Inventor · disambiguated record
Toshiki Udagawa
Also filed as: UDAGAWA TOSHIKI
14 granted patents·325 citations·filing 1990–2019
94Inventor score
Files withSONY CORP14
Top patents by PatentIndex Score
14 records- 0189US5335213APositional detection of a magneto-optic recording medium for controlling irradiation of a relief regionSONY CORP·Filed 1991·Granted Aug 2, 1994·50 cites·14 claims
- 0288US5329512ATemperature detection of a magneto-optic recording medium for controlling irradiation of an erasure regionSONY CORP·Filed 1991·Granted Jul 12, 1994·55 cites·9 claims
- 0387US5579294AMagneto-optical medium and recording and/or reproducing apparatus thereofSONY CORP·Filed 1994·Granted Nov 26, 1996·42 cites·14 claims
- 0483US5367509AMethod for reproducing information recorded on a magneto-optical recording medium including servo controlling the dimension of the reproduction region of the recording medium by means of a recorded signalSONY CORP·Filed 1994·Granted Nov 22, 1994·35 cites·6 claims
- 0580US7113468B2Optical recorder and laser power control methodSONY CORP·Filed 2002·Granted Sep 26, 2006·15 cites·17 claims
- 0679US5390162AMethod for reproducing signals recorded on optical recording mediumSONY CORP·Filed 1991·Granted Feb 14, 1995·29 cites·14 claims
- 0774US6967914B2Optical recorder and laser power control methodSONY CORP·Filed 2002·Granted Nov 22, 2005·15 cites·14 claims
- 0871US5513167AOptical recording apparatusSONY CORP·Filed 1994·Granted Apr 30, 1996·20 cites·4 claims
- 0970US5432774AOptical recording mediumSONY CORP·Filed 1991·Granted Jul 11, 1995·19 cites·3 claims
- 1070US5208799AMagneto-optic recording method and magneto-optic recording/reproducing apparatusSONY CORP·Filed 1992·Granted May 4, 1993·18 cites·10 claims
- 1160US5371722AMethod for recording sector control information on magneto-optical diskSONY CORP·Filed 1993·Granted Dec 6, 1994·12 cites·13 claims
- 1258US5168487AOptical recording and/or reproducing apparatusSONY CORP·Filed 1990·Granted Dec 1, 1992·11 cites·8 claims
- 1352US11962126B2Overcurrent determination circuit and light emission control apparatusSONY CORP·Filed 2019·Granted Apr 16, 2024·0 cites·13 claims
- 1433US5380573AOptical recording mediumSONY CORP·Filed 1991·Granted Jan 10, 1995·4 cites·2 claims
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