P

Inventor

ITO KENICHI

JP116 patents
⚠️ This page may combine multiple inventors who share the name “ITO KENICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

OLYMPUS OPTICAL CO

14 patents
US5742568AApr 21, 1998

Tracking controller and seek controller for optical recording device

OLYMPUS OPTICAL CO20 citations93
US5090001AFeb 18, 1992

Information recording/reproducing apparatus

OLYMPUS OPTICAL CO33 citations92
US4544838AOct 1, 1985

Method and apparatus for detecting tracking error

OLYMPUS OPTICAL CO39 citations92
US4425636AJan 10, 1984

Method and apparatus for reproducing optically an information recorded on a record medium along tracks

OLYMPUS OPTICAL CO39 citations92
US4423495ADec 27, 1983

Method and apparatus for recording optically an information signal on a record medium along tracks

OLYMPUS OPTICAL CO35 citations92
US4422168ADec 20, 1983

Method and apparatus for detecting a focussing condition of an objective lens

OLYMPUS OPTICAL CO31 citations92
US4455085AJun 19, 1984

Method and apparatus for detecting a focussing condition of an objective lens

OLYMPUS OPTICAL CO21 citations82
US5172353ADec 15, 1992

Track seeking control apparatus for use in data recording/reproduction systems having data tracks thereon

OLYMPUS OPTICAL CO7 citations74
US5022021AJun 4, 1991

Apparatus for detecting moving direction of light beam spot illuminated on optical information recording medium having tracks

OLYMPUS OPTICAL CO16 citations74
US4726685AFeb 23, 1988

Optical measuring device for detecting surface characteristics of object

OLYMPUS OPTICAL CO18 citations74
US4525825AJun 25, 1985

Method and apparatus for detecting focussing and tracking error signals

OLYMPUS OPTICAL CO14 citations73
US4509830AApr 9, 1985

Light beam separation method

OLYMPUS OPTICAL CO7 citations73
US4505584AMar 19, 1985

Method and apparatus for detecting focussing error signal of objective lens

OLYMPUS OPTICAL CO18 citations73
US4453239AJun 5, 1984

Method and apparatus for controlling the focusing and tracking of a light beam using a main and secondary light beam in association with multiple detectors

OLYMPUS OPTICAL CO20 citations73

TOSHIBA KK

6 patents

INAX CORP

4 patents

HITACHI LTD

3 patents

FANUC LTD

3 patents

MURATA MANUFACTURING CO

2 patents

NIPPON NUCLEAR FUEL DEV

2 patents

HIDAN CO

2 patents

SHINETSU CHEMICAL CO

2 patents

NIPPON THOMPSON CO LTD

2 patents

SANYO ELECTRIC CO

1 patent

HEWLETT PACKARD CO

1 patent

FUJITSU LTD

1 patent

KYOSAN DENKI KK

1 patent

NIPPON ZEON CO

1 patent

JAPAN SCIENCE & TECH CORP

1 patent

NIITAKA KAGAKU CHEMICAL INDUST

1 patent

SHIRAI YASUHIRO

1 patent

DAINIPPON PRINTING CO LTD

1 patent

TAKAGI KOGYO KK

1 patent

Showing the top 50 of 116 patents by PatentIndex Score.