Abstract: Embodiments of the present invention provide an SDN, a method for forwarding a packet by an SDN, and an apparatus. The SDN includes an SDN controller and an SDN switch, the SDN switch includes a processor and a data path, and the SDN switch further includes: a first transceiver, configured to: receive a first packet, determine that the first packet is to be sent to the SDN controller, and forward the first packet to a channel agent module; and the channel agent module, configured to: add address information of the SDN controller to the first packet, encapsulate the first packet into a second packet, and send the second packet to the controller. The first transceiver is further configured to receive a third packet sent by the SDN controller, and forward the third packet to the channel agent module.

Abstract: The ultrasonic CT device includes: a first water tank configured such that an object is inserted therein, the first water tank being filled with a medium through which an ultrasonic wave passes; a ring array that irradiates an ultrasonic wave to the object and detects an ultrasonic wave reflected by the object while moving on an outer surface of the first water tank; and a signal processing unit that generates a tomographic image of the object based on a signal obtained by the ring array. The ultrasonic CT device further includes: a second water tank that houses the first water tank and the ring array; and a lid having a hole or a notch which is provided on a side of the object in the second water tank and which drains the medium.

Abstract: Provided is a device that transmits and receives an ultrasonic wave to and from an entire periphery of a specimen while preventing a movement of the specimen. An ultrasonic wave transmission and reception device includes: an oscillator array that is arrayed with an oscillator, the oscillator transmitting and receiving an ultrasonic wave; a fixing tool that is disposed between the oscillator array and the specimen and retains the specimen; and a drive mechanism that presses at least a part of the fixing tool against the specimen as to retain the specimen. An ultrasonic wave transmitted by the oscillator array passes through the fixing tool and irradiates on the specimen, and as for the oscillator array, the oscillator array and the fixing tool are disposed in a positional relationship such that the ultrasonic wave reflected by and/or passing through by the specimen and passing through the fixing tool is received.

Abstract: A sinogram is corrected in a form that can use a straight-ray type reconstruction method while considering trajectory of refracted waves. Specifically, based on the sequentially estimated path information of the virtual waves, an arrival time difference sinogram is corrected by a difference or a ratio between “shortest arrival time of wave” and “arrival time of the wave through the shortest path” to each detection element.

Abstract: Provided herein is a phantom capable of mimicking both a dense breast and a fatty breast. A phantom for ultrasound measurement includes: a first member that mimics an object of interest for measurement; and a second member having provided therein the first member. The second member has the property to decrease its sound speed with a temperature increase brought by external temperature control. The sound speed of the second member at a predetermined temperature is equal to the sound speed of a third member surrounding the second member. The first member and the second member are immiscible with each other.

Abstract: Information relevant to a state of a tissue in a subject (state information) is provided with technology reducing the amount of memory and computation necessary at the time of extracting the information. An ultrasonic wave is transmitted towards a subject, a transmission wave transmitted through the subject or a reflection wave reflected on the subject is received. A reception signal is generated on the basis of the transmission wave or the reflection wave. A tissue region candidate, of a region indicating a tissue of the subject, is set on the basis of the reception signal. State information, which is information relevant to a state of the tissue in the tissue region candidate, is calculated on the basis of the reception signal and the tissue region candidate. An ultrasonic image reflecting the state information is generated on the basis of the state information and displayed.

Abstract: An ultrasonic imaging device according to the present invention includes: a container provided with an opening for inserting a target region of a subject; and a transmission/reception unit that transmits ultrasound to the target region inserted into the container filled with a liquid and receives the ultrasound that penetrates the target region or is reflected from the target region. The container has a pressure reducing unit that holds the target region in the container by reducing a pressure in the container of which the opening is covered with the target region. According to the present invention, since it is possible to maintain a shape close to a predetermined shape when the target region of a breast or the like is inserted into a container filled with the liquid, it is possible to measure the target region with high accuracy by transmitting and receiving ultrasound.

Abstract: According to the present invention, a clear transmitted wave image of a boundary of tissues is generated in a short time. An ultrasonic imaging device of the present invention includes a transducer array in which a plurality of transducers transmitting and receiving an ultrasound wave are arrayed; a transmission unit which delivers an electric signal to at least one of the plurality of transducers, such that the delivered electric signal is converted into an ultrasound wave, and transmits the ultrasound wave to a target; a reception unit which receives a received signal that is an electric signal output by each of the plurality of transducers having received a reflected wave and a transmitted wave of the ultrasound wave of the target; and an image generation unit which individually generates a reflected wave image of a cross section of the target using a received signal of the reflected wave and a transmitted wave image of the cross section of the target using a received signal of the transmitted wave.

Abstract: An error in a physical property value due to refraction of an ultrasonic wave is reduced, and thus the physical property value is calculated with high accuracy. A transducer of a transducer array transmits an ultrasonic beam to a subject placed in a predetermined imaging space, the transducer receives a transmission of the ultrasonic beam transmitted through the subject, and an image generating unit generates a transmission image based on the reception signal. The controller includes a focal length adjusting unit that adjusts a length between a focal position of the ultrasonic beam and the center of an imaging space to adjust a divergence angle of the ultrasonic beam.

Abstract: Embodiments of the present disclosure provide a method and a device for ONU overall rate limiting. The method includes: receiving a multicast program sent by a multicast program server; making N+M copies of the multicast program; sending N copies of the multicast program to N passive optical network PON ports that request the multicast program on demand; and sending M copies of the multicast program to M ONU rate limiting units corresponding to M ONUs that request the multicast program on demand, discarding the M copies of the multicast program. In the method, after the rate limiting is performed on the multicast program, the multicast program is discarded, so that real-time rate limiting is performed on each ONU without affecting bandwidth of a PON.

Abstract: There is provided an ultrasonic signal processing apparatus in which the amount of an ultrasonic propagation material in a measurement unit that stores a transducer array is reduced while the transducer array and a target are separated from each other, and thus maintenance of the ultrasonic propagation material is easily managed. The ultrasonic signal processing apparatus includes a water tank having an opening portion, a measurement unit, and a moving unit. The measurement unit which is disposed on an outside of the water tank, includes a transducer array that transmits and receives an ultrasonic signal, and a space which is filled with a material for propagating the ultrasonic signal, and measures the ultrasonic signal. The moving unit is connected to the measurement unit, and moves the measurement unit between the opening portion and the bottom portion of the water tank, along a side wall thereof.

Abstract: The present disclosure relates to the field of communication technologies, and more particularly, to an adjustable coupling device and a radio frequency communication device. The adjustable coupling device includes a coaxial transmission line for transmitting signals across the two terminals thereof and a coupling body for sampling the signals via coupling. The adjustable coupling device further includes a coupling cavity formed on the outer surface of the coaxial transmission line; a printed circuit board on which the coupling body is disposed, the printed circuit board capping the coupling cavity to seal the coupling body within the coupling cavity; a tuner, disposed through the printed circuit board, where the lower end of the tuner extends into the coupling cavity, and the tuner can be moved up and down to change the depth thereof extended into the coupling body so as to change the electromagnetic field distribution within the coupling cavity.

Abstract: A method and device for positioning human eyes are disclosed. The method includes: acquiring an input image; performing grayscale processing to the image to extract a grayscale feature; extracting a candidate human eye area in the image by employing a center-periphery contrast filter algorithm according to the grayscale feature; extracting left and right eye candidate areas respectively from the candidate human eye area through a pre-created human eye statistical model; and checking pairing on the left and right eye candidate areas to determine positions of left and right eyes.

Abstract: A cavity filter is disclosed, which comprises a cavity, a cover plate, and a connector inner conductor disposed within the cavity, wherein the connector inner conductor passes through the cover plate to be connected with an external circuit board, the connector inner conductor comprises a first inner conductor and a second inner conductor, the first inner conductor is connected with a signal transmission point on the external circuit board, the second inner conductor is connected with an internal signal transmission point inside the cavity, the first inner conductor and the second inner conductor have a gap therebetween and cooperate with each other to form a structural capacitor, and the internal signal transmission point is connected with the signal transmission point on the external circuit board via the structural capacitor. A power amplifying module and a signal transceiving device are also disclosed.

Abstract: Embodiments of the present disclosure provide a method and a device for ONU overall rate limiting. The method includes: receiving a multicast program sent by a multicast program server; making N+M copies of the multicast program; sending N copies of the multicast program to N passive optical network PON ports that request the multicast program on demand; and sending M copies of the multicast program to M ONU rate limiting units corresponding to M ONUs that request the multicast program on demand, discarding the M copies of the multicast program. In the method, after the rate limiting is performed on the multicast program, the multicast program is discarded, so that real-time rate limiting is performed on each ONU without affecting bandwidth of a PON.

Abstract: The present disclosure relates to the field of communication technologies, and more particularly, to an adjustable coupling device and a radio frequency communication device. The adjustable coupling device includes a coaxial transmission line for transmitting signals across the two terminals thereof and a coupling body for sampling the signals via coupling. The adjustable coupling device further includes a coupling cavity formed on the outer surface of the coaxial transmission line; a printed circuit board on which the coupling body is disposed, the printed circuit board capping the coupling cavity to seal the coupling body within the coupling cavity; a tuner, disposed through the printed circuit board, where the lower end of the tuner extends into the coupling cavity, and the tuner can be moved up and down to change the depth thereof extended into the coupling body so as to change the electromagnetic field distribution within the coupling cavity.

Abstract: The present disclosure discloses a structural capacitor, a connector comprising the structural capacitor and a communication apparatus using the connector. The structural capacitor comprises a rod and a holder. The rod comprises a first section and a second section connected with the first section, and the holder comprises a through hole. The first section and the second section are fitted into the through hole to accomplish the connection between the first section and the second section in an axial direction. The connector of the present disclosure features a simple structure, a convenient manufacturing process and a low cost. The communication apparatus of the present disclosure has advantages such as a simple manufacturing process, parameters that can be easily guaranteed, a low processing cost and a stable product performance.

Abstract: A cavity filter is disclosed, which comprises a cavity, a cover plate, and a connector inner conductor disposed within the cavity, wherein the connector inner conductor passes through the cover plate to be connected with an external circuit board, the connector inner conductor comprises a first inner conductor and a second inner conductor, the first inner conductor is connected with a signal transmission point on the external circuit board, the second inner conductor is connected with an internal signal transmission point inside the cavity, the first inner conductor and the second inner conductor have a gap therebetween and cooperate with each other to form a structural capacitor, and the internal signal transmission point is connected with the signal transmission point on the external circuit board via the structural capacitor. A power amplifying module and a signal transceiving device are also disclosed.

Abstract: The present disclosure discloses a structural capacitor, a connector comprising the structural capacitor and a communication apparatus using the connector. The structural capacitor comprises a rod and a holder. The rod comprises a first section and a second section connected with the first section, and the holder comprises a through hole. The first section and the second section are fitted into the through hole to accomplish the connection between the first section and the second section in an axial direction. The connector of the present disclosure features a simple structure, a convenient manufacturing process and a low cost. The communication apparatus of the present disclosure has advantages such as a simple manufacturing process, parameters that can be easily guaranteed, a low processing cost and a stable product performance.