Inventor · disambiguated record
Yasuhiro Nihei
Also filed as: NIHEI YASUHIRO
46 granted patents·8 pending applications·880 citations·filing 2002–2017
98Inventor score
Top patents by PatentIndex Score
54 records- 0197US7701480B2Light-source driving device, optical scanning device, and image forming apparatusRICOH KK·Filed 2008·Granted Apr 20, 2010·34 cites·8 claims
- 0296US7327379B2Pixel clock and pulse-modulation-signal generating device, optical scanner, and image forming apparatusRICOH KK·Filed 2005·Granted Feb 5, 2008·36 cites·4 claims
- 0395US7271824B2Pixel clock generating apparatus, optical writing apparatus using a pixel clock, imaging apparatus, and method for generating pixel clocksRICOH KK·Filed 2002·Granted Sep 18, 2007·83 cites·35 claims
- 0495US6933957B2Pixel clock generation apparatus, pixel clock generation method, and image forming apparatus capable of correcting main scan dot position shift with a high degree of accuracyRICOH KK·Filed 2003·Granted Aug 23, 2005·63 cites·46 claims
- 0595US6917639B2Laser driver circuitRICOH KK·Filed 2002·Granted Jul 12, 2005·61 cites·31 claims
- 0695US6731317B2Pulse modulation signal generation circuit, and semiconductor laser modulation device, optical scanning device and image formation device using the sameRICOH KK·Filed 2002·Granted May 4, 2004·84 cites·47 claims
- 0794US8237760B2Light-source driving device, optical scanning device, and counting methodNIHEI YASUHIRO·Filed 2009·Granted Aug 7, 2012·20 cites·15 claims
- 0894US7256815B2Image forming method, image forming apparatus, optical scan device, and image forming apparatus using the sameRICOH KK·Filed 2002·Granted Aug 14, 2007·58 cites·38 claims
- 0993US7283151B2Pixel clock generation device causing state transition of pixel clock according to detected state transition and phase data indicating phase shift amountRICOH KK·Filed 2003·Granted Oct 16, 2007·81 cites·40 claims
- 1092US6791596B2Method and apparatus for image forming capable of effectively generating pixel clock pulsesRICOH KK·Filed 2002·Granted Sep 14, 2004·84 cites·101 claims
- 1191US7515170B2Optical scanner and image forming apparatusRICOH KK·Filed 2006·Granted Apr 7, 2009·15 cites·15 claims
- 1291US6927789B2Pixel clock generating device, laser scanning device, and image forming deviceRICOH KK·Filed 2003·Granted Aug 9, 2005·52 cites·12 claims
- 1390US7528625B2Image forming apparatusRICOH KK·Filed 2005·Granted May 5, 2009·22 cites·31 claims
- 1489US8310516B2Light scanning apparatus, light scanning method, image forming apparatus, color image forming apparatus, and recording medium having programTANABE JUN·Filed 2006·Granted Nov 13, 2012·11 cites·15 claims
- 1589US7826110B2Light scanning apparatus, light scanning method, image forming apparatus, and color image forming apparatusRICOH KK·Filed 2007·Granted Nov 2, 2010·12 cites·20 claims
- 1686US8610971B2Image forming apparatusOMORI ATSUFUMI·Filed 2011·Granted Dec 17, 2013·4 cites·19 claims
- 1786US7920305B2Optical scanning device, optical scanning method, computer program product for executing optical scanning method, recording medium with computer program recorded thereon, image forming apparatus, and color image forming apparatus using the sameRICOH CO LTD·Filed 2007·Granted Apr 5, 2011·9 cites·19 claims
- 1886US7212224B2Pixel clock creation method, pixel clock creation device, optical scanning device, and image forming apparatusRICOH KK·Filed 2004·Granted May 1, 2007·37 cites·14 claims
- 1983US8310513B2Light-source driving device, optical scanning device, and image forming apparatusNIHEI YASUHIRO·Filed 2010·Granted Nov 13, 2012·6 cites·14 claims
- 2082US7936367B2Image forming apparatus controlling the output level of the light sourceRICOH CO LTD·Filed 2008·Granted May 3, 2011·6 cites·21 claims
- 2179US9983531B2Moving-member detecting device and image forming apparatusKUDO KOICHI·Filed 2013·Granted May 29, 2018·2 cites·10 claims
- 2278US9035988B2Light source driving device, light scanning device and image forming apparatusNIHEI YASUHIRO·Filed 2008·Granted May 19, 2015·5 cites·10 claims
- 2378US7456856B2Clock signal generation circuit, optical scanning apparatus, and image forming apparatusRICOH KK·Filed 2006·Granted Nov 25, 2008·8 cites·9 claims
- 2477US9228825B2Positional change measurement device, positional change measurement method, and image forming apparatusTAKAURA ATSUSHI·Filed 2014·Granted Jan 5, 2016·4 cites·19 claims
- 2577US7671882B2Semiconductor laser modulation driving apparatus and image forming apparatusRICOH KK·Filed 2005·Granted Mar 2, 2010·5 cites·19 claims
- 2677US7496121B2Laser modulating and driving device and image reproducing apparatus using the sameRICOH KK·Filed 2004·Granted Feb 24, 2009·15 cites·27 claims
- 2776US10739446B2Range-finding deviceRICOH CO LTD·Filed 2017·Granted Aug 11, 2020·3 cites·10 claims
- 2876US8089665B2Optical scanning device moving gravity center of pixel in sub-scanning direction, image forming apparatus having light sources, and methodOMORI ATSUFUMI·Filed 2007·Granted Jan 3, 2012·4 cites·20 claims
- 2975US8270026B2Light source driving device with relationship-based drive signal generating circuit, optical scanning device, and image forming apparatusNIHEI YASUHIRO·Filed 2009·Granted Sep 18, 2012·4 cites·9 claims
- 3075US8005321B2Pixel clock generator, optical scanner, and image forming apparatusRICOH CO LTD·Filed 2005·Granted Aug 23, 2011·4 cites·15 claims
- 3174US7936493B2Dot position correcting apparatus, optical scanning apparatus, imaging apparatus, and color imaging apparatusRICOH CO LTD·Filed 2006·Granted May 3, 2011·4 cites·4 claims
- 3274US7760223B2Optical scan apparatus and image formation apparatusRICOH KK·Filed 2008·Granted Jul 20, 2010·6 cites·12 claims
- 3371US8253768B2Optical scanner and image forming apparatusISHIDA MASAAKI·Filed 2006·Granted Aug 28, 2012·5 cites·11 claims
- 3470US10596964B2Distance measurement device, moveable device, and distance measuring methodRICOH CO LTD·Filed 2017·Granted Mar 24, 2020·2 cites·11 claims
- 3569US7193480B2Voltage controlled oscillator, PLL circuit, pulse modulation signal generating circuit, semiconductor laser modulation device and image forming apparatusRICOH KK·Filed 2004·Granted Mar 20, 2007·13 cites·2 claims
- 3668US7834902B2Pixel clock creation method, pixel clock creation device, optical scanning device, and image forming apparatusRICOH CO LTD·Filed 2007·Granted Nov 16, 2010·3 cites·12 claims
- 3765US10775502B2Distance-measuring apparatus, mobile object, robot, three-dimensional measuring device, surveillance camera, and distance-measuring methodRICOH CO LTD·Filed 2017·Granted Sep 15, 2020·1 cites·18 claims
- 3865US7995251B2Optical scanning device, optical scanning method, and image forming apparatusRICOH CO LTD·Filed 2008·Granted Aug 9, 2011·3 cites·19 claims
- 3957US7009430B2Circuit for generating pixel clock with fine phase controlRICOH KK·Filed 2004·Granted Mar 7, 2006·9 cites·9 claims
- 4056US7973817B2Pixel clock and pulse-modulation-signal generating device, optical scanner, and image forming apparatusRICOH CO LTD·Filed 2007·Granted Jul 5, 2011·0 cites·9 claims
- 4155US8446444B2Optical scanning device and image forming apparatusISHIDA MASAAKI·Filed 2009·Granted May 21, 2013·1 cites·6 claims
- 4252US2008042700A1Pixel clock generation device causing state transition of pixel clock according to detected state transition and phase data indicating phase shift amountNIHEI YASUHIRO·Filed 2007·Application pending·0 cites
- 4349US7400210B2Voltage controlled oscillator, PLL circuit, pulse modulation signal generating circuit, semiconductor laser modulation device and image forming apparatusRICOH KK·Filed 2006·Granted Jul 15, 2008·1 cites·6 claims
- 4448US2007242127A1Pixel clock generating apparatus, optical writing apparatus using a pixel clock, imaging apparatus, and method for generating pixel clocksOMORI ATSUFUMI·Filed 2007·Application pending·0 cites
- 4546US10705215B2Distance measurement apparatus, and method of measuring distanceRICOH CO LTD·Filed 2017·Granted Jul 7, 2020·0 cites·10 claims
- 4646US2007030548A1Apparatus for generating pulse-modulated signalNIHEI YASUHIRO·Filed 2006·Application pending·0 cites
- 4746US2015092994A1Eligible operator determination device and eligible operator determination methodMASUDA KOJI·Filed 2014·Application pending·0 cites
- 4845US8760738B2Method of measuring a deviation in timing of a start of writing in scanning lines, optical scanning device, and image forming apparatusNIHEI YASUHIRO·Filed 2010·Granted Jun 24, 2014·0 cites·16 claims
- 4944US2010119262A1Light source device, optical scanning device, and image forming apparatusRICOH KK·Filed 2009·Application pending·0 cites
- 5043US10481263B2Range finding apparatus, moveable apparatus, robot, three dimensional measurement apparatus, method of measuring three dimensional information, and storage mediumRICOH CO LTD·Filed 2017·Granted Nov 19, 2019·0 cites·19 claims
Showing the top 50 of 54 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →