Patents by Inventor Youichi Gotoh
Youichi Gotoh 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: 7181607Abstract: In response to requests for I/O processing sent from a computer, I/O which should be processed at a priority is enabled to be processed without being affected by other processing, by classifying I/O into those to be processed at a priority and those not to be processed at a priority. The storage control apparatus comprises an I/O processing controller with a memory that is common for the whole controller. The storage control apparatus manages information for dividing and controlling a plurality of I/O processes as priority and non-priority in that memory and operates while suppressing non-priority I/O processing on the basis of information in the memory.Type: GrantFiled: May 23, 2006Date of Patent: February 20, 2007Assignees: Hitachi, Ltd., Hitachi Software Engineering Co., Ltd.Inventors: Takeshi Ido, Youichi Gotoh, Shizuo Yokohata, Shigeo Honma, Toshiyuki Yoshino
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Publication number: 20070011414Abstract: Under a hetero-environment in which different sorts of disk-systems are mixed with each other, a data guaranteeing operation can be carried out. When a cache controller of a local disk system receives a data writing request from a host computer, the cache controller stores data into a local disk provided in a disk device group. The data received from the host computer is also transmitted to a remote disk system and is stored in a remote disk. The data stored in the remote disk is immediately read, and the data written in the remote disk is compared with the data written in the local disk. As a result, since a data guarantee operation on the remote side is processed by the local disk system instead of the remote disk system, a data guaranteeing operation when a remote copying operation is performed can be carried out even in the storage system under a hetero-environment.Type: ApplicationFiled: September 15, 2006Publication date: January 11, 2007Inventors: Shinichi Nakayama, Youichi Gotoh, Keishi Tamura
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Publication number: 20060248237Abstract: In response to requests for I/O processing sent from a computer, I/O which should be processed at a priority is enabled to be processed without being affected by other processing, by classifying I/O into those to be processed at a priority and those not to be processed at a priority. The storage control apparatus comprises an I/O processing controller with a memory that is common for the whole controller. The storage control apparatus manages information for dividing and controlling a plurality of I/O processes as priority and non-priority in that memory and operates while suppressing non-priority I/O processing on the basis of information in the memory.Type: ApplicationFiled: May 23, 2006Publication date: November 2, 2006Applicants: Hitachi, Ltd., Hitachi Software Engineering Co., Ltd.Inventors: Takeshi Ido, Youichi Gotoh, Shizuo Yokohata, Shigeo Honma, Toshiyuki Yoshino
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Patent number: 7124258Abstract: Under a hetero-environment in which different sorts of disk-systems are mixed with each other, a data guaranteeing operation can be carried out. When a cache controller of a local disk system receives a data writing request from a host computer the cache controller stores data into a local disk provided in a disk device group. The data received from the host computer is also transmitted to a remote disk system, and is stored in a remote disk. The data stored in the remote disk is immediately read and the data written in the remote disk is compared with the data written in the local disk. As a result, since a data guarantee operation on the remote side is processed by the local disk system instead of the remote disk system, a data guaranteeing operation when a remote copying operation is performed can be carried out even in the storage system under a hetero-environment.Type: GrantFiled: February 3, 2004Date of Patent: October 17, 2006Assignee: Hitachi, Ltd.Inventors: Shinichi Nakayama, Youichi Gotoh, Keishi Tamura
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Patent number: 6981118Abstract: For each of a plurality of storage devices, there is stored a response time required from when an input/output request sent from a host processor is received until when a processing result of the request is sent to the host processor. One or a plurality of response-time upper limit values assigned respectively to one or a plurality of files to be stored in the storage device are stored and managed. The upper limit value of the file to be stored and each of the response times of the storage devices are compared, and according to the comparison result, a storage device for storing the file is selected. Through such a structure, an operational form of a storage control device may be optimized.Type: GrantFiled: March 10, 2004Date of Patent: December 27, 2005Assignee: Hitachi, Ltd.Inventors: Youichi Gotoh, Shizuo Yokohata
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Publication number: 20050228946Abstract: The present invention allows a reserved state that prevails for an LDEV as a result of a host undergoing a system shutdown or the like to be confirmed and cancelled easily. The server 1 reserves the LDEV 4 and uses same exclusively. When the server 1 undergoes a system shutdown due to a fault or similar (S1), the LDEV 4 then remains reserved (S2). The server 2 is therefore unable to access the LDEV 4. The system administrator reads exclusive control information 6 in the memory 5 via the management terminal 7, and is thus able to display the reserved states of respective LDEVs on a terminal screen and confirm these states. The user then issues an instruction to cancel a reserved state from the management terminal 7 (S3). The disk array device 3 receives the cancellation instruction, and then cancels the reserved state by partially rewriting the exclusive control information 6.Type: ApplicationFiled: June 14, 2004Publication date: October 13, 2005Inventors: Youichi Gotoh, Takeshi Ido, Katsuhiro Uchiumi
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Patent number: 6904469Abstract: In response to requests for I/O processing sent from a computer, I/O which should be processed at a priority is enabled to be processed without being affected by other processing, by classifying I/O into those to be processed at a priority and those not to be processed at a priority. The storage control apparatus comprises an I/O processing controller with a memory that is common for the whole controller. The storage control apparatus manages information for dividing and controlling a plurality of I/O processes as priority and non-priority in that memory and operates while suppressing non-priority I/O processing on the basis of information in the memory.Type: GrantFiled: August 31, 2001Date of Patent: June 7, 2005Assignees: Hitachi, Ltd., Hitachi Software Engineering Co., Ltd.Inventors: Takeshi Ido, Youichi Gotoh, Shizuo Yokohata, Shigeo Honma, Toshiyuki Yoshino
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Publication number: 20050114592Abstract: A channel adapter connected to a host has a local cache memory. The channel adapter duplexes and writes the write-data in the local cache memory in response to a data-write request from the host. Then, the channel adapter sends the write-completion to the host and transfers all of the write-data within the local cache memory to the main cache memory in asynchronous timing. The channel adapter manages directory information of the data within the local cache memory. In response to a data-read request from the host, the channel adapter checks whether the read-data hits or not in the local cache memory based on the directory information. If the read-data hits, the read-data is transferred from the local cache memory to the host.Type: ApplicationFiled: February 3, 2004Publication date: May 26, 2005Inventors: Yonggen Jin, Youichi Gotoh, Shinichi Nakayama
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Publication number: 20050038940Abstract: In response to requests for I/O processing sent from a computer, I/O which should be processed at a priority is enabled to be processed without being affected by other processing, by classifying I/O into those to be processed at a priority and those not to be processed at a priority. The storage control apparatus comprises an I/O processing controller with a memory that is common for the whole controller. The storage control apparatus manages information for dividing and controlling a plurality of I/O processes as priority and non-priority in that memory and operates while suppressing non-priority I/O processing on the basis of information in the memory.Type: ApplicationFiled: September 21, 2004Publication date: February 17, 2005Applicants: Hitachi, Ltd., Hitachi Software Engeneering Co., Ltd.Inventors: Takeshi Ido, Youichi Gotoh, Shizuo Yokohata, Shigeo Honma, Toshiyuki Yoshino
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Publication number: 20050005066Abstract: Under a hetero-environment in which different sorts of disk-systems are mixed with each other, a data guaranteeing operation can be carried out. When a cache controller of a local disk system receives a data writing request from a host computer the cache controller stores data into a local disk provided in a disk device group. The data received from the host computer is also transmitted to a remote disk system, and is stored in a remote disk. The data stored in the remote disk is immediately read and the data written in the remote disk is compared with the data written in the local disk. As a result, since a data guarantee operation on the remote side is processed by the local disk system instead of the remote disk system, a data guaranteeing operation when a remote copying operation is performed can be carried out even in the storage system under a hetero-environment.Type: ApplicationFiled: February 3, 2004Publication date: January 6, 2005Inventors: Shinichi Nakayama, Youichi Gotoh, Keishi Tamura
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Publication number: 20040172506Abstract: For each of a plurality of storage devices, there is stored a response time required from when an input/output request sent from a host processor is received until when a processing result of the request is sent to the host processor. One or a plurality of response-time upper limit values assigned respectively to one or a plurality of files to be stored in the storage device are stored and managed. The upper limit value of the file to be stored and each of the response times of the storage devices are compared, and according to the comparison result, a storage device for storing the file is selected. Through such a structure, an operational form of a storage control device may be optimized.Type: ApplicationFiled: March 10, 2004Publication date: September 2, 2004Applicant: Hitachi, Ltd.Inventors: Youichi Gotoh, Shizuo Yokohata
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Patent number: 6728850Abstract: For each of a plurality of storage devices, there is stored a response time required from when an input/output request sent from a host processor is received until when a processing result of the request is sent to the host processor. One or a plurality of response-time upper limit values assigned respectively to one or a plurality of files to be stored in the storage device are stored and managed. The upper limit value of the file to be stored and each of the response times of the storage devices are compared, and according to the comparison result, a storage device for storing the file is selected. Through such a structure, an operational form of a storage control device may be optimized.Type: GrantFiled: March 28, 2002Date of Patent: April 27, 2004Assignee: Hitachi, Ltd.Inventors: Youichi Gotoh, Shizuo Yokohata
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Patent number: 6678388Abstract: An electroacoustic transducer (1) includes a base (24) and magnetic core (22) a diaphragm (20) supported with a gap between the diaphragm and a forward end of the magnetic core, a magnet (25) constituting a magnetic circuit together with the base (24), the magnetic core (22) and the diaphragm (20) a coil (23) disposed around the magnetic core a coil bobbin (30) for holding the coil (23), a housing (10) for receiving the above-mentioned members, a filler (19) applied to an external surface side of the base (24), and lead terminals (41 and 42) for supplying an electric current. The lead terminals (41 and 42) have protrusion portions (41a and 42a, protruding into an internal surface side of the base (24) in the axial direction of the coil. A coil wire (23a) is wound around the protrusion portions (41a and 42a) so as to be connected to the lead terminals (41 and 42).Type: GrantFiled: August 30, 2001Date of Patent: January 13, 2004Assignee: Star Micronics Co., Ltd.Inventors: Youichi Gotoh, Yoshio Imahori, Yoshiharu Oishi, Kazuyasu Ono
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Publication number: 20030079084Abstract: For each of a plurality of storage devices, there is stored a response time required from when an input/output request sent from a host processor is received until when a processing result of the request is sent to the host processor. One or a plurality of response-time upper limit values assigned respectively to one or a plurality of files to be stored in the storage device are stored and managed. The upper limit value of the file to be stored and each of the response times of the storage devices are compared, and according to the comparison result, a storage device for storing the file is selected. Through such a structure, an operational form of a storage control device may be optimized.Type: ApplicationFiled: March 28, 2002Publication date: April 24, 2003Applicant: Hitachi, Ltd.Inventors: Youichi Gotoh, Shizuo Yokohata
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Patent number: 6501845Abstract: There is provided an electroacoustic transducer 1 including a base 24 made of magnetic material, a magnetic core 22 made of magnetic material and provided erectly on the base 24, a diaphragm 20 made of magnetic material and supported with a gap between the diaphragm and a forward end of the magnetic core, a magnet 25 constituting a magnetic circuit together with the base 24, the magnetic core 22 and the diaphragm 20 so as to provide a magnetostatic field, a coil 23 disposed around the magnetic core for applying an oscillating magnetic field to the magnetic circuit, a coil bobbin 30 for holding the coil 23, and a housing 10 for receiving these above-mentioned members. The coil bobbin 30 is integrally molded with the magnetic core 22 and the base member 24.Type: GrantFiled: August 30, 2001Date of Patent: December 31, 2002Assignee: Star Micronics Co., Ltd.Inventors: Youichi Gotoh, Yoshiharu Oishi, Takao Katsuki, Susumu Tanikawa, Morimasa Fushimi
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Publication number: 20020038391Abstract: In response to requests for I/O processing sent from a computer, I/O which should be processed at a priority is enabled to be processed without being affected by other processing, by classifying I/O into those to be processed at a priority and those not to be processed at a priority. The storage control apparatus comprises an I/O processing controller with a memory that is common for the whole controller. The storage control apparatus manages information for dividing and controlling a plurality of I/O processes as priority and non-priority in that memory and operates while suppressing non-priority I/O processing on the basis of information in the memory.Type: ApplicationFiled: August 31, 2001Publication date: March 28, 2002Inventors: Takeshi Ido, Youichi Gotoh, Shizuo Yokohata, Shigeo Honma, Toshiyuki Yoshino
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Publication number: 20020025058Abstract: There is provided an electroacoustic transducer 1 including a base 24 made of magnetic material, a magnetic core 22 made of magnetic material and provided erectly on the base 24 a diaphragm 20 made of magnetic material and supported with a gap between the diaphragm and a forward end of the magnetic core, a magnet 25 constituting a magnetic circuit together with the base 24, the magnetic core 22 and the diaphragm 20 so as to provide a magnetostatic field, a coil 23 disposed around the magnetic core for applying an oscillating magnetic field to the magnetic circuit, a coil bobbin 30 for holding the coil 23, and a housing 10 for receiving these above-mentioned members. The coil bobbin 30 is integrally molded with the magnetic core 22 and the base member 24.Type: ApplicationFiled: August 30, 2001Publication date: February 28, 2002Inventors: Youichi Gotoh, Yoshiharu Oishi, Takao Katsuki, Susumu Tanikawa, Morimasa Fushimi
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Publication number: 20020025052Abstract: There is provided an electroacoustic transducer 1 comprising a base 24 made of magnetic material, a magnetic core 22 made of magnetic material and provided erectly on the base 24, a diaphragm 20 made of magnetic material and supported with a gap between the diaphragm and a forward end of the magnetic core, a magnet 25 constituting a magnetic circuit together with the base 24, the magnetic core 22 and the diaphragm 20 so as to provide a magnetostatic field, a coil 23 disposed around the magnetic core for applying an oscillating magnetic field to the magnetic circuit, a coil bobbin 30 for holding the coil 23, a housing 10 for receiving the above-mentioned members, a filler 19 applied to an external surface side of the base 24, and lead terminals 41 and 42 for supplying an electric current. The lead terminals 41 and 42 have protrusion portions 41a and 42a, respectively, protruding into an internal surface side of the base 24 in the axial direction of the coil.Type: ApplicationFiled: August 30, 2001Publication date: February 28, 2002Applicant: STAR MICRONICS CO., LTD.Inventors: Youichi Gotoh, Yoshio Imahori, Yoshiharu Oishi, Kazuyasu Ono