Inventor · disambiguated record
Akihiko Doi
Also filed as: DOI AKIHIKO
20 granted patents·3 pending applications·202 citations·filing 1984–2009
94Inventor score
Top patents by PatentIndex Score
23 records- 0190US4755980AOptical disk and recording/reproducing device for optical diskTOSHIBA KK·Filed 1986·Granted Jul 5, 1988·42 cites·8 claims
- 0276US5063548AInformation processing apparatusTOSHIBA KK·Filed 1989·Granted Nov 5, 1991·21 cites·3 claims
- 0375US4764912AOptical focusing in magneto-optic disk systemTOSHIBA KK·Filed 1986·Granted Aug 16, 1988·20 cites·15 claims
- 0475US4641023AOptical headTOSHIBA KK·Filed 1984·Granted Feb 3, 1987·17 cites·22 claims
- 0574US7911911B2Optical disk device and control methodTOSHIBA KK·Filed 2009·Granted Mar 22, 2011·2 cites·9 claims
- 0673US8009546B2Over current protection deviceTEXAS INSTRUMENTS INC·Filed 2009·Granted Aug 30, 2011·2 cites·17 claims
- 0772US5161144ASystem for recording information on an optical recording mediumTOSHIBA KK·Filed 1990·Granted Nov 3, 1992·22 cites·9 claims
- 0870US4684797AOptical system and method for reducing vibration of an objective lens in an optical head assembly of an optical read/write systemTOSHIBA KK·Filed 1985·Granted Aug 4, 1987·17 cites·22 claims
- 0968US4900910ASystem for detecting the position of an objective lensTOSHIBA KK·Filed 1988·Granted Feb 13, 1990·16 cites·14 claims
- 1059US8068393B2Optical disc apparatus including a divided photodetectorDOI AKIHIKO·Filed 2009·Granted Nov 29, 2011·0 cites·3 claims
- 1158US5101396AInformation recording system capable of preventing overwritingTOSHIBA KK·Filed 1990·Granted Mar 31, 1992·12 cites·12 claims
- 1257US8000200B2HFM enable control systemTEXAS INSTRUMENTS INC·Filed 2009·Granted Aug 16, 2011·0 cites·14 claims
- 1356US8437232B2High frequency modulatorDOI AKIHIKO·Filed 2009·Granted May 7, 2013·0 cites·14 claims
- 1456US7706217B2Optical disc apparatusTOSHIBA SAMSUNG STORAGE TECH·Filed 2006·Granted Apr 27, 2010·0 cites·3 claims
- 1555US5406536AOptical disc apparatus having improved read accuracy with non-linear servo signal gain during track access and focus initializationTOSHIBA KK·Filed 1993·Granted Apr 11, 1995·10 cites·9 claims
- 1654US8134897B2Current gain control systemDOI AKIHIKO·Filed 2009·Granted Mar 13, 2012·0 cites·20 claims
- 1752US2009003152A1Optical disc apparatus, controller of optical disc apparatus, and control method of optical disc apparatusTOSHIBA KK·Filed 2008·Application pending·0 cites
- 1851US5901125ARecording and reproducing optical disk device with multi-disk type capabilityTOSHIBA KK·Filed 1997·Granted May 4, 1999·10 cites·4 claims
- 1950US2009245056A1Optical disk device and control methodTOSHIBA KK·Filed 2009·Application pending·0 cites
- 2043US2007177355A1Heat sink, electronic device, and tuner apparatusSHARP KK·Filed 2006·Application pending·0 cites
- 2141US6714500B2Optical disc drive and signal processing methodTOSHIBA KK·Filed 2002·Granted Mar 30, 2004·0 cites·5 claims
- 2240US5309425ASignal processing circuit for optical disk apparatusTOSHIBA KK·Filed 1992·Granted May 3, 1994·4 cites·2 claims
- 2337US5306903AObjective lens position detecting system capable of adjusting amounts of radiationTOSHIBA KK·Filed 1992·Granted Apr 26, 1994·7 cites·7 claims
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