LexDanaLexDanabeta
Inventor

Tsuyoshi Toda

Inventor
Kodaira, JP

Overview

59→
Patents
1989–2017
Patent span
Physics
Primary field (CPC G)

Patents· 59 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer92%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein2%
G06FElectric digital data processing2%
G06TImage data processing or generation, in general2%
G09GArrangements or circuits for control of indicating devices using static means to present variable information2%
G11CStatic stores2%
PatentTitleYear
9,785,333'Display device, image processing apparatus, non-transitory computer readable medium, and display control method'20178,289,827'Recording medium, optical disk apparatus and writing method'20128,228,771'Optical disc recording apparatus and optical disc recording method'20128,159,913'Optical disc recording apparatus and recording power control method'20128,144,559'Multiple pulse recording method with 3-valued power levels'20128,004,941'Optical disk apparatus and test writing method'20117,995,430'Optical disk device and control method for the same'20117,911,910'Information recording method and apparatus with suppressed mark edge jitters'20117,907,490'Information recording method and apparatus with suppressed mark edge jitters'20117,907,491'Information recording method and apparatus with suppressed mark edge jitters'20117,852,727'Information recording method and apparatus with suppressed mark edge jitters'20107,843,776'Optical disk recording/reproducing apparatus and seek control method thereof'20107,746,740'Recording control method for optical disk recording apparatus and optical disk recording apparatus'20107,684,301'Information recording method and apparatus with suppressed mark edge jitters'20107,684,298'Optical information recording method and optical information recording apparatus'20107,616,533'Optical disc apparatus and access control method of the same'20097,567,490'Optical disk recording method and an optical disk apparatus'20097,417,933'Information recording method and apparatus with suppressed mark edge jitters'20087,391,695'Information recording systems and methods utilizing controlled mark-length'20087,304,931'Recording medium, optical disk apparatus and writing method'20077,274,643'Information recording and reproducing apparatus and information recording medium'20077,227,818'Magneto-optical data recording/reproducing method'20077,170,838'Information recording and reproducing apparatus'20077,170,840'Information recording method'20077,130,256'Mark-length information recording system'20067,057,996'Information recording method, information recording medium, and information recording apparatus'20067,042,823'Information recording method and apparatus with suppressed mark edge jitters'20067,012,871'Information recording method and apparatus with suppressed mark edge jitters'20066,909,682'Information recording method, information recording medium, and information recording apparatus'20056,842,415'Information recording method and apparatus with suppressed mark edge jitters'20056,680,888'Information recording/reproducing apparatus and method and information recording medium'20046,671,239'Information recording/reproducing apparatus and method and information recording medium'20036,650,607'Information recording method, information recording medium, and information recording apparatus'20036,608,806'Information recording method and apparatus with suppressed mark edge jitters'20036,529,467'Information recording method and apparatus with suppressed mark edge jitters'20036,463,020'Arrangements for using detected phase differences for setting laser power levels'20026,445,659'Information recording/reproducing apparatus and method and information recording medium'20026,343,056'Information recording method and apparatus with suppressed mark edge jitters'20026,304,533'Information recording/reproducing apparatus and method and information recording medium'20016,272,100'Information recording/reproducing apparatus and method and information recording medium'20016,269,062'Arrangements for using detected phase differences for setting laser power levels'20016,246,661'Optical disk recording and retrieving device'20016,236,635'Information recording method and apparatus with suppressed mark edge jitters'20016,125,093'Optical disk recording and retrieving device'20005,974,021'Determination of optimal recording power in optical disk recording and retrieving device'19995,848,045'Method for recording and reading an optical disk'19985,828,636'Optical disk apparatus having optimized focus shift mechanism control'19985,793,736'Optical information recording and reproducing control apparatus and control method of the same'19985,732,061'Recording method using trial write test pattern'19985,703,855'Optical disk apparatus and recording and reading method for an optical disk using the same'19975,642,343'Magnetooptic disc apparatus and recording medium'19975,590,111'Method of controlling recording of optical records'19965,463,600'Magneto-optical recording system using recording waveform having a plurality of power levels providing high recording density'19955,457,666'Light modulation method for forming a mark in magneto-optical recording system'19955,450,390'Method and apparatus for writing and reading information and storage medium used for the same'19955,333,126'Information recording method and optical disk apparatus using same'19945,268,912'Harmonic light source capable of being optically modulated and optical information processing apparatus employing the same'19935,263,015'Magneto-optical recording media and overwrite recording method using the same'19934,873,678'Optical head and optical information processor using the same'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–2012Patents assigned to HITACHI LTD (55)· patent assignee history
1989–2012Based in Kodaira, JP· patent location history
2007–2012Patents assigned to HITACHI LG DATA STORAGE INC (13)· patent assignee history
2008Based in Kadaira, JP· patent location history
2008Based in Tokyo, JP· patent location history
2012Patents assigned to TODA TSUYOSHI (4)· patent assignee history
2012Patents assigned to MINEMURA HIROYUKI (2)· patent assignee history
2012Patents assigned to NISHIMURA KOICHIRO (2)· patent assignee history
2017Based in Kanagawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD551989–2012
HITACHI LG DATA STORAGE INC132007–2012
TODA TSUYOSHIself42012
MINEMURA HIROYUKI22012
NISHIMURA KOICHIRO22012
Locations
LocationPatentsSpan
Kodaira, JP561989–2012
Kanagawa, JP12017
Kadaira, JP12008
Tokyo, JP12008