Patents by Inventor Kenichi Utsumi

Kenichi Utsumi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20150372331
    Abstract: Provided is a high-concentration vanadium electrolytic solution containing a high concentration of vanadium ions, which could not conventionally be prepared, and which can be used in a circulation-type redox flow battery or a non-circulation-type redox non-flow battery and in which sludge is unlikely to be generated, and a method and a device for producing the same. To solve the above-discussed problems, the vanadium electrolytic solution which is a sulfuric acid solution, includes vanadium ions in the range of from over 1.7 mol/L to 3.5 mol/L.
    Type: Application
    Filed: June 25, 2013
    Publication date: December 24, 2015
    Applicant: GALAXY CO., LTD
    Inventor: Kenichi UTSUMI
  • Patent number: 8238204
    Abstract: In order to facilitate the management of the hardware key of a library apparatus employing the LTO system, a write function of a noncontact memory (CM: cartridge memory) contained in an LTO tape cartridge is implemented in a medium carrying mechanism part of the library apparatus, and during an insertion to a tape drive, the IDs unique to a library control part and to the medium carrying mechanism part are recorded in the non-contact memory and utilized as the hardware key of an encrypting apparatus. The hardware key written once is overwritten (erased) during an ejection, thereby preventing leakage of key information.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: August 7, 2012
    Assignee: Fujitsu Limited
    Inventors: Yoshiharu Itou, Kinya Saito, Kenichi Utsumi, Reisuke Nakagawa, Hitomi Akiyama, Ichirou Sakuma, Hiroyasu Inagaki
  • Patent number: 7768733
    Abstract: Disclosed is a method, for erasing data from a magnetic tape storage medium (92) housed in a cartridge (86) containing a memory in which are stored the last written track position (yy) of the last written, most recent information and the last track position (xx) of past information written in the past and remaining unerased, comprising: the step of reading out of the memory (91) the last written track position of the most recent information and the last track position of the past information; the step (S124) of determining whether the data should be erased up to the last written track position of the most recent information or up to the last track position of the past information; and the step (S126, S128) of erasing the data up to the determined position, thereby shortening the data erase time of the magnetic tape while completely solving a security problem by making provisions to completely erase the data of the most recently written information or the data of the past information written in the past and re
    Type: Grant
    Filed: July 8, 2005
    Date of Patent: August 3, 2010
    Assignee: Fujitsu Limited
    Inventors: Kimya Saito, Kenichi Utsumi, Reisuke Nakagawa, Hitomi Akiyama, Ichirou Sakuma, Hiroyasu Inagaki
  • Publication number: 20080010396
    Abstract: In order to facilitate the management of the hardware key of a library apparatus employing the LTO system, a write function of a noncontact memory (CM: cartridge memory) contained in an LTO tape cartridge is implemented in a medium carrying mechanism part of the library apparatus, and during an insertion to a tape drive, the IDs unique to a library control part and to the medium carrying mechanism part are recorded in the non-contact memory and utilized as the hardware key of an encrypting apparatus. The hardware key written once is overwritten (erased) during an ejection, thereby preventing leakage of key information.
    Type: Application
    Filed: September 14, 2007
    Publication date: January 10, 2008
    Applicant: FUJITSU LIMITED
    Inventors: Yoshiharu Itou, Kinya Saito, Kenichi Utsumi, Reisuke Nakagawa, Hitomi Akiyama, Ichirou Sakuma, Hiroyasu Inagaki
  • Patent number: 7302581
    Abstract: A drive preserves a default input password. When there is no password input from the user, the default input password is regarded as a user input password and is compared and collated with a password for access protection, thereby controlling the access protection. In this instance, if the default input password and the password for access protection have the same value, a collation coincidence is obtained. The drive permits the access without needing a password input of the user.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: November 27, 2007
    Assignee: Fujitsu Limited
    Inventors: Kenichi Utsumi, Yoshiaki Uchida, Hiroyuki Kobayashi
  • Patent number: 7165267
    Abstract: A drive preserves a default input password. When there is no password input from the user, the default input password is regarded as a user input password and is compared and collated with a password for access protection, thereby controlling the access protection. In this instance, if the default input password and the password for access protection have the same value, a collation coincidence is obtained. The drive permits the access without needing a password input of the user.
    Type: Grant
    Filed: September 24, 1998
    Date of Patent: January 16, 2007
    Assignee: Fujitsu Limited
    Inventors: Kenichi Utsumi, Yoshiaki Uchida, Hiroyuki Kobayashi
  • Patent number: 7139147
    Abstract: A drive control apparatus receives an instruction from an upper unit, to mount a predetermined medium onto a predetermined drive unit. If a combination of the predetermined medium and the predetermined drive unit is determined as inappropriate, the drive control unit replies to the upper unit that the predetermined drive unit cannot be used. A combination of a medium and a drive is appropriate if both, the medium and the drive are suitable for any one of encrypted and unencrypted data.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: November 21, 2006
    Assignee: Fujitsu Limited
    Inventors: Mitsuru Yasue, Kinya Saito, Kenichi Utsumi, Reisuke Nakagawa, Hitomi Akiyama, Ichirou Sakuma, Hiroyasu Inagaki, Yoshiharu Itoh
  • Publication number: 20060215305
    Abstract: A drive control apparatus receives an instruction from an upper unit, to mount a predetermined medium onto a predetermined drive unit. If a combination of the predetermined medium and the predetermined drive unit is determined as inappropriate, the drive control unit replies to the upper unit that the predetermined drive unit cannot be used. A combination of a medium and a drive is appropriate if both, the medium and the drive are suitable for any one of encrypted and unencrypted data.
    Type: Application
    Filed: July 25, 2005
    Publication date: September 28, 2006
    Inventors: Mitsuru Yasue, Kinya Saito, Kenichi Utsumi, Reisuke Nakagawa, Hitomi Akiyama, Ichirou Sakuma, Hiroyasu Inagaki, Yoshiharu Itoh
  • Publication number: 20060209446
    Abstract: Disclosed is a method, for erasing data from a magnetic tape storage medium (92) housed in a cartridge (86) containing a memory in which are stored the last written track position (yy) of the last written, most recent information and the last track position (xx) of past information written in the past and remaining unerased, comprising: the step of reading out of the memory (91) the last written track position of the most recent information and the last track position of the past information; the step (S124) of determining whether the data should be erased up to the last written track position of the most recent information or up to the last track position of the past information; and the step (S126, S128) of erasing the data up to the determined position, thereby shortening the data erase time of the magnetic tape while completely solving a security problem by making provisions to completely erase the data of the most recently written information or the data of the past information written in the past and re
    Type: Application
    Filed: July 8, 2005
    Publication date: September 21, 2006
    Applicant: FUJITSU LIMITED
    Inventors: Kinya Saito, Kenichi Utsumi, Reisuke Nakagawa, Hitomi Akiyama, Ichirou Sakuma, Hiroyasu Inagaki
  • Patent number: 6999947
    Abstract: There is provided a license devolution system for devolving the right of using as to contents. The license devolution system makes it possible to copy or distribute contents while contributing to a protection of the copyright for the contents. Contents is encrypted with a first key. The first key and use information are encrypted with a second key consisting of a media ID for identifying a first storage medium in which the first key and the use information are stored. In order to devolve the right of using as to the contents, the contents is transferred to a second storage medium of a destination of devolution in the form of encryption. The first key and the use information are decoded with the media ID of the first storage medium, and further encrypted with the media ID of the second storage medium of the destination of devolution into storage in the second storage medium of the destination of devolution.
    Type: Grant
    Filed: November 9, 1998
    Date of Patent: February 14, 2006
    Assignee: Fujitsu Limited
    Inventors: Kenichi Utsumi, Hideyuki Hirano, Seigo Kotani
  • Publication number: 20050246765
    Abstract: A drive preserves a default input password. When there is no password input from the user, the default input password is regarded as a user input password and is compared and collated with a password for access protection, thereby controlling the access protection. In this instance, if the default input password and the password for access protection have the same value, a collation coincidence is obtained. The drive permits the access without needing a password input of the user.
    Type: Application
    Filed: July 1, 2005
    Publication date: November 3, 2005
    Inventors: Kenichi Utsumi, Yoshiaki Uchida, Hiroyuki Kobayashi
  • Patent number: 6717766
    Abstract: Provides an automatic changer with excellent space efficiency, by reducing the size of a hand mechanism section that is mounted with a CCD. The automatic changer selects and holds one desired cartridge from among one of accommodation cells provided in a magazine, conveys this selected cartridge to a recording/reproducing apparatus, and reads a bar code label adhered to the side surface of the cartridge thereby to identify the cartridge. The automatic changer has the CCD that reads a bar code disposed in the inner part of a casing that movably accommodates a hand mechanism section for holding the cartridge. The automatic changer also has a condenser lens for focusing the image of the bar code on the CCD disposed at one part of the hand mechanism section. With this arrangement, the automatic changer moves the hand mechanism section to the front of the cartridge accommodated in the accommodation cell, and focuses the image of the bar code on the CCD. Then, the CCD identifies the contents of the cartridge.
    Type: Grant
    Filed: May 10, 2002
    Date of Patent: April 6, 2004
    Assignee: Fujistu Limited
    Inventors: Koujirou Hashimoto, Kenichi Utsumi, Yuji Kato, Kazuhiko Kawase, Satoshi Kanbayashi, Yasushi Goto
  • Publication number: 20030030938
    Abstract: Provides an automatic changer with excellent space efficiency, by reducing the size of a hand mechanism section that is mounted with a CCD. The automatic changer selects and holds one desired cartridge from among one of accommodation cells provided in a magazine, conveys this selected cartridge to a recording/reproducing apparatus, and reads a bar code label adhered to the side surface of the cartridge thereby to identify the cartridge. The automatic changer has the CCD that reads a bar code disposed in the inner part of a casing that movably accommodates a hand mechanism section for holding the cartridge. The automatic changer also has a condenser lens for focusing the image of the bar code on the CCD disposed at one part of the hand mechanism section. With this arrangement, the automatic changer moves the hand mechanism section to the front of the cartridge accommodated in the accommodation cell, and focuses the image of the bar code on the CCD. Then, the CCD identifies the contents of the cartridge.
    Type: Application
    Filed: May 10, 2002
    Publication date: February 13, 2003
    Applicant: Fujitsu Limited
    Inventors: Koujirou Hashimoto, Kenichi Utsumi, Yuji Kato, Kazuhiko Kawase, Satoshi Kanbayashi, Yasushi Goto
  • Patent number: 6449223
    Abstract: The present invention relates to a library apparatus capable of enhancing the coupling accuracy and the positioning accuracy among a plurality of lockers to bring up the traveling accuracy and positional accuracy of an accessor within a passage penetrating the lockers so that the accessor can surely accomplish the insertion/extraction of a cartridge into/from a storage rack or a deck. For this purpose, a supporting member which holds a rail for guiding the accessor along a direction of coupling the plurality of lockers within the passage is installed in the coupling direction for each of the lockers, and a positioning groove in which a bar-like tool is fitted when positioning the adjacent lockers with respect to each other is made in an end portion of the supporting member in the coupling direction. This invention is applicable to a large-capacity external memory system storing a large number of cartridges such as magnetic tape cartridges and optical disk cartridges.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: September 10, 2002
    Assignee: Fujitsu Limited
    Inventors: Toshihito Kanetsuku, Kenichi Utsumi, Takahisa Miyamoto, Yutaka Sugai, Hitoshi Saito, Hideaki Yoshida, Osamu Ohmori
  • Patent number: 6428125
    Abstract: In order to prevent a deck tower from collapsing because two or more decks are drawn at the same surface side of the deck tower, stopper mechanisms for preventing the deck from being drawn are provided at deck shelves at the upper and lower tiers. A deck apparatus includes a stopper member for preventing the decks from being drawn, which is movably mounted, so that the stopper mechanisms at the upper and lower tiers may be linked with each other. It also includes a locking arm for when the stopper member at any shelf is moved to release the deck from being locked, preventing the stopper members at the remaining shelves from moving. The locking arm allows only an deck to be alternatively drawn.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: August 6, 2002
    Assignee: Fujitsu Limited
    Inventors: Hiroshi Nakazawa, Takahisa Miyamoto, Hiroyuki Sugihara, Kenichi Utsumi
  • Patent number: 6425723
    Abstract: In order to achieve a magazine structure in which any necessary cartridge can be removed or inserted while a magazine is mounted in an autoloading device, a carrier unit is equipped with a lock releasing mechanism at the distal ends of openable/closable arms thereof so that a cartridge received in the magazine may be individually released from locking. This prevents any failure on the reading and writing of data due to removal of any wrong cartridge since the cartridge to be released can be defined by a programmable operation of the carrier unit.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: July 30, 2002
    Assignee: Fujitsu Limited
    Inventors: Tomoyuki Okada, Yuji Kato, Hirofumi Saito, Takahisa Miyamoto, Kenichi Utsumi
  • Publication number: 20010032088
    Abstract: There is provided a license devolution system for devolving the right of using as to contents. The license devolution system makes it possible to copy or distribute contents while contributing to a protection of the copyright for the contents. Contents is encrypted with a first key. The first key and use information are encrypted with a second key consisting of a media ID for identifying a first storage medium in which the first key and the use information are stored. In order to devolve the right of using as to the contents, the contents is transferred to a second storage medium of a destination of devolution in the form of encryption. The first key and the use information are decoded with the media ID of the first storage medium, and further encrypted with the media ID of the second storage medium of the destination of devolution into storage in the second storage medium of the destination of devolution.
    Type: Application
    Filed: November 9, 1998
    Publication date: October 18, 2001
    Applicant: FUJITSU LIMITED
    Inventors: Kenichi UTSUMI , Hideyuki Hirano , Seigo Kotani
  • Patent number: 6290072
    Abstract: A library apparatus is capable of enhancing the dimensional accuracy of locker frame structures to allow an accessor to surely carry out the insertion/extraction of a cartridge into/from a storage unit or a deck. Each of the locker frame structures is made up of a top board, a base and sheet metal columns vertically standing between corner portions of the top board and the base. Each of the sheet metal columns is fixedly welded to the top board and the base from the inside of the locker. The library apparatus is applicable to a large-capacity external storage system storing a large number of cartridges such as magnetic tape cartridges and optical disk cartridges.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: September 18, 2001
    Assignee: Fujitsu Limited
    Inventors: Kenichi Utsumi, Toshihito Kanetsuku, Takahisa Miyamoto, Yutaka Sugai, Osamu Ohmori
  • Patent number: 6278984
    Abstract: A vendor ID is written to a system area of a write-once optical disk. When the write-once optical disk is loaded onto a write-once disk drive, a control CPU reads the vendor ID. The vendor ID is written into the header of software received through an interface unit. When the software is input to an SD circuit, the control CPU reads the vendor ID. The control CPU compares the vendor ID in the system area of the write-once optical disk with the vendor ID of the header of the software and checks whether or not the two IDs are identical. If the two IDs correspond to each other, the control CPU writes the software to the write-once optical disk.
    Type: Grant
    Filed: July 27, 1995
    Date of Patent: August 21, 2001
    Assignee: Fujitsu Limited
    Inventors: Satoshi Itami, Kazuo Nakashima, Kenichi Utsumi
  • Patent number: 6198594
    Abstract: A library apparatus is provided with a cartridge forced exit station for forcibly discharging a defective cartridge for safe removal by an operator. The cartridge forced exit station includes a storage rack for accepting the defective from an operating space side of a transferring mechanism in the interior of the library apparatus. The storage rack houses the defective cartridge. The storage rack is configured to selectively prevent access between a cartridge storage space in the storage rack and the operating space side.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: March 6, 2001
    Assignee: Fujitsu Limited
    Inventors: Kenichi Utsumi, Toshihito Kanetsuku, Takahisa Miyamoto, Hiroshi Nakazawa, Kazuhiko Kawase, Osamu Ohmori