Abstract: An image forming apparatus is provided with a control circuit. The apparatus control platform where the control circuit manages the hardware resources on an operating system. The standard-application executing part executes the standard application using the managed hardware resources. The extended application platform makes the function of the standard application executed use, and makes the hardware resources use, and it has a standard application service interface part that provides the common interface corresponding to the function of the standard application as an interface for using the function of the standard application. The standard function service searches presence or absence of the standard application, and when the standard application does not present, cancels use of the standard function service from the extended application.

Abstract: Provided is an image forming device includes a control circuit having (1) a device control platform managing a hardware resource on an operating system, (2) a standard application execution part executing a standard application utilizing the hardware resource under the control of the device control platform, (3) an extended application platform with a standard function service that allows for a utilization of a function of the standard application executed by the standard application execution part, and (4) an install service adding, without having to change a configuration of a standard firmware, an interface in order to cope with a function that is not available and allowing for utilization thereof.

Abstract: An operator sets a path demand to be accommodated, and sets information of a device candidate, the number of ports, a path route and the like, which are demanded for a network, in an objective function that indicates a total cost when the path demand to be accommodated is newly included in the network. A mathematical programming problem for minimizing the objective function under a constraint condition derived from a configuration of the network is set, and a solution is obtained by using a solver for solving the mathematical programming problem. A device is added or the like to the network based on the obtained solution, and the demanded path is added to the network.

Abstract: A network control apparatus includes: a power consumption collecting unit configured to collect power consumption information measured by at least one electrical node included in an electrical layer network and at least one optical node included in an optical layer network; a cut-through range identifying unit configured to calculate an optical cut-through path based on the collected power consumption information; and a cut-through path setting instructing unit configured to instruct the electrical node and the optical node to set the optical cut-through path based on the calculation result in the cut-through range identifying unit.

Abstract: An apparatus for determining a route including: a collector that collects a current amount of link traffic and current link power consumption of each link; a virtual link setter that sets virtual links for each link; a link cost calculator that calculates a link cost of each virtual link based on the estimated increase in the link power consumption; a constraint condition setter that creates a constraint condition satisfying a requirement of end-to-end quality of a request flow based on change in quality of each virtual link and satisfying a requirement of end-to-end quality of an existing flow based on the change in quality of the existing flow on the virtual link; a route determinator that determines a route having a smallest sum of the link costs including a plurality of the virtual links satisfying the created constraint condition.

Abstract: An information processing apparatus in a network system that includes first network apparatuses that establish logical topologies and second network apparatuses that connect to the first network apparatuses and that establish physical topologies. The information processing apparatus includes a first storage unit that stores traffic amounts of paths between the first network apparatuses; a second storage unit that stores power consumption for connections between the first and second network apparatuses; and a calculation unit that calculates, for logical topologies, sums of power consumption related to a packet forwarding process in the first network apparatuses and power consumption related to the connections between the first and second network apparatuses. The calculation unit selects a logical topology with the smallest sum among the logical topologies.

Abstract: A tunnel management device includes: a central processing unit configured to manage a tunnel that establishes a virtual network to be overlaid on a IP network; and a memory coupled to the central processing unit, wherein the central processing unit: extracts a second tunnel in the virtual network that uses a second route in the IP network where a number of times a portion of a first route in the IP network is used by a first tunnel in the virtual network is used is minimized.

Abstract: A data distribution device includes: a memory configured to store cache data of data to be distributed; and a processor coupled to the memory and configured to: read the cache data from the memory in accordance with a request message received from other devices to distribute the cache data to the other devices, update, when the request message is received, a counter value that gets closer to a given value with time, so as to make the counter value move away from the given value in accordance with a reference value that is a reciprocal of a threshold value of a reception rate of the request message, whether or not to store the cache data being determined based on the reception rate; and discard the cache data in the memory when the counter value becomes the given value.

Abstract: In an information processing apparatus, a transmitter forwards received data. A significance determination unit determines significance of the received data. Based on the significance of the received data, an operation mode selection unit selects which operation mode to apply. Power management information stored in a memory describes what power management is to be performed in each different operation mode. A control unit performs power management of the transmitter, with reference to the stored power management information corresponding to the selected operation mode.

Abstract: A path control method for controlling paths among edge nodes on a network wherein a plurality of nodes, including relay nodes and multiple edge nodes, are connected via links, the method including determining paths in a specified plurality of edge nodes, path information indicating the paths determined by an edge node that determines paths earlier is transmitted to an edge node that determines paths subsequently, each edge node that determines paths subsequently determines additional paths by prioritizing the use of paths indicated by the path information, and conducting path control on the network by using the path information obtained as a result of paths being determined by the last edge node from among the specified plurality of edge nodes.

Abstract: A node includes a processor that is configured to derive, based on a delivery tree for a content, a logical sub tree structure including a first layer node and second layer nodes lower than the first layer node; calculate first electric power information used for caching the content in the first layer node in the sub tree structure; compare the first electric power information to second electric power information calculated by the second layer nodes in the sub tree structure and used for caching the content in the second layer nodes, then calculate a threshold for a content request rate for each of the second layer nodes; provide control to set the calculated threshold to the second layer nodes; and determine possibility of a cache allocation of the content by comparing a measured content request rate with the threshold.

Abstract: An information processing apparatus in a network system that includes first network apparatuses that establish logical topologies and second network apparatuses that connect to the first network apparatuses and that establish physical topologies. The information processing apparatus includes a first storage unit that stores traffic amounts of paths between the first network apparatuses; a second storage unit that stores power consumption for connections between the first and second network apparatuses; and a calculation unit that calculates, for logical topologies, sums of power consumption related to a packet forwarding process in the first network apparatuses and power consumption related to the connections between the first and second network apparatuses. The calculation unit selects a logical topology with the smallest sum among the logical topologies.

Abstract: A route control system includes a status measuring unit, a cost management unit, a route determining unit, and a route setting unit. The status measuring unit checks a status of each node included in a network. The status is a wake state or a sleep state. The cost management unit updates a link cost for a link connected to a node in the wake state to a value smaller than any link cost for a link connected to a node in the sleep state. The route determining unit determines an optimum route connecting a first terminal to a second terminal. A sum of the link costs for the optimum route is lowest among the link costs for other available routes connecting the first terminal to the second terminal. The route setting unit sets a requested data flow in the optimum route.

Abstract: A video quality monitoring method includes a distribution server measuring first video quality index values according to a full-reference method by comparing a video, distributed from the distribution server to a client through a network, with a degraded video, generated by causing multiple scenarios of quality degradation due to the network in the video in a pseudo manner, creating characteristic data of first quality degradation values, obtained by causing the quality degradation to vary with the scenarios at regular intervals, and the first video quality index values corresponding to the respective scenarios, and transmitting the characteristic data to the client; and the client measuring a second quality degradation value in the video distributed through the network, and calculating a second video quality index value, equivalent to a value according to the full-reference method, of the distributed video from the measured second quality degradation value and the characteristic data.

Abstract: A shutter section (84), mounted to a front surface (2202) of a front lens barrel (22), is included. The shutter section (84) has a shutter blade (not shown) that opens and closes an optical path of an image pickup optical system (28), an actuator (not shown) that drives the shutter blade, and a case (86) that accommodates the shutter blade and the actuator and that is provided with an opening (8610) for the optical path. The shutter section (84) is mounted to the front surface (2202) of the front lens barrel (22) by stopping a cover-side engagement stopping section (88) of the cover (26) and a case-side engagement stopping section (90) of the case (86) by engaging them with each other. By these structures, it is possible to provide a camera module that is advantageous in terms of reducing costs and size.

Abstract: A routing apparatus that determines a path for a flow in a network including a plurality of data links, the routing apparatus including: a constraint condition setting unit configured to generate a constraint condition that has a requirement that an end-to-end quality requirement of the flow is satisfied based on a quality variation occurring in each of the data links owing to the allocation of the flow to each of the data links and another requirement that an end-to-end quality requirement of another flow existing in each of the data links is satisfied based on a quality variation occurring in the another flow owing to the allocation of the flow to each of the data links; and a routing unit configured to determine the path for the flow from among a plurality of paths including the data links within a range satisfying the constraint condition.

Abstract: An information processing device, comprising: a traffic control unit configured to regularly check whether packets are transmitted to an adjacent node and received from the adjacent node; and a sleep determination process unit configured to determine whether there is a possibility that packets are transmitted to the adjacent node when no packet is transmitted to the adjacent node and received from to the adjacent node, and to transmit a sleep OK notice to the adjacent node indicating that the adjacent node shift to a sleep mode when the sleep determination process unit determines that there is a low probability that packets are transmitted to the adjacent node.

Abstract: An attraction acquisition unit of a first router acquires attraction values of third and fourth routers. When many packets the destination of which is a second router (identifier “A”) are then inputted to the first router, a traffic control unit distributes the many packets among communication interfaces so that a higher volume of traffic is sent to a communication interface with which a larger attraction value is associated. The traffic control unit then sends the many packets via the communication interfaces. As a result, a good part of the many packets are limited to a transmission route via the third router.

Abstract: According to an illustrative embodiment, a lens unit is provided. The lens unit includes at least one lens having an engagement portion in a flange portion of the lens, the engagement portion having a width perpendicular or substantially perpendicular to the optical axis of the lens, and the width of the engagement portion decreasing as the engagement portion is traversed in a direction parallel or substantially parallel to the optical axis of the lens.