited By Examiner

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (4)
6614261 Interconnection and input/output resources for programable logic integrated circuit devices 10 2002
* 2003/0210,073 Interconnection and input/output resources for programmable logic integrated circuit devices 0 2003
* 2008/0074,143 Interconnection and input/output resources for programmable logic integrated circuit devices 2 2007
* 2009/0289,660 INTERCONNECTION AND INPUT/OUTPUT RESOURCES FOR PROGRAMMABLE LOGIC INTEGRATED CIRCUIT DEVICES 12 2009
 
LATTICE SEMICONDUCTOR CORPORATION (1)
* 6163168 Efficient interconnect network for use in FPGA device having variable grain architecture 132 1998
 
CALLAHAN CELLULAR L.L.C. (4)
* 7055125 Depopulated programmable logic array 5 2001
* 2002/0059,555 Depopulated programmable logic array 2 2001
* 6804812 Depopulated programmable logic array 2 2003
* 2003/0212,979 Depopulated programmable logic array 0 2003
 
ACTEL CORPORATION (1)
6160420 Programmable interconnect architecture 38 1996
 
WOLFGANG LERCHE (1)
* 6657457 Data transfer on reconfigurable chip 67 2000
 
ALTERA CORPORATION (35)
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* 5872463 Routing in programmable logic devices using shared distributed programmable logic connectors 20 1996
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* 5900743 Programmable logic array devices with interconnect lines of various lengths 16 1997
RE38651 Variable depth and width memory device 4 1998
6288970 Programmable logic device memory array circuit having combinable single-port memory arrays 18 1998
* 6052327 Dual-port programmable logic device variable depth and width memory array 89 1998
* 6127846 Programmable logic array devices with interconnect lines of various lengths 2 1998
6259272 Programmable logic array integrated circuit architectures 5 1999
6191998 Programmable logic device memory array circuit having combinable single-port memory arrays 78 1999
6396304 Programmable logic array integrated circuits with blocks of logic regions grouped into super-blocks 2 1999
6480027 Driver circuitry for programmable logic devices 46 2000
6407576 Interconnection and input/output resources for programmable logic integrated circuit devices 144 2000
6366120 Interconnection resources for programmable logic integrated circuit devices 8 2000
* 6278291 Programmable logic array devices with interconnect lines of various lengths 23 2000
6392954 Dual port programmable logic device variable depth and width memory array 2 2000
6366121 Programmable logic array integrated circuit architectures 0 2001
6525564 Interconnection resources for programmable logic integrated circuit devices 2 2001
6690195 Driver circuitry for programmable logic devices 12 2002
6480028 Programmable logic device architectures with super-regions having logic regions and memory region 4 2002
6879183 Programmable logic device architectures with super-regions having logic regions and a memory region 1 2002
6727727 Interconnection resources for programmable logic integrated circuit devices 9 2002
7111110 Versatile RAM for programmable logic device 13 2002
6894533 Interconnection and input/output resources for programmable logic integrated circuit devices 4 2003
6897680 Interconnection resources for programmable logic integrated circuit devices 5 2004
6989689 Interconnection and input/output resources for programmable logic integrated circuit devices 10 2004
7123052 Interconnection resources for programmable logic integrated circuit devices 5 2005
* 2005/0218,930 Interconnection resources for programmable logic integrated circuit devices 1 2005
7317332 Interconnection and input/output resources for programmable logic integrated circuit devices 9 2005
* 2007/0030,029 Interconnection and input/output resources for programmable logic integrated circuit devices 2 2005
7480763 Versatile RAM for a programmable logic device 3 2006
7492188 Interconnection and input/output resources for programmable logic integrated circuit devices 7 2007
7839167 Interconnection and input/output resources for programmable logic integrated circuit devices 3 2009
 
XILINX, INC. (18)
* 5760604 Interconnect architecture for field programmable gate array 31 1996
* 5801546 Interconnect architecture for field programmable gate array using variable length conductors 103 1996
* 5914616 FPGA repeatable interconnect structure with hierarchical interconnect lines 371 1997
* 5889411 FPGA having logic element carry chains capable of generating wide XOR functions 193 1997
* 5942913 FPGA repeatable interconnect structure with bidirectional and unidirectional interconnect lines 69 1997
* 5847579 Programmable logic array with improved interconnect structure 85 1997
* 5963050 Configurable logic element with fast feedback paths 116 1997
* 5920202 Configurable logic element with ability to evaluate five and six input functions 84 1997
* 5907248 FPGA interconnect structure with high-speed high fanout capability 49 1998
* 6051992 Configurable logic element with ability to evaluate five and six input functions 34 1999
* 6107827 FPGA CLE with two independent carry chains 47 1999
6204689 Input/output interconnect circuit for FPGAs 76 1999
6201410 Wide logic gate implemented in an FPGA configurable logic element 15 1999
* 6124731 Configurable logic element with ability to evaluate wide logic functions 30 2000
6204690 FPGA architecture with offset interconnect lines 37 2000
6292022 Interconnect structure for a programmable logic device 25 2001
RE40423 Multiport RAM with programmable data port configuration 4 2001
6448808 Interconnect structure for a programmable logic device 133 2001
 
Altera Canada Co. (3)
* 6590419 Heterogeneous interconnection architecture for programmable logic devices 16 1999
6828824 Heterogeneous interconnection architecture for programmable logic devices 56 2003
* 2004/0017,222 Heterogeneous interconnection architecture for programmable logic devices 18 2003
* Cited By Examiner