Inventor · disambiguated record
Shigeyuki Unagami
Also filed as: UNAGAMI SHIGEYUKI
19 granted patents·741 citations·filing 1979–1994
96Inventor score
Files withFUJITSU LTD19
Top patents by PatentIndex Score
19 records- 0184US5261027ACode excited linear prediction speech coding systemFUJITSU LTD·Filed 1992·Granted Nov 9, 1993·122 cites·36 claims
- 0281US4951269AEcho canceller with short processing delay and decreased multiplication numberFUJITSU LTD·Filed 1987·Granted Aug 21, 1990·34 cites·12 claims
- 0380US5115469ASpeech encoding/decoding apparatus having selected encodersFUJITSU LTD·Filed 1989·Granted May 19, 1992·79 cites·12 claims
- 0473US5086471AGain-shape vector quantization apparatusFUJITSU LTD·Filed 1990·Granted Feb 4, 1992·68 cites·4 claims
- 0573US4571733AAutomatic equalization device and method of starting-up the sameFUJITSU LTD·Filed 1982·Granted Feb 18, 1986·32 cites·8 claims
- 0672US5091955AVoice coding/decoding system having selected coders and entropy codersFUJITSU LTD·Filed 1990·Granted Feb 25, 1992·71 cites·59 claims
- 0770US4890325ASpeech coding transmission equipmentFUJITSU LTD·Filed 1988·Granted Dec 26, 1989·35 cites·6 claims
- 0869US5159611AVariable rate coderFUJITSU LTD·Filed 1992·Granted Oct 27, 1992·31 cites·14 claims
- 0967US4482973ADigital automatic gain control circuitFUJITSU LTD·Filed 1982·Granted Nov 13, 1984·17 cites·5 claims
- 1067US4312075ATiming-phase recovery circuitFUJITSU LTD·Filed 1979·Granted Jan 19, 1982·20 cites·19 claims
- 1165US5138662ASpeech coding apparatusFUJITSU LTD·Filed 1990·Granted Aug 11, 1992·48 cites·13 claims
- 1265US4831636ACoding transmission equipment for carrying out coding with adaptive quantizationFUJITSU LTD·Filed 1987·Granted May 16, 1989·37 cites·46 claims
- 1360US5528687AEcho cancellerFUJITSU LTD·Filed 1994·Granted Jun 18, 1996·29 cites·40 claims
- 1457US5224167ASpeech coding apparatus using multimode codingFUJITSU LTD·Filed 1990·Granted Jun 29, 1993·36 cites·19 claims
- 1554US5263119AGain-shape vector quantization method and apparatusFUJITSU LTD·Filed 1991·Granted Nov 16, 1993·29 cites·15 claims
- 1645US5274741ASpeech coding apparatus for separately processing divided signal vectorsFUJITSU LTD·Filed 1990·Granted Dec 28, 1993·19 cites·7 claims
- 1745US5103481AVoice detection apparatusFUJITSU LTD·Filed 1990·Granted Apr 7, 1992·20 cites·19 claims
- 1844US4445224APull-in circuit for a digital phase locked loopFUJITSU LTD·Filed 1981·Granted Apr 24, 1984·11 cites·12 claims
- 1929US5231692APitch period searching method and circuit for speech codecFUJITSU LTD·Filed 1990·Granted Jul 27, 1993·3 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →