Inventor
UMEDA YUICHI
JP16 patents
Patents
16 patentsUS7075316B2Jul 11, 2006
Capacitance detector circuit, capacitance detection method, and fingerprint sensor using the same
ALPS ELECTRIC CO LTD119 citations98
US5627565AMay 6, 1997
Space coordinates detecting device and input apparatus using same
ALPS ELECTRIC CO LTD294 citations98
US7102364B2Sep 5, 2006
Capacitance detecting circuit and detecting method, and fingerprint sensor employing the same
ALPS ELECTRIC CO LTD31 citations92
US7084645B1Aug 1, 2006
Capacitance detecting circuit and method, and fingerprint sensor using the same
ALPS ELECTRIC CO LTD42 citations92
US7078918B2Jul 18, 2006
Capacitance detecting circuit and method, and fingerprint sensor using the same
ALPS ELECTRIC CO LTD53 citations92
US6130662AOct 10, 2000
Optical position detecting device
ALPS ELECTRIC CO LTD19 citations92
US6014129AJan 11, 2000
Coordinate position of moving light source by using separated groups of detectors each group having an iris
ALPS ELECTRIC CO LTD34 citations92
US5963194AOct 5, 1999
Apparatus for inclination detection and input apparatus using this apparatus
ALPS ELECTRIC CO LTD31 citations92
US5949403ASep 7, 1999
Remote coordinate designating device
ALPS ELECTRIC CO LTD24 citations92
US5737107AApr 7, 1998
Information transmitting apparatus
ALPS ELECTRIC CO LTD36 citations92
US7719396B2May 18, 2010
Actuator
ALPS ELECTRIC CO LTD15 citations84
US6028592AFeb 22, 2000
Relative angle detecting device
ALPS ELECTRIC CO LTD9 citations73
US5841154ANov 24, 1998
Light-emitting diode device with reduced scatter
ALPS ELECTRIC CO LTD7 citations72
US5835209ANov 10, 1998
Relative-angle detection apparatus
ALPS ELECTRIC CO LTD6 citations61
US6798499B2Sep 28, 2004
Method of forming optical thin films on substrate at high accuracy and apparatus therefor
ALPS ELECTRIC CO LTD3 citations57
US7583424B2Sep 1, 2009
Hologram information reproducing device
ALPS ELECTRIC CO LTD0 citations38