Abstract: In the terminals of the first electrical connector, the elastic arm portions are formed such that their width dimensions in the array direction of the above-mentioned terminals are smaller than the securing arm portions; in the terminals of the second electrical connector, the sections that correspond to the securing arm portions are formed such that their width dimensions are smaller than the sections that correspond to the elastic arm portions; on the elastic arm portions side, the terminals of the first electrical connector are formed such that their width dimensions are smaller than the terminals of the second electrical connector; and on the securing arm portions side, the terminals of the second electrical connector are formed such that their width dimensions are smaller than the terminals of the first electrical connector.

Abstract: To provide an electrical connector for circuit boards having lock fittings designed to reliably prevent damage to lock portions and inadvertent removal of mating connectors. The lock fittings have lock plate portions that extend along the inner surface of the lateral walls of the housing and are retained in place on said lateral walls, or which extend along the inner surface of the end walls and are retained in place on said end walls; upright face-reinforcing plate portions that extend along the upright faces of the protruding wall of the housing facing said lock plate portions and are retained in place on said protruding wall; and connecting bottom portions that extend along the bottom wall and connect the bottom wall-adjacent end portions of the lock plate portions and the upright face-reinforcing plate portions.

Abstract: A communication system includes a communication control apparatus that establishes a communication path between terminals and notifies at least one of the terminals of information about the established communication path. The terminal that has received the notification from the communication control apparatus establishes a communication protocol to be used for communication between the terminals on the basis of the information from the communication control apparatus.

Abstract: A communication system includes: a plurality of nodes each of which is configured to include OAM (Operation Administration and Maintenance) functions; and a control apparatus configured to control the plurality of nodes. Each of the nodes transmits a status change notification including information about a port(s) affected by a failure(s) that has occurred in a network composed by the plurality of nodes to the control apparatus. The control apparatus determines whether to perform route control on the network on the basis of the status change notification and information about a composition of the network.

Abstract: A communication system includes a control apparatus that controls communication apparatus(s) included in a hierarchical network, and a first communication apparatus that forms links in a first layer of the network and performs processing related to communication flows based on a first packet handling operation. The control apparatus determines destinations to accommodate communication flows specified according to the first packet handling operation, based on information related to a second layer that differs from the first layer.

Abstract: A control apparatus controls a hierarchized network and generates a topology in a second layer different from a first layer based on an operation policy for the network and paths in the first layer of the network.

Abstract: A high-speed communication system according to the present invention includes: a plurality of nodes disposed on a communication path; and a plurality of communication connections established between the plurality of nodes. The plurality of nodes exchange a plurality of pieces of performance model information between the nodes, the plurality of pieces of performance model information representing communication performances achievable by each of the plurality of communication connections. Each of the plurality of nodes executes communication control based on any one of the plurality of pieces of performance model information.

Abstract: A control apparatus is connected to the network and includes: a switch control unit controlling the second switch; a path examination unit determining whether communication from an arbitrary source connected to the network uses a plurality of paths; and an erroneous learning prevention processing unit executing, when a merging point of the plurality of paths is the first switch, a predetermined erroneous learning prevention process. Occurrence of a loop or route flapping is prevented in a network environment including both a switch having an address learning function and a switch without such function.

Abstract: An electrical connector assembled component includes a plug connector and a receptacle connector. The receptacle connector includes a plurality of mating terminals having receptacle contact portions and a receptacle housing. The plug connector includes a plurality of terminals having plug contact portions and a plug housing. The plug housing includes a fitting portion. The terminals include an edge terminal disposed on one end portion of the fitting portion. The edge terminal includes a plug side plate portion, a plug edge plate portion, and a locking portion. The mating terminals include an edge mating terminal disposed on one end portion of the receptacle housing. The edge mating terminal includes a receptacle side plate portion, a receptacle edge plate portion, and a locked portion formed on the receptacle edge plate portion for engaging with the locking portion.

Abstract: A network environment capable of performing a smooth and comfortable TCP session operation is provided to a user. The session relay equipment includes a bridge portion which relays a session by which a sequence of packets are transmitted and received between terminals connected with each other via a network; a socket information table which has socket information containing (1) address information of the terminal and (2) protocol information used in the session, the socket information being associated with information on whether or not the session is to be terminated; and a service information table which has information on a communication service to be provided for each service provision unit, the communication service being identified based on predetermined information within a header of the packet. The bridge portion terminates the session and executes a communication service based on the information contained in the header of the packet and the socket information.

Abstract: According to an embodiment, a memory system includes multiple nonvolatile memories to/from each of which data can be written/read independently of one another; and a controller configured to control writing of data to and reading of data from the nonvolatile memories. Each of the nonvolatile memories includes a data storage including a normal data storage area for storing the data and a redundant data storage area for writing the data avoiding defect positions in the normal data storage area; and a defect information storage configured to store defect information indicating information on a defect of the data storage included in another nonvolatile memory different from the present nonvolatile memory.

Abstract: A communication system includes a data sending terminal which sends data and a data receiving terminal which sends an acknowledgement, which indicates that the data is received, to the data sending terminal in reply to receiving the data, and the data receiving terminal includes a unit which judges whether it is necessary to resend the acknowledgement on the basis of judgment whether the data receiving terminal receives new data from the data sending terminal within a predetermined time since sending the acknowledgement.

Abstract: A topology detection apparatus includes, in a network having a tree-type topology: a route overlap judgment part that judges an existence or non-existence of an overlap between: a first route between terminals whose connection position are known; and a second route between a terminal whose connection position is known and a terminal whose connection position is unknown; and a topology detection part which determines the network topology based on the existence or non-existence of the first route and the second route.

Abstract: Even in a network system including a transmission line of which dominant cause of delay is a transmission line delay, controlling communication speed of the network system as a whole efficiently and suppressing the delay is made possible.

Abstract: A semiconductor device performs operation in synchronization with a certain clock signal. The semiconductor device includes a control unit for outputting operation control information, a storage unit for storing data, a first operation unit for performing operation on first data in accordance with first operation control information, and a second operation unit for performing operation on second data in accordance with second operation control information. The first operation unit includes a plurality of operation circuits. The number of logic gates constituting the entire operation circuits is m. The second operation unit includes at least one operation circuit in which the number of logic gates is n (n>m). Each of the total delay of the operation unit or the total delay of the operation unit is set at a value equal to or less than the cycle of the clock signal.

Abstract: An electrical connector assembled component includes a plug connector and a receptacle connector. The receptacle connector includes a plurality of mating terminals having receptacle contact portions and a receptacle housing. The plug connector includes a plurality of terminals having plug contact portions and a plug housing. The plug housing includes a fitting portion. The terminals include an edge terminal disposed on one end portion of the fitting portion. The edge terminal includes a plug side plate portion, a plug edge plate portion, and a locking portion. The mating terminals include an edge mating terminal disposed on one end portion of the receptacle housing. The edge mating terminal includes a receptacle side plate portion, a receptacle edge plate portion, and a locked portion formed on the receptacle edge plate portion for engaging with the locking portion.

Abstract: An electrical connector includes a housing and a plurality of terminals. Each of the terminals is formed of a sheet metal and held by the housing. Each of the terminals has a contact section to contact with a mating terminal and a connecting section to be connected to a circuit board each forming a continuous flat sheet surface. The contact section has a contact surface that slidably contacts with the mating terminal so as to extend in a connector fitting direction, and the plurality of terminals is arranged so that adjacent terminals have the contact surfaces parallel to each other.

Abstract: An electrical connector includes a housing and terminals made of a sheet metal, which are held by the housing. The plurality of terminals is arranged in a direction perpendicular to a contact surface of a contact section thereof, and is held by the housing. Each of the terminals has a held section to be held by the housing, a contact section to contact with a mating terminal, and a connecting section to be connected to a circuit board each forming a flat sheet surface. The contact section is formed to have a flat contact surface, which slidably contacts with the mating terminal and extends in a connector fitting direction.

Abstract: A high-speed communication system according to the present invention includes: a plurality of nodes disposed on a communication path; and a plurality of communication connections established between the plurality of nodes. The plurality of nodes exchange a plurality of pieces of performance model information between the nodes, the plurality of pieces of performance model information representing communication performances achievable by each of the plurality of communication connections. Each of the plurality of nodes executes communication control based on any one of the plurality of pieces of performance model information.

Abstract: Even in a network system including a transmission line of which dominant cause of delay is a transmission line delay, controlling communication speed of the network system as a whole efficiently and suppressing the delay is made possible.