Patents by Inventor Masaharu Kako
Masaharu Kako 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).
-
Publication number: 20180013305Abstract: A power management apparatus configured to control charge and discharge of the battery, power discharged from the battery being supplied to a power consumption apparatus, the power management apparatus includes a memory, and a processor coupled to the memory and configured to receive, from the power consumption apparatus, first information indicating a first power amount which is predicted to be used in the power consumption apparatus, determine, based on the first power amount, a first value that is a value regarding a residual amount of the battery and is used for determining which of the charge and the discharge of the battery is to be preferentially executed, and control, based on the determined first value and the residual amount of the battery, the charge and the discharge of the battery.Type: ApplicationFiled: May 2, 2017Publication date: January 11, 2018Applicant: FUJITSU LIMITEDInventor: Masaharu KAKO
-
Publication number: 20170264507Abstract: A communication method includes storing, by a communication device, generation log information in which a period of time and an identifier are associated with each other; when another communication device is detected, transmitting, to the another communication device, a combination of a time at which the another communication device is detected and an identifier of the communication device extracted from the generation log information; when a combination of a time at which the communication device is detected and an identifier of the another communication device, is received from the another communication device, storing the combination as reception log information; determining whether an identifier related to the communication device is included in the reception log information stored in a target communication device; and identifying the communication device as a device related to the target communication device when it is determined that the identifier is included in the reception log information.Type: ApplicationFiled: January 26, 2017Publication date: September 14, 2017Inventor: Masaharu KAKO
-
Patent number: 9615298Abstract: An off-load apparatus is disposed between a core network accommodating base stations and the base stations capable of connection with a mobile station. The off-load apparatus includes a storage unit that stores line information and multicast viewing information of the mobile station when the mobile station performs multicast communication of an off-load object via the off-load apparatus; a transferring unit that transfers the line information and the multicast viewing information of the mobile station to another off-load apparatus that is an handover destination when the mobile station moves during the multicast communication; and a control unit that executes a process of participating in multicast viewing on behalf of the mobile station when the off-load apparatus acts as a handover-destination apparatus, based on the multicast viewing information transferred from a handover-source off-load apparatus.Type: GrantFiled: April 9, 2013Date of Patent: April 4, 2017Assignee: FUJITSU LIMITEDInventors: Satoshi Maehara, Masaharu Kako
-
Patent number: 9560058Abstract: A monitoring device to operate as a first monitoring device in a network including communication devices and monitoring devices, the monitoring device includes: an acquisition unit to acquire information of packets transmitted or received by a first communication device monitored by the first monitoring device; a transmission unit to transmit a first join request message to a first multicast group in which a second monitoring device performs notification of communication information of a second communication device monitored by the second monitoring device, when the first communication device communicates with the second communication device, after the first communication device communicates with an external device not included in the network; and a determination unit to determine whether the external device is performing unauthorized access to the second communication device via the first communication device, based on packets transmitted from the second monitoring device to the first multicast group.Type: GrantFiled: May 27, 2015Date of Patent: January 31, 2017Assignee: FUJITSU LIMITEDInventor: Masaharu Kako
-
Patent number: 9350551Abstract: A validity determination method includes having a receiving apparatus of electronic data identify a public key corresponding to an electronic signature attached to the received electronic data among one or more public keys having respective valid terms, send a resend-request of the electronic data if the identified public key is not valid, and determine validity of the electronic data based on whether the electronic data is resent in response to the resend-request; and having a sending apparatus of the electronic data resend the electronic data to the receiving apparatus in response to receiving the resend-request if the sending apparatus has sent the electronic data relevant to the resend-request in a past.Type: GrantFiled: December 11, 2013Date of Patent: May 24, 2016Assignee: FUJITSU LIMITEDInventor: Masaharu Kako
-
Patent number: 9301199Abstract: A network system including: a first and second radio base station apparatuses which are connectable with a mobile station apparatus; a first network which accommodates the first and second radio base station apparatuses; a first offload apparatus which relays packet data, and transmits to a second network a portion of packet data transmitted from the first radio base station apparatus after rewriting a first address of the mobile station apparatus with a second address, or transmits to the first radio base station apparatus packet data received from the second network after rewriting the second address with the first address; and a second offload apparatus, wherein the first offload apparatus includes a first control unit which transmits the second address to the second offload apparatus, and the second offload apparatus includes a second control unit which receives the second address.Type: GrantFiled: November 19, 2013Date of Patent: March 29, 2016Assignee: FUJITSU LIMITEDInventors: Satoshi Maehara, Masaharu Kako
-
Publication number: 20160006692Abstract: A monitoring device to operate as a first monitoring device in a network including communication devices and monitoring devices, the monitoring device includes: an acquisition unit to acquire information of packets transmitted or received by a first communication device monitored by the first monitoring device; a transmission unit to transmit a first join request message to a first multicast group in which a second monitoring device performs notification of communication information of a second communication device monitored by the second monitoring device, when the first communication device communicates with the second communication device, after the first communication device communicates with an external device not included in the network; and a determination unit to determine whether the external device is performing unauthorized access to the second communication device via the first communication device, based on packets transmitted from the second monitoring device to the first multicast group.Type: ApplicationFiled: May 27, 2015Publication date: January 7, 2016Inventor: Masaharu KAKO
-
Patent number: 9191856Abstract: A network system includes: a plurality of base stations, each with which a mobile station communicates; a core network to include the plurality of base stations; and a plurality of offload devices, each being arranged between the base station and a node device included in the core network, each to serve as the node device of an anchor point at which traffic to be offloaded is transmitted/received to/from an offload network, and each to serve as the node device of a relay point at which the traffic to be offloaded is relayed between the anchor point and one of the plurality of base stations with which the mobile station is communicating.Type: GrantFiled: December 3, 2012Date of Patent: November 17, 2015Assignee: FUJITSU LIMITEDInventors: Satoshi Maehara, Masaharu Kako
-
Publication number: 20150120074Abstract: A power management device includes a processor that executes a procedure. The procedure includes: gradually increasing a power-equivalent value that is equivalent to an amount of permitted power consumption by a plurality of power consuming appliances and that is accumulated in a management accumulation section; and according to requests from each of the plurality of power consuming appliances, allocating the power-equivalent value accumulated in the management accumulation section to each of the plurality of power consuming appliances within a range such that the power-equivalent value does not become a predetermined limit value or lower.Type: ApplicationFiled: September 15, 2014Publication date: April 30, 2015Applicant: FUJITSU LIMITEDInventor: Masaharu KAKO
-
Publication number: 20140365557Abstract: An information processing device including: a first storage unit that stores content; a second storage unit that stores session information including a home address and a care-of address of a mobile terminal, a home address of a virtual proxy, distribution content, and a state of the session; and a processing unit that updates, when a location registration request is received from a mobile terminal that is establishing a session, session information based on the location registration request, searches for an information processing device located near the mobile terminal, and notifies the detected information processing device of the session information and that transmits, when session information related to a mobile terminal that is establishing a session with another information processing device is received, to the mobile terminal, a location registration request including an address of the virtual proxy and distributes content included in the session information.Type: ApplicationFiled: May 6, 2014Publication date: December 11, 2014Applicant: FUJITSU LIMITEDInventors: Satoshi Maehara, Masaharu KAKO
-
Patent number: 8855649Abstract: A network system includes: a plurality of base stations, each with which a mobile station communicates; a core network to include one or more gateways, each with which the plurality of base stations communicates; a plurality of offload devices, each arranged between the base station and the gateway, each to serve as the gateway of an anchor point at which traffic to be offloaded is transmitted to or received from an offload network, and each to serve as the gateway of a relay point at which the traffic to be offloaded is relayed between the anchor point and one of the plurality of base stations with which the mobile station is communicating; a control station to control the traffic between the mobile station and the gateway; and one or more interception devices, each to intercept the traffic between the control station and the gateway.Type: GrantFiled: December 3, 2012Date of Patent: October 7, 2014Assignee: Fujitsu LimitedInventors: Satoshi Maehara, Masaharu Kako
-
Publication number: 20140293779Abstract: A first route selecting apparatus that is included among a plurality of route selecting apparatuses includes an acquiring unit that acquires for handover of communication currently relayed by the first route selecting apparatus, a selection state of a relay route of a second route selecting apparatus that is included among the route selecting apparatuses that each selects from among a first route and a second route, a relay route between a mobile terminal and a communication destination, and that when a traffic amount of the first route becomes at least a predetermined amount, selects the second route for communication established for a communication request issued thereafter; and a selecting unit that according to the acquired selection state, selects the second route for the currently relayed communication even when the traffic amount of the first route is less than the predetermined amount.Type: ApplicationFiled: January 29, 2014Publication date: October 2, 2014Applicant: FUJITSU LIMITEDInventors: Masaharu KAKO, Satoshi Maehara
-
Publication number: 20140289532Abstract: A validity determination method includes having a receiving apparatus of electronic data identify a public key corresponding to an electronic signature attached to the received electronic data among one or more public keys having respective valid terms, send a resend-request of the electronic data if the identified public key is not valid, and determine validity of the electronic data based on whether the electronic data is resent in response to the resend-request; and having a sending apparatus of the electronic data resend the electronic data to the receiving apparatus in response to receiving the resend-request if the sending apparatus has sent the electronic data relevant to the resend-request in a past.Type: ApplicationFiled: December 11, 2013Publication date: September 25, 2014Applicant: FUJITSU LIMITEDInventor: Masaharu KAKO
-
Publication number: 20140160940Abstract: A network system including: a first and second radio base station apparatuses which are connectable with a mobile station apparatus; a first network which accommodates the first and second radio base station apparatuses; a first offload apparatus which relays packet data, and transmits to a second network a portion of packet data transmitted from the first radio base station apparatus after rewriting a first address of the mobile station apparatus with a second address, or transmits to the first radio base station apparatus packet data received from the second network after rewriting the second address with the first address; and a second offload apparatus, wherein the first offload apparatus includes a first control unit which transmits the second address to the second offload apparatus, and the second offload apparatus includes a second control unit which receives the second address.Type: ApplicationFiled: November 19, 2013Publication date: June 12, 2014Applicant: FUJITSU LIMITEDInventors: Satoshi MAEHARA, Masaharu KAKO
-
Publication number: 20140029501Abstract: An off-load apparatus is disposed between a core network accommodating base stations and the base stations capable of connection with a mobile station. The off-load apparatus includes a storage unit that stores line information and multicast viewing information of the mobile station when the mobile station performs multicast communication of an off-load object via the off-load apparatus; a transferring unit that transfers the line information and the multicast viewing information of the mobile station to another off-load apparatus that is an handover destination when the mobile station moves during the multicast communication; and a control unit that executes a process of participating in multicast viewing on behalf of the mobile station when the off-load apparatus acts as a handover-destination apparatus, based on the multicast viewing information transferred from a handover-source off-load apparatus.Type: ApplicationFiled: April 9, 2013Publication date: January 30, 2014Applicant: FUJITSU LIMITEDInventors: Satoshi Maehara, Masaharu Kako
-
Patent number: 8306065Abstract: A distribution apparatus includes a packet divider which divides contents data into multiple contents data and packetizing each of the divided contents data to generate a transfer packet. A priority degree setter assigns a phase to each transfer packet generated by the packet divider according to each position in contents data and sets, for each transfer packet to which the phase has been assigned, a priority degree indicating the degree of priority of being transmitted to a transmission destination. A packet transmitter transmits the transfer packets to which the priority degrees have been set by the priority degree setter, beginning with the top of the contents data. A phase controller, when one round of transmission of all the transfer packets by the packet transmitter ends, performs control so that the phase assigned to each of the transfer packets is changed.Type: GrantFiled: September 29, 2009Date of Patent: November 6, 2012Assignee: Fujitsu LimitedInventor: Masaharu Kako
-
Publication number: 20110191404Abstract: An SIP server determines whether the number of increased audiences is a switching from unicast to multicast “(U2M) threshold value”, stored in a connection threshold value storing unit, or more in a case where a viewing request is received from a viewing device and determines whether the number of decreased audiences is less than an “M2U threshold value” when a viewing end is received from a viewing device. As a result, multicast transmission is controlled to be performed in a case where the number of delivery requests is determined to be the “U2M threshold value” or more, and unicast transmission is controlled to be performed in a case where the number of delivery requests is less than the “M2U threshold value”.Type: ApplicationFiled: April 13, 2011Publication date: August 4, 2011Applicant: FUJITSU LIMITEDInventor: Masaharu Kako
-
Publication number: 20110158412Abstract: An information tray creation apparatus generates a pair of an encryption key and a decoding key, encrypts disclosure information using the encryption key, and generates encrypted disclosure information. Next, the information tray creation apparatus encrypts a decoding key using a public key of a disclosure destination, and generates decoding key information. The information tray creation apparatus adds a pair of the disclosure destination and the decoding key information to disclosure destination information in an information tray as one record. The information tray creation apparatus then adds pairs of disclosure destinations and decoding key information to the disclosure destination information in the information tray for all information destinations.Type: ApplicationFiled: March 4, 2011Publication date: June 30, 2011Applicant: FUJITSU LIMITEDInventor: Masaharu Kako
-
Publication number: 20100103932Abstract: A distribution apparatus includes a packet divider which divides contents data into multiple contents data and packetizing each of the divided contents data to generate a transfer packet. A priority degree setter assigns a phase to each transfer packet generated by the packet divider according to each position in contents data and sets, for each transfer packet to which the phase has been assigned, a priority degree indicating the degree of priority of being transmitted to a transmission destination. A packet transmitter transmits the transfer packets to which the priority degrees have been set by the priority degree setter, beginning with the top of the contents data. A phase controller, when one round of transmission of all the transfer packets by the packet transmitter ends, performs control so that the phase assigned to each of the transfer packets is changed.Type: ApplicationFiled: September 29, 2009Publication date: April 29, 2010Applicant: FUJITSU LIMITEDInventor: Masaharu KAKO
-
Publication number: 20060104218Abstract: A system for analyzing quality of communication sections includes a transmission device transmitting a test measurement signal, a reception device receiving the test measurement signal, relay devices each located on a transmission path of the test measurement signal between the transmission device and the reception device, setting a relay time in the test measurement signal when relaying the test measurement signal toward the reception device, and an analysis device including a reception unit receiving two or more relay time measurement results of the relay devices, each of which is obtained by the reception device when transmission/reception of the test measurement signal is performed two or more times by the transmission device and the reception device, a calculation unit calculating a quality index value of a communication section between the relay devices based on the relay time measurement results, and an output unit outputting the communication quality index value of the communication section.Type: ApplicationFiled: December 29, 2005Publication date: May 18, 2006Inventor: Masaharu Kako