P

Inventor

TANAKA SHIGEYOSHI

JP40 patents
⚠️ This page may combine multiple inventors who share the name “TANAKA SHIGEYOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

FUJITSU LTD

16 patents
US5077719ADec 31, 1991

Optical disk access system

FUJITSU LTD60 citations95
US4985882AJan 15, 1991

Track access control system for disk system, having eccentricity correction means

FUJITSU LTD28 citations93
US5631891AMay 20, 1997

Disk reproducing circuit with automatic gain control

FUJITSU LTD38 citations92
US5276671AJan 4, 1994

Control apparatus of laser diode

FUJITSU LTD27 citations92
US5084661AJan 28, 1992

Position control system for information storage system

FUJITSU LTD37 citations92
US6295569B1Sep 25, 2001

Storage apparatus

FUJITSU LTD28 citations91
US6983383B1Jan 3, 2006

Method for providing priority to an ac adaptor if the input to the ac adaptor is above a predetermined value even if the power supply via an interface is present

FUJITSU LTD13 citations83
US6522606B1Feb 18, 2003

Optical pickup servo control apparatus with stored compensatory values

FUJITSU LTD7 citations74
US6014349AJan 11, 2000

Storage apparatus using variable read clock frequencies for reading ZCAV recording medium

FUJITSU LTD10 citations74
US4977551ADec 11, 1990

Optical disk tracking control system and method having normalized tracking error control signal

FUJITSU LTD16 citations74
US5812503ASep 22, 1998

Positioning control system having an optical beam and a servo-error signal generating circuit for accurately irradiating a desired position

FUJITSU LTD5 citations72
US5636191AJun 3, 1997

Positioning control system utilizing optical beam having servo-error signal generating circuit

FUJITSU LTD5 citations72
US5966353AOct 12, 1999

Optical storage device made thinner by substituting electrical means for capabilities of sensors

FUJITSU LTD3 citations62
US5566143AOct 15, 1996

Positioning control system utilizing optical beam

FUJITSU LTD3 citations61
US5930212AJul 27, 1999

Positioning control system including a servo-error signal generating circuit

FUJITSU LTD0 citations51
US5909415AJun 1, 1999

Positioning control system which generates a servo-error signal in accordance with a difference between detection currents

FUJITSU LTD0 citations51

KAO CORP

12 patents

HITACHI CHEMICAL CO LTD

9 patents

WATANABE IND

3 patents