P

Inventor

MATSUMOTO KIYOSHI

JP68 patents
⚠️ This page may combine multiple inventors who share the name “MATSUMOTO KIYOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HITACHI LTD

17 patents
US5377178ADec 27, 1994

Data recording/reproducing method and apparatus using a recording medium having clock marks recorded in a wobbled track for read/write synchronization

HITACHI LTD198 citations99
US5796428AAug 18, 1998

Electronic photography system

HITACHI LTD243 citations98
US5414451AMay 9, 1995

Three-dimensional recording and reproducing apparatus

HITACHI LTD141 citations98
US6590608B2Jul 8, 2003

Method and apparatus for managing a plurality of images by classifying them into groups

HITACHI LTD80 citations97
US7286153B1Oct 23, 2007

Three-dimensional recording and reproducing apparatus

HITACHI LTD45 citations96
US5614938AMar 25, 1997

Three-dimensional recording and reproducing apparatus

HITACHI LTD91 citations96
US6229566B1May 8, 2001

Electronic photography system

HITACHI LTD73 citations95
US5828636AOct 27, 1998

Optical disk apparatus having optimized focus shift mechanism control

HITACHI LTD34 citations93
US5737301AApr 7, 1998

Laser control for setting average recording power of "1" equal to average recording power of "0"

HITACHI LTD30 citations93
US5511050AApr 23, 1996

Focus error detecting method and optical head using the same

HITACHI LTD21 citations92
US5396477AMar 7, 1995

Light spot positioning method and optical disc memory apparatus employing the same

HITACHI LTD24 citations92
US5235591AAug 10, 1993

Stack type optical disc apparatus, sealed and separate type optical head therefor and optical disc medium

HITACHI LTD27 citations92
US5339319AAug 16, 1994

Rotary type storage apparatus and control method thereof

HITACHI LTD20 citations89
US6130797AOct 10, 2000

Magnetic recorder and magnetooptical recorder

HITACHI LTD16 citations84
US5648949AJul 15, 1997

Method and apparatus for information reproduction at variable reference level

HITACHI LTD12 citations74
US5448544ASep 5, 1995

Data recording/playback apparatus and signal processing method

HITACHI LTD13 citations74
US5034941AJul 23, 1991

Optical disk apparatus having auto-focusing servo systems for multiple light spots and method of starting the auto-focusing servo systems

HITACHI LTD7 citations74

ASAHI GLASS CO LTD

7 patents

UNIV TOKYO

6 patents

SANYO ELECTRIC CO

3 patents

BRISTOL MYERS CO

3 patents

SEIKO INSTR INC

2 patents

AISIN SEIKI

1 patent

MATSUMOTO KIYOSHI

1 patent

TAIRA TETSUYA

1 patent

KASHIHARA HIROYUKI

1 patent

NIKKA KK

1 patent

SUMITOMO HEAVY INDUSTRIES

1 patent

JAPAN STEEL WORKS LTD

1 patent

KAO CORP

1 patent

DAINIPPON SCREEN MFG

1 patent

SHIMOYAMA ISAO

1 patent

KAWASAKI HEAVY IND LTD

1 patent

MITSUBISHI ELECTRIC CORP

1 patent

Showing the top 50 of 68 patents by PatentIndex Score.