Inventor · disambiguated record
Masakazu Ogasawara
Also filed as: OGASAWARA MASAKAZU
58 granted patents·30 pending applications·808 citations·filing 1996–2023
99Inventor score
Top patents by PatentIndex Score
88 records- 0196US7307769B2Hologram recording medium, recording/reproducing method and recording/reproducing apparatusPIONEER CORP·Filed 2005·Granted Dec 11, 2007·24 cites·15 claims
- 0296US6172957B1Optical pickup and multi-layer disc playback apparatusPIONEER ELECTRONIC CORP·Filed 1998·Granted Jan 9, 2001·110 cites·12 claims
- 0392US6125088AAberration correcting apparatus and information recording medium play-back apparatusPIONEER ELECTRONIC CORP·Filed 1998·Granted Sep 26, 2000·63 cites·24 claims
- 0492US6078554AWave-front aberration compensation unit, wave-front aberration compensation device, and optical pickupPIONEER ELECTRONIC CORP·Filed 1997·Granted Jun 20, 2000·77 cites·16 claims
- 0590US7031038B2Hologram apparatus capable of detecting and correcting distortion of hologram imagePIONEER CORP·Filed 2005·Granted Apr 18, 2006·11 cites·14 claims
- 0690US6690500B2Aberration correction apparatus and methodPIONEER CORP·Filed 2001·Granted Feb 10, 2004·43 cites·20 claims
- 0788US7453787B2Optical pickupPIONEER CORP·Filed 2005·Granted Nov 18, 2008·8 cites·13 claims
- 0886US6882482B2Liquid-crystal lens and method and apparatus for driving the samePIONEER CORP·Filed 2003·Granted Apr 19, 2005·29 cites·9 claims
- 0985US8018814B2Aberration correction device, aberration correction method and optical pickupPIONEER CORP·Filed 2005·Granted Sep 13, 2011·10 cites·4 claims
- 1085US7542397B2Aberration correction apparatus, and control apparatus, control method and control program of optical pickupPIONEER CORP·Filed 2005·Granted Jun 2, 2009·8 cites·10 claims
- 1185US7170661B2Hologram recording medium and recording and reproducing systemPIONEER CORP·Filed 2004·Granted Jan 30, 2007·18 cites·13 claims
- 1285US6859429B2Aberration correcting unit, optical pickup apparatus, and recording/reproducing apparatusPIONEER CORP·Filed 2001·Granted Feb 22, 2005·19 cites·31 claims
- 1385US6141304AOptical pickupPIONEER ELECTRONIC CORP·Filed 1998·Granted Oct 31, 2000·41 cites·8 claims
- 1483US7016269B2Optical pickup apparatus and focusing control methodPIONEER CORP·Filed 2001·Granted Mar 21, 2006·17 cites·21 claims
- 1583US6967908B2Optical pickup device with focus error detecting optical element and method for focus error detectionPIONEER CORP·Filed 2001·Granted Nov 22, 2005·17 cites·20 claims
- 1682US8111604B2Fabrication method of multilayer optical record medium and recording apparatus for multilayered optical record mediumNAKANO MASAHARU·Filed 2007·Granted Feb 7, 2012·9 cites·8 claims
- 1782US6909686B2Aberration correcting optical unit, optical pickup apparatus and information recording/reproducing apparatus with single and multi-layer electrodesPIONEER CORP·Filed 2000·Granted Jun 21, 2005·14 cites·8 claims
- 1880US8238220B2Pickup deviceSATO MAKOTO·Filed 2006·Granted Aug 7, 2012·4 cites·5 claims
- 1980US7012722B2Holographic recording apparatusPIONEER CORP·Filed 2004·Granted Mar 14, 2006·13 cites·9 claims
- 2080US6151154AOptical pickup, aberration correction unit and astigmatism measurement methodPIONEER ELECTRONIC CORP·Filed 1999·Granted Nov 21, 2000·61 cites·28 claims
- 2179US7116612B2Optical pickup device driven by an error signal obtained from an optical detector's output signalsPIONEER CORP·Filed 2002·Granted Oct 3, 2006·13 cites·20 claims
- 2279US6628589B2Optical reproducing aberration compensation system having appropriate correction signals applied to a liquid crystal detectorPIONEER CORP·Filed 2001·Granted Sep 30, 2003·13 cites·9 claims
- 2378US10840601B2Horn antenna arrayPIONEER CORP·Filed 2016·Granted Nov 17, 2020·3 cites·7 claims
- 2478US6594221B2Optical pickup devicePIONEER CORP·Filed 2001·Granted Jul 15, 2003·12 cites·12 claims
- 2577US12038304B2Optical devicePIONEER CORP·Filed 2023·Granted Jul 16, 2024·0 cites·5 claims
- 2677US10801954B2Inspection apparatus, inspection method, computer program and recording mediumPIONEER CORP·Filed 2017·Granted Oct 13, 2020·1 cites·6 claims
- 2777US6218655B1Optical pickupPIONEER ELECTRONIC CORP·Filed 1999·Granted Apr 17, 2001·31 cites·17 claims
- 2876US11650051B2Optical devicePIONEER CORP·Filed 2018·Granted May 16, 2023·2 cites·4 claims
- 2976US11099001B2Inspection apparatus, inspection method, computer program and recording mediumPIONEER CORP·Filed 2017·Granted Aug 24, 2021·2 cites·18 claims
- 3076US8125872B2Recording medium and recording systemOGASAWARA MASAKAZU·Filed 2007·Granted Feb 28, 2012·4 cites·9 claims
- 3176US6678232B2Aberration correcting element and assemblyPIONEER CORP·Filed 2002·Granted Jan 13, 2004·10 cites·6 claims
- 3275US5999503AFocus control apparatus in multi-layered disk reading apparatus utilizing acceleration, deceleration and focus error signals to switch between layers of the diskPIONEER ELECTRONIC CORP·Filed 1996·Granted Dec 7, 1999·28 cites·11 claims
- 3374US7944797B2Recording and reproducing method, recording medium, and recording and reproducing apparatusPIONEER CORP·Filed 2007·Granted May 17, 2011·2 cites·19 claims
- 3474US7499386B2Aberration correction apparatus, and control apparatus, control method and control program of optical pickupPIONEER CORP·Filed 2005·Granted Mar 3, 2009·2 cites·15 claims
- 3574US6370095B1Aberration correcting apparatus and information recording medium play-back apparatusPIONEER ELECTRONIC CORP·Filed 2000·Granted Apr 9, 2002·13 cites·29 claims
- 3673US7206277B2Optical pickup device and focal error detecting device therefor and wave aberration and focal error detecting device thereforPIONEER CORP·Filed 2002·Granted Apr 17, 2007·9 cites·25 claims
- 3768US6124988AObjective lensPIONEER ELECTRONIC CORP·Filed 1998·Granted Sep 26, 2000·20 cites·17 claims
- 3867US7428193B2Optical pickup device and optical recording medium reproducing devicePIONEER CORP·Filed 2004·Granted Sep 23, 2008·6 cites·15 claims
- 3967US7110343B2Spherical aberration correction apparatusPIONEER CORP·Filed 2003·Granted Sep 19, 2006·6 cites·6 claims
- 4065US7859973B2Method for recording and reproducing a hologram and apparatus thereforPIONEER CORP·Filed 2006·Granted Dec 28, 2010·1 cites·40 claims
- 4164US8189252B2Light deflecting device and hologram deviceSATO MAKOTO·Filed 2006·Granted May 29, 2012·1 cites·9 claims
- 4264US7170845B2Aberration correcting apparatusPIONEER CORP·Filed 2002·Granted Jan 30, 2007·5 cites·7 claims
- 4363US7847805B2Display apparatus, display method, program and recording mediumPANASONIC CORP·Filed 2004·Granted Dec 7, 2010·7 cites·21 claims
- 4463US7453791B2Optical recording medium having a plurality of guide tracks transfer regionsPIONEER CORP·Filed 2004·Granted Nov 18, 2008·4 cites·25 claims
- 4561US7643094B2Color image processing apparatus, color image processing method, program and recording mediumPANASONIC CORP·Filed 2004·Granted Jan 5, 2010·6 cites·18 claims
- 4659US7428207B2Aberration correcting device and optical recording medium reproducing apparatusPIONEER CORP·Filed 2004·Granted Sep 23, 2008·3 cites·10 claims
- 4756US6801491B1Focus error detecting apparatus of optical pickup with a light separating and astigmatism generation optical element and detection method thereofPIONEER CORP·Filed 2000·Granted Oct 5, 2004·3 cites·6 claims
- 4854US2005207290A1Aberration correcting optical unit, optical pickup apparatus, and information recording/reproducing apparatusPIONEER CORP·Filed 2005·Application pending·0 cites
- 4953US8004951B2Pickup devicePIONEER CORP·Filed 2007·Granted Aug 23, 2011·0 cites·10 claims
- 5052US7586829B2Multilayer optical recording medium having plurality of reflecting units formed on parts recording layersPIONEER CORP·Filed 2004·Granted Sep 8, 2009·1 cites·17 claims
Showing the top 50 of 88 patent records by PatentIndex Score.
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