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

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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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ZORAN CORPORATIONSUNNYVALE, CA23

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Graham, III Hatch 42078 Via San Luis Rey, Fremont, CA 94539 2 174
Seltz, Daniel Ben Lomond, CA 5 189

Cited Art

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KABUSHIKI KAISHA TOSHIBA (1)
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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 396 1984
 
ZILOG, INC. (1)
4,670,749 Integrated circuit programmable cross-point connection technique 71 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 Cites

Patent Info (Count) # Cites Year
 
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5,432,441 Testability architecture and techniques for programmable interconnect architecture 18 1993
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5,610,534 Logic module for a programmable logic device 3 1995
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5,606,267 Programmable logic module and architecture for field programmable gate array device 32 1995
5,600,265 Programmable interconnect architecture 97 1995
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6,160,420 Programmable interconnect architecture 35 1996
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PROLINX LABS CORPORATION (14)
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CADENCE DESIGN SYSTEMS, INC. (13)
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ALTERA CORPORATION (10)
5,260,610 Programmable logic element interconnections for programmable logic array integrated circuits 389 1991
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5,376,844 Programmable logic device with multiplexer-based programmable interconnections 46 1993
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CROSSPOINT SOLUTIONS, INC. (10)
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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 45 1989
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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 32 1993
5,400,262 Universal interconnect matrix array 54 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
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LATTICE SEMICONDUCTOR CORPORATION (8)
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5,381,058 FPGA having PFU with programmable output driver inputs 43 1993
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QUICKTURN DESIGN SYSTEMS, INC. (8)
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ATMEL CORPORATION (5)
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VERISITY DESIGN, INC. (4)
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KAWASAKI MICROELECTRONICS, INC. (3)
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OTRSOTECH, LLC (3)
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LSI LOGIC CORPORATION (2)
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