Inventor · disambiguated record
Hung C. Ngo
Also filed as: NGO HUNG C · NGO HUNG CAI
97 granted patents·5 pending applications·1,395 citations·filing 1993–2012
99Inventor score
Top patents by PatentIndex Score
102 records- 0195US7408829B2Methods and arrangements for enhancing power management systems in integrated circuitsIBM·Filed 2006·Granted Aug 5, 2008·32 cites·8 claims
- 0294US7219244B2Control circuitry for power gating virtual power supply rails at differing voltage potentialsIBM·Filed 2005·Granted May 15, 2007·27 cites·20 claims
- 0392US6650145B2Circuits and systems for limited switch dynamic logicIBM·Filed 2002·Granted Nov 18, 2003·47 cites·24 claims
- 0492US6501313B2Dynamic duty cycle adjusterIBM·Filed 2000·Granted Dec 31, 2002·48 cites·19 claims
- 0591US7551508B2Energy efficient storage device using per-element selectable power supply voltagesIBM·Filed 2007·Granted Jun 23, 2009·19 cites·14 claims
- 0691US7088154B2Methods and arrangements for a low power phase-locked loopIBM·Filed 2005·Granted Aug 8, 2006·19 cites·18 claims
- 0790US7349271B2Cascaded test circuit with inter-bitline drive devices for evaluating memory cell performanceIBM·Filed 2005·Granted Mar 25, 2008·21 cites·14 claims
- 0890US6515530B1Dynamically scalable low voltage clock generation systemIBM·Filed 2001·Granted Feb 4, 2003·65 cites·26 claims
- 0989US7414904B2Method for evaluating storage cell design using a wordline timing and cell access detection circuitIBM·Filed 2006·Granted Aug 19, 2008·22 cites·2 claims
- 1089US7276932B2Power-gating cell for virtual power rail controlIBM·Filed 2004·Granted Oct 2, 2007·39 cites·16 claims
- 1189US6690204B1Limited switch dynamic logic circuitIBM·Filed 2002·Granted Feb 10, 2004·37 cites·24 claims
- 1287US7372305B1Scannable dynamic logic latch circuitIBM·Filed 2006·Granted May 13, 2008·15 cites·20 claims
- 1386US6943599B2Methods and arrangements for a low power phase-locked loopIBM·Filed 2003·Granted Sep 13, 2005·28 cites·19 claims
- 1486US6501304B1Glitch-less clock selectorIBM·Filed 2001·Granted Dec 31, 2002·44 cites·23 claims
- 1585US7952422B2Methods and apparatus for varying a supply voltage or reference voltage using independent control of diode voltage in asymmetrical double-gate devicesIBM·Filed 2009·Granted May 31, 2011·11 cites·6 claims
- 1684US7733720B2Method and system for determining element voltage selection control values for a storage deviceIBM·Filed 2007·Granted Jun 8, 2010·15 cites·24 claims
- 1784US6763474B1System for synchronizing nodes in a heterogeneous computer system by using multistage frequency synthesizer to dynamically adjust clock frequency of the nodesIBM·Filed 2000·Granted Jul 13, 2004·35 cites·12 claims
- 1883US8261138B2Test structure for characterizing multi-port static random access memory and register file arraysCHANG LELAND·Filed 2006·Granted Sep 4, 2012·12 cites·12 claims
- 1983US7995418B2Method and computer program for controlling a storage device having per-element selectable power supply voltagesIBM·Filed 2009·Granted Aug 9, 2011·10 cites·20 claims
- 2083US7323908B2Cascaded pass-gate test circuit with interposed split-output drive devicesIBM·Filed 2005·Granted Jan 29, 2008·10 cites·15 claims
- 2183US7298176B2Dual-gate dynamic logic circuit with pre-charge keeperIBM·Filed 2005·Granted Nov 20, 2007·12 cites·20 claims
- 2283US7266707B2Dynamic leakage control circuitIBM·Filed 2004·Granted Sep 4, 2007·34 cites·17 claims
- 2383US7129754B2Controlled load limited switch dynamic logic circuitryIBM·Filed 2005·Granted Oct 31, 2006·13 cites·19 claims
- 2483US6483888B1Clock divider with bypass and stop clockIBM·Filed 2001·Granted Nov 19, 2002·34 cites·20 claims
- 2581US6404235B1System and method for reducing latency in a dynamic circuitIBM·Filed 2000·Granted Jun 11, 2002·23 cites·13 claims
- 2680US7288975B2Method and apparatus for fail-safe and restartable system clock generationIBM·Filed 2005·Granted Oct 30, 2007·11 cites·24 claims
- 2780US6809602B2Multi-mode VCOIBM·Filed 2001·Granted Oct 26, 2004·22 cites·24 claims
- 2879US6872991B1Low gate-leakage virtual rail circuitIBM·Filed 2004·Granted Mar 29, 2005·20 cites·28 claims
- 2979US6529084B1Interleaved feedforward VCO and PLLIBM·Filed 2001·Granted Mar 4, 2003·23 cites·23 claims
- 3078US7545690B2Method for evaluating memory cell performanceIBM·Filed 2007·Granted Jun 9, 2009·9 cites·8 claims
- 3178US6980018B2Self limiting gate leakage driverINTERNATIIONAL BUSINESS MACHIN·Filed 2004·Granted Dec 27, 2005·20 cites·20 claims
- 3276US7002420B2Interleaved VCO with body voltage frequency range controlIBM·Filed 2004·Granted Feb 21, 2006·18 cites·39 claims
- 3376US6963250B2Voltage controlled oscillator with selectable frequency rangesIBM·Filed 2003·Granted Nov 8, 2005·18 cites·15 claims
- 3474US7719315B2Programmable local clock bufferIBM·Filed 2006·Granted May 18, 2010·7 cites·21 claims
- 3574US6956793B2Phase clock selector for generating a non-integer frequency divisionIBM·Filed 2003·Granted Oct 18, 2005·19 cites·20 claims
- 3674US6675182B1Method and apparatus for performing rotate operations using cascaded multiplexersIBM·Filed 2000·Granted Jan 6, 2004·21 cites·6 claims
- 3774US6335900B1Method and apparatus for selectable wordline boosting in a memory deviceIBM·Filed 2000·Granted Jan 1, 2002·20 cites·11 claims
- 3874US5375223ASingle register arbiter circuitIBM·Filed 1993·Granted Dec 20, 1994·74 cites·12 claims
- 3972US6919739B2Feedforward limited switch dynamic logic circuitIBM·Filed 2003·Granted Jul 19, 2005·15 cites·16 claims
- 4072US6285218B1Method and apparatus for implementing logic using mask-programmable dynamic logic gatesIBM·Filed 2000·Granted Sep 4, 2001·15 cites·20 claims
- 4171US6960939B2Limited switch dynamic logic circuit with keeperIBM·Filed 2003·Granted Nov 1, 2005·15 cites·11 claims
- 4270US8555119B2Test structure for characterizing multi-port static random access memory and register file arraysCHANG LELAND·Filed 2012·Granted Oct 8, 2013·3 cites·9 claims
- 4370US7760565B2Wordline-to-bitline output timing ring oscillator circuit for evaluating storage array performanceIBM·Filed 2007·Granted Jul 20, 2010·7 cites·20 claims
- 4470US6566921B1Apparatus and method for high resolution frequency adjustment in a multistage frequency synthesizerIBM·Filed 2000·Granted May 20, 2003·19 cites·28 claims
- 4570US6292027B1Fast low-power logic gates and method for evaluating logic signalsIBM·Filed 1999·Granted Sep 18, 2001·22 cites·18 claims
- 4669US6888377B2Duo-mode keeper circuitIBM·Filed 2003·Granted May 3, 2005·13 cites·21 claims
- 4769US6529082B1Dual mode charge pumpIBM·Filed 2001·Granted Mar 4, 2003·16 cites·19 claims
- 4869US6522207B1Apparatus and method for dynamic frequency adjustment in a frequency synthesizerIBM·Filed 2000·Granted Feb 18, 2003·17 cites·15 claims
- 4968US7459950B2Pulsed local clock buffer (LCB) characterization ring oscillatorIBM·Filed 2006·Granted Dec 2, 2008·5 cites·6 claims
- 5068US7046063B2Interface circuit for coupling between logic circuit domainsIBM·Filed 2004·Granted May 16, 2006·12 cites·24 claims
Showing the top 50 of 102 patent records by PatentIndex Score.
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