Patents by Inventor Masami Tashiro
Masami Tashiro 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: 10431247Abstract: According to one embodiment, a magnetic disk drive selects in command evaluation in reordering processing, a command accessible in a shortest time. The device determines whether media bumps which influence a dynamic flying height (DFH) control exist in a seek section between completion of a previous command and start of a selected command or not, calculates a latency necessary for avoidance of the media bumps if it is determined by the determination that the media bumps which influence the DFH control exist, and selects the command accessible in the shortest time including the time obtained by summing the latency calculated by the calculation as the command to be next processed.Type: GrantFiled: March 13, 2018Date of Patent: October 1, 2019Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage CorporationInventors: Tetsuo Kuribayashi, Hironori Kanno, Masami Tashiro
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Publication number: 20190088277Abstract: According to one embodiment, a magnetic disk drive selects in command evaluation in reordering processing, a command accessible in a shortest time. The device determines whether media bumps which influence a dynamic flying height (DFH) control exist in a seek section between completion of a previous command and start of a selected command or not, calculates a latency necessary for avoidance of the media bumps if it is determined by the determination that the media bumps which influence the DFH control exist, and selects the command accessible in the shortest time including the time obtained by summing the latency calculated by the calculation as the command to be next processed.Type: ApplicationFiled: March 13, 2018Publication date: March 21, 2019Inventors: Tetsuo Kuribayashi, Hironori Kanno, Masami Tashiro
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Publication number: 20160170891Abstract: According to one embodiment, there is provided a disk apparatus including a disk medium, a nonvolatile memory, and a controller. In the nonvolatile memory, data to be recorded to the disk medium is written. The controller is configured to perform, according to amount of free space of the nonvolatile memory, write process of the data in the nonvolatile memory collectively, or in multiple times with dividing the write process.Type: ApplicationFiled: March 4, 2015Publication date: June 16, 2016Inventors: Michio Yamamoto, Isao Fujita, Takumi Kakuya, Masami Tashiro, Yuka Kuwano, Takato Kuji, Katsushi Ohta, Seiji Toda
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Patent number: 9239683Abstract: According to one embodiment, there is provided a magnetic disk device including a magnetic disk, a storage unit, and a control unit. The magnetic disk includes a recording region. The storage unit is configured to store a value according to number of accesses to each of a plurality of regions obtained by dividing of the recording region of the magnetic disk in association with each of the plurality of regions. The control unit is configured to count a value according to the number of accesses to each of a plurality of regions in a count step unit that is a value determined according to an elapsed time from occurrence of a specific situation and is a value counted per unit access, and to update the value stored in the storage unit.Type: GrantFiled: March 12, 2014Date of Patent: January 19, 2016Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Michio Yamamoto, Tetsuo Kuribayashi, Masami Tashiro, Kenji Inoue, Takumi Kakuya, Hironori Kanno, Keiichi Yorimitsu
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Patent number: 9093118Abstract: An information reproducing apparatus includes a read unit configured to read data a multiple number of times, a data evaluation unit configured to generate data to be corrected, based on an evaluation on a bit basis of each of a plurality of pieces of data acquired as result of reading the data multiple number of times, and a correction unit configured to correct an error using the data to be corrected generated by the data evaluation unit.Type: GrantFiled: July 29, 2013Date of Patent: July 28, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Masami Tashiro, Hiroyuki Chiba
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Patent number: 9047206Abstract: In a disk drive apparatus, a plurality of data sectors is recorded on a disk. A data sector is designated by a logical block address in accordance with a read command received from a host, and the data is read from the data sector specified by a physical address corresponding to the designated logical block address included in the read command. Predetermined data different from the data read from the designated data sector is sent back to the host in response to information relevant to the physical address included in the read data.Type: GrantFiled: October 23, 2014Date of Patent: June 2, 2015Assignee: Kabushiki Kaisha ToshibaInventor: Masami Tashiro
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Publication number: 20150138667Abstract: According to one embodiment, there is provided a magnetic disk device including a magnetic disk, a storage unit, and a control unit. The magnetic disk includes a recording region. The storage unit is configured to store a value according to number of accesses to each of a plurality of regions obtained by dividing of the recording region of the magnetic disk in association with each of the plurality of regions. The control unit is configured to count a value according to the number of accesses to each of a plurality of regions in a count step unit that is a value determined according to an elapsed time from occurrence of a specific situation and is a value counted per unit access, and to update the value stored in the storage unit.Type: ApplicationFiled: March 12, 2014Publication date: May 21, 2015Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Michio Yamamoto, Tetsuo Kuribayashi, Masami Tashiro, Kenji Inoue, Takumi Kakuya, Hironori Kanno, Keiichi Yorimitsu
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Publication number: 20140281807Abstract: An information reproducing apparatus includes a read unit configured to read data a multiple number of times, a data evaluation unit configured to generate data to be corrected, based on an evaluation on a bit basis of each of a plurality of pieces of data acquired as result of reading the data multiple number of times, and a correction unit configured to correct an error using the data to be corrected generated by the data evaluation unit.Type: ApplicationFiled: July 29, 2013Publication date: September 18, 2014Applicant: Kabushiki Kaisha ToshibaInventors: Masami TASHIRO, Hiroyuki CHIBA
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Patent number: 8794207Abstract: A method for processing a cylinder block is disclosed, wherein a protrusion protruding toward a crankcase is provided at a crankcase-side edge of a cylinder bore and a sprayed coating is formed on an inner surface of the cylinder bore and an inner surface of the protrusion continuous with the inner surface of the cylinder bore. After forming the sprayed coating, at least part of the protrusion is removed together with the sprayed coating formed on the inner surface of the protrusion. Accordingly, even in the case of removing the edge portion of the cylinder bore on the crankcase side, a sufficient margin to be removed can be ensured while a reduction in size of the cylinder block is achieved.Type: GrantFiled: March 4, 2011Date of Patent: August 5, 2014Assignee: Nissan Motor Co., Ltd.Inventors: Eiji Shiotani, Akira Shimizu, Hidenobu Matsuyama, Daisuke Terada, Yoshito Utsumi, Yoshitsugu Noshi, Hiroshi Hatta, Masami Tashiro, Shuji Adachi, Hiroaki Mochida
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Publication number: 20120304955Abstract: A method for processing a cylinder block is disclosed, wherein a protrusion protruding toward a crankcase is provided at a crankcase-side edge of a cylinder bore and a sprayed coating is formed on an inner surface of the cylinder bore and an inner surface of the protrusion continuous with the inner surface of the cylinder bore. After forming the sprayed coating, at least part of the protrusion is removed together with the sprayed coating formed on the inner surface of the protrusion. Accordingly, even in the case of removing the edge portion of the cylinder bore on the crankcase side, a sufficient margin to be removed can be ensured while a reduction in size of the cylinder block is achieved.Type: ApplicationFiled: March 4, 2011Publication date: December 6, 2012Inventors: Eiji Shiotani, Akira Shimizu, Hidenobu Matsuyama, Daisuke Terada, Yoshito Utsumi, Yoshitsugu Noshi, Hiroshi Hatta, Masami Tashiro, Shuji Adachi, Hiroaki Mochida
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Patent number: 7889449Abstract: According to an aspect of an embodiment, a memory device has a medium including a plurality of tracks, each of which has a plurality of sectors separated by a plurality of servo areas, for storing data in the sectors of the tracks, a head for writing data into and reading data from the medium and a controller for determining whether the head has read out data from a sector on a target track correctly or not in reference to information obtained from servo areas sandwiching the sector and for driving the head so as to retry reading out data from the sector when the controller determines that the head failed to have read out data on the target track.Type: GrantFiled: November 7, 2008Date of Patent: February 15, 2011Assignee: Toshiba Storage Device CorporationInventor: Masami Tashiro
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Publication number: 20090141385Abstract: According to an aspect of an embodiment, a memory device has a medium including a plurality of tracks, each of which has a plurality of sectors separated by a plurality of servo areas, for storing data in the sectors of the tracks, a head for writing data into and reading data from the medium and a controller for determining whether the head has read out data from a sector on a target track correctly or not in reference to information obtained from servo areas sandwiching the sector and for driving the head so as to retry reading out data from the sector when the controller determines that the head failed to have read out data on the target track.Type: ApplicationFiled: November 7, 2008Publication date: June 4, 2009Applicant: FUJITSU LIMITEDInventor: Masami Tashiro
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Patent number: 7394606Abstract: On writing information to an information recording medium including multiple recording areas having logical addresses assigned thereto, each of the recording areas having information recorded therein with a check code generated based on the logical address of the recording area added thereto, the logical address is converted to a physical location of the recording area on the information recording medium, the information recorded in the recording area at that location is read and it is checked whether or not there is a match between the check code added to the information and the logical address so as to write the information only in the case where it is confirmed that there is a match.Type: GrantFiled: August 23, 2006Date of Patent: July 1, 2008Assignee: Fujitsu LimitedInventors: Masami Tashiro, Masafumi Sato
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Publication number: 20080082742Abstract: There is provided a storage apparatus capable of reducing command processing time, a control method of the storage apparatus, and a control apparatus thereof. A storage apparatus is capable of receiving a write request from an external device, comprising: an FMT position counter 51 that measures a first measurement value concerning the head position on a track of a recording medium; a data reception counter 41 that measures a second measurement value concerning the received data amount of write request data which is data included in the write request from the external device, and a sequential controller 52 that controls data writing operation for the track based on the first and second measurement values measured respectively by the FMT position counter 51 and data reception counter 41.Type: ApplicationFiled: April 18, 2007Publication date: April 3, 2008Applicant: Fujitsu LimitedInventors: Masami Tashiro, Toshimitsu Kume
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Publication number: 20070214312Abstract: On writing information to an information recording medium including multiple recording areas having logical addresses assigned thereto, each of the recording areas having information recorded therein with a check code generated based on the logical address of the recording area added thereto, the logical address is converted to a physical location of the recording area on the information recording medium, the information recorded in the recording area at that location is read and it is checked whether or not there is a match between the check code added to the information and the logical address so as to write the information only in the case where it is confirmed that there is a match.Type: ApplicationFiled: August 23, 2006Publication date: September 13, 2007Inventors: Masami Tashiro, Masafumi Sato
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Patent number: 6701465Abstract: In a defect information management method and apparatus of the present invention, a defect list contains a sequence of sets of first defect items with respective offset addresses thereof, each first defect item indicating a location of one of first defects on the storage medium, each of the offset addresses, exclusive of the final one, indicating a relative location of a following one of the corresponding set of first defect items for the offset address in the sequence from a beginning of the defect list. A second defect item is added to an end of the defect list when a second defect in a portion of the storage medium inclusive of a location identified by one of the sets of first defect items is detected. An offset address of the second defect item with respect to the beginning of the defect list is calculated.Type: GrantFiled: March 31, 2000Date of Patent: March 2, 2004Assignee: Fujitsu LimitedInventor: Masami Tashiro
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Patent number: 6688674Abstract: A compact vehicle production line. The production line comprises a floor process of assembling floor constituent parts. Each is an aluminum alloy extrusion die cast product, which has been made, in an extrusion die casting process, by forcing molten aluminum alloy through a mold cavity in a predetermined direction. The assembled floor constituent parts are welded to make a floor structure. In an interior parts mount process, interior parts are to the floor structure to make a floor unit. In a body main process, each of two body side structures are trimmed to make a body side unit. A roof structure is trimmed to make a roof unit. The floor unit, the body side units, and the roof unit are assembled. The assembly is welded to make a body unit. In a running parts mount process, an under running unit is mounted to the body unit. In an exterior parts attachment process, color body panels are attached to the body unit.Type: GrantFiled: September 28, 2001Date of Patent: February 10, 2004Assignee: Nissan Motor Co., Ltd.Inventors: Manabu Sato, Masato Takiguchi, Kouji Sato, Kouichi Ohira, Masami Tashiro, Takashi Matsuoka, Takamitsu Tajima, Kenji Kanamori
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Patent number: 6668438Abstract: A compact vehicle production line is disclosed. The production line comprises a floor process of assembling floor constituent parts. Each is an aluminum alloy extrusion die cast product, which has been made, in an extrusion die casting process, by forcing molten aluminum alloy through a mold cavity in a predetermined direction. The assembled floor constituent parts are welded to make a floor structure. In an interior parts mount process, interior parts are to the floor structure to make a floor unit. In a body main process, each of two body side structures are trimmed to make a body side unit. A roof structure is trimmed to make a roof unit. The floor unit, the body side units, and the roof unit are assembled. The assembly is welded to make a body unit. In a running parts mount process, an under running unit is mounted to the body unit. In an exterior parts attachment process, color body panels are attached to the body unit.Type: GrantFiled: September 28, 2001Date of Patent: December 30, 2003Assignee: Nissan Motor Co., Ltd.Inventors: Manabu Sato, Masato Takiguchi, Kouji Sato, Kouichi Ohira, Masami Tashiro, Takashi Matsuoka, Takamitsu Tajima, Kenji Kanamori
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Publication number: 20020042996Abstract: A compact vehicle production line is disclosed. The production line comprises a floor process of assembling floor constituent parts. Each is an aluminum alloy extrusion die cast product, which has been made, in an extrusion die casting process, by forcing molten aluminum alloy through a mold cavity in a predetermined direction. The assembled floor constituent parts are welded to make a floor structure. In an interior parts mount process, interior parts are to the floor structure to make a floor unit. In a body main process, each of two body side structures are trimmed to make a body side unit. A roof structure is trimmed to make a roof unit. The floor unit, the body side units, and the roof unit are assembled. The assembly is welded to make a body unit. In a running parts mount process, an under running unit is mounted to the body unit. In an exterior parts attachment process, color body panels are attached to the body unit.Type: ApplicationFiled: September 28, 2001Publication date: April 18, 2002Inventors: Manabu Sato, Masato Takiguchi, Kouji Sato, Kouichi Ohira, Masami Tashiro, Takashi Matsuoka, Takamitsu Tajima, Kenji Kanamori
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Publication number: 20020014008Abstract: A compact vehicle production line is disclosed. The production line comprises a floor process of assembling floor constituent parts. Each is an aluminum alloy extrusion die cast product, which has been made, in an extrusion die casting process, by forcing molten aluminum alloy through a mold cavity in a predetermined direction. The assembled floor constituent parts are welded to make a floor structure. In an interior parts mount process, interior parts are to the floor structure to make a floor unit. In a body main process, each of two body side structures are trimmed to make a body side unit. A roof structure is trimmed to make a roof unit. The floor unit, the body side units, and the roof unit are assembled. The assembly is welded to make a body unit. In a running parts mount process, an under running unit is mounted to the body unit. In an exterior parts attachment process, color body panels are attached to the body unit.Type: ApplicationFiled: September 28, 2001Publication date: February 7, 2002Inventors: Manabu Sato, Masato Takiguchi, Kouji Sato, Kouichi Ohira, Masami Tashiro, Takashi Matsuoka, Takamitsu Tajima, Kenji Kanamori