Inventor · disambiguated record
Takanori Iwamatsu
Also filed as: IWAMATSU TAKANORI
61 granted patents·5 pending applications·1,290 citations·filing 1987–2018
99Inventor score
Top patents by PatentIndex Score
66 records- 0189US7167456B2Apparatus for estimating propagation path characteristicsFUJITSU LTD·Filed 2002·Granted Jan 23, 2007·69 cites·10 claims
- 0287US8249001B2Base station apparatus, mobile station apparatus, and method of assigning subcarriersOOTA YOSHIYUKI·Filed 2008·Granted Aug 21, 2012·18 cites·11 claims
- 0385US5400366AQuasi-synchronous detection and demodulation circuit and frequency discriminator used for the sameFUJITSU LTD·Filed 1993·Granted Mar 21, 1995·53 cites·7 claims
- 0484US4914676ACross polarization interference cancellerFUJITSU LTD·Filed 1988·Granted Apr 3, 1990·73 cites·14 claims
- 0583US5661761AQuasi-synchronous detection and demodulation circuit and frequency discriminator used for the sameFUJITSU LTD·Filed 1995·Granted Aug 26, 1997·48 cites·1 claims
- 0681US4912726ADecision timing control circuitFUJITSU LTD·Filed 1988·Granted Mar 27, 1990·66 cites·19 claims
- 0779US8558615B2Apparatus for and method of controlling a predistorter, and method of detecting power control stateLI HUI·Filed 2011·Granted Oct 15, 2013·5 cites·10 claims
- 0879US6236263B1Demodulator having cross polarization interference canceling functionFUJITSU LTD·Filed 1997·Granted May 22, 2001·61 cites·9 claims
- 0979US5844950ACross polarization interference canceler and cross polarization interference eliminating apparatus using the sameNIPPON TELEGRAPH & TELEPHONE·Filed 1997·Granted Dec 1, 1998·57 cites·7 claims
- 1078US5872812ACarrier reproducing circuit including region deciding circuitryFUJITSU LTD·Filed 1996·Granted Feb 16, 1999·112 cites·4 claims
- 1175US6683906B1Radio communication apparatusFUJITSU LTD·Filed 2000·Granted Jan 27, 2004·15 cites·21 claims
- 1274US8477751B2Mobile station communication device, inter-mobile station communication system, and inter-mobile station communication methodNAKAYA YUUTA·Filed 2011·Granted Jul 2, 2013·4 cites·2 claims
- 1374US6487261B2Distortion compensating deviceFUJITSU LTD·Filed 2001·Granted Nov 26, 2002·15 cites·6 claims
- 1473US5920595AInter-cross wave compensation method and apparatus performing frequency conversion on signed not detected by a demodulating unitFUJITSU LTD·Filed 1996·Granted Jul 6, 1999·35 cites·21 claims
- 1573US4788696ADecision timing control circuitFUJITSU LTD·Filed 1987·Granted Nov 29, 1988·57 cites·6 claims
- 1672US8364096B2Transmission device, and array antenna control method and deviceFUJITSU LTD·Filed 2009·Granted Jan 29, 2013·4 cites·18 claims
- 1772US7551678B2OFDM transceiver apparatusFUJITSU LTD·Filed 2005·Granted Jun 23, 2009·6 cites·3 claims
- 1872US6707846B1Correlation energy detector and radio communication apparatusFUJITSU LTD·Filed 2000·Granted Mar 16, 2004·13 cites·4 claims
- 1972US5852629ARepeaterFUJITSU LTD·Filed 1994·Granted Dec 22, 1998·48 cites·2 claims
- 2071US6029056ASpace diversity receiving apparatusFUJITSU LTD·Filed 1997·Granted Feb 22, 2000·41 cites·13 claims
- 2170US9647858B2Optimizing apparatus and method for a pulse shaping filter and a transmitterFUJITSU LTD·Filed 2015·Granted May 9, 2017·2 cites·8 claims
- 2270US6987814B2Distortion compensating deviceFUJITSU LTD·Filed 2002·Granted Jan 17, 2006·10 cites·9 claims
- 2368US9413302B2Digital predistortion apparatus and methodFUJITSU LTD·Filed 2014·Granted Aug 9, 2016·3 cites·12 claims
- 2468US9225363B2Digital pre-distortion transmitter and method for controlling the sameFUJITSU LTD·Filed 2014·Granted Dec 29, 2015·4 cites·18 claims
- 2568US6175591B1Radio receiving apparatusFUJITSU LTD·Filed 1998·Granted Jan 16, 2001·22 cites·13 claims
- 2667US5594389ACarrier regeneration circuit including area judging deviceFUJITSU LTD·Filed 1995·Granted Jan 14, 1997·31 cites·4 claims
- 2765US7564407B2Directivity control apparatus of array antenna and directivity controlling methodFUJITSU LTD·Filed 2007·Granted Jul 21, 2009·5 cites·10 claims
- 2865US6690714B1Method and apparatus for achieving demodulation in radio communications system using M-sequence orthogonal modulationFUJITSU LTD·Filed 2000·Granted Feb 10, 2004·8 cites·40 claims
- 2962US9209913B2Temperature compensation method and apparatus for received signal strength indicatorFUJITSU LTD·Filed 2013·Granted Dec 8, 2015·1 cites·19 claims
- 3062US5406589AFractionally spaced cross-polarization interference cancellerFUJITSU LTD·Filed 1992·Granted Apr 11, 1995·33 cites·11 claims
- 3161US9584167B2Wireless communication system, distortion compensation device, and distortion compensation methodFUJITSU LTD·Filed 2015·Granted Feb 28, 2017·2 cites·10 claims
- 3261US6201841B1Distortion compensating deviceFUJITSU LTD·Filed 1995·Granted Mar 13, 2001·36 cites·2 claims
- 3360US9190972B2Automatic gain control device and method, power adjusting device and radio transmitting systemFUJITSU LTD·Filed 2013·Granted Nov 17, 2015·1 cites·16 claims
- 3458US9036736B2Method and apparatus for controlling update of digital pre-distortion coefficientFUJITSU LTD·Filed 2013·Granted May 19, 2015·2 cites·9 claims
- 3558US6034564ADemodulator using quasi-synchronous detection to demodulate modulated quadrature input signalsFUJITSU LTD·Filed 1997·Granted Mar 7, 2000·37 cites·21 claims
- 3658US5005186ADigital demodulator apparatusFUJITSU LTD·Filed 1988·Granted Apr 2, 1991·22 cites·18 claims
- 3757US8254509B2ReceiverUMEDA MASATAKA·Filed 2011·Granted Aug 28, 2012·1 cites·13 claims
- 3857USRE40695EClock phase detecting circuit and clock regenerating circuit each arranged in receiving unit of multiplex radio equipmentFUJITSU LTD·Filed 2001·Granted Apr 7, 2009·4 cites·14 claims
- 3956US5781076ADigital quadrature amplitude modulatorsFUJITSU LTD·Filed 1996·Granted Jul 14, 1998·27 cites·7 claims
- 4055US5987071ADigital modulator and digital demodulatorFUJITSU LTD·Filed 1998·Granted Nov 16, 1999·25 cites·3 claims
- 4155US5867542AClock phase detecting circuit and clock regenerating circuit each arranged in receiving unit of multiplex radio equipmentFUJITSU LTD·Filed 1995·Granted Feb 2, 1999·31 cites·14 claims
- 4254US5594759AQuasi-synchronous detection and demodulation circuit and frequency discriminator used for the sameFUJITSU LTD·Filed 1996·Granted Jan 14, 1997·12 cites·5 claims
- 4353US4860316AMultilevel amplitude modulation and demodulation communication systemFUJITSU LTD·Filed 1988·Granted Aug 22, 1989·18 cites·22 claims
- 4452US7577219B2Apparatus for communicationsFUJITSU MICROELECTRONICS LTD·Filed 2006·Granted Aug 18, 2009·1 cites·17 claims
- 4549US5978415AAutomatic amplitude equalizerFUJITSU LTD·Filed 1995·Granted Nov 2, 1999·24 cites·45 claims
- 4649US2009219977A1Radio communication apparatusFUJITSU LTD·Filed 2009·Application pending·0 cites
- 4747US5956374AJitter suppressing circuitFUJITSU LTD·Filed 1996·Granted Sep 21, 1999·20 cites·18 claims
- 4846US10277261B2Distortion compensation apparatus and distortion compensation methodFUJITSU LTD·Filed 2018·Granted Apr 30, 2019·0 cites·6 claims
- 4946US6028902AClock phase detecting circuitFUJITSU LTD·Filed 1997·Granted Feb 22, 2000·20 cites·6 claims
- 5046US2010001904A1Radio communication apparatus and systemFUJITSU LTD·Filed 2009·Application pending·0 cites
Showing the top 50 of 66 patent records by PatentIndex Score.
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