Patents by Inventor Shinya Mochizuki
Shinya Mochizuki 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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Publication number: 20080155193Abstract: To provide a staging method capable of detecting an error in data read from a disk device during staging, a disk array control apparatus 100 includes a data read unit 101 for reading data, a first reference data generation unit 102 for generating first reference data from the read data, a second reference data generation unit 103 for similarly generating second reference data, a true-false determination unit 104 for determining whether or not the data read by the data read unit 101 is correct, and a data write unit 105 for writing data to cache memory.Type: ApplicationFiled: September 28, 2007Publication date: June 26, 2008Applicant: FUJITSU LIMITEDInventors: Hidejiro DAIKOKUYA, Mikio Ito, Kazuhiko Ikeuchi, Shinya Mochizuki, Hideo Takahashi, Yoshihito Konta, Norihide Kubota
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Patent number: 7370148Abstract: When a write-back request for writing back new data in a cache memory to disk devices forming a redundant configuration of RAID is generated, a write-back processing unit, reserves a parity buffer area in the cache memory, generates new parity, and then, writes the new data and the new parity to the corresponding disk devices. When an error in which the consistency of RAID is broken occurs in a plurality of the disk devices upon write performed by the write-back processing unit, a recovery processing unit reserves, in the cache memory, a cache stripe area storing data of the entire stripe including the new data which is to be written back, and causes the cache control unit to manage it.Type: GrantFiled: June 30, 2005Date of Patent: May 6, 2008Assignee: Fujitsu LimitedInventors: Kazuhiko Ikeuchi, Mikio Ito, Hidejiro Daikokuya, Shinya Mochizuki, Hideo Takahashi, Yoshihito Konta, Yasutake Satou, Hiroaki Ochi, Tsukasa Makino, Norihide Kubota
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Patent number: 7370145Abstract: A RAID control apparatus comprises at least a cache memory; an update information management table for storing update information; an update information storage unit for storing, in the update information management table, update information by detecting a data update; a reference value generation unit for generating a reference value expressing a load of a write back processing by using a Small Write method and a Read & Bandwidth Write method based on the update information; a write method determination unit for determining a write method according to the reference value and a write unit for carrying out a write processing, in order to provide a write back method for a RAID apparatus capable of improving a processing speed at the time of updating even in the case of including the processing of updating a part of data stripes.Type: GrantFiled: February 17, 2006Date of Patent: May 6, 2008Assignee: Fujitsu LimitedInventors: Kazuhiko Ikeuchi, Mikio Ito, Hidejiro Daikokuya, Shinya Mochizuki, Hideo Takahashi, Yoshihito Konta, Yasutake Satou, Hiroaki Ochi, Tsukasa Makino, Norihide Kubota
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Patent number: 7269767Abstract: The present invention has been made to obtain a magnetic disk apparatus and the like capable of using a patrol region in the magnetic disk to detect a location in need of maintenance in hardware equipment around the magnetic disk in a separate manner from the disk itself and thereby avoiding useless replacement and operating the magnetic disk apparatus at low cost. In a preventive maintenance detection for a magnetic disk apparatus having a patrol function that uses a patrol region in the magnetic disk to determine the presence/absence of the need of preventive maintenance, a data pattern for detecting crosstalk in hardware equipment around the disk is generated, a write command or read command corresponding to the generated data pattern is executed, and the crosstalk is determined/detected based on the command execution result.Type: GrantFiled: August 31, 2005Date of Patent: September 11, 2007Assignee: Fujitsu LimitedInventors: Norihide Kubota, Hideo Takahashi, Hiroaki Ochi, Yoshihito Konta, Yasutake Sato, Tsukasa Makino, Mikio Ito, Hidejirou Daikokuya, Kazuhiko Ikeuchi, Shinya Mochizuki
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Publication number: 20070166657Abstract: There is provided a vertical heat treatment system capable of simplifying the structure of various mechanisms in the vicinity of an opening which is formed in a partition wall separating a housing-box transfer area from a treating-object transfer area (a wafer transfer area), and of contributing to space saving, when an object to be treated is carried in the vertical heat treatment system through the opening to carry out a predetermined treatment.Type: ApplicationFiled: February 13, 2007Publication date: July 19, 2007Inventors: Kazunari Sakata, Koyu Hasegawa, Keiichi Katabuchi, Shingo Watanabe, Shinya Mochizuki, Motoki Akimoto, Hiroshi Motono
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Patent number: 7245350Abstract: An exposure apparatus includes a vacuum chamber, a load-lock chamber disposed between the vacuum chamber and outside the exposure apparatus, a reticle cassette configured to hold a reticle, a conveying unit configured to convey the reticle cassette between the vacuum chamber and the load-lock chamber, and an opening and closing unit configured to open and close the reticle cassette. The opening and closing unit is disposed within the vacuum chamber.Type: GrantFiled: December 15, 2006Date of Patent: July 17, 2007Assignee: Canon Kabushiki KaishaInventors: Shinya Mochizuki, Takashi Kamono
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Publication number: 20070150652Abstract: A method and apparatus for enhancing performance of parity check in computer readable media is provided. For example, in a RAID (N+1) configuration, a virtual data strip is added for a calculation of parity. Data of the virtual data strip is set so that a predetermined portion of a data area in the virtual data strip has a predetermined value. Consequently, performance of parity check performed in a data processing system having a RAID configuration can be enhanced.Type: ApplicationFiled: September 28, 2006Publication date: June 28, 2007Applicant: Fujitsu LimitedInventors: Shinya Mochizuki, Mikio Ito, Hidejiro Daikokuya, Kazuhiko Ikeuchi, Hideo Takahashi, Yoshihito Konta, Yasutake Satou, Hiroaki Ochi, Tsukasa Makino, Norihide Kubota
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Publication number: 20070121092Abstract: An exposure apparatus includes a vacuum chamber, a load-lock chamber disposed between the vacuum chamber and outside the exposure apparatus, a reticle cassette configured to hold a reticle, a conveying unit configured to convey the reticle cassette between the vacuum chamber and the load-lock chamber, and an opening and closing unit configured to open and close the reticle cassette. The opening and closing unit is disposed within the vacuum chamber.Type: ApplicationFiled: December 15, 2006Publication date: May 31, 2007Applicant: Canon Kabushiki KaishaInventors: Shinya Mochizuki, Takashi Kamono
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Publication number: 20070109523Abstract: A reticle cassette includes a bearing portion and a cover, a reticle being disposed on the bearing portion and accommodated in a space between the bearing portion and the cover. The bearing portion includes electrodes for attracting using an electrostatic force and supporting a first surface of the reticle, the first surface having a pattern being formed thereon.Type: ApplicationFiled: November 6, 2006Publication date: May 17, 2007Applicant: CANON KABUSHIKI KAISHAInventor: Shinya Mochizuki
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Publication number: 20070101187Abstract: A RAID system access a physical disk and perform Rebuild/Copy back processing according to a host I/O request, so as to implement high-speed Rebuild/Copy back processing without interfering with the processing of a normal I/O. When one disk device fails, out of a plurality of disk devices constituting a RAID configuration, the controller performs Rebuild/Copy back processing to reconstruct the RAID. In Rebuild/Copy back, the controller reads the data from one disk and writes the data to another disk, so the presence of a normal I/O is judged, and when a normal I/O is absent, read and write of these different disk drives are executed simultaneously. By this, the Rebuild/Copy back time can be decreased.Type: ApplicationFiled: March 17, 2006Publication date: May 3, 2007Applicant: FUJITSU LIMITEDInventors: Hidejirou Daikokuya, Mikio Ito, Kazuhiko Ikeuchi, Shinya Mochizuki, Hideo Takahashi, Yoshihito Konta, Yasutake Sato, Hiroaki Ochi, Tsukasa Makino, Norihide Kubota
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Data storage system, data storage control device, and write error diagnosis method for disks thereof
Publication number: 20070101182Abstract: A storage system has a plurality of disk storage devices and a controller for controlling the plurality of disk storage devices, and diagnosis of a write miss to a disk of the disk storage device. The controller for controlling the plurality of disk storage devices attaches an ID to write data, and after write access to the disk drive, the controller reads the write data from the disk drive, and compares the ID of the read data and the attached ID. The controller updates the ID for each write command. Therefore the old write data and the new write data can be identified, accurate diagnosis is possible, and the failure of an individual disk drive can be detected immediately.Type: ApplicationFiled: March 16, 2006Publication date: May 3, 2007Applicant: FUJITSU LIMITEDInventors: Hideo Takahashi, Norihide Kubota, Hiroaki Ochi, Yoshihito Konta, Yasutake Sato, Tsukasa Makino, Mikio Ito, Hidejirou Daikokuya, Kazuhiko Ikeuchi, Shinya Mochizuki -
Patent number: 7210924Abstract: There is provided a vertical heat treatment system capable of simplifying the structure of various mechanisms in the vicinity of an opening which is formed in a partition wall separating a housing-box transfer area from a treating-object transfer area (a wafer transfer area), and of contributing to space saving, when an object to be treated is carried in the vertical heat treatment system through the opening to carry out a predetermined treatment.Type: GrantFiled: September 14, 2004Date of Patent: May 1, 2007Assignee: Tokyo Electron LimitedInventors: Shinya Mochizuki, Motoki Akimoto
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Publication number: 20070088976Abstract: A RAID system access a physical disk according to a host I/O request, and perform Rebuild/Copy back processing, for implementing high-speed Rebuild/Copy back processing without interrupting the processing of a normal I/O. When one disk device out of a plurality of disk devices constituting the RAID configuration fails, the processing size for one time of Rebuild/Copy back to reconstruct the RAID is changed according to the presence of a normal I/O managed in RAID control. When a normal I/O is present, Rebuild/Copy back can be executed without interrupting the processing of the normal I/O, and in a static state where a normal I/O is absent, a processing size larger than the size in that state can be specified so as to implement Rebuild/Copy back processing at high-speed.Type: ApplicationFiled: February 23, 2006Publication date: April 19, 2007Inventors: Hidejirou Daikokuya, Mikio Ito, Kazuhiko Ikeuchi, Shinya Mochizuki, Hideo Takahashi, Yoshihito Konta, Yasutake Sato, Hiroaki Ochi, Tsukasa Makino, Norihide Kubota
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Publication number: 20070076321Abstract: A storage system has a control module for controlling a plurality of disk storage devices via a transmission path so as to discern the abnormalities of the plurality of disk devices and those of the transmission paths. When a control module for controlling the plurality of disk storage devices detects an error when the disk storage devices are accessed, the control module dummy-accesses the plurality of the disk storage devices on the transmission path, and specifies the suspected failure location based on the result. Therefore it can be discerned whether the suspected failure location is in the transmission path or the disk drive.Type: ApplicationFiled: April 11, 2006Publication date: April 5, 2007Applicant: FUJITSU LIMITEDInventors: Hideo Takahashi, Norihide Kubota, Hiroaki Ochi, Yoshihito Konta, Yasutake Sato, Tsukasa Makino, Mikio Ito, Hidejirou Daikokuya, Kazuhiko Ikeuchi, Shinya Mochizuki
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Publication number: 20070067667Abstract: A RAID control apparatus comprises at least a cache memory; an update information management table for storing update information; an update information storage unit for storing, in the update information management table, update information by detecting a data update; a reference value generation unit for generating a reference value expressing a load of a write back processing by using a Small Write method and a Read & Bandwidth Write method based on the update information; a write method determination unit for determining a write method according to the reference value and a write unit for carrying out a write processing, in order to provide a write back method for a RAID apparatus capable of improving a processing speed at the time of updating even in the case of including the processing of updating a part of data stripes.Type: ApplicationFiled: February 17, 2006Publication date: March 22, 2007Applicant: FUJITSU LIMITEDInventors: Kazuhiko Ikeuchi, Mikio Ito, Hidejiro Daikokuya, Shinya Mochizuki, Hideo Takahashi, Yoshihito Konta, Yasutake Satou, Hiroaki Ochi, Tsukasa Makino, Norihide Kubota
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Publication number: 20060282616Abstract: A magnetic disk apparatus capable of effectively achieving speedup of the response to a read request, a control method and control program therefore are provided. In a control of a magnetic disk apparatus having a RAID configuration in which the same data is written on two disks, a given algorism is selected from a plurality of different algorisms with respect to the data stored in the disks, read commands are issued to the data stored in the two disks, respectively, according to the selected algorithm and the data that has been read first by the read commands that has been issued to the two disks in a read command issuance step is adopted as read data.Type: ApplicationFiled: August 31, 2005Publication date: December 14, 2006Applicant: FUJITSU LIMITEDInventors: Yoshihito Konta, Hideo Takahashi, Hiroaki Ochi, Yasutake Sato, Tsukasa Makino, Norihide Kubota, Mikio Ito, Hidejirou Daikokuya, Kazuhiko Ikeuchi, Shinya Mochizuki
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Publication number: 20060277451Abstract: The present invention has been made to obtain a magnetic disk apparatus and the like capable of using a patrol region in the magnetic disk to detect a location in need of maintenance in hardware equipment around the magnetic disk in a separate manner from the disk itself and thereby avoiding useless replacement and operating the magnetic disk apparatus at low cost. In a preventive maintenance detection for a magnetic disk apparatus having a patrol function that uses a patrol region in the magnetic disk to determine the presence/absence of the need of preventive maintenance, a data pattern for detecting crosstalk in hardware equipment around the disk is generated, a write command or read command corresponding to the generated data pattern is executed, and the crosstalk is determined/detected based on the command execution result.Type: ApplicationFiled: August 31, 2005Publication date: December 7, 2006Applicant: FUJITSU LIMITEDInventors: Norihide Kubota, Hideo Takahashi, Hiroaki Ochi, Yoshihito Konta, Yasutake Sato, Tsukasa Makino, Mikio Ito, Hidejirou Daikokuya, Kazuhiko Ikeuchi, Shinya Mochizuki
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Publication number: 20060212748Abstract: In a system for dispersively storing data and parity in a plurality of storage devices, information in a first storage device is restored by using information stored in the storage devices other than the first storage device when the first storage device fails. And information in a non-restored area in the first storage device and information in a second storage device are restored by using information stored in the storage devices other than the first and the second storage devices when the second storage device fails while the information in the first storage device is being restored.Type: ApplicationFiled: September 29, 2005Publication date: September 21, 2006Applicant: Fujitsu LimitedInventors: Shinya Mochizuki, Mikio Ito, Hidejiro Daikokuya, Kazuhiko Ikeuchi, Hideo Takahashi, Yoshihito Konta, Yasutake Sato, Hiroaki Ochi, Tsukasa Makino, Norihide Kubota
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Publication number: 20060206752Abstract: When a write-back request for writing back new data in a cache memory to disk devices forming a redundant configuration of RAID is generated, a write-back processing unit, reserves a parity buffer area in the cache memory, generates new parity, and then, writes the new data and the new parity to the corresponding disk devices. When an error in which the consistency of RAID is broken occurs in a plurality of the disk devices upon write performed by the write-back processing unit, a recovery processing unit reserves, in the cache memory, a cache stripe area storing data of the entire stripe including the new data which is to be written back, and causes the cache control unit to manage it.Type: ApplicationFiled: June 30, 2005Publication date: September 14, 2006Applicant: FUJITSU LIMITEDInventors: Kazuhiko Ikeuchi, Mikio Ito, Hidejiro Daikokuya, Shinya Mochizuki, Hideo Takahashi, Yoshihito Konta, Yasutake Satou, Hiroaki Ochi, Tsukasa Makino, Norihide Kubota
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Publication number: 20060179215Abstract: In the present invention, for each set of blocks [#(0) to #(N?1)] storing update data, a history block [#(N)] storing an update state value, for example, a generation, time or check code, showing an update state is provided, constituting a set of management data as a check object. When writing update data on a disk, a new update state value is calculated for the same set of management data and stored in memory as update state confirmation value. The new update state value is also set as write data in the history block in the same set of management data, and the entire of the set of management data including update data and update state value are written onto a disk. The history block is read and disk write omissions are detected by comparing the update state value and the update state confirmation value stored in memory.Type: ApplicationFiled: May 18, 2005Publication date: August 10, 2006Applicant: FUJITSU LIMITEDInventors: Shinya Mochizuki, Hideo Takahashi, Mikio Ito, Hidejiro Daikokuya, Kazuhiko Ikeuchi, Hideki Yamanaka, Katsuhiko Nagashima, Akihito Kobayashi, Koji Uchida, Shinichi Nishizono