Inventor · disambiguated record
Hidetoshi Ema
Also filed as: EMA HIDETOSHI
30 granted patents·1,039 citations·filing 1989–2008
98Inventor score
Top patents by PatentIndex Score
30 records- 0196US7193957B2Light source drive, optical information recording apparatus, and optical information recording methodRICOH KK·Filed 2005·Granted Mar 20, 2007·24 cites·5 claims
- 0296US6498617B1Pulse width modulation circuit, optical write unit, image forming apparatus and optical write methodRICOH KK·Filed 2000·Granted Dec 24, 2002·159 cites·26 claims
- 0395US6917639B2Laser driver circuitRICOH KK·Filed 2002·Granted Jul 12, 2005·61 cites·31 claims
- 0495US6731317B2Pulse 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
- 0593US5036519ASemiconductor laser controllerRICOH KK·Filed 1989·Granted Jul 30, 1991·51 cites·64 claims
- 0692US6791596B2Method and apparatus for image forming capable of effectively generating pixel clock pulsesRICOH KK·Filed 2002·Granted Sep 14, 2004·84 cites·101 claims
- 0791US5946334ASemiconductor laser control systemRICOH KK·Filed 1997·Granted Aug 31, 1999·85 cites·106 claims
- 0888US7791634B2Pixel clock generator, pulse modulator, and image forming apparatusRICOH KK·Filed 2006·Granted Sep 7, 2010·12 cites·9 claims
- 0988US7518969B2Light source driving unit and optical storage apparatusRICOH KK·Filed 2006·Granted Apr 14, 2009·6 cites·33 claims
- 1088US7200091B2Light source driving unit and optical storage apparatusRICOH KK·Filed 2002·Granted Apr 3, 2007·18 cites·6 claims
- 1188US5784091AImage forming system using digital ASIC and analog ASIC for processing image data and controlling semiconductor laser, and half-tone pixel representing methodRICOH KK·Filed 1997·Granted Jul 21, 1998·107 cites·26 claims
- 1287US6118798ASemiconductor laser control systemRICOH KK·Filed 1999·Granted Sep 12, 2000·63 cites·11 claims
- 1384US5138623ASemiconductor laser control deviceRICOH KK·Filed 1991·Granted Aug 11, 1992·48 cites·17 claims
- 1481US7746971B2Data recovery method, data recovery circuit, data transmitting/receiving apparatus and information processing apparatusRICOH KK·Filed 2006·Granted Jun 29, 2010·10 cites·24 claims
- 1581US5237579ASemiconductor laser controller using optical-electronic negative feedback loopRICOH KK·Filed 1992·Granted Aug 17, 1993·44 cites·23 claims
- 1680US7684531B2Data recovery method and data recovery circuitRICOH KK·Filed 2004·Granted Mar 23, 2010·29 cites·9 claims
- 1780US7423940B2Signal processing method and signal processing apparatusRICOH KK·Filed 2006·Granted Sep 9, 2008·3 cites·23 claims
- 1880US7142486B2Signal processing method and signal processing apparatusRICOH KK·Filed 2002·Granted Nov 28, 2006·12 cites·26 claims
- 1980US7050080B2Image forming apparatus for controlling image writing by adjusting image clockRICOH KK·Filed 2001·Granted May 23, 2006·19 cites·44 claims
- 2080US6954415B2Light source drive, optical information recording apparatus, and optical information recording methodRICOH KK·Filed 2003·Granted Oct 11, 2005·10 cites·32 claims
- 2179US5258780ABeam recorder forming low density dotsRICOH KK·Filed 1991·Granted Nov 2, 1993·50 cites·17 claims
- 2276US8023605B2Oversampling circuit and oversampling methodRICOH CO LTD·Filed 2007·Granted Sep 20, 2011·7 cites·3 claims
- 2371US6442183B1Semiconductor laser drive control circuit and image forming system using the sameRICOH KK·Filed 2000·Granted Aug 27, 2002·10 cites·12 claims
- 2466US5050177ALaser diode driving circuitRICOH KK·Filed 1990·Granted Sep 17, 1991·22 cites·7 claims
- 2561US8194780B2Differential signal output deviceTSUKAMOTO NOBUNARI·Filed 2008·Granted Jun 5, 2012·2 cites·13 claims
- 2660US7573790B2Light source driving unit and optical storage apparatusRICOH KK·Filed 2006·Granted Aug 11, 2009·0 cites·5 claims
- 2760US7480230B2Light source drive, optical information recording apparatus, and optical information recording methodRICOH KK·Filed 2006·Granted Jan 20, 2009·0 cites·2 claims
- 2856US6590599B2Apparatus and method for equivalently changing a write clock frequencyRICOH KK·Filed 2001·Granted Jul 8, 2003·2 cites·18 claims
- 2956US5325160AHalf tone recording method and light source device for writingRICOH KK·Filed 1992·Granted Jun 28, 1994·16 cites·3 claims
- 3044US8243865B2Data processing apparatusTSUKAMOTO NOBUNARI·Filed 2007·Granted Aug 14, 2012·1 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →