US Patent No: 4,786,904

Number of patents in Portfolio can not be more than 2000

Electronically programmable gate array having programmable interconnect lines

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Abstract

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An electronically programmable gate array comprises a plurality of rows of logic cells with each cell having a plurality of inputs, at least one output, and a plurality of electronically programmable voltage levels for configuring the cell. A plurality of sets of interconnect lines are formed in the array with one set of interconnect lines provided between adjacent rows of logic cells with electronically programmable contacts connecting inputs and an output of each cell in a row of cells with two adjacent sets of interconnect lines. Each row of logic cells preferably includes alternating three-input cells and two-input cells. Each electronically programmable voltage level comprises two voltage alterable resistors serially connected between first and second voltage potentials. Each electronically programmable interconnect comprises a voltage alterable resistor.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ZORAN CORPORATIONSUNNYVALE, CA24

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Graham, III Hatch 42078 Via San Luis Rey, Fremont, CA 94539 2 175
Seltz, Daniel Ben Lomond, CA 5 197

Cited Art Landscape

Patent Info (Count) # Cites Year
 
RCA Corporation (2)
4,612,459 Programmable buffer selectively settable to operate in different modes 25 1984
4,596,938 Electrically erasable programmable electronic circuits using programmable-threshold-voltage FET pairs 27 1984
 
KABUSHIKI KAISHA TOSHIBA (1)
4,631,686 Semiconductor integrated circuit device 55 1984
 
SIEMENS NIXDORF INFORMATIONSSYSTEME AG (1)
4,689,654 Logic array chip 34 1986
 
XILINX, INC. (1)
4,642,487 Special interconnect for configurable logic array 400 1984
 
ZILOG, INC. (1)
4,670,749 Integrated circuit programmable cross-point connection technique 72 1984
 
ZORAN CORPORATION (1)
4,590,589 Electrically programmable read only memory 81 1982
 
Other [Check patent profile for assignment information] (1)
4,531,066 Variable bias logic circuit 2 1978

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Actel Corporation (31)
4,873,459 Programmable interconnect architecture 352 1988
5,015,885 Reconfigurable programmable interconnect architecture 61 1989
5,073,729 Segmented routing architecture 123 1990
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5,365,165 Testability architecture and techniques for programmable interconnect architecture 25 1992
5,341,043 Series linear antifuse array 15 1992
5,341,092 Testability architecture and techniques for programmable interconnect architecture 30 1992
5,440,245 Logic module with configurable combinational and sequential blocks 93 1993
5,432,441 Testability architecture and techniques for programmable interconnect architecture 18 1993
5,485,031 Antifuse structure suitable for VLSI application 86 1993
5,451,887 Programmable logic module and architecture for field programmable gate array device 92 1994
5,614,756 Metal-to-metal antifuse with conductive 38 1994
5,477,165 Programmable logic module and architecture for field programmable gate array device 30 1994
5,610,534 Logic module for a programmable logic device 6 1995
5,510,730 Reconfigurable programmable interconnect architecture 108 1995
5,570,041 Programmable logic module and architecture for field programmable gate array device 41 1995
6,111,302 Antifuse structure suitable for VLSI application 26 1995
5,606,267 Programmable logic module and architecture for field programmable gate array device 32 1995
5,600,265 Programmable interconnect architecture 107 1995
5,744,980 Flexible, high-performance static RAM architecture for field-programmable gate arrays 128 1996
6,160,420 Programmable interconnect architecture 37 1996
5,780,323 Fabrication method for metal-to-metal antifuses incorporating a tungsten via plug 39 1996
5,781,033 Logic module with configurable combinational and sequential blocks 20 1996
5,698,992 Programmable logic module and architecture for field programmable gate array device 25 1996
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7,382,156 Method and apparatus for universal program controlled bus architecture 32 2005
7,409,664 Architecture and interconnect scheme for programmable logic circuits 2 2005
7,646,218 Architecture and interconnect scheme for programmable logic circuits 1 2008
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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
 
QUICKLOGIC CORPORATION (25)
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5,294,846 Method and apparatus for programming anti-fuse devices 32 1992
5,280,202 Programmable application specific integrated circuit and logic cell therefor 100 1993
5,502,315 Electrically programmable interconnect structure having a PECVD amorphous silicon element 50 1993
5,416,367 Programmable application specific integrated circuit and logic cell therefor 33 1994
5,396,127 Programmable application specific integrated circuit and logic cell therefor 23 1994
5,430,390 Programmable application specific integrated circuit and logic cell therefor 19 1994
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5,469,109 Method and apparatus for programming anti-fuse devices 15 1995
5,587,669 Programmable application specific integrated circuit and logic cell therefor 13 1995
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5,654,649 Programmable application specific integrated circuit employing antifuses and methods therefor 22 1995
5,600,262 Integrated circuit facilitating simultaneous programming of multiple antifuses 70 1995
5,780,919 Electrically programmable interconnect structure having a PECVD amorphous silicon element 22 1996
5,682,106 Logic module for field programmable gate array 17 1996
5,726,586 Programmable application specific integrated circuit and logic cell therefor 5 1996
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6,150,199 Method for fabrication of programmable interconnect structure 7 1999
 
CADENCE DESIGN SYSTEMS, INC. (17)
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5,612,891 Hardware logic emulation system with memory capability 61 1995
5,644,515 Hardware logic emulation system capable of probing internal nodes in a circuit design undergoing emulation 39 1995
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6,377,912 Emulation system with time-multiplexed interconnect 67 1999
6,842,729 Apparatus for emulation of electronic systems 8 2002
 
Prolinx Labs Corporation (14)
5,813,881 Programmable cable and cable adapter using fuses and antifuses 16 1994
5,808,351 Programmable/reprogramable structure using fuses and antifuses 46 1994
5,726,482 Device-under-test card for a burn-in board 13 1994
5,572,409 Apparatus including a programmable socket adapter for coupling an electronic component to a component socket on a printed circuit board 43 1994
5,537,108 Method and structure for programming fuses 44 1994
5,962,815 Antifuse interconnect between two conducting layers of a printed circuit board 35 1995
5,834,824 Use of conductive particles in a nonconductive body as an integrated circuit antifuse 46 1995
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5,767,575 Ball grid array structure and method for packaging an integrated circuit chip 58 1995
5,872,338 Multilayer board having insulating isolation rings 64 1996
5,917,229 Programmable/reprogrammable printed circuit board using fuse and/or antifuse as interconnect 28 1996
5,906,043 Programmable/reprogrammable structure using fuses and antifuses 4 1997
5,987,744 Method for supporting one or more electronic components 21 1997
6,034,427 Ball grid array structure and method for packaging an integrated circuit chip 156 1998
 
ALTERA CORPORATION (10)
5,260,610 Programmable logic element interconnections for programmable logic array integrated circuits 398 1991
5,260,611 Programmable logic array having local and long distance conductors 419 1992
5,376,844 Programmable logic device with multiplexer-based programmable interconnections 47 1993
5,371,422 Programmable logic device having multiplexers and demultiplexers randomly connected to global conductors for interconnections between logic elements 230 1993
5,436,575 Programmable logic array integrated circuits 66 1993
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5,883,850 Programmable logic array integrated circuits 52 1996
6,759,870 Programmable logic array integrated circuits 2 2003
 
Crosspoint Solutions, Inc. (10)
5,221,865 Programmable input/output buffer circuit with test capability 102 1991
5,313,119 Field programmable gate array 83 1991
5,347,519 Preprogramming testing in a field programmable gate array 82 1991
5,384,481 Antifuse circuit structure for use in a field programmable gate array and method of manufacture thereof 21 1993
5,527,745 Method of fabricating antifuses in an integrated circuit device and resulting structure 16 1993
5,394,103 Field programmable gate array 5 1994
5,623,501 Preprogramming testing in a field programmable gate array 21 1994
5,493,147 Antifuse circuit structure for use in a field programmable gate array and method of manufacture thereof 18 1994
5,465,055 RAM-logic tile for field programmable gate arrays 9 1994
5,629,636 Ram-logic tile for field programmable gate arrays 4 1995
 
MENTOR GRAPHICS CORPORATION (9)
5,377,124 Field programmable printed circuit board 46 1989
5,371,390 Interconnect substrate with circuits for field-programmability and testing of multichip modules and hybrid circuits 78 1992
5,321,322 Programmable interconnect architecture without active devices 40 1993
5,544,069 Structure having different levels of programmable integrated circuits interconnected through bus lines for interconnecting electronic components 33 1993
5,400,262 Universal interconnect matrix array 56 1993
5,504,354 Interconnect substrate with circuits for field-programmability and testing of multichip modules and hybrid circuits 33 1994
5,654,564 Interconnect structure with programmable IC for interconnecting electronic components, including circuitry for controlling programmable IC 48 1996
5,973,340 Interconnect substrate with circuits for field-programmability and testing of multichip modules and hybrid circuits 46 1997
6,160,276 Double-sided programmable interconnect structure 12 1999
 
LATTICE SEMICONDUCTOR CORPORATION (8)
5,260,881 Programmable gate array with improved configurable logic block 73 1989
5,128,871 Apparatus and method for allocation of resoures in programmable logic devices 202 1990
5,185,706 Programmable gate array with logic cells having configurable output enable 70 1990
5,255,203 Interconnect structure for programmable logic device 81 1990
5,359,536 Programmable gate array with improved interconnect structure, input/output structure and configurable logic block 40 1993
5,381,058 FPGA having PFU with programmable output driver inputs 45 1993
5,644,496 Programmable logic device with internal time-constant multiplexing of signals from external interconnect buses 53 1993
5,740,069 Logic device (PLD) having direct connections between configurable logic blocks (CLBs) and configurable input/output blocks (IOBs) 37 1996
 
QUICKTURN DESIGN SYSTEMS, INC. (8)
5,109,353 Apparatus for emulation of electronic hardware system 181 1988
5,036,473 Method of using electronically reconfigurable logic circuits 258 1989
5,329,470 Reconfigurable hardware emulation system 136 1993
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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 20 1999
 
ATMEL CORPORATION (5)
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 336 1990
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KAWASAKI MICROELECTRONICS, INC. (3)
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Logic Devices, Inc. (3)
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MENTOR GRAPHICS (HOLDING) LTD. (3)
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OTRSOTECH, LLC (3)
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XILINX, INC. (3)
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IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC. (2)
8,661,394 Depth-optimal mapping of logic chains in reconfigurable fabrics 0 2008
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LSI LOGIC CORPORATION (2)
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Versity Design, Inc. (2)
6,009,256 Simulation/emulation system and method 109 1997
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FEI COMPANY (1)
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FREESCALE SEMICONDUCTOR, INC. (1)
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HITACHI VLSI ENGINEERING CORP. (1)
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LIGHTSPEED SEMICONDUCTOR (1)
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MITRE CORPORATION, THE (1)
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OVONYX, INC. (1)
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UNIVERSITY OF WASHINGTON (1)
5,208,491 Field programmable gate array 376 1992
 
VIRTUAL COMPUTER CORPORATION (1)
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