Kabushiki Kaisha Toshiba

Nippon Telegraph and Telephone Corporation

Toshiba Medical Systems Corporation

Tokyo Shibaura Denki Kabushiki Kaisha

Masayuki Nishiki

Yuki Takei

Akira Tsukamoto

Seiichiro Nagai

Takayuki Fujiwara

Satoshi Nishiyama

Takuya Sakaguchi

Hiroshi Osawa

Satomi Inoue

Masato Nishiguchi

Koichiro Nabuchi

Manabu Tanaka

Takayuki Tomisaki

Tohru Saisu

Shin-ichi Yamada

Naoto Watanabe

Yukio Endo

Kyojiro Nambu

Shigeharu Ohyu

Kazuhiro Iinuma

Michitaka Honda

Kunio Shiraishi

Kinya Takamizawa

Hiroshi Asahina

Mikihito Hayashi

Shigemi Fujiwara

Masayuki Takano

Kunio Aoki

Shingo Kanemitsu

Yuta Watanabe

Shinichi Yamada

Tomonori Takeda

Yoshio Taniguchi

Toshihiro Rifu

Takamichi Kikkawa

A layer 2 (L2) switch receives session information and destination information included in upstream communication transmitted from a network device, and compresses the received session information and destination information. Then, the L2 switch stores compressed information that has been compressed, into a memory unit that stores a session table to be referred to when downstream communication is received.

L2 switch, communication control method, and communication control program

A level 2 (L2) switch receives a packet of upstream communication and a packet of downstream communication that are transmitted from a network device. Further, in a case where it is determined whether or not the received packet is a packet of upstream communication, and when it is determined that the packet is of session upstream communication and is a packet at a session start time, the L2 switch acquires session information and destination information included in the packet of the upstream communication, and stores in a session table. Further, when it is determined that the packet is of upstream communication and is not a packet at a session start time, and destination information of the packet is different from destination information stored in the session table, the L2 switch updates the destination information of the packet to the destination information stored in the session table.

In a network management device, a storage unit stores priority of each of a plurality of users using a network system and a plurality of spare configurations used when a failure occurs in an active edge router, and, when a failure occurs in the active edge router, a setting unit sets each of the plurality of spare configurations to any of a plurality of edge routers included in the network system, in order from a user having higher priority, on the basis of the priority of the user.

Network system management apparatus and method

A control system () includes, for each type of Virtual Network Function (VNF), a VNF compatibility condition indicating a condition of allocation of resources by which the VNF corresponding to the type is allowed to coexist with other VNFs in an identical computer, and resource usage information indicating resources in use by the VNF in the computer and unused resources. The control system () includes a VNF deploy control unit () referencing, in a case of receiving an instruction to additionally install a VNF, the type of the VNF to be additionally installed, the VNF compatibility condition, and the resource usage information to determine, from among the unused resources, resources allocated to the VNF to be additionally installed, and a resource allocation processing unit allocating the determined resources to the VNF to be additionally installed.

Control device and control method

Upon receiving a copy of upstream communication from a first switch, a second switch specifies an NF apparatus serving as a transmission source of the upstream communication, based on apparatus information indicating a MAC address of each apparatus and a transmission source MAC address contained in the copy of the upstream communication. The second switch refers to the apparatus information, and MAC address information indicating, for each port of the switch, a MAC address of an apparatus connected via the port, thereby specifying a port of the second switch connected to the NF apparatus, and a MAC address of the transmission source via the port. The second switch stores session information in which information on the specified port and MAC address is associated with header information set for the copy of the upstream communication. Upon receiving downstream communication, the second switch transfers the downstream communication to the NF apparatus.

L2 switch, communication method, and communication program

A packet transfer apparatus registers time information from a system clock on a CPU region to a time information holding table on a hardware region, adds a receiving time to a received packet using a counter value on a hardware clock and the time information registered in the table, and transfers, to a transfer destination, the packet to which the receiving time has been added.

Packet transfer device, packet transfer method, and packet transfer program

A counter router () assigns predetermined information specifying a terminal () and a sequence number according to the predetermined information to a packet which is received and destined for the terminal (). Further, the counter router () transfers the packet to which the predetermined information and the sequence number are assigned, to a subscriber accommodation router () via a relay device. Further, the subscriber accommodation router () stores, in an aggregation server (), the predetermined information and the sequence number which are assigned to the packet transferred from the counter router ().

Information collecting system and information collecting method

A communication system includes a programmable switch configured to perform packet transfer and queuing, a plurality of VNFs configured to execute network functions on packets, and a controller configured to control the programmable switch including a queue distribution unit configured to distribute input packets to any of the plurality of VNFs according to an instruction of the controller with respect to a queue group, the plurality of VNFs each include a load measurement unit configured to measure an amount of consumption of server resources and notify the controller of a load status, and the controller includes a load analysis unit configured to analyze a load of each of the plurality of VNFs based on a certain rule, and a queue control unit configured to change a queue distribution rule.

Communication system and communication method

A communication system includes a flow collector that collects traffic of an NW edge accommodating CPE, an NFVO that provides an instruction to add or remove a resource of a VNF, a resource management device that notifies the NFVO of an increased or decreased resource amount and an addition or removal instruction of the VNF based on an increase or decrease of the traffic of the NW edge collected by the flow collector, and that decides on the VNF which becomes a redirection destination of the traffic of the NW edge in response to execution of addition or removal of the VNF by the NFVO, a VIM that adds or removes the VNF in accordance with an instruction from the NFVO, and a flow controller that instructs the NW edge to set the VNF decided by the resource management device as the redirection destination of the traffic.

A control systemmay include a packet size analysis unit () that analyzes a distribution of packet sizes of traffic input to VNFs, a capacity calculation unit () that calculates a traffic volume per unit time processible by one VNF based on VNF capacity information indicating a traffic volume (bps, pps) per unit time processible by one VNF for a packet size and the distribution of the packet sizes input to the VNFs, and an installation number calculation unit () that calculates the number of VNFs to be increased or decreased based on the traffic volume per unit time processible by one VNF and the resource amount necessary for forwarding of the traffic.

When a plurality of X-ray images in a time sequence is stored in an image data storing unit (), a marker coordinate detecting unit () detects coordinates of a stent marker in each X-ray image, and a motion vector calculating unit () calculates, with coordinates of the stent marker detected in a first frame as reference coordinates, a motion vector of the coordinates of the stent marker detected in each X-ray image of a second and subsequent frames with respect to the reference coordinates. Then, a filter application range determining unit () moves and determines an application range of a smoothing filter in each X-ray image based on the motion vector, and the filtered image generating unit () generates a filtered image by performing a process by the smoothing filter between application ranges determined in a process target image and a reference image.

X-ray diagnosis apparatus and image processing apparatus

A tomosynthesis image is generated by applying preprocessing to each image obtained by capturing a plurality of X-ray images at a plurality of X-ray tube positions and then performing filtering processing and backprojection. At this time, a proper filter coefficient used filtering is determined for each scan track, each image frame, and each pixel position in an image.

X-ray diagnostic apparatus, image processing apparatus, and method of calculating filter coefficients used for image formation processing in x-ray diagnostic apparatus and the like

Pixel data in a region of a flat panel detector is obtained and displayed. For example, pixel data in a region irradiated with X-ray is obtained and displayed. The region to be irradiated with-the X-ray is estimated according to a degree of opening of an X-ray beam limiting device and a distance between the X-ray beam limiting device and the flat panel detector. Further, it can be determined from pixel data value of the flat panel detector also. A region of a patient can be also determined from the pixel data. Thus, an image corresponding to the entire flat panel detector, an image corresponding to an X-ray irradiation region and an image corresponding to a patient region can be displayed. A resolution for obtaining the pixel data is changed corresponding to the size of a region in the flat panel detector whose pixel data should be obtained and a processing resolution of an image processing means at post step. Particularly in an X-ray diagnostic apparatus of bi-plane structure, an observation region can be traced flexibly.

X-ray diagnostic apparatus using an X-ray flat panel detector and method for controlling the X-ray diagnostic apparatus

According to information input through a keyboard, an X-ray irradiation condition selecting portion selects an X-ray irradiation condition, retrieves a correspondence table according to this X-ray irradiation condition so as to read out a gain control state suitable for an irradiation condition, and drives an analog SW setting portion. According to a signal from the analog SW setting portion, an integration capacity of an initial stage integration amplifier is changed over. Further, according to other mode, accumulated electric charge Q of a picture element Cp is read out on a signal line and converted to a voltage Vo by the integration amplifier. By appropriately determining a sampling time by a sample/hold circuit after electric charge is read out, an influence of a switching element resistance can be excluded from a voltage Vx. Therefore, the voltage Vx can be sample held stably. Further, because the integration circuit has a characteristic of damping a high frequency noise generated in the integration amplifier, the S/N ratio of the voltage Vx can be improved.

Radiation detector, radiation detecting method and X-ray diagnosing

An X-ray imaging apparatus comprises an X-ray emission unit for emitting X-rays onto a human body under examination, an X-ray emission control unit for outputting an X-ray emission signal to direct the X-ray emission unit to emit X-rays, a flat panel X-ray detector having a two-dimensional array of detector elements in rows (lines) and columns, each of the detector elements converting incident X-rays passed through the human body under examination into an electric charge signal and storing it, a resetting unit for placing each line of the detector elements in the readout state in sequence, thereby discharging electric charge stored on each of the detector elements, a storage unit for placing all the lines of the detector elements in the readout state to thereby allow each of the detector elements to store an electric charge signal, and a readout unit for placing each line of the detector elements in the readout state in sequence to thereby read an electric charge signal from each of the detector elements.

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Ootawara, Japan

Masayuki Nishiki