Inventor · disambiguated record
Masahiro Takasago
Also filed as: TAKASAGO MASAHIRO
19 granted patents·1 pending application·469 citations·filing 1982–2008
95Inventor score
Top patents by PatentIndex Score
20 records- 0197US4866687AOptical disc access method and optical disk storage using coarse and fine actuatorsHITACHI LTD·Filed 1988·Granted Sep 12, 1989·100 cites·12 claims
- 0292US4730290ADefect detecting optical apparatus enabling recording in an alternate sector or trackHITACHI LTD·Filed 1986·Granted Mar 8, 1988·68 cites·10 claims
- 0390US4607358AOptical memory apparatusHITACHI LTD·Filed 1985·Granted Aug 19, 1986·55 cites·23 claims
- 0489US4554652AOptical information processorHITACHI LTD·Filed 1983·Granted Nov 19, 1985·37 cites·7 claims
- 0588US4523089ADriving apparatus for semiconductor laserHITACHI LTD·Filed 1982·Granted Jun 11, 1985·36 cites·4 claims
- 0683US4853915AOptical recording/reproducing method and apparatus for optical disk medium having unique control parametersHITACHI LTD·Filed 1987·Granted Aug 1, 1989·29 cites·18 claims
- 0780US5124967AAutomatic gain control method and apparatus in optical disk systemHITACHI LTD·Filed 1990·Granted Jun 23, 1992·41 cites·13 claims
- 0875US4542491AOptical information disc apparatus with autofocusing servo systemHITACHI LTD·Filed 1982·Granted Sep 17, 1985·19 cites·10 claims
- 0967US5105409AMethod and apparatus for optical recording and reproduction with tracking servo reducing track offsetHITACHI LTD·Filed 1988·Granted Apr 14, 1992·12 cites·11 claims
- 1062US4541083AFor jumping a light spot on a track of a recording mediumHITACHI LTD·Filed 1982·Granted Sep 10, 1985·11 cites·14 claims
- 1160US7869311B2Built-in type optical disc apparatusHITACHI LG DATA STORAGE INC·Filed 2007·Granted Jan 11, 2011·1 cites·3 claims
- 1257US4650332AOptical position detecting apparatus for positioning an actuatorHITACHI LTD·Filed 1985·Granted Mar 17, 1987·13 cites·15 claims
- 1357US4550394ASystem for optically recording informationHITACHI LTD·Filed 1983·Granted Oct 29, 1985·9 cites·8 claims
- 1454US5559768ATracking following apparatus for optical disk deviceHITACHI LTD·Filed 1994·Granted Sep 24, 1996·9 cites·3 claims
- 1552US4726004AOptical information recording and reproducing apparatus with tracking servo systemHITACHI LTD·Filed 1985·Granted Feb 16, 1988·9 cites·24 claims
- 1649US5448543AApparatus for reproducing data from a regenerative signal using a PLH circuit having loop gain controlHITACHI LTD·Filed 1992·Granted Sep 5, 1995·9 cites·17 claims
- 1749US2009040900A1Pasting method of non-insulation sheet upon printed circuit board, as well as, printed circuit board and optical disk apparatusTAKASAGO MASAHIRO·Filed 2008·Application pending·0 cites
- 1848US5285435AControlling positioning of recording/reproducing head by combining a position differentiation and a drive current integrationHITACHI LTD·Filed 1992·Granted Feb 8, 1994·7 cites·10 claims
- 1945USRE39013EMethod and apparatus for optical recording and reproducing with tracking servo reducing track offsetHITACHI LTD·Filed 2003·Granted Mar 14, 2006·0 cites·11 claims
- 2041US4563760AMethod of detecting light spot control signalHITACHI LTD·Filed 1982·Granted Jan 7, 1986·4 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →