Inventor
TEZUKA KOICHI
JP38 patents
⚠️ This page may combine multiple inventors who share the name “TEZUKA KOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
26 patentsUS5859819AJan 12, 1999
Tracking and focus control system for optical disk apparatus
FUJITSU LTD41 citations92
US5619482AApr 8, 1997
Optical head unit for an optical disk using a diffraction grating
FUJITSU LTD20 citations92
US10627493B2Apr 21, 2020
Apparatus, method for laser distance measurement, and non-transitory computer-readable storage medium
FUJITSU LTD11 citations86
US9046599B2Jun 2, 2015
Object detection apparatus and method
FUJITSU LTD5 citations73
US6567347B1May 20, 2003
Optical head having a plurality of coil elements connected in parallel to each other
FUJITSU LTD6 citations73
US6185166B1Feb 6, 2001
Optical information recording/reproducing apparatus
FUJITSU LTD6 citations73
US5793725AAug 11, 1998
Optical information recording/reproducing apparatus having a composite prism with a plurality of emission surfaces
FUJITSU LTD6 citations73
US5742572AApr 21, 1998
Optical information recording/reproducing apparatus which detects focal error
FUJITSU LTD13 citations73
US5623462AApr 22, 1997
Optical information recording/reproducing apparatus
FUJITSU LTD15 citations73
US10571568B2Feb 25, 2020
Distance measuring device, distance measuring method, and non-transitory computer-readable storage medium
FUJITSU LTD2 citations72
US7127729B2Oct 24, 2006
Magneto-optical head and magneto-optical disk drive
FUJITSU LTD8 citations72
US10705195B2Jul 7, 2020
Distance measuring apparatus and distance measuring method
FUJITSU LTD1 citations62
US7715073B2May 11, 2010
Hologram recorder
FUJITSU LTD3 citations62
US7039926B2May 2, 2006
Optical disk apparatus with fine tracking mechanism
FUJITSU LTD3 citations62
US6339564B2Jan 15, 2002
Optical information recording/reproducing apparatus
FUJITSU LTD5 citations62
US6272079B1Aug 7, 2001
Optical head unit for optical disk apparatus having both focus control and track control function
FUJITSU LTD6 citations61
US11169247B2Nov 9, 2021
Distance measuring apparatus, distance measuring method, and non-transitory computer-readable storage medium for storing distance measuring program
FUJITSU LTD0 citations52
US9207074B2Dec 8, 2015
Distance measurement apparatus, and distance measurement method
FUJITSU LTD1 citations52
US6898157B2May 24, 2005
Optical head having a plurality of coil elements connected in parallel to each other
FUJITSU LTD0 citations52
US7751105B2Jul 6, 2010
Hologram recording apparatus and hologram recording/reproducing method
FUJITSU LTD1 citations51
US5600618AFeb 4, 1997
Optical data recording/reproducing device and integrated head
FUJITSU LTD0 citations51
US10620303B2Apr 14, 2020
Distance measurement device, distance measurement system and distance measurement method
FUJITSU LTD0 citations42
US10444358B2Oct 15, 2019
Distance measuring apparatus, distance measuring method, and table creating method
FUJITSU LTD0 citations42
US7719734B2May 18, 2010
Hologram recording device
FUJITSU LTD0 citations42
US10761194B2Sep 1, 2020
Apparatus, method for distance measurement, and non-transitory computer-readable storage medium
FUJITSU LTD0 citations41
US7545726B2Jun 9, 2009
Optical disc drive
FUJITSU LTD0 citations41
NIPPON KOKAN KK
4 patentsUSRE35607ESep 16, 1997
Distance measuring method and apparatus therefor
NIPPON KOKAN KK53 citations95
US5075863ADec 24, 1991
Distance measuring method and apparatus therefor
NIPPON KOKAN KK93 citations95
US5323114AJun 21, 1994
Method and apparatus for obtaining sectional information of the underground by measuring time differences and strength of electromagnetic signals
NIPPON KOKAN KK27 citations92
US5918662AJul 6, 1999
Method of controlling the operation of continuous casting and apparatus therefor
NIPPON KOKAN KK12 citations71