Inventor
TSUDA HIROYUKI
JP35 patents
⚠️ This page may combine multiple inventors who share the name “TSUDA HIROYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SANYO ELECTRIC CO
8 patentsUS6799242B1Sep 28, 2004
Optical disc player with sleep mode
SANYO ELECTRIC CO18 citations92
US6697915B2Feb 24, 2004
CD-ROM decoder
SANYO ELECTRIC CO7 citations74
US6630744B2Oct 7, 2003
Multichip module
SANYO ELECTRIC CO10 citations74
US6345374B1Feb 5, 2002
Code error correcting apparatus
SANYO ELECTRIC CO9 citations74
US7047353B2May 16, 2006
Optical disc player with sleep mode
SANYO ELECTRIC CO8 citations73
US6745349B1Jun 1, 2004
CD-ROM decoder and method for temporarily storing and retrieving digital data
SANYO ELECTRIC CO4 citations63
US6675343B1Jan 6, 2004
Code error correcting and detecting apparatus
SANYO ELECTRIC CO3 citations63
US7024513B2Apr 4, 2006
Controller and data processing system
SANYO ELECTRIC CO0 citations52
NIPPON TELEGRAPH & TELEPHONE
4 patentsUS5321539AJun 14, 1994
Liquid crystal Fabry-Perot etalon with glass spacer
NIPPON TELEGRAPH & TELEPHONE145 citations98
US6122419ASep 19, 2000
Optical signal processing apparatus and optical signal processing method
NIPPON TELEGRAPH & TELEPHONE97 citations97
US5076672ADec 31, 1991
All-optical switch apparatus using a nonlinear etalon
NIPPON TELEGRAPH & TELEPHONE66 citations95
US6456760B1Sep 24, 2002
Optical signal processing apparatus and optical signal processing method
NIPPON TELEGRAPH & TELEPHONE24 citations92
UNIV KEIO
4 patentsUS7860358B2Dec 28, 2010
Multimode interference waveguide type optical switch
UNIV KEIO15 citations77
US7756376B2Jul 13, 2010
Optical functional waveguide, optical modulator, arrayed waveguide grating, and dispersion compensation circuit
UNIV KEIO2 citations63
US7496256B2Feb 24, 2009
Diffraction grating and dispersion compensation circuit
UNIV KEIO3 citations63
US7269305B2Sep 11, 2007
Optical switch
UNIV KEIO5 citations60
NEGAMI YUICHI
3 patentsUS8396429B2Mar 12, 2013
Communication test device and communication test method
NEGAMI YUICHI2 citations57
US8311486B2Nov 13, 2012
Communication test device and communication test method
NEGAMI YUICHI2 citations57
US8498581B2Jul 30, 2013
Communication test device and communication test method
NEGAMI YUICHI0 citations46