Patents by Inventor Yu Inamura
Yu Inamura 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: 8151249Abstract: Disclosed is an operating system monitoring setting information generator apparatus including: a monitoring setting information management unit configured to store monitoring setting information used for monitoring of an operating system monitoring apparatus; a monitoring setting information output unit configured to generate a monitoring setting information file including the monitoring setting information stored by the monitoring setting information management unit, version information and binding information indicating a correspondence with a monitoring target software program, and to output the generated monitoring setting information file; and a digital signature unit configured to generate a digital signature of the monitoring setting information file, and to add the generated digital signature to the monitoring setting information file.Type: GrantFiled: October 31, 2007Date of Patent: April 3, 2012Assignee: NTT DoCoMo, Inc.Inventors: Ken Ohta, Yu Inamura, Hisashi Oguma
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Patent number: 8042117Abstract: In a computer system according to the present invention, a switch-source OS controller unit includes: a OS switch request receiver unit configured to receive an OS switch request for requesting that the switch-destination OS in a suspend status becomes the OS in the active status; a switch event notifying unit configured to notify event information to the switch-destination OS or an application on the switch-destination OS, the event information being included in the received OS switch request, and requesting the switch-destination OS or the application on the switch-destination OS to perform a process; and a switch controller unit configured to call the OS switching function, by using the event information as an argument, so that the switch-destination OS becomes the OS in the active status.Type: GrantFiled: July 25, 2007Date of Patent: October 18, 2011Assignee: NTT DoCoMo, Inc.Inventors: Ken Ohta, Takehiro Nakayama, Hisatoshi Eguchi, Yu Inamura
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Patent number: 7735082Abstract: A task management system in an operating system executes a plurality of tasks in parallel. The task management system includes an execution standby state changer configured to generate a verifier of a task from data stored in a task address space and to store the generated verifier in a verifier storage area, when the task is changed from an executed state to an execution standby state; and an executed state changer configured to generate a verifier of the task from the data stored in the task address space and to verify matching of the generated verifier with the verifier of the task stored in the verifier storage area, when the task is changed from the execution standby state to the executed state.Type: GrantFiled: July 1, 2005Date of Patent: June 8, 2010Assignee: NTT DoCoMo, Inc.Inventors: Toru Egashira, Yu Inamura, Atsushi Takeshita
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Patent number: 7577851Abstract: A multitask execution system executes a plurality of tasks in parallel. The multitask execution system includes an encryption processor configured to generate a key stream unique to each task, by using key data, a task ID for identifying each task, and an output value, the number of the key data being smaller than the number of the plurality of tasks, the output value being output from a monotonic incremental counter when each task is generated, a value of the monotonic incremental counter configured to continue to be increased without being decreased, and to encrypt data stored in a protected area in a memory space for each task by using the generated key stream.Type: GrantFiled: July 1, 2005Date of Patent: August 18, 2009Assignee: NTT DoCoMo, Inc.Inventors: Yu Inamura, Toru Egashira, Atsushi Takeshita
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Patent number: 7529861Abstract: A peripheral switching device includes an ownership switch request receiver unit configured to receive an ownership switch request for requesting to assign a peripheral to an operating system; an ownership request holding unit configured to receive and hold an ownership request for requesting to ensure or release an ownership of a peripheral to an operating system; a switching judgment unit configured to judge whether or not to execute an assignment of a peripheral to an operating system, in accordance with the ownership switch request and the ownership request; and a switching execution unit configured to execute the assignment of the peripheral to the operating system, in accordance with the judgment result.Type: GrantFiled: July 25, 2007Date of Patent: May 5, 2009Assignee: NTT DoCoMo, Inc.Inventors: Ken Ohta, Takehiro Nakayama, Yu Inamura
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Publication number: 20080184274Abstract: In a computer system according to the present invention, a switch-source OS controller unit includes: a OS switch request receiver unit configured to receive an OS switch request for requesting that the switch-destination OS in a suspend status becomes the OS in the active status; a switch event notifying unit configured to notify event information to the switch-destination OS or an application on the switch-destination OS, the event information being included in the received OS switch request, and requesting the switch-destination OS or the application on the switch-destination OS to perform a process; and a switch controller unit configured to call the OS switching function, by using the event information as an argument, so that the switch-destination OS becomes the OS in the active status.Type: ApplicationFiled: July 25, 2007Publication date: July 31, 2008Applicant: NTT DoCoMo, Inc.Inventors: Ken Ohta, Takehiro Nakayama, Hisatoshi Eguchi, Yu Inamura
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Publication number: 20080177905Abstract: A peripheral switching device includes an ownership switch request receiver unit configured to receive an ownership switch request for requesting to assign a peripheral to an operating system; an ownership request holding unit configured to receive and hold an ownership request for requesting to ensure or release an ownership of a peripheral to an operating system; a switching judgment unit configured to judge whether or not to execute an assignment of a peripheral to an operating system, in accordance with the ownership switch request and the ownership request; and a switching execution unit configured to execute the assignment of the peripheral to the operating system, in accordance with the judgment result.Type: ApplicationFiled: July 25, 2007Publication date: July 24, 2008Applicant: NTT DoCoMo, Inc.Inventors: Ken Ohta, Takehiro Nakayama, Yu Inamura
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Publication number: 20080155509Abstract: Disclosed is an operating system monitoring setting information generator apparatus including: a monitoring setting information management unit configured to store monitoring setting information used for monitoring of an operating system monitoring apparatus; a monitoring setting information output unit configured to generate a monitoring setting information file including the monitoring setting information stored by the monitoring setting information management unit, version information and binding information indicating a correspondence with a monitoring target software program, and to output the generated monitoring setting information file; and a digital signature unit configured to generate a digital signature of the monitoring setting information file, and to add the generated digital signature to the monitoring setting information file.Type: ApplicationFiled: October 31, 2007Publication date: June 26, 2008Applicant: NTT DoCoMo, Inc.Inventors: Ken OHTA, Yu Inamura, Hisashi Oguma
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Publication number: 20060020941Abstract: A multitask execution system executes a plurality of tasks in parallel. The multitask execution system includes an encryption processor configured to generate a key stream unique to each task, by using key data, a task ID for identifying each task, ad an output value, the number of the key data being smaller than the number of the plurality of tasks, the output value being output from a monotonic incremental counter when each task is generated, a value of the monotonic incremental counter configured to continue to be increased without being decreased, and to encrypt data stored in a protected area in a memory space for each task by using the generated key stream.Type: ApplicationFiled: July 1, 2005Publication date: January 26, 2006Applicant: NTT DoCoMo, Inc.Inventors: Yu Inamura, Toru Egashira, Atsushi Takeshita
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Publication number: 20060010447Abstract: A task management system in an operating system executes a plurality of tasks in parallel. The task management system includes an execution standby state changer configured to generate a verifier of a task from data stored in a task address space and to store the generated verifier in a verifier storage area, when the task is changed from an executed state to an execution standby state; and an executed state changer configured to generate a verifier of the task from the data stored in the task address space and to verify matching of the generated verifier with the verifier of the task stored in the verifier storage area, when the task is changed from the execution standby state to the executed state.Type: ApplicationFiled: July 1, 2005Publication date: January 12, 2006Applicant: NTT DoCoMo, Inc.Inventors: Toru Egashira, Yu Inamura, Atsushi Takeshita