Patents by Inventor Chikazu Yokoi
Chikazu Yokoi 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).
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Patent number: 7965502Abstract: A storage device includes an enclosure, a plurality of drive connectors within the enclosure to which media drives are connected, a cooling fan in the enclosure, a backboard positioned to divide an interior space of the enclosure in an anteroposterior direction, and a plurality of temperature-dependent devices disposed behind the backboard. Air is taken in via an enclosure front face from outside the enclosure due to the cooling fan's rotation, flows through the interior space of the enclosure, and passes through the backboard. The backboard has all or some of the drive connectors on a front face thereof, arranged in a matrix configuration having a plurality of rows and a plurality of columns. The plurality of drive connectors includes two first drive connectors, each first drive connector connected to a user-detachable media drive and located in a same column of the matrix configuration.Type: GrantFiled: May 7, 2010Date of Patent: June 21, 2011Assignee: Hitachi, Ltd.Inventors: Kenichi Miyamoto, Chikazu Yokoi
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Patent number: 7911789Abstract: In the disk array system, in the basic chassis, HDD modules are installed from a front surface in a front part of a backboard, and duplex CTL modules are installed up and down from a rear surface in a rear part, and duplex power source modules containing fans are installed in the left and right sides thereof. By the operation of the fans, in the rear part, the cooling air flows separately into each CTL module and into each power source module, and the cooling air having passed through the area of the duct by a block in the CTL module is drawn by the fans in the power source module through a ventilation hole and is then exhausted outside. The cooling air flow path to the plurality of ICs is divided by the block. The rotation speed of the fans is controlled by using a temperature sensor.Type: GrantFiled: August 13, 2009Date of Patent: March 22, 2011Assignee: Hitachi, Ltd.Inventors: Tsuyoshi Sasagawa, Hirokazu Takahashi, Takahiko Iwasaki, Taro Takahashi, Chikazu Yokoi
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Publication number: 20100220436Abstract: A storage device includes an enclosure, a plurality of drive connectors within the enclosure to which media drives are connected, a cooling fan in the enclosure, a backboard positioned to divide an interior space of the enclosure in an anteroposterior direction, and a plurality of temperature-dependent devices disposed behind the backboard. Air is taken in via an enclosure front face from outside the enclosure due to the cooling fan's rotation, flows through the interior space of the enclosure, and passes through the backboard. The backboard has all or some of the drive connectors on a front face thereof, arranged in a matrix configuration having a plurality of rows and a plurality of columns. The plurality of drive connectors includes two first drive connectors, each first drive connector connected to a user-detachable media drive and located in a same column of the matrix configuration.Type: ApplicationFiled: May 7, 2010Publication date: September 2, 2010Applicant: Hitachi, Ltd.Inventors: Kenichi Miyamoto, Chikazu Yokoi
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Patent number: 7738254Abstract: The disk array system includes: controller modules, power source modules, and battery modules of a basic chassis; enclosure modules and power source modules of an expanded chassis; and operation levers which are commonly used for operations of insertion/removal and fixation of the modules. The operation lever includes a rotary shaft portion serving as a fulcrum point, a lever main body and a latch portion located on one side of the lever, and a hook portion located on the other side thereof. When a module is inserted and fixed, a user rotates the lever main body. By this means, the latch portion and the hook portion are fixed to a receiving portion and the module is connected and fixed to the backboard with a connector.Type: GrantFiled: January 23, 2008Date of Patent: June 15, 2010Assignee: Hitachi, Ltd.Inventors: Yuri Oyama, Tsuyoshi Sasagawa, Chikazu Yokoi
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Patent number: 7724529Abstract: The disk array system includes: controller modules, power source modules, and battery modules of a basic chassis; enclosure modules and power source modules of an expanded chassis; and operation levers which are commonly used for operations of insertion/removal and fixation of the modules. The operation lever includes a rotary shaft portion serving as a fulcrum point, a lever main body and a latch portion located on one side of the lever, and a hook portion located on the other side thereof. When a module is inserted and fixed, a user rotates the lever main body. By this means, the latch portion and the hook portion are fixed to a receiving portion and the module is connected and fixed to the backboard with a connector.Type: GrantFiled: February 8, 2008Date of Patent: May 25, 2010Assignee: Hitachi, Ltd.Inventors: Yuri Oyama, Tsuyoshi Sasagawa, Yuki Sakuma, Chikazu Yokoi
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Patent number: 7719834Abstract: Two or more media drives that cannot be detached by the user are pre-installed in an enclosure. An expansion slot member having the smaller number of expansion drive slots than the number of media drives that can be pre-installed are provided. The media drives that are installed via the expansion drive slots are installed so as to be detached by the user.Type: GrantFiled: January 14, 2008Date of Patent: May 18, 2010Assignee: Hitachi, Ltd.Inventors: Kenichi Miyamoto, Chikazu Yokoi
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Publication number: 20100002374Abstract: In the disk array system, in the basic chassis, HDD modules are installed from a front surface in a front part of a backboard, and duplex CTL modules are installed up and down from a rear surface in a rear part, and duplex power source modules containing fans are installed in the left and right sides thereof. By the operation of the fans, in the rear part, the cooling air flows separately into each CTL module and into each power source module, and the cooling air having passed through the area of the duct by a block in the CTL module is drawn by the fans in the power source module through a ventilation hole and is then exhausted outside. The cooling air flow path to the plurality of ICs is divided by the block. The rotation speed of the fans is controlled by using a temperature sensor.Type: ApplicationFiled: August 13, 2009Publication date: January 7, 2010Inventors: Tsuyoshi Sasagawa, Hirokazu Takahashi, Takahiko Iwasaki, Taro Takahashi, Chikazu Yokoi
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Patent number: 7593225Abstract: In the disk array system, in the basic chassis, HDD modules are installed from a front surface in a front part of a backboard, and duplex CTL modules are installed up and down from a rear surface in a rear part, and duplex power source modules containing fans are installed in the left and right sides thereof. By the operation of the fans, in the rear part, the cooling air flows separately into each CTL module and into each power source module, and the cooling air having passed through the area of the duct by a block in the CTL module is drawn by the fans in the power source module through a ventilation hole and is then exhausted outside. The cooling air flow path to the plurality of ICs is divided by the block. The rotation speed of the fans is controlled by using a temperature sensor.Type: GrantFiled: January 30, 2008Date of Patent: September 22, 2009Assignee: Hitachi, Ltd.Inventors: Tsuyoshi Sasagawa, Hirokazu Takahashi, Takahiko Iwasaki, Taro Takahashi, Chikazu Yokoi
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Publication number: 20080253077Abstract: Two or more media drives that cannot be detached by the user are pre-installed in an enclosure. An expansion slot member having the smaller number of expansion drive slots than the number of media drives that can be pre-installed are provided. The media drives that are installed via the expansion drive slots are installed so as to be detached by the user.Type: ApplicationFiled: January 14, 2008Publication date: October 16, 2008Inventors: Kenichi Miyamoto, Chikazu Yokoi
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Publication number: 20080239657Abstract: The disk array system includes: controller modules, power source modules, and battery modules of a basic chassis; enclosure modules and power source modules of an expanded chassis; and operation levers which are commonly used for operations of insertion/removal and fixation of the modules. The operation lever includes a rotary shaft portion serving as a fulcrum point, a lever main body and a latch portion located on one side of the lever, and a hook portion located on the other side thereof. When a module is inserted and fixed, a user rotates the lever main body. By this means, the latch portion and the hook portion are fixed to a receiving portion and the module is connected and fixed to the backboard with a connector.Type: ApplicationFiled: February 8, 2008Publication date: October 2, 2008Inventors: Yuri Oyama, Tsuyoshi Sasagawa, Yuki Sakuma, Chikazu Yokoi
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Publication number: 20080239655Abstract: The disk array system includes: controller modules, power source modules, and battery modules of a basic chassis; enclosure modules and power source modules of an expanded chassis; and operation levers which are commonly used for operations of insertion/removal and fixation of the modules. The operation lever includes a rotary shaft portion serving as a fulcrum point, a lever main body and a latch portion located on one side of the lever, and a hook portion located on the other side thereof. When a module is inserted and fixed, a user rotates the lever main body. By this means, the latch portion and the hook portion are fixed to a receiving portion and the module is connected and fixed to the backboard with a connector.Type: ApplicationFiled: January 23, 2008Publication date: October 2, 2008Inventors: Yuri Oyama, Tsuyoshi Sasagawa, Chikazu Yokoi
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Publication number: 20080239656Abstract: In the disk array system, in the basic chassis, HDD modules are installed from a front surface in a front part of a backboard, and duplex CTL modules are installed up and down from a rear surface in a rear part, and duplex power source modules containing fans are installed in the left and right sides thereof. By the operation of the fans, in the rear part, the cooling air flows separately into each CTL module and into each power source module, and the cooling air having passed through the area of the duct by a block in the CTL module is drawn by the fans in the power source module through a ventilation hole and is then exhausted outside. The cooling air flow path to the plurality of ICs is divided by the block. The rotation speed of the fans is controlled by using a temperature sensor.Type: ApplicationFiled: January 30, 2008Publication date: October 2, 2008Applicant: Hitachi, Ltd.Inventors: Tsuyoshi Sasagawa, Hirokazu Takahashi, Takahiko Iwasaki, Taro Takahashi, Chikazu Yokoi
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Patent number: 5220552Abstract: A disc apparatus includes a surface having a slot used for inserting therethrough a disc and a guide mounted to the surface so as to be rotatable up to a position substantially perpendicular to the surface, the guide having a face on the substantial same level as that of an edge of the slot, the face having dimensions enough to cover the slot. A plurality of grooves or a brush extending longitudinally with respect to the slot may be provided on the guide. A projection is projected in a direction substantially perpendicular to both one edge of the slot and the surface of the apparatus. The projection serves to make the positioning when inserting the disc easy. A magnetic substance and a magnet are respectively mounted to positions of the guide and the surface of the apparatus corresponding to each other. The magnetic substance and the magnet serve to bring the guide into contact with the apparatus and thus are effective for preventing the dust from entering into the apparatus.Type: GrantFiled: August 15, 1991Date of Patent: June 15, 1993Assignee: Hitachi, Ltd.Inventors: Chikazu Yokoi, Masayuki Tamasaku, Masaru Yokoyama, Shunji Fujimori
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Patent number: 5060207Abstract: A magneto-optical recording/reproducing apparatus includes a frame, a cartridge containing therein a magneto-optical recording disk, an optical head for applying an optical beam on the recording disk, an electromagnet for applying a bias magnetic field on the recording disk, a cartridge holder for holding therein the cartridge, a mechanism for reciprocating the cartridge holder between an insertion position and a loading position in which a recording, a reproducing and an erasing operations are carried out, a turn table for rotating the recording disk on the loading position, and a driving mechanism. The driving mechanism drives the electromagnet close to the recording disk when it is to be in the loading position and away from the recording disk when it is to be in the insertion position in opposite directions perpendicular to a plane of the recording disk in accordance with movement of the cartridge holder.Type: GrantFiled: October 27, 1989Date of Patent: October 22, 1991Assignee: Hitachi, Ltd.Inventors: Tokuya Kaneda, Chikazu Yokoi
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Patent number: D573988Type: GrantFiled: August 30, 2007Date of Patent: July 29, 2008Assignee: Hitachi, Ltd.Inventors: Kazuhiko Nishiyama, Toshiyuki Utsuki, Chikazu Yokoi, Yoshikatsu Kasahara, Youji Okabe
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Patent number: D575780Type: GrantFiled: August 30, 2007Date of Patent: August 26, 2008Assignee: Hitachi, Ltd.Inventors: Kazuhiko Nishiyama, Toshiyuki Utsuki, Sayuri Hashizume, Chikazu Yokoi, Takamasa Ishikawa, Masami Aoki, Tomoyuki Shimaguchi
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Patent number: D575782Type: GrantFiled: August 30, 2007Date of Patent: August 26, 2008Assignee: Hitachi, Ltd.Inventors: Kazuhiko Nishiyama, Toshiyuki Utsuki, Chikazu Yokoi, Takamasa Ishikawa
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Patent number: D690694Type: GrantFiled: August 8, 2011Date of Patent: October 1, 2013Assignee: Hitachi, Ltd.Inventors: Toshiyuki Utsuki, Sayuri Hashizume, Koichi Umezawa, Kenta Kumagai, Chikazu Yokoi, Yoshikatsu Kasahara
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Patent number: D730894Type: GrantFiled: April 9, 2013Date of Patent: June 2, 2015Assignee: HITACHI, LTD.Inventors: Junpei Hokari, Toshiyuki Utsuki, Koichi Umezawa, Kenta Kumagai, Chikazu Yokoi, Yoshikatsu Kasahara