Patents by Inventor Hisafumi Koumoto
Hisafumi Koumoto 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: 9461838Abstract: A communication management apparatus includes a token-circulation-order-information storing unit that stores token circulation order, a token-frame processing unit that determines whether transmission right acquiring apparatus information of the token frame indicates the own apparatus and transmits a token frame in which first transmission right acquisition determination information indicating a sequence number of a communication apparatus that can acquire a transmission right in the token circulation order, second transmission right acquisition determination information indicating the number of frames that can be transmitted during one token frame circulation, and transmission right acquiring apparatus information indicating the next transmission destination of the token frame after the own apparatus acquired from the token circulation order are set, and a data-frame-communication processing unit that transmits and receives the data frame, thereby to reduce time required until a communication node that acquiType: GrantFiled: October 13, 2015Date of Patent: October 4, 2016Assignee: Mitsubishi Electric CorporationInventors: Masato Nakamura, Hisafumi Koumoto
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Patent number: 9385826Abstract: A managing station comprises a delay time measuring unit that measures, while transmitting a delay time measurement frame to each of the slave stations and receiving a response frame responsive to the delay time measurement frame from the slave station, an elapsed time from when transmitting the delay time measurement frame to when receiving the response frame and that calculates a delay time of the slave station; and a delay detecting unit that compares the calculated delay time and a delay judgment value that is an average of the delay times calculated in a past for the slave station to determine whether delay is occurring in the slave station for each of the slave stations and that identifies, if delay is occurring in the slave station, the position of a delay element using connection configuration information indicating connection states between the communication apparatuses in the network.Type: GrantFiled: February 21, 2011Date of Patent: July 5, 2016Assignee: Mitsubishi Electric CorporationInventor: Hisafumi Koumoto
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Patent number: 9270483Abstract: A communication management apparatus includes a token-circulation-order-information storing unit that stores token circulation order, a token-frame processing unit that determines whether transmission right acquiring apparatus information of the token frame indicates the own apparatus and transmits a token frame in which first transmission right acquisition determination information indicating a sequence number of a communication apparatus that can acquire a transmission right in the token circulation order, second transmission right acquisition determination information indicating the number of frames that can be transmitted during one token frame circulation, and transmission right acquiring apparatus information indicating the next transmission destination of the token frame after the own apparatus acquired from the token circulation order are set, and a data-frame-communication processing unit that transmits and receives the data frame, thereby to reduce time required until a communication node that acquiType: GrantFiled: December 14, 2011Date of Patent: February 23, 2016Assignee: Mitsubishi Electric CorporationInventors: Masato Nakamura, Hisafumi Koumoto
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Publication number: 20160036729Abstract: A communication management apparatus includes a token-circulation-order-information storing unit that stores token circulation order, a token-frame processing unit that determines whether transmission right acquiring apparatus information of the token frame indicates the own apparatus and transmits a token frame in which first transmission right acquisition determination information indicating a sequence number of a communication apparatus that can acquire a transmission right in the token circulation order, second transmission right acquisition determination information indicating the number of frames that can be transmitted during one token frame circulation, and transmission right acquiring apparatus information indicating the next transmission destination of the token frame after the own apparatus acquired from the token circulation order are set, and a data-frame-communication processing unit that transmits and receives the data frame, thereby to reduce time required until a communication node that acquiType: ApplicationFiled: October 13, 2015Publication date: February 4, 2016Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Masato NAKAMURA, Hisafumi KOUMOTO
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Patent number: 9184933Abstract: A communication management apparatus includes a token-circulation-order-information storing unit that stores token circulation order, a token-frame processing unit that determines whether transmission right acquiring apparatus information of the token frame indicates the own apparatus and transmits a token frame in which first transmission right acquisition determination information indicating a sequence number of a communication apparatus that can acquire a transmission right in the token circulation order, second transmission right acquisition determination information indicating the number of frames that can be transmitted during one token frame circulation, and transmission right acquiring apparatus information indicating the next transmission destination of the token frame after the own apparatus acquired from the token circulation order are set, and a data-frame-communication processing unit that transmits and receives the data frame, thereby to reduce time required until a communication node that acquiType: GrantFiled: December 25, 2008Date of Patent: November 10, 2015Assignee: Mitsubishi Electric CorporationInventors: Masato Nakamura, Hisafumi Koumoto
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Publication number: 20130329753Abstract: A managing station comprises a delay time measuring unit that measures, while transmitting a delay time measurement frame to each of the slave stations and receiving a response frame responsive to the delay time measurement frame from the slave station, an elapsed time from when transmitting the delay time measurement frame to when receiving the response frame and that calculates a delay time of the slave station; and a delay detecting unit that compares the calculated delay time and a delay judgment value that is an average of the delay times calculated in a past for the slave station to determine whether delay is occurring in the slave station for each of the slave stations and that identifies, if delay is occurring in the slave station, the position of a delay element using connection configuration information indicating connection states between the communication apparatuses in the network.Type: ApplicationFiled: February 21, 2011Publication date: December 12, 2013Applicant: MITSUBISHI ELECTRIC CORPORATIONInventor: Hisafumi Koumoto
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Publication number: 20120082170Abstract: A communication management apparatus includes a token-circulation-order-information storing unit that stores token circulation order, a token-frame processing unit that determines whether transmission right acquiring apparatus information of the token frame indicates the own apparatus and transmits a token frame in which first transmission right acquisition determination information indicating a sequence number of a communication apparatus that can acquire a transmission right in the token circulation order, second transmission right acquisition determination information indicating the number of frames that can be transmitted during one token frame circulation, and transmission right acquiring apparatus information indicating the next transmission destination of the token frame after the own apparatus acquired from the token circulation order are set, and a data-frame-communication processing unit that transmits and receives the data frame, thereby to reduce time required until a communication node that acquiType: ApplicationFiled: December 14, 2011Publication date: April 5, 2012Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Masato NAKAMURA, Hisafumi Koumoto
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Publication number: 20110255549Abstract: A communication management apparatus includes a token-circulation-order-information storing unit that stores token circulation order, a token-frame processing unit that determines whether transmission right acquiring apparatus information of the token frame indicates the own apparatus and transmits a token frame in which first transmission right acquisition determination information indicating a sequence number of a communication apparatus that can acquire a transmission right in the token circulation order, second transmission right acquisition determination information indicating the number of frames that can be transmitted during one token frame circulation, and transmission right acquiring apparatus information indicating the next transmission destination of the token frame after the own apparatus acquired from the token circulation order are set, and a data-frame-communication processing unit that transmits and receives the data frame, thereby to reduce time required until a communication node that acquiType: ApplicationFiled: December 25, 2008Publication date: October 20, 2011Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Masato Nakamura, Hisafumi Koumoto