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| 20090300182 | COMPUTER-READABLE STORAGE MEDIUM STORING EVENT CONTROL PROGRAM, EVENT CONTROL METHOD, AND EVENT CONTROLLER - An event controller is caused to function as a receiving unit, a request unit, and a transfer unit. The receiving unit receives an event notification request containing designation information designating a client. The request unit requests notification of one of a plurality of servers as an assignment destination server, based on the designation information, the one providing a service to the client identified by the designation information. The transfer unit transfers the event notification request to the assignment destination server notified in response to the request by the request unit. | 12-03-2009 |
| 20100002605 | RELAY NODE - A relay node comprising a reception station for receiving a route trace control message including routing information on a path used for data transfer from a starting node to a terminal node from the preceding node on the path, an editing section for, if the home node is boundary node located at the boundary of a routing information shielding section on the path, editing so that a portion on the routing information shielding section of the routing information included in the route trace control message received by the reception section cannot be identified, and a transmission section for sending out a route trace control message after the edition to the node of the subsequent stage, which is located on the path. | 01-07-2010 |
| 20100008262 | SIGNALING APPARATUS AND SIGNALING METHOD - A signaling apparatus is applied to a node constituting a network including internal network to network interface (INNI) domains having INNI interfaces between a plurality of networks in an area and external network to network interface (ENNI) domains having ENNI interfaces that connect the INNI domains. The apparatus includes a processing unit that processes a signaling message for setting a path when an end-to-end path that passes through the INNI domains and the ENNI domains that connect the INNI domains is set in response to the signaling message, a storing unit that holds information on types of links between an own node and adjacent nodes, and a judging unit that judges whether the own node is a connection end point of the INNI domains or the ENNI domains with reference to route information in the message and the information on the types of the links held in the storing unit. | 01-14-2010 |
| 20100088417 | STORAGE MEDIUM, UNIQUENESS ASSURANCE REALIZING METHOD, SESSION MANAGEMENT METHOD AND UNIQUENESS ASSURANCE INFORMATION SETTING MANAGEMENT DEVICE - One system distributes a request for providing a service using a first communication protocol, from a terminal device to a server selected from among a plurality of servers by a server load balancer in response to the request. A corresponding relation between identification information for identifying a session generated in a distributed server and the server that has generated the session corresponding to the identification information is set in the server load balancer by the service of a second communication protocol as uniqueness assurance information for uniqueness assurance. Thus, when the provision of a service is requested using a second communication protocol by the terminal device, the server load balancer refers to the set uniqueness assurance information and selects the server for providing the service from among the plurality of servers. | 04-08-2010 |
| 20100142546 | COMMUNICATION APPARATUS - A communication apparatus stores therein link information indicating a network connection status of an entire hierarchical network, collects link information indicating a network connection status in its own area in predetermined cycles, and transmits the collected link information to another area assigned a level different from a level assigned to its own area. When receiving link information from another area assigned a different level, the communication apparatus determines whether the received link information is new link information newer than link information stored in a predetermined storage unit; when it is determined that the received link information is new link-information, the communication apparatus stores the new link information into the predetermined storage unit and advertises it in its own area; by contrast, when it is determined that the received link information is not new link-information, the communication apparatus discards the received link information without storing and advertising. | 06-10-2010 |
| 20100241715 | METHOD OF REALIZING UNIQUENESS ASSURANCE AND METHOD OF DETERMINING MESSAGE DESTINATION - A method of realizing uniqueness assurance includes: selecting a server to which a first message is to be transferred from multiple servers and transferring the first message to the selected server when the first message is received from a terminal apparatus by a load sharing apparatus; storing a second message that should be transferred to the same server as that of the first server when the second message is received from the terminal apparatus by the load sharing apparatus after the first message is transferred; generating uniqueness assurance information corresponding to the communication protocols corresponding to a session generated by the server to which the first message is transferred, the uniqueness assurance information indicating the correspondence between the session and the message corresponding to the session; and transferring the second message in accordance with the generated uniqueness assurance information if the stored second message exits. | 09-23-2010 |
| 20110040892 | LOAD BALANCING APPARATUS AND LOAD BALANCING METHOD - A load balancing apparatus stores a transfer rule in which a path control identifier for identifying a path for a message sent from a client device is associated with relay device information for specifying a relay device that creates the path control identifier. When receiving a message from the client device, the load balancing apparatus determines whether the message contains the path control identifier. If the load balancing apparatus determines that the path control identifier is contained, the load balancing apparatus specifies, from the transfer rule, relay device information with which the path control identifier is associated and then sends the message to a relay device that is specified by the specified relay device information. In contrast, if the load balancing apparatus determines that the path control identifier is not contained, the load balancing apparatus sends the message to the relay device specified in accordance with a predetermined condition. | 02-17-2011 |
| Patent application number | Description | Published |
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| 20090122434 | HEAD IC, READ CIRCUIT AND MEDIA STORAGE DEVICE - A head IC, which adjusts an amplitude level of a read signal of a head, for outputting to a read channel having an AGC amplifier, includes: a differential amplifier; an AGC circuit; external gain setting sections; and a switch. Since the AGC amplifier is disposed in the head IC, the amplitude from the head is automatically adjusted in the head IC, and the signal level, which enters the input dynamic range of the AGC amplifier of the read channel, can be adjusted. The AGC amplifier can be operated as a fixed gain amplifier using a gain value which is set from the outside, so the power consumption can be minimized even if automatic adjustment is performed. | 05-14-2009 |
| 20090213483 | Magnetic head drive device and magnetic recording/reproducing device using this drive device - A magnetic head drive device drives a heater element for controlling a protrusion amount of the magnetic head. The heater drive circuit of the heater element of the magnetic head, in which a read element, a write element and a heat element is included, is constructed by the PWM modulation method. A pair of heater wiring lines is made of a path in which the signal polarity is inverted. Therefore cross-talk noise, to the read wiring line, can be decreased even if PWM driving is executed. | 08-27-2009 |
| 20100110578 | SIGNAL AMPLIFIER AND STORAGE DEVICE - According to one embodiment, a signal amplifier amplifies a read signal read from a storage medium by a head, and includes an amplifier, a detector, and an impedance controller. The amplifier amplifies the read signal received from the head to obtain an amplified signal, and varies the input impedance of the read signal based on a control signal. The detector detects the frequency characteristic of the amplified signal output from the amplifier and determine the frequency characteristic as a first frequency characteristic. The impedance controller generates the control signal such that the first frequency characteristic detected by the detector becomes a predetermined second frequency characteristic. | 05-06-2010 |
