Inventor
OGAWA YASUJI
JP29 patents
⚠️ This page may combine multiple inventors who share the name “OGAWA YASUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KABUSHIKIKAISHA WACOM
9 patentsUS6441362B1Aug 27, 2002
Stylus for optical digitizer
KABUSHIKIKAISHA WACOM154 citations99
US6100538AAug 8, 2000
Optical digitizer and display means for providing display of indicated position
KABUSHIKIKAISHA WACOM361 citations99
US5561543AOct 1, 1996
Information input system by attitude detection of manual implement
KABUSHIKIKAISHA WACOM143 citations98
US5644126AJul 1, 1997
Manual implement for inputting incremental information by attitude control
KABUSHIKIKAISHA WACOM91 citations96
US5694203ADec 2, 1997
Distance camera device having light gate for extracting distance information
KABUSHIKIKAISHA WACOM45 citations92
US5640241AJun 17, 1997
Light spot position measuring method of detecting one-dimensional position by two-dimensional sensor
KABUSHIKIKAISHA WACOM43 citations92
US5608528AMar 4, 1997
Optical position detecting method using asynchronous modulation of light source
KABUSHIKIKAISHA WACOM34 citations92
US5642164AJun 24, 1997
Light spot position measuring apparatus having orthogonal cylindrical lenses
KABUSHIKIKAISHA WACOM10 citations74
US5548392AAug 20, 1996
Optical position detector having scale pattern spot-illuminated to increase resolution
KABUSHIKIKAISHA WACOM14 citations74
WACOM CO LTD
6 patentsUS5572251ANov 5, 1996
Optical position detecting unit and optical coordinate input unit
WACOM CO LTD217 citations99
US5565632AOct 15, 1996
Pressure sensitive stylus pen
WACOM CO LTD184 citations99
US5499098AMar 12, 1996
Optical position detecting unit and optical coordinate input unit utilizing a sub-portion of a M-sequence pattern
WACOM CO LTD112 citations98
US5693914ADec 2, 1997
Digitizer and method of detecting positions
WACOM CO LTD66 citations96
US5682019AOct 28, 1997
Position detecting apparatus and position pointing device including elapsed time period build up detector
WACOM CO LTD62 citations96
US5502568AMar 26, 1996
Optical position detecting unit, optical coordinate input unit and optical position detecting method employing a pattern having a sequence of 1's and 0's
WACOM CO LTD217 citations96
XIROKU INC
6 patentsUS7202860B2Apr 10, 2007
Coordinate input device working with at least display screen and desk-top surface as the pointing areas thereof
XIROKU INC84 citations97
US6567078B2May 20, 2003
Handwriting communication system and handwriting input device used therein
XIROKU INC89 citations97
US7800362B1Sep 21, 2010
Pressure distribution detector utilizing electromagnetic coupling
XIROKU INC13 citations84
US7703342B2Apr 27, 2010
Pressure distribution detection device
XIROKU INC11 citations84
US7703341B2Apr 27, 2010
Pressure detecting apparatus utilizing electromagnetic coupling
XIROKU INC4 citations62
US10088946B2Oct 2, 2018
Coordinate detection device having looped drive lines and detection lines
XIROKU INC0 citations41
NEWCOM INC
3 patentsUS6498602B1Dec 24, 2002
Optical digitizer with function to recognize kinds of pointing instruments
NEWCOM INC137 citations96
US7861605B2Jan 4, 2011
Pressure distribution sensor utilizing electromagnetic coupling
NEWCOM INC10 citations83
US8013598B2Sep 6, 2011
Object detecting device for detecting object using electromagnetic induction
NEWCOM INC0 citations40
EIT CO LTD
2 patentsUS7414617B2Aug 19, 2008
Coordinate input device working with at least display screen and desk-top surface as the pointing areas thereof
EIT CO LTD47 citations95
US7477243B2Jan 13, 2009
Apparatus for controlling the shift of virtual space and method and program for controlling same
EIT CO LTD24 citations87