P

Inventor

SUENAGA HIDEO

JP9 patents
⚠️ This page may combine multiple inventors who share the name “SUENAGA HIDEO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HITACHI LTD

6 patents
US4744069AMay 10, 1988

Optical disc apparatus with access system having object lens control

HITACHI LTD27 citations92
US4532619AJul 30, 1985

Method and apparatus for reducing semiconductor laser optical noise

HITACHI LTD37 citations92
US5963517AOct 5, 1999

Disk reproducing speed control method and a disk reproducing apparatus using the same

HITACHI LTD38 citations91
US4779255AOct 18, 1988

Optical reading/reproducing apparatus

HITACHI LTD7 citations73
US4525823AJun 25, 1985

Optical tracking system

HITACHI LTD13 citations73
US7400568B2Jul 15, 2008

Optical device, optical pickup and optical disk apparatus

HITACHI LTD8 citations71

OKI ELECTRIC IND CO LTD

1 patent
US4772100ASep 20, 1988

Liquid crystal display device having circuit boards extending along segment and column electrode directions

OKI ELECTRIC IND CO LTD88 citations94

HITACHI LG DATA STORAGE INC

1 patent
US10724845B2Jul 28, 2020

Optical module for optical height measurement

HITACHI LG DATA STORAGE INC0 citations41

KAWAMURA TOMOTO

1 patent
US8537651B2Sep 17, 2013

Optical disc device

KAWAMURA TOMOTO0 citations39