Abstract: The present application provides a method of controlling an EV charger which is located at a charging site by a controller. The controller provides a charging signal thereto for controlling the EV charger to operate within a threshold power that is allowable at a management site. The method comprising receiving a consumption power reading used in the management site, and controlling a charging power to the EV charger so that the consumption power is less than the maximum consumption power.

Abstract: A power rate calculation method for used in a facility that has the plurality of privately-used areas and a common area, one or more power generators are installed in the common area, includes: obtaining a plurality of first power amounts consumed by each of the privately-used areas, detecting whether or not a second power amount generated by the one or more power generators is larger than or equal to a third power amount consumed by both of the plurality of privately-used areas and the common area; and calculating the power rates from the plurality of first power amounts by applying a first rate structure when the second power amount is larger than or equal to the third power amount and by applying a second rate structure that is different from the first rate structure when the second power amount is smaller than the third power amount.

Abstract: The present invention provides a gateway device releasing information and service information of an appliance to an appliance connected to a network having a different protocol. The gateway device includes a device description creation processing unit, a device description template holding unit, a service description creation processing unit, and a service description template holding unit. The service description creation processing unit categorizes services and attributes that each appliance can provide into property types, which are control models, and based on a rule defined for each property type, a service information description, which is information to be released, is automatically created.

Abstract: When a common key is updated to a new common key, it is possible to prevent the generation of a period during which not all the general communication apparatuses are enabled to make mutual communications using encrypted data while at the same time reducing the memory consumption of the general communication apparatus. A common key control apparatus 11 transmits a first status transition request R1 to all the general communication apparatuses when all the general communication apparatuses 12 made a transition to a distribution completed status, and transmits a second status transition request R2 to all the general communication apparatuses when all the general communication apparatuses 12 made a transition to an in-transit status.

Abstract: An Internet terminal comprising: a communication unit that sends a local packet generated by a packet generation unit and receives a response local packet from a server apparatus; an encryption processing unit that encrypts the local packet to be sent out and decrypts the received response local packet; the packet generation unit that generates the local packet; a polling information storage unit that holds a terminal ID and a password used for identifying the internet terminal; a polling interval adjustment unit that identifies a polling interval at which the local packet is periodically sent to the router; and a control unit that sends control information to a terminal apparatus to be controlled and controls such terminal apparatus accordingly.

Abstract: One routing device which connects plural networks on which a plurality of other routing devices, including a parent router, are connected. The parent router manages network identification data to identify the plural networks. Master router data is included for each corresponding other routing device. Master router data includes master router identification data identifying whether the corresponding other routing device is a “master router” located on a path to the parent router or a “slave router” which is a routing device other than the master router, and includes network identification data identifying a network to which the corresponding other routing device connects. Upon startup of the one routing device, the master router data is acquired from the other routing devices on the networks to which the one routing device connects. It is determined whether a router function of the one routing device is enabled based on the acquired master router data.

Abstract: A communication system is constructed in such a manner that a user is allowed to designate a controller 1 and a wireless device 3 simultaneously to start authentication for connection with a wireless base station 2 to specify the device to be connected, and to establish connection authentication without a password for the first time. Thereafter, the controller 1 distributes a password to the wireless base station 2 and to the wireless device 3 to cancel the connection authentication. Next, connection authentication with the distributed password is established. Thus, the communication system makes it possible to substantially automatically establish connection authentication, thereby eliminating a cumbersome operation by the user in implementing the connection authentication process.

Abstract: The communication system according to the present invention is made up of: a connected communication terminal (1) to which communication is requested; a connecting communication terminal (3) that requests a communication with the connected communication terminal (1); a session management server (4) that manages sessions between the communication terminals; a trigger server (5) that transmits, to the connected communication server (1), the request made by the session management server (4); and routers (6 and 7) that relay between the connecting communication terminal (3) and the connected communication terminal (1), and a network (2).

Abstract: An internet terminal, which includes a communication unit for sending and receiving packet data, an encryption unit for encrypting and decrypting packet data, a packet generation unit for generating packet data to be sent to a server apparatus, a protocol determination unit for determining a communication protocol to be used between the internet terminal and the server apparatus, a control request reading unit for reading in packet data and a control request packet that includes a control request, a control unit for receiving control information and controlling the internet terminal or a terminal apparatus accordingly. Further, the internet terminal includes a server certificate authentication unit for authenticating the validity of a server certificate sent by the server apparatus, a client certificate management unit for sending a client certificate to the server apparatus, and a storage unit for storing a terminal ID and other information.

Abstract: The present invention aims to provide a gateway device in order to release information and service information of an appliance to an appliance connected to a network having a different protocol. The gateway device (11) includes a device description creation processing unit (24), a device description template holding unit (25), a service description creation processing unit (26), and a service description template holding unit (27). The service description creation processing unit (26) categorizes services and attributes which each appliance can provide into property types which are control models, and based on a rule defined for each property type, a service information description that is information to be released is automatically created.

Abstract: A communication system in which both a communication device that does not operate intermittently and a communication device that operates intermittently are present. A communication device includes a transmission processing portion transmitting data, a timer portion counting a continuous operation request effective time during which transmitted data is always received, a transmission control portion controlling the transmission processing portion to transmit data including a continuous operation request flag causing the timer portion in a communication device that operates intermittently to start counting the continuous operation request effective time while starting its timer portion counting the continuous operation request effective time, a reception processing portion, and a reception control portion controlling the reception processing portion.

Abstract: A network system comprising routers and a plurality of sub-networks, each of which connects apparatuses, wherein the plurality of sub-networks are identified by respective Net IDs, and are connected via the routers to form a tree structure. Each of the routers includes: first and second communication interface units that connect multiple sub-networks; a router data storage unit that holds router data including the Net IDs of the respective sub-networks that are connected; and a control unit that performs a cold start, which is a start-up process involving an update of the router data stored in the router data storage unit, wherein the control unit, when performing the cold start, causes each of the routers connected to downstream sub-networks to perform a cold start.

Abstract: The invention provides a router device, a communication device, a routing method, a routing program, and a computer-readable recording medium recorded with the routing program that enable to improve communication efficiency. The communication data receiving section 10 receives communication data from the high-speed transmission medium 2. The communication data storage 11 stores the received communication data therein. The communication data sending section 12 sends the communication data to the low-speed transmission medium 3. The communication data temporal storage 13 temporarily stores the communication data sent from the communication data sending section 12 therein. The destination comparing section 14 compares the destination of the communication data stored in the communication data storage 11 with the destination of the communication data stored in the communication data temporal storage 13.

Abstract: The present invention provides a communication network system in which communication can be securely performed via a global network from an existing terminal apparatus to an existing device connected to a local network without needing a special gateway function in a router and without performing a special setting in the router. In the communication network system (10), a communication relay client (202) performs polling on a management center network (1) via a NAT router (204); a communication relay server (102) converts a packet transmitted from a management terminal (101); and the communication relay client (202) receives the converted packet as a response to the polling via the NAT router (204) from the side of the management center network (1). The communication relay client (202) converts the converted packet to the original packet, and transmits the original packet to a device to be managed (201).

Abstract: In a communication system in which both a communication device that does not operate intermittently and a communication device that operates intermittently are present, high-speed communications between the communication devices are enabled while achieving power saving in the communication device that operates intermittently.

Abstract: The communication system according to the present invention is made up of: a connected communication terminal (1) to which communication is requested; a connecting communication terminal (3) that requests a communication with the connected communication terminal (1); a session management server (4) that manages sessions between the communication terminals; a trigger server (5) that transmits, to the connected communication server (1), the request made by the session management server (4); and routers (6 and 7) that relay between the connecting communication terminal (3) and the connected communication terminal (1), and a network (2).

Abstract: When a common key is updated to a new common key, it is possible to prevent the generation of a period during which not all the general communication apparatuses are enabled to make mutual communications using encrypted data while at the same time reducing the memory consumption of the general communication apparatus. A common key control apparatus 11 transmits a first status transition request R1 to all the general communication apparatuses when all the general communication apparatuses 12 made a transition to a distribution completed status, and transmits a second status transition request R2 to all the general communication apparatuses when all the general communication apparatuses 12 made a transition to an in-transit status.

Abstract: A communications setting method for a communications network system for performing data communications among a plurality of devices through power line has a house code notification including a house code to be uniquely set for the communications network system is transmitted from a first device in the communications network system to a second device in the communications network system more than once in a first predetermined time period.

Abstract: An internet terminal (110), which is a home terminal apparatus, is comprised of: a communication unit (111) for sending and receiving packet data; an encryption unit (112) for encrypting and decrypting packet data; a packet generation unit (113) for generating packet data to be sent to a server apparatus (200); a protocol determination unit (114) for determining a communication protocol to be used between the internet terminal (110) and the server apparatus (200); a control request reading unit (115) for reading in packet data and a control request packet that includes a control request; a control unit (116) for receiving control information and controlling the internet terminal (110) or a terminal apparatus (103) accordingly; a server certificate authentication unit (117) for authenticating the validity of a server certificate sent by the server apparatus (200); a client certificate management unit (118) for sending a client certificate to the server apparatus (200); and a storage unit (119) for storing a te

Abstract: An internet terminal (110) according to the present invention is comprised of: a communication unit (111) that sends a local packet generated by a packet generation unit (113) and receives a response local packet from a server apparatus (200); an encryption processing unit (112) that encrypts the local packet to be sent out and decrypts the received response local packet; the packet generation unit (113) that generates the local packet; a polling information storage unit (114) that holds a terminal ID and a password used for identifying the internet terminal (110); a polling interval adjustment unit (115) that identifies a polling interval at which the local packet is periodically sent to the router (101); and a control unit (116) that sends control information to a terminal apparatus to be controlled and controls such terminal apparatus accordingly.