Inventor
Hiroshi Itagaki
Inventor
Yokohama, JP
Overview
Patents· 107 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G06Fprimary
G06FElectric digital data processing43%
G11BInformation storage based on relative movement between record carrier and transducer38%
H04NPictorial communication, e.g. television6%
C08LCompositions of macromolecular compounds2%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients2%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes2%
H04LTransmission of digital information, e.g. telegraphic communication1%
Y10TTechnical subjects covered by former us classification1%
C09KMaterials for miscellaneous applications, not provided for elsewhere1%
G03GElectrography1%
PatentTitleYear
11,132,332Method to write data ahead to snapshot area to avoid copy-on-write202111,042,329Reordering a sequence of files based on compression rates in data transfer202111,037,598Detecting damaged areas on magnetic tape based on measuring a number of servo errors202111,031,041Detecting damaged areas on magnetic tape based on measuring a number of servo errors202111,016,675Optimizing timing for data migration from old generation tapes to new generation tapes202111,010,104Optimized tape drive unmounting202110,915,244Reading and writing via file system for tape recording system202110,902,872Managing index writes to a tape medium202110,897,593Multiple tape video data splitter202110,831,624Synchronizing data writes202010,817,207Management of a multi-library storage system202010,734,021High speed file copy from tape using block grouping202010,732,843Tape drive data reclamation202010,726,870Timing index writes to a tape medium202010,698,828Copying fragmented files between sequential storage mediums202010,671,294Recalling files stored on a tape202010,649,697Technique for providing information on time to read a file202010,642,784Reducing read operations and branches in file system policy checks202010,620,865Writing files to multiple tapes202010,614,851Verification of data on tape storage system202010,579,294Management of object location in hierarchical storage202010,545,698Copy from source medium to target medium202010,541,004Shortening the average reposition time to the beginning of files in a magnetic tape202010,528,271Managing read/write compatibility between storage devices and storage media202010,497,394Detecting damaged areas on magnetic tape based on measuring number of servo errors201910,452,305Tape drive data reclamation201910,453,485Increasing data storage capacity by reducing index entries201910,417,100File system for rolling back data on tape201910,366,052Identifying partial update for tape file system201910,346,078Method of writing a file to a plurality of media and a storage system thereof201910,331,348Reading and writing via file system for tape recording system201910,248,335Reducing a size of backup data in storage201910,248,352Management of object location in hierarchical storage201910,242,709Detecting damaged areas on magnetic tape based on measuring a number of servo errors201910,241,703Multivolume group management201910,242,707Timing index writes to a tape medium201910,229,718Shortening the average reposition time to the beginning of files in a magnetic tape201910,222,994Storing selected data in a stub file in a hierarchical storage management system201910,168,920Duplexing file system data201910,162,527Scalable and efficient access to and management of data and resources in a tiered data storage system201810,152,993Save block data to tape in a reverse order201810,133,487Provision of information about fragmentation of file on sequential access medium201810,120,612Apparatus, method, and program product for tape copying201810,089,481Securing recorded data201810,073,631Recalling files stored on a tape201810,073,632Recalling files stored on a tape201810,067,943Reducing read operations and branches in file system policy checks201810,067,700Storing meta-information on tape recording systems201810,025,792Method for divisionally managing files on a user basis, and a storage system and computer program product thereof201810,025,507Method of writing file onto tape20189,940,338Efficiency of file synchronization in a linear tape file system20189,910,617'Data updating in a file system'20189,910,624'Data writing in a file system'20189,886,355'File system for rolling back data on tape'20189,858,158'File system for rolling back data on tape'20189,857,985'Provision of information about fragmentation of file on sequential access medium'20189,852,756Method of managing, writing, and reading file on tape20179,830,085Recalling files stored on a tape20179,830,102Method of writing a file to a plurality of media and a storage system thereof20179,772,775'Scalable and efficient access to and management of data and resources in a tiered data storage system'20179,721,610'Method of managing, writing, and reading file on tape'20179,671,979'Data writing in a file system'20179,632,721'Data writing in a file system'20179,600,493'Copy from source medium to target medium'20179,477,430'Adapting transfer rate of cached data to prevent stoppage of data transmission'20169,459,814'Data writing in a file system'20169,383,945'Method of writing a file to a plurality of media and a storage system thereof'20169,372,868'Efficiency of file synchronization in a linear tape file system'20169,343,106'Performing process for removal medium'20169,292,227'Method for divisionally managing files on a user basis, and a storage system and computer program product thereof'20169,262,081'Method for reading file using plurality of tape media'20169,230,600'Data recording method for storing first data and second data into a tape medium'20169,086,809'Writing and reading data having multiple access patterns on tape media'20159,086,810'Writing and reading data having multiple access patterns on tape media'20159,036,286'Reading data stored in recording medium'20159,025,271'Method for reading file using plurality of tape media'20158,984,351'Performing process for removal medium'20158,824,080'Data recording and reading device and method'20148,489,785'Apparatus and method for writing data onto tape medium'20138,477,440'Tape recorder and tape recording that increases empty tape area without loss of necessary data'20138,400,897'Migrating data from one recording medium to another'20138,009,541'Device, method, and computer program product for data migration'20117,995,300'Detection of defective tape drive by aggregating read error statistics'20117,903,363'Same Wrap backhitchless write method to encode data on a tape storage medium'20117,821,728'Detection of defective tape drive by aggregating read error statistics'20107,757,099'Validating an encryption key file on removable storage media'20107,710,681'Optimizing tape speed for a sync operation'20107,587,546'Device, method, and program product for controlling a tape data storage drive'20097,483,231'Apparatus, system, and method for redundant identification of a storage medium format'20097,443,624'Method for recording data freshness degrees by a tape drive'20087,385,776'Device, method, and program product for controlling a tape data storage drive'20087,350,021'Method of controlling write and read of data for tape recording apparatus'20086,950,257'Writing to magnetic tape with backhitchless backspacing and data set invalidation'20056,865,043'Data set information for recovery of synchronized data on magnetic tape'20056,545,069'Polypropylene resin-based films and sheets'20036,423,766'Flame-retardant polycarbonate resin composition and electrical and electronic components made by molding the same'20026,357,030'ECC block format for storage device'20026,245,840'Polypropylene resin-based films and sheets'20016,079,046'Dynamic data transfer bandwidth control'20005,837,757'Flame-retardant polycarbonate compositions'19985,748,335'Image reading apparatus with A/D conversion and adjustment thereof'19985,596,427'Image reading apparatus with A/D conversion and adjustment thereof'19975,241,400'Picture-image formation apparatus having different carrier speeds or carrying modes for detecting a registration mark for image forming'19935,185,659'Color image reading apparatus having common circuitry for the color component signals'19935,153,929'Image reading apparatus outputting corrected image signals'19925,121,230'Image reading apparatus having adjusting circuits for matching the level of and compensating for fluctuation among a plurality of sensing elements'19925,038,207'Color image reading apparatus having common circuitry for the color component signals'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–2018Based in Tokyo, JP· patent location history
1992–1998Patents assigned to CANON KK (6)· patent assignee history
1992–2021Based in Yokohama, JP· patent location history
1998–2003Patents assigned to IDEMITSU PETROCHEMICAL CO (4)· patent assignee history
1998–2002Based in Ichihara, JP· patent location history
2000–2021Patents assigned to IBM (94)· patent assignee history
2000–2016Based in Yamato, JP· patent location history
2010–2021Based in Kanagawa, JP· patent location history
2013–2016Patents assigned to ITAGAKI HIROSHI (7)· patent assignee history
2013–2015Patents assigned to OISHI YUTAKA (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| IBM | 94 | 2000–2021 |
| ITAGAKI HIROSHIself | 7 | 2013–2016 |
| CANON KK | 6 | 1992–1998 |
| IDEMITSU PETROCHEMICAL CO | 4 | 1998–2003 |
| OISHI YUTAKA | 3 | 2013–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yokohama, JP | 77 | 1992–2021 |
| Kanagawa, JP | 12 | 2010–2021 |
| Tokyo, JP | 9 | 1991–2018 |
| Yamato, JP | 5 | 2000–2016 |
| Ichihara, JP | 3 | 1998–2002 |