Patents by Inventor Seiji Meki
Seiji Meki 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: 10193617Abstract: A relay method includes transmitting, by a first apparatus in a ring network, a first control frame in which information of the first apparatus is stored, through a first port different from a second port where a communication failure is detected; receiving, by a second apparatus in the ring network, the first control frame through a third port, when the communication failure does not occur at a side of a fourth port different from the third port: storing information of the second apparatus in the first control frame; and transmitting the first control frame through the fourth port; and when the communication failure occurs at the side of the fourth port, determining whether a data frame flowing into the ring network is affected by the communication failure for every VLAN (virtual local area network) based on the first control frame; and switching a communication path set in an affected VLAN.Type: GrantFiled: November 21, 2016Date of Patent: January 29, 2019Assignee: FUJITSU LIMITEDInventor: Seiji Meki
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Publication number: 20170070284Abstract: A relay method includes transmitting, by a first apparatus in a ring network, a first control frame in which information of the first apparatus is stored, through a first port different from a second port where a communication failure is detected; receiving, by a second apparatus in the ring network, the first control frame through a third port, when the communication failure does not occur at a side of a fourth port different from the third port: storing information of the second apparatus in the first control frame; and transmitting the first control frame through the fourth port; and when the communication failure occurs at the side of the fourth port, determining whether a data frame flowing into the ring network is affected by the communication failure for every VLAN (virtual local area network) based on the first control frame; and switching a communication path set in an affected VLAN.Type: ApplicationFiled: November 21, 2016Publication date: March 9, 2017Applicant: FUJITSU LIMITEDInventor: Seiji Meki
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Patent number: 9509398Abstract: A relay method includes transmitting, by a first apparatus in a ring network, a first control frame in which information of the first apparatus is stored, through a first port different from a second port where a communication failure is detected; receiving, by a second apparatus in the ring network, the first control frame through a third port, when the communication failure does not occur at a side of a fourth port different from the third port: storing information of the second apparatus in the first control frame; and transmitting the first control frame through the fourth port; and when the communication failure occurs at the side of the fourth port, determining whether a data frame flowing into the ring network is affected by the communication failure for every VLAN (virtual local area network) based on the first control frame; and switching a communication path set in an affected VLAN.Type: GrantFiled: February 27, 2014Date of Patent: November 29, 2016Assignee: FUJITSU LIMITEDInventor: Seiji Meki
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Publication number: 20150270894Abstract: A relay method includes transmitting, by a first apparatus in a ring network, a first control frame in which information of the first apparatus is stored, through a first port different from a second port where a communication failure is detected; receiving, by a second apparatus in the ring network, the first control frame through a third port, when the communication failure does not occur at a side of a fourth port different from the third port: storing information of the second apparatus in the first control frame; and transmitting the first control frame through the fourth port; and when the communication failure occurs at the side of the fourth port, determining whether a data frame flowing into the ring network is affected by the communication failure for every VLAN (virtual local area network) based on the first control frame; and switching a communication path set in an affected VLAN.Type: ApplicationFiled: February 27, 2014Publication date: September 24, 2015Applicant: FUJITSU LIMITEDInventor: Seiji Meki
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Information transmission device, information transmission system and information transmission method
Patent number: 9001646Abstract: An information transmission device includes: ring-ports; an access-port; a communication-path-setting unit to facilitate or cut off communication of the ring-ports or the access-port, based on a communication setting determined such that communication paths having priority levels and assigned with same identifiers have different sections; a control-signal-transmission unit, when a communication failure occurs between one ring-port and another information transmission device, to transmit, from another ring-port, a first control signal for instructing a cutoff of communication of the access-port in the communication path having a low priority level, and transmit a second control signal for instructing a facilitation of communication of the ring-ports; an access-port-control unit, upon receiving the first control signal, to cut off the communication of the access-port in the communication path having the low priority level; and a ring-port-control unit, upon receiving the second control signal, to facilitate comType: GrantFiled: January 30, 2013Date of Patent: April 7, 2015Assignee: Fujitsu LimitedInventor: Seiji Meki -
INFORMATION TRANSMISSION DEVICE, INFORMATION TRANSMISSION SYSTEM AND INFORMATION TRANSMISSION METHOD
Publication number: 20130242722Abstract: An information transmission device includes: ring-ports; an access-port; a communication-path-setting unit to facilitate or cut off communication of the ring-ports or the access-port, based on a communication setting determined such that communication paths having priority levels and assigned with same identifiers have different sections; a control-signal-transmission unit, when a communication failure occurs between one ring-port and another information transmission device, to transmit, from another ring-port, a first control signal for instructing a cutoff of communication of the access-port in the communication path having a low priority level, and transmit a second control signal for instructing a facilitation of communication of the ring-ports; an access-port-control unit, upon receiving the first control signal, to cut off the communication of the access-port in the communication path having the low priority level; and a ring-port-control unit, upon receiving the second control signal, to facilitate comType: ApplicationFiled: January 30, 2013Publication date: September 19, 2013Applicant: FUJITSU LIMITEDInventor: Seiji MEKI -
Patent number: 8325597Abstract: A bridge apparatus creates, transmits and circulates pass checking frames having virtual network identifiers in a ring network, and collects a passing/non-passing state of each virtual network identifier. The bridge apparatus creates, transmits and circulates a usage state checking frame in the ring network, and collects a used/unused state of the virtual network identifier of each bridge apparatus. The bridge apparatus creates, transmits and circulates a connection changing frame to change the virtual network identifier having the used state and the non-passing state into the virtual network identifier having the unused state and the passing state. Each bridge apparatus changes the virtual network identifier having the used state and the non-passing state into the virtual network identifier having the unused state and the passing state.Type: GrantFiled: December 16, 2009Date of Patent: December 4, 2012Assignee: Fujitsu LimitedInventor: Seiji Meki
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Patent number: 7805074Abstract: The invention relates to a package starting control device determining a moment and a sequence of starting a package corresponding to an individual wavelength to be wavelength-division-multiplexed in a wavelength division multiplex transmission device. An object of the invention is to provide a package starting control device capable of effectively increasing or decreasing the number of wavelengths at low cost without changing a basic structure drastically.Type: GrantFiled: January 28, 2005Date of Patent: September 28, 2010Assignee: Fujitsu LimitedInventors: Takashi Yasuda, Satoshi Yasutaka, Seiji Meki, Tomonori Gotoh
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Publication number: 20100158025Abstract: A bridge apparatus creates, transmits and circulates pass checking frames having virtual network identifiers in a ring network, and collects a passing/non-passing state of each virtual network identifier. The bridge apparatus creates, transmits and circulates a usage state checking frame in the ring network, and collects a used/unused state of the virtual network identifier of each bridge apparatus. The bridge apparatus creates, transmits and circulates a connection changing frame to change the virtual network identifier having the used state and the non-passing state into the virtual network identifier having the unused state and the passing state. Each bridge apparatus changes the virtual network identifier having the used state and the non-passing state into the virtual network identifier having the unused state and the passing state.Type: ApplicationFiled: December 16, 2009Publication date: June 24, 2010Applicant: FUJITSU LIMITEDInventor: Seiji MEKI
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Publication number: 20060067687Abstract: The invention relates to a package starting control device determining a moment and a sequence of starting a package corresponding to an individual wavelength to be wavelength-division-multiplexed in a wavelength division multiplex transmission device. An object of the invention is to provide a package starting control device capable of effectively increasing or decreasing the number of wavelengths at low cost without changing a basic structure drastically.Type: ApplicationFiled: January 28, 2005Publication date: March 30, 2006Inventors: Takashi Yasuda, Satoshi Yasutaka, Seiji Meki, Tomonori Gotoh
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Patent number: 6041066Abstract: A transmission apparatus has units to which main signals are input for subjecting these main signals to predetermined processing and then transmitting them. One of these units is a master unit and the others are slave units and they are interconnected by a clock cable and processor-to-processor cable. Each slave unit detects a synchronization status message that has been inserted into a main signal input from a line and notifies the main unit of this synchronization status message via the processor-to-processor cable. Using synchronization status messages acquired from the slave units and a synchronization status message that has been inserted into a main signal input thereto, the main unit obtains the synchronization status message indicative of the best quality level and adopts, as a master clock, a clock extracted from the main signal into which this synchronization status message has been inserted.Type: GrantFiled: February 12, 1998Date of Patent: March 21, 2000Assignee: Fujitsu LimitedInventors: Seiji Meki, Shunji Yamada, Junichi Moriyama