Alaxala Networks Corporation

Shin-etsu Handotai Co., Ltd.

Semiconductor Technology Academic Research Center

Other

Nanoteco Corporation

Saraniasat, Inc

Shinji Nozaki

Hiroshi Morisaki

Kazuo Uchida

Nobuhiko Noto

Masato Yamada

Masaya Arai

Takahisa Miyamoto

Kazunori Hagimoto

Hitoshi Ikeda

Jun-ya Ishizaki

Masahisa Endo

Masanobu Takahashi

Hideo Kodaka

Kensuke Ino

Shunichi Ikeda

Thomas J George

Kingo Suzuki

Masashi Miyazaki

Hiroyuki Yoshino

Masao Kizawa

Keiichirou Yamate

Norio Shiroko

Tetsu Okubo

A precision agriculture support system is provided with a measuring device, a storage device and a plant species determining unit. The measuring device measures a first spectral characteristic of light derived from vegetation in a support target area. The storage device stores a database of spectrum according to species that shows a spectral characteristic of a desired crop. The plant species determining unit determines whether a plant included in the vegetation is the desired crop or not based on the database of spectrum according to species and a measurement result of the first spectral characteristic. The plant species determination unit further carries out distinction of agricultural crops, distinction of agricultural crops and weeds and the like. Furthermore, the precision agriculture support system identifies an area where abnormality is occurring, estimates a nature of the abnormality and carries out an early warning by providing a countermeasure against the abnormality.

Precision agriculture support system and precision agriculture support method

A communication can be conducted between a hub network layer-3VPN-connected to a core network and a hub network layer-2VPN connected to the core network. A first NW that conducts a packet forwarding of a VPN, a second NW that is layer-3-connected to the first NW, and a third NW that is layer-2-connected to the first NW configure VPN. When a packet is transmitted from the second NW to a destination of the third NW, a packet forwarding processing by a layer is conducted, and information is stored in destination information of the packet and forwarded by using destination information and information on the network device PE belonging to the first NW which is connected to the third NW which is a relay point to the destination.

Virtual network connection method, network system, and network device

A network devicefor relaying packets includes a network interface, a forwarding engine, a state change controller, a device state controllerand a device information table. The state change controllerand the device state controllercooperatively determine whether a packet receiver port that has received a sleep notification packet among a plurality of ports included in the network interfacehas setting of link aggregation. When link aggregation is set for the packet receiver port, the state change controllerand the device state controllerkeep the packet receiver port in a power ON state, while all other ports, which belong to an identical link aggregation group are to a power OFF state.

Network device and its control method and computer program product

In a ring network including an old master node, a new master nodeis used as a replacement for the old master node. During replacement operation, when detecting that two ring ports of the new master nodeare set in link-up state, the new master nodegives a transit nodean instruction to forward a health check frame Hsent from a ring portof the old master nodeby a forwarding route going through the new master node. The new master nodecan monitor the status of the ring network by receiving the health check frame H. This configuration enables continuous monitoring for a failure occurring in the ring network during replacement of the master node.

Network device and network system

In a virtual network apparatus, even when a fault occurs on a private line connecting plural physical network apparatuses to communicate a control signal, the redundancy is maintained, and the lower forwarding capability is prevented. In this network system, a control signal for virtualization to be transmitted and received between plural physical network apparatuses is relayed via a unit spanning LA connecting each physical network apparatus and an adjacent network apparatus in the adjacent network apparatus. Thereby, even when a fault occurs in the private line, it is possible to continue to communicate the control signal between the physical network apparatuses and continuously operate the virtual network apparatus.

Network system and network apparatus

The network system is provided. The network system includes: a first processing apparatus configured to provide a specific service; a second processing apparatus configured to provide the specific service, the first processing apparatus and the second processing apparatus having one identical address; a client apparatus configured to utilize the specific service; and a network relay apparatus connected directly or indirectly via interfaces to the first processing apparatus, the second processing apparatus, and the client apparatus and configured to relay packet transmission between the client apparatus and the first processing apparatus or the second processing apparatus, wherein the network relay apparatus forwards a received packet, which is received via the interface connecting with the client apparatus to be sent to the address as a destination, to one processing apparatus in a state enabled to provide the specific service between the first processing apparatus and the second processing apparatus.

Network system and network relay apparatus

An extranet direct route allowing extranet forwarding to a directly linked device is written in a layer 2-layer 3-integrated forwarding table. The procedure of introducing a layer 3 address-to-layer 2 address correspondence relation table entry into the layer 2-layer 3-integrated forwarding table searches the layer 2-layer 3-integrated forwarding table with a layer 3 address of the correspondence relation table entry and a layer 3 interface as search keys to retrieve any forwarding entry relating to an extranet direct route as a forwarding destination. The procedure subsequently extracts a VRF of each retrieved forwarding entry and introduces the correspondence relation table entry for the extracted VRF into the layer 2-layer 3-integrated forwarding table.

Arrangements for constructing a virtual private network (VPN) using forwarding techniques

Network relay apparatus includes: relay apparatus selector configured to, in response to reception of a join request for a preset multicast group from an external device connecting with the network, refer to information for identifying respective network relay apparatuses on a segment which the own network relay apparatus belongs to, and, at least one of information for identifying the preset multicast group and information for identifying a source, wherein the information for identifying the preset multicast group and the information for identifying a source are included in the received join request, and unequivocally select one network relay apparatus among at least part of the network relay apparatuses on the segment as a designated network relay apparatus according to a predetermined rule, wherein the designated network relay apparatus is assigned to relay a multicast packet to the external device; and a multicast route setter.

Network relay apparatus

In the case of detection of failure on a direct link interconnecting Master and Backup upstream switches, a control module of the Master upstream switch sends a partial failure message representing the occurrence of partial failure in the Master upstream switch via any of multiple lines connected to multiple ports of the Master upstream switch to the Backup upstream switch. Upon reception of the partial failure message from the Master upstream switch, a control module of the Backup upstream switch identifies partial failure occurring in the Master upstream switch and keeps the Backup operating status of the Backup upstream switch. Upon no reception of the partial failure message from the Master upstream switch, on the other hand, the control module of the Backup upstream switch identifies total failure occurring in the Master upstream switch and switches over the operating status of the Backup upstream switch from Backup to Master. In the event of failure occurring in the Master upstream switch, this arrangement effectively prevents unintentional interruption of data communication but ensures normal data communication in a network without causing the double-master state and the control loop in the network.

Network relay device for relaying data in a network and control method for the same

A light-emitting devicehas ITO transparent electrode layersused for applying drive voltage for light-emission to a light-emitting layer section, and is designed so as to extract light from the light-emitting layer sectionthrough the ITO transparent electrode layers. The light-emitting devicealso has contact layers composed of In-containing GaAs, formed between the light-emitting layer sectionand the ITO transparent electrode layers, so as to contact with the ITO transparent electrode layers respectively. The contact layersare formed by annealing a stackobtained by forming GaAs layerson the light-emitting layer section, and by forming the ITO transparent electrode layersso as to contact with the GaAs layersto thereby allow In to diffuse from the ITO transparent electrode layersinto the GaAs layersThis provides a method of fabricating a light-emitting device, in which the ITO transparent electrode layers as the light-emission drive electrodes are bonded as being underlain by the contact layers, to thereby reduce contact resistance of these electrodes, and to thereby make the contact layers less susceptible to difference in the lattice constants with those of the light-emitting layer section during the formation thereof.

Method of fabricating light-emitting device and light-emitting device

In a method of manufacturing a semiconductor device, semiconductor circuit elements or wiring patterns are formed on a semiconductor substrate then, a porous semiconductor oxide film is formed as an interlayer insulating film on the semiconductor substrate including the semiconductor circuit elements or wiring patterns by oxidizing semiconductor substance in a mixture gas containing an oxygen gas in a chamber.

Semiconductor device with porous interlayer insulating film

In a light-emitting device, a light-emitting layer portion composed of a compound semiconductor is bonded on one main surface of a transparent conductive semiconductor substrate while placing a substrate-bonding conductive oxide layer composed of a conductive oxide in between. Between the light-emitting layer portion and the substrate-bonding conductive oxide layer, a contact layer for reducing junction resistance with the substrate-bonding conductive oxide layer so as to contact with the substrate-bonding conductive oxide layer. This is successful in providing the light-emitting device which is producible at low costs, has a low series resistance, and can attain a sufficient emission efficiency despite it has a thick current-spreading layer.

Light-emitting device and method of fabricating the same

A light emitting device having an oxide transparent electrode layer as an emission drive electrode, and designed so that damage possibly occurs during bonding of electrode wires to the bonding pads is less influential to a light emitting layer portion is disclosed. The light emitting device has the light emitting layer portion composed of a compound semiconductor and has a double heterostructure in which a first-conductivity-type cladding layer, an active layer and a second-conductivity-type cladding layer are stacked in this order; and the light emitting layer portion is applied with emission drive voltage through an oxide transparent electrode layer formed so as to cover the main surface of the second-conductivity-type cladding layer. A bonding pad composed of a metal is disposed on the oxide transparent electrode layer, and to the bonding pad an electrode wire for current supply is bonded. Between the second-conductivity cladding layer and the oxide transparent electrode layer, a cushion layer composed of a compound semiconductor having a dopant concentration lower than that of the second-conductivity-type cladding layer is disposed.

Light emitting device and method of fabricating the same

While a crucible containing an Si material and a substrate to be processed are set in a chamber, Ar gas is supplied into the chamber and the Si material is evaporated by heating, thereby forming a nanoparticle thin film of Si on the substrate. This substrate is then annealed in an oxygen atmosphere to oxidize Si, forming a nanoparticle oxide thin film consisting of SiO.

Method of fabricating a semiconductor device having a nanoparticle porous oxide film

A light emitting devicehas a structure in which a p type InGaAs layeras an electrode contact layer and an ITO electrode layeras an oxide transparent electrode layer are formed in the order in a first major surfaceside of a light emitting layer section. In a second major surfaceside of the light emitting layer section, an n type InGaAs layeras an electrode contact layer and an ITO electrode layeras an oxide transparent electrode layer are formed in the order. The ITO electrode layersandtogether with the p type InGaAs layerand the n type InGaAs layerare formed on the respective both major surfacesandof the light emitting layer sectionso as to cover the respective both major surfacesandin the entirety thereof.

Growing community of inventors

Kawasaki, Japan

Shinji Nozaki