Inventor · disambiguated record
Richard G. Cliff
Also filed as: CLIFF RICHARD · CLIFF RICHARD G
170 granted patents·6 pending applications·10,151 citations·filing 1989–2018
99Inventor score
Top patents by PatentIndex Score
176 records- 0199US6215326B1Programmable logic device architecture with super-regions having logic regions and a memory regionALTERA CORP·Filed 1999·Granted Apr 10, 2001·331 cites·20 claims
- 0299US5815726ACoarse-grained look-up table architectureALTERA CORP·Filed 1995·Granted Sep 29, 1998·287 cites·32 claims
- 0399US5744991ASystem for distributing clocks using a delay lock loop in a programmable logic circuitALTERA CORP·Filed 1995·Granted Apr 28, 1998·216 cites·6 claims
- 0499US5689195AProgrammable logic array integrated circuit devicesALTERA CORP·Filed 1995·Granted Nov 18, 1997·454 cites·19 claims
- 0599US5550782AProgrammable logic array integrated circuitsALTERA CORP·Filed 1994·Granted Aug 27, 1996·369 cites·21 claims
- 0699US5537057AProgrammable logic array device with grouped logic regions and three types of conductorsALTERA CORP·Filed 1995·Granted Jul 16, 1996·326 cites·43 claims
- 0799US5485103AProgrammable logic array with local and global conductorsALTERA CORP·Filed 1994·Granted Jan 16, 1996·285 cites·17 claims
- 0899US5260611AProgrammable logic array having local and long distance conductorsALTERA CORP·Filed 1992·Granted Nov 9, 1993·496 cites·11 claims
- 0999US5260610AProgrammable logic element interconnections for programmable logic array integrated circuitsALTERA CORP·Filed 1991·Granted Nov 9, 1993·486 cites·26 claims
- 1099US5258668AProgrammable logic array integrated circuits with cascade connections between logic modulesALTERA CORP·Filed 1992·Granted Nov 2, 1993·273 cites·8 claims
- 1198US6292016B1Programmable logic with on-chip DLL or PLL to distribute clockALTERA CORP·Filed 2000·Granted Sep 18, 2001·93 cites·38 claims
- 1298US6271679B1I/O cell configuration for multiple I/O standardsALTERA CORP·Filed 2000·Granted Aug 7, 2001·103 cites·15 claims
- 1398US6134173AProgrammable logic array integrated circuitsALTERA CORP·Filed 1998·Granted Oct 17, 2000·143 cites·108 claims
- 1498US5963069ASystem for distributing clocks using a delay lock loop in a programmable logic circuitALTERA CORP·Filed 1997·Granted Oct 5, 1999·142 cites·23 claims
- 1598US5828229AProgrammable logic array integrated circuitsALTERA CORP·Filed 1997·Granted Oct 27, 1998·185 cites·3 claims
- 1698US5274581ALook up table implementation of fast carry for adders and countersALTERA CORP·Filed 1992·Granted Dec 28, 1993·160 cites·23 claims
- 1797US6130552AProgrammable logic integrated circuit with on-chip DLL or PLL for clock distributionALTERA CORP·Filed 1998·Granted Oct 10, 2000·105 cites·51 claims
- 1897US5909126AProgrammable logic array integrated circuit devices with interleaved logic array blocksALTERA CORP·Filed 1996·Granted Jun 1, 1999·133 cites·43 claims
- 1997US5541530AProgrammable logic array integrated circuits with blocks of logic regions grouped into super-blocksALTERA CORP·Filed 1995·Granted Jul 30, 1996·181 cites·14 claims
- 2097US5498975AImplementation of redundancy on a programmable logic deviceALTERA CORP·Filed 1993·Granted Mar 12, 1996·122 cites·15 claims
- 2196US6252419B1LVDS interface incorporating phase-locked loop circuitry for use in programmable logic deviceALTERA CORP·Filed 1999·Granted Jun 26, 2001·113 cites·44 claims
- 2296US6236231B1Programmable logic integrated circuit devices with low voltage differential signaling capabilitiesALTERA CORP·Filed 1999·Granted May 22, 2001·111 cites·16 claims
- 2396US6166559ARedundancy circuitry for logic circuitsALTERA CORP·Filed 2000·Granted Dec 26, 2000·65 cites·29 claims
- 2496US6107824ACircuitry and methods for internal interconnection of programmable logic devicesALTERA CORP·Filed 1998·Granted Aug 22, 2000·103 cites·158 claims
- 2596US6069487AProgrammable logic device circuitry for improving multiplier speed and/or efficiencyALTERA CORP·Filed 1998·Granted May 30, 2000·118 cites·26 claims
- 2696US5999015ALogic region resources for programmable logic devicesALTERA CORP·Filed 1997·Granted Dec 7, 1999·128 cites·48 claims
- 2796US5926036AProgrammable logic array circuits comprising look up table implementation of fast carry adders and countersALTERA CORP·Filed 1998·Granted Jul 20, 1999·98 cites·15 claims
- 2896US5894228ATristate structures for programmable logic devicesALTERA CORP·Filed 1996·Granted Apr 13, 1999·128 cites·27 claims
- 2996US5717901AVariable depth and width memory deviceALTERA CORP·Filed 1995·Granted Feb 10, 1998·89 cites·15 claims
- 3096US5272368AComplementary low power non-volatile reconfigurable EEcellALTERA CORP·Filed 1991·Granted Dec 21, 1993·141 cites·15 claims
- 3195US8461869B1Apparatus for configuring performance of field programmable gate arrays and associated methodsRAHIM IRFAN·Filed 2011·Granted Jun 11, 2013·24 cites·25 claims
- 3295US8228102B1Phase-locked loop architecture and clock distribution systemPHAM TIEN DUC·Filed 2010·Granted Jul 24, 2012·16 cites·20 claims
- 3395US6052327ADual-port programmable logic device variable depth and width memory arrayALTERA CORP·Filed 1998·Granted Apr 18, 2000·110 cites·25 claims
- 3495US5982195AProgrammable logic device architecturesALTERA CORP·Filed 1997·Granted Nov 9, 1999·114 cites·21 claims
- 3595US5850152AProgrammable logic array integrated circuit devicesALTERA CORP·Filed 1997·Granted Dec 15, 1998·69 cites·10 claims
- 3695US5848005AProgrammable logic array integrated circuitsALTERA CORP·Filed 1997·Granted Dec 8, 1998·66 cites·11 claims
- 3795US5812479AProgrammable logic array integrated circuitsALTERA CORP·Filed 1997·Granted Sep 22, 1998·70 cites·13 claims
- 3895US5668771AProgrammable logic array integrated circuitsALTERA CORP·Filed 1996·Granted Sep 16, 1997·71 cites·15 claims
- 3995US5598109AProgrammable logic array device with grouped logic regions and three types of conductorsALTERA CORP·Filed 1996·Granted Jan 28, 1997·116 cites·25 claims
- 4094US7109748B1Integrated circuits with reduced standby power consumptionALTERA CORP·Filed 2005·Granted Sep 19, 2006·26 cites·20 claims
- 4194US6940307B1Integrated circuits with reduced standby power consumptionALTERA CORP·Filed 2003·Granted Sep 6, 2005·50 cites·21 claims
- 4294US5764080AInput/output interface circuitry for programmable logic array integrated circuit devicesALTERA CORP·Filed 1995·Granted Jun 9, 1998·91 cites·12 claims
- 4393US6483886B1Phase-locked loop circuitry for programmable logic devicesALTERA CORP·Filed 1999·Granted Nov 19, 2002·78 cites·39 claims
- 4493US6417694B1Programmable logic device with hierarchical interconnection resourcesALTERA CORP·Filed 2001·Granted Jul 9, 2002·40 cites·9 claims
- 4593US5977793AProgrammable logic device with hierarchical interconnection resourcesALTERA CORP·Filed 1997·Granted Nov 2, 1999·87 cites·43 claims
- 4693US5376844AProgrammable logic device with multiplexer-based programmable interconnectionsALTERA CORP·Filed 1993·Granted Dec 27, 1994·61 cites·23 claims
- 4793US5237219AMethods and apparatus for programming cellular programmable logic integrated circuitsALTERA CORP·Filed 1992·Granted Aug 17, 1993·100 cites·11 claims
- 4892US6469553B1Phase-locked loop circuitry for programmable logic devicesALTERA CORP·Filed 2001·Granted Oct 22, 2002·69 cites·29 claims
- 4992US6373278B1LVDS interface incorporating phase-locked loop circuitry for use in programmable logic deviceALTERA CORP·Filed 2001·Granted Apr 16, 2002·47 cites·35 claims
- 5092US6359469B1Logic element for a programmable logic integrated circuitALTERA CORP·Filed 2001·Granted Mar 19, 2002·35 cites·25 claims
Showing the top 50 of 176 patent records by PatentIndex Score.
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