Assignee
QUICKTURN DESIGN SYSTEMS INC
US·78 granted patents·1 pending application·5,156 citations·filing 1992–2009
Top patents by PatentIndex Score
79 records- 0198US6732068B2Memory circuit for use in hardware emulation systemQUICKTURN DESIGN SYSTEMS INC·Filed 2001·Granted May 4, 2004·273 cites·4 claims
- 0298US5960191AEmulation system with time-multiplexed interconnectQUICKTURN DESIGN SYSTEMS INC·Filed 1997·Granted Sep 28, 1999·169 cites·25 claims
- 0397US6377912B1Emulation system with time-multiplexed interconnectQUICKTURN DESIGN SYSTEMS INC·Filed 1999·Granted Apr 23, 2002·153 cites·45 claims
- 0497US5452231AHierarchically connected reconfigurable logic assemblyQUICKTURN DESIGN SYSTEMS INC·Filed 1994·Granted Sep 19, 1995·224 cites·13 claims
- 0597US5448496APartial crossbar interconnect architecture for reconfigurably connecting multiple reprogrammable logic devices in a logic emulation systemQUICKTURN DESIGN SYSTEMS INC·Filed 1994·Granted Sep 5, 1995·207 cites·23 claims
- 0696US6694464B1Method and apparatus for dynamically testing electrical interconnectQUICKTURN DESIGN SYSTEMS INC·Filed 2000·Granted Feb 17, 2004·171 cites·24 claims
- 0796US5887158ASwitching midplane and interconnecting system for interconnecting large numbers of signalsQUICKTURN DESIGN SYSTEMS INC·Filed 1997·Granted Mar 23, 1999·169 cites·8 claims
- 0894US5452239AMethod of removing gated clocks from the clock nets of a netlist for timing sensitive implementation of the netlist in a hardware emulation systemQUICKTURN DESIGN SYSTEMS INC·Filed 1993·Granted Sep 19, 1995·436 cites·2 claims
- 0994US5425036AMethod and apparatus for debugging reconfigurable emulation systemsQUICKTURN DESIGN SYSTEMS INC·Filed 1992·Granted Jun 13, 1995·389 cites·11 claims
- 1093US6446249B1Emulation circuit with a hold time algorithm, logic and analyzer and shadow memoryQUICKTURN DESIGN SYSTEMS INC·Filed 2000·Granted Sep 3, 2002·147 cites·46 claims
- 1191US6539535B2Programmable logic device having integrated probing structuresQUICKTURN DESIGN SYSTEMS INC·Filed 2001·Granted Mar 25, 2003·80 cites·15 claims
- 1291US6002861AMethod for performing simulation using a hardware emulation systemQUICKTURN DESIGN SYSTEMS INC·Filed 1998·Granted Dec 14, 1999·109 cites·3 claims
- 1391US5612891AHardware logic emulation system with memory capabilityQUICKTURN DESIGN SYSTEMS INC·Filed 1995·Granted Mar 18, 1997·120 cites·10 claims
- 1491US5475830AStructure and method for providing a reconfigurable emulation circuit without hold time violationsQUICKTURN DESIGN SYSTEMS INC·Filed 1992·Granted Dec 12, 1995·175 cites·21 claims
- 1589US5943490ADistributed logic analyzer for use in a hardware logic emulation systemQUICKTURN DESIGN SYSTEMS INC·Filed 1997·Granted Aug 24, 1999·136 cites·15 claims
- 1689US5841967AMethod and apparatus for design verification using emulation and simulationQUICKTURN DESIGN SYSTEMS INC·Filed 1996·Granted Nov 24, 1998·134 cites·70 claims
- 1789US5661662AStructures and methods for adding stimulus and response functions to a circuit design undergoing emulationQUICKTURN DESIGN SYSTEMS INC·Filed 1995·Granted Aug 26, 1997·102 cites·1 claims
- 1888US7721036B2System and method for providing flexible signal routing and timingQUICKTURN DESIGN SYSTEMS INC·Filed 2005·Granted May 18, 2010·24 cites·35 claims
- 1987US7739097B2Emulation system with time-multiplexed interconnectQUICKTURN DESIGN SYSTEMS INC·Filed 2002·Granted Jun 15, 2010·26 cites·17 claims
- 2087US6697957B1Emulation circuit with a hold time algorithm, logic analyzer and shadow memoryQUICKTURN DESIGN SYSTEMS INC·Filed 2000·Granted Feb 24, 2004·55 cites·47 claims
- 2186US5812414AMethod for performing simulation using a hardware logic emulation systemQUICKTURN DESIGN SYSTEMS INC·Filed 1996·Granted Sep 22, 1998·77 cites·8 claims
- 2285US6058492AMethod and apparatus for design verification using emulation and simulationQUICKTURN DESIGN SYSTEMS INC·Filed 1998·Granted May 2, 2000·102 cites·7 claims
- 2383US6842729B2Apparatus for emulation of electronic systemsQUICKTURN DESIGN SYSTEMS INC·Filed 2002·Granted Jan 11, 2005·26 cites·3 claims
- 2483US6618698B1Clustered processors in an emulation engineQUICKTURN DESIGN SYSTEMS INC·Filed 1999·Granted Sep 9, 2003·105 cites·13 claims
- 2583US5477475AMethod for emulating a circuit design using an electrically reconfigurable hardware emulation apparatusQUICKTURN DESIGN SYSTEMS INC·Filed 1994·Granted Dec 19, 1995·81 cites·9 claims
- 2682US5835751AStructure and method for providing reconfigurable emulation circuitQUICKTURN DESIGN SYSTEMS INC·Filed 1997·Granted Nov 10, 1998·78 cites·4 claims
- 2782US5796623AApparatus and method for performing computations with electrically reconfigurable logic devicesQUICKTURN DESIGN SYSTEMS INC·Filed 1996·Granted Aug 18, 1998·60 cites·2 claims
- 2879US7379861B2Dynamic programming of trigger conditions in hardware emulation systemsQUICKTURN DESIGN SYSTEMS INC·Filed 2005·Granted May 27, 2008·11 cites·25 claims
- 2979US7260794B2Logic multiprocessor for FPGA implementationQUICKTURN DESIGN SYSTEMS INC·Filed 2003·Granted Aug 21, 2007·27 cites·8 claims
- 3079US6289494B1Optimized emulation and prototyping architectureQUICKTURN DESIGN SYSTEMS INC·Filed 1997·Granted Sep 11, 2001·78 cites·10 claims
- 3179US5920712AEmulation system having multiple emulator clock cycles per emulated clock cycleQUICKTURN DESIGN SYSTEMS INC·Filed 1996·Granted Jul 6, 1999·110 cites·32 claims
- 3278US6832185B1Non-synchronous hardware emulatorQUICKTURN DESIGN SYSTEMS INC·Filed 2000·Granted Dec 14, 2004·28 cites·16 claims
- 3378US6625793B2Optimized emulation and prototyping architectureQUICKTURN DESIGN SYSTEMS INC·Filed 2001·Granted Sep 23, 2003·23 cites·1 claims
- 3478US5819065ASystem and method for emulating memoryQUICKTURN DESIGN SYSTEMS INC·Filed 1996·Granted Oct 6, 1998·95 cites·8 claims
- 3578US5657241ARouting methods for use in a logic emulation systemQUICKTURN DESIGN SYSTEMS INC·Filed 1995·Granted Aug 12, 1997·52 cites·1 claims
- 3677US5963735AHardware logic emulation systemQUICKTURN DESIGN SYSTEMS INC·Filed 1997·Granted Oct 5, 1999·59 cites·4 claims
- 3776US7404160B2Method and system for hardware based reporting of assertion information for emulation and hardware accelerationQUICKTURN DESIGN SYSTEMS INC·Filed 2005·Granted Jul 22, 2008·18 cites·40 claims
- 3876US5448522AMulti-port memory emulation using tag registersQUICKTURN DESIGN SYSTEMS INC·Filed 1994·Granted Sep 5, 1995·34 cites·5 claims
- 3975US6882176B1High-performance programmable logic architectureQUICKTURN DESIGN SYSTEMS INC·Filed 2003·Granted Apr 19, 2005·14 cites·29 claims
- 4075US5970240AMethod and apparatus for configurable memory emulationQUICKTURN DESIGN SYSTEMS INC·Filed 1997·Granted Oct 19, 1999·80 cites·4 claims
- 4175US5940603AMethod and apparatus for emulating multi-ported memory circuitsQUICKTURN DESIGN SYSTEMS INC·Filed 1997·Granted Aug 17, 1999·77 cites·26 claims
- 4274US7640155B2Extensible memory architecture and communication protocol for supporting multiple devices in low-bandwidth, asynchronous applicationsQUICKTURN DESIGN SYSTEMS INC·Filed 2005·Granted Dec 29, 2009·8 cites·21 claims
- 4374US5644515AHardware logic emulation system capable of probing internal nodes in a circuit design undergoing emulationQUICKTURN DESIGN SYSTEMS INC·Filed 1995·Granted Jul 1, 1997·59 cites·11 claims
- 4473US5734581AMethod for implementing tri-state nets in a logic emulation systemQUICKTURN DESIGN SYSTEMS INC·Filed 1996·Granted Mar 31, 1998·37 cites·2 claims
- 4572US7577558B2System and method for providing compact mapping between dissimilar memory systemsQUICKTURN DESIGN SYSTEMS INC·Filed 2006·Granted Aug 18, 2009·8 cites·2 claims
- 4672US6782355B1Apparatus for improving concurrent behavior modeling with emulationQUICKTURN DESIGN SYSTEMS INC·Filed 2000·Granted Aug 24, 2004·23 cites·10 claims
- 4771US6377911B1Apparatus for emulation of electronic hardware systemQUICKTURN DESIGN SYSTEMS INC·Filed 1999·Granted Apr 23, 2002·44 cites·6 claims
- 4870US7440866B2System and method for validating an input/output voltage of a target systemQUICKTURN DESIGN SYSTEMS INC·Filed 2005·Granted Oct 21, 2008·6 cites·28 claims
- 4970US6850880B1High speed software driven emulator comprised of a plurality of emulation processors with an improved maintenance bus that streams data at high speedQUICKTURN DESIGN SYSTEMS INC·Filed 2000·Granted Feb 1, 2005·18 cites·7 claims
- 5069US6151258AProgrammable logic device with multi-port memoryQUICKTURN DESIGN SYSTEMS INC·Filed 1999·Granted Nov 21, 2000·13 cites·18 claims
Showing the top 50 of 79 patent records by PatentIndex Score.
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