摘要:
A communication system includes: a plurality of data forwarding nodes each including a packet processing unit processing an incoming packet in accordance with a packet handling operation in which a process to be applied to a packet and a matching rule for specifying a packet to which the process is applied are associated with each other; and a control apparatus capable of using at least two logical network topologies each obtained by applying a different path calculation policy to a physical network topology formed by the plurality of data forwarding nodes, selecting a logical network topology determined per data traffic and determining a packet forwarding path, and setting a packet handling operation realizing the packet forwarding path in data forwarding nodes on the packet forwarding path.
摘要:
A control apparatus sets, in a node located at the start point of an aggregatable segment of two or more packet forwarding paths including the aggregatable segment, a packet handling operation for each flow, the packet handling operation being for writing a flow identifier for identifying the flow and a path identifier used for packet forwarding through the aggregatable segment in a region of each of packets to be matched against the matching rule and then causing the packet to be output. The packets respectively belong to the individual flows, and each of the packets is to be forwarded through a corresponding one of the two or more packet forwarding paths. Further, the control apparatus sets, in a node located intermediate on the aggregatable segment, a common packet handling operation for causing the packet that matches the path identifier to be forwarded according to the packet forwarding path. Then, the control apparatus sets, in a node located at the end point of the aggregatable segment, a packet handling operation for performing restoration and forwarding based on the flow identifier.
摘要:
A control server is connected to a plurality of physical nodes that keep control information defining an operation to be taken in accordance with input/output packet characteristics and process the input/output packets according to the control information. The control server includes a first storage unit that stores configuration information about a virtual network configured to include virtual nodes that are virtualized versions of the physical nodes, and a second storage unit that stores virtual network identifying information identifying the virtual network from characteristics of an input packet, and the control server identifies a physical node that configures a virtual network that handles a packet having a characteristic in common with the packet received by the physical node based on a request from the physical node and updates control information for each physical node.
摘要:
A piezoelectric oscillator is provided, which has a through electrode providing reliable conduction between a piezoelectric vibrating piece and an external electrode with rare occurrence of a large stress caused by temperature variation in processing or deformation of a mounted base substrate, while the hermeticity of a cavity is maintained. A piezoelectric oscillator having a piezoelectric vibrating piece sealed in a cavity defined between a base substrate and a lid substrate includes a through electrode disposed in a through hole penetrating through the base substrate, and the through electrode has a glass frit filled in the through hole and fired and a core formed of a material containing only iron and nickel and disposed in the through hole together with the glass frit. The values of the thermal expansion coefficients of the base substrate, the glass frit, and the core are set as: base substrate glass≧frit>core.
摘要:
Provided are a package manufacturing method capable of hot-molding a substrate into a desired shape, and a package and a piezoelectric vibrator manufactured by the manufacturing method, and an oscillator, an electronic apparatus, and a radio-controlled timepiece each having the piezoelectric vibrator. A molding step is a step in which in a penetration hole forming step, through-holes are formed by pressing and heating a base substrate wafer with a through-hole forming mold having convex portions corresponding to the through-holes. The through-hole forming mold is formed of a material having an open porosity equal to or larger than 14%.
摘要:
To achieve small-sized formation of a piezoelectric vibrator while preventing exciting electrodes provided at both faces of the piezoelectric vibrating piece from being shortcircuited to each other and enabling to fabricate the piezoelectric vibrating piece easily, there is provided a piezoelectric vibrator 1 including a case 3 in a shape of a bottomed cylinder having an opening portion 3a and having a conductivity, a ring 12 substantially in a cylindrical shape press-fitted to the opening portion 3a of the case 3 and having a conductivity, one piece of a lead 13 inserted to the ring 12 and having an inner lead portion 15 and an outer lead portion 16, a filling member 14 having an insulting property for sealing an interval between the lead 13 and the ring 12 in airtight, and a piezoelectric vibrating piece 2 which is constituted by substantially a plate-like shape arranged at inside of the case 3 and includes exciting electrodes 8, 9 at both faces thereof and in which the exciting electrode 8 is supported by the inner lead portion 15 by being subjected to bump connection with the inner lead portion 15 of the lead 13 and the exciting electrode 9 is subjected to wire bonding with the ring 12.
摘要:
A control server is connected to a plurality of physical nodes that keep control information defining an operation to be taken in accordance with input/output packet characteristics and process the input/output packets according to the control information. The control server includes a first storage unit that stores configuration information about a virtual network configured to include virtual nodes that are virtualized versions of the physical nodes, and a second storage unit that stores virtual network identifying information identifying the virtual network from characteristics of an input packet, and the control server identifies a physical node that configures a virtual network that handles a packet having a characteristic in common with the packet received by the physical node based on a request from the physical node and updates control information for each physical node.
摘要:
Providing a method for manufacturing a package capable of improving production efficiency. Providing a method for manufacturing a package including: a base board and a lid board which are bonded to each other; an accommodated article which is sealed in a cavity formed between the base board and the lid board; and a penetration electrode which is disposed in a penetration hole penetrating through the base board so as to electrically connect the accommodated article to the outside, the method including: a penetration hole forming step of forming a penetration hole for the penetration electrodes 30b, 30b in the base board; a penetration electrode alignment step of inserting a core portion 7 of a conductive rivet member 9 into the penetration hole of the base board; a glass frit filling step of applying a paste-like glass frit 6a onto the other surface of the base board and filling the glass frit into the penetration hole; and a baking step of baking and curing the glass frit, wherein the glass frit filling step involves forming a glass frit filling portion 41 having a larger diameter than the penetration hole and filling the glass frit also into the glass frit filling portion.
摘要:
An anodic bonding apparatus includes a first intermediate member that is disposed between an upper surface (an outer surface) of a lead substrate wafer and a first heater, has heat conductivity, and can be flexible; and a second intermediate member that is disposed between a lower surface (an outer surface) of a base substrate wafer and a second heater, has conductivity and heat conductivity, and can be flexible, wherein the first intermediate member is formed so that a central portion thereof bulges toward the base substrate wafer further than a periphery portion thereof, and the second intermediate member is formed so that a central portion thereof bulges toward the lead substrate wafer further than a periphery portion thereof, and, the first intermediate member and the second intermediate member are evenly deformed.
摘要:
A method of manufacturing a piezoelectric vibrator according to the invention is a method of manufacturing a piezoelectric vibrator in which a piezoelectric vibrating reed is sealed in a cavity formed between a base substrate and a lid substrate bonded to each other, the method including the steps of: inserting a core portion of a conductive rivet member, which includes a planar head portion and the core portion extending in a direction vertically to the surface of the head portion, into a penetration hole of the base substrate and bringing the head portion of the rivet member into contact with a first surface of the base substrate; attaching a laminate material having elastic properties to the first surface of the base substrate so as to cover the head portion; applying a paste-like glass frit on a second surface of the base substrate and filling the glass frit in the penetration hole; and baking and curing the glass frit.