Inventor · disambiguated record
Morihito Hasegawa
Also filed as: HASEGAWA MORIHITO
33 granted patents·1 pending application·481 citations·filing 1996–2014
97Inventor score
Files withFUJITSU LTD14FUJITSU SEMICONDUCTOR LTD10FUJITSU MICROELECTRONICS LTD5HASEGAWA MORIHITO4SOCIONEXT INC1
Top patents by PatentIndex Score
34 records- 0196US7456623B2DC-DC converter and control circuit for DC-DC converterFUJITSU LTD·Filed 2006·Granted Nov 25, 2008·60 cites·18 claims
- 0295US7609039B2Controller and control method for DC-DC converterFUJITSU MICROELECTRONICS LTD·Filed 2006·Granted Oct 27, 2009·55 cites·17 claims
- 0389US7843179B2Control circuit for synchronous rectifier-type DC-DC converter, synchronous rectifier-type DC-DC converter and control method thereofFUJITSU SEMICONDUCTOR LTD·Filed 2007·Granted Nov 30, 2010·27 cites·21 claims
- 0489US7193401B1Control circuit and control method for DC-DC converterFUJITSU LTD·Filed 2006·Granted Mar 20, 2007·28 cites·9 claims
- 0588US8248046B2DC-DC converter for pulse frequency modulation control and power supply systemHASEGAWA MORIHITO·Filed 2008·Granted Aug 21, 2012·27 cites·17 claims
- 0687US7821236B2Control circuit for detecting a reverse current in a DC-DC converterFUJITSU SEMICONDUCTOR LTD·Filed 2007·Granted Oct 26, 2010·25 cites·22 claims
- 0784US7122995B2Multi-phase DC-DC converter and control circuit for multi-phase DC-DC converterFUJITSU LTD·Filed 2005·Granted Oct 17, 2006·20 cites·20 claims
- 0883US6515525B2Fractional-N-PLL frequency synthesizer and phase error canceling method thereforFUJITSU LTD·Filed 2001·Granted Feb 4, 2003·29 cites·16 claims
- 0982US6031425ALow power prescaler for a PLL circuitFUJITSU LTD·Filed 1998·Granted Feb 29, 2000·41 cites·30 claims
- 1080US7279870B2DC-DC converter and method of controlling DC-DC converterFUJITSU LTD·Filed 2006·Granted Oct 9, 2007·10 cites·7 claims
- 1179US7733074B2Control circuit of current mode DC-DC converter and control method of current mode DC-DC converterFUJITSU MICROELECTRONICS LTD·Filed 2007·Granted Jun 8, 2010·14 cites·13 claims
- 1279US7268448B2Plural output switching regulator with phase comparison and delay meansFUJITSU LTD·Filed 2006·Granted Sep 11, 2007·15 cites·7 claims
- 1378US7423415B2DC-DC converter and its control method, and switching regulator and its control methodFUJITSU LTD·Filed 2006·Granted Sep 9, 2008·7 cites·11 claims
- 1477US8760133B2Linear drop-out regulator circuitHASEGAWA MORIHITO·Filed 2008·Granted Jun 24, 2014·13 cites·20 claims
- 1574US7936156B2DC-DC converter and control method thereofFUJITSU SEMICONDUCTOR LTD·Filed 2008·Granted May 3, 2011·7 cites·14 claims
- 1672US7777473B2DC-DC converter and control circuit for DC-DC converterFUJITSU SEMICONDUCTOR LTD·Filed 2008·Granted Aug 17, 2010·8 cites·3 claims
- 1771US7298117B2Step-up (boost) DC regulator with two-level back-bias switch gate voltageFUJITSU LTD·Filed 2006·Granted Nov 20, 2007·11 cites·11 claims
- 1870US7781909B2Control circuit of power supply, power supply and control method thereofFUJITSU SEMICONDUCTOR LTD·Filed 2006·Granted Aug 24, 2010·4 cites·17 claims
- 1969US7714557B2DC-DC converter, power supply system, and power supply methodFUJITSU MICROELECTRONICS LTD·Filed 2008·Granted May 11, 2010·9 cites·20 claims
- 2068US8233257B2Power supply circuit, overcurrent protection circuit for the same, and electronic deviceHASEGAWA MORIHITO·Filed 2009·Granted Jul 31, 2012·7 cites·9 claims
- 2167US9301278B2Power supply control circuit, power supply device, electronic apparatus, and power supply control methodSOCIONEXT INC·Filed 2014·Granted Mar 29, 2016·2 cites·18 claims
- 2266US7705483B2DC-DC converter control circuit, DC-DC converter, power supply unit, and DC-DC converter control methodFUJITSU MICROELECTRONICS LTD·Filed 2006·Granted Apr 27, 2010·7 cites·14 claims
- 2363US7957165B2DC-DC converter with a plurality of soft-start control circuitsFUJITSU SEMICONDUCTOR LTD·Filed 2008·Granted Jun 7, 2011·6 cites·8 claims
- 2463US5896066APLL synthesizer having a reset circuitFUJITSU LTD·Filed 1996·Granted Apr 20, 1999·26 cites·10 claims
- 2560US7944190B2Control circuit of power supply unit which controls output power of external power supply based upon current from the external power supply, power supply unit and control method thereofFUJITSU SEMICONDUCTOR LTD·Filed 2007·Granted May 17, 2011·4 cites·15 claims
- 2660US7279990B2Sigma-delta modulator for PLL circuitsFUJITSU LTD·Filed 2006·Granted Oct 9, 2007·4 cites·11 claims
- 2758US7876076B2Circuit for preventing through current in DC-DC converterFUJITSU SEMICONDUCTOR LTD·Filed 2007·Granted Jan 25, 2011·4 cites·15 claims
- 2858US7545054B2DC linear regulator single controller with plural loadsFUJITSU MICROELECTRONICS LTD·Filed 2006·Granted Jun 9, 2009·4 cites·18 claims
- 2956US7224152B2DC-DC converter and control circuit for DC-DC converterFUJITSU LTD·Filed 2005·Granted May 29, 2007·4 cites·20 claims
- 3055US7916503B2DC-DC converter, power supply voltage supplying method, and power supply voltage supplying systemFUJITSU SEMICONDUCTOR LTD·Filed 2008·Granted Mar 29, 2011·3 cites·20 claims
- 3140US7948219B2Control circuit of synchronous rectification type power supply unit, synchronous rectification type power supply unit and control method thereofFUJITSU SEMICONDUCTOR LTD·Filed 2007·Granted May 24, 2011·0 cites·17 claims
- 3239US7388438B2ΣΔ modulator for PLL circuitFUJITSU LTD·Filed 2005·Granted Jun 17, 2008·0 cites·18 claims
- 3338US8406364B2Fractional frequency divider PLL device and control method thereofHASEGAWA MORIHITO·Filed 2008·Granted Mar 26, 2013·0 cites·12 claims
- 3433US2002003443A1Toggle flip-flop circuit, prescaler, and PLL circuitFUJITSU LTD·Filed 2001·Application pending·0 cites
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