Abstract: A device that accepts input of asynchronously-arriving variable-length optical packets transmitted over a plurality of lightpaths, and outputs same to a single optical path, comprising: in order to prevent the optical packets from overlapping in the output lightpath, a controller that uses the delay times of the delay elements and the optical packet length and arrival gap time thus read to determine by computation the delay element used for temporary storage, where a plurality of stages of processors is provided. Thus, the processing required to determine the delay time is performed by parallel processing with the results of processing the prefix-sum operation used in parallel pipelined processing along with the queue length, optical packet length and arrival gap time of the buffering device.

Abstract: An operation machine displays a received image on a monitor to enable an operator to remotely control a moving unit such as a model car and robotic arms through the image provided through a network by a camera on the unit and displayed on the monitor. Plotting of the received image on the monitor is conducted at predetermined intervals in plotting timing. The plotted image becomes a predicted image subjected to a time delay process. The moving unit carrying the camera is disposed in a remote area, and connected to a personal computer through the Internet to transmit motion pictures to the computer. At this time, a fluctuation correction is made to data of the motion pictures to provide a method of displaying a natural image. The method is employed in a moving unit's remote control system enabling an operator to enjoy a precise remote control of the unit.

Abstract: In a contents summarizing unit that extracts a characteristic motion of a player during a match from video contents regarding sports and summarizes it in a required time period so that it can be watched in the required time period, the contents summarizing unit comprises an event information obtaining part that obtains event information such as the characteristic motion of the player during the match from the abovementioned contents, an inside expressing information producing part that produces inside expressing information describing an outline of the match based on the event information, a surface sentence information producing part that produces surface sentence information expressed by a sentence that summarizes the contents based on the inside expressing information, and a contents summary information outputting part that outputs contents summary information wherein the surface sentence information is associated with image information corresponding to the event information.

Abstract: Herein are disclosed a cable television system, mobile communication terminal, a relay apparatus, a center apparatus, and a method of providing a cable television service using the system, which enable a user operating a CATV mobile terminal (6) to receive a CATV service regardless of the service area of the CATV station where the user is located. When a vehicle (5) having a CATV mobile terminal (6) mounted thereon moves into a service area of a CATV station (3, 4), the CATV mobile terminal (6) is operated to transmit a log-in request to the CATV station (3, 4). The CATV station (3, 4) is operated to inquire about the user to the subscriber station (2), and the subscriber station (2) is operated to judge whether or not the user is authentic. Subscriber station (2) is operated to deliver common contents to the CATV mobile terminal (6) through the CATV station (3, 4) when it is judged that the user is authentic.

Abstract: An optical transmitter generates a transmission signal having a frame as a unit, the frame including a signal pilot signal with fixed amplitude and phase and two data bits to output the generated signal into a transmission line. In a receiver, a splitter splits the signal light from the transmission line. An optical delay delays the signal light for a 1-bit period. A first combiner combines the signal light from the transmission line and the output signal light from the optical delay. A photodetector converts the combined light into an electrical signal. A 3-bit optical delay, a second combiner, a BPF, and an oscillator generate a frame-timing signal. A gate separates a data from the output from the photodetector under the control of a gate control unit. A binary discriminator binary-discriminates the output signal from the gate.

Abstract: The present invention is a wireless communications system for simultaneously establishing a basic access network and a wireless access network using at least two kinds of wireless communication networks. In the basic access network, there are executed signaling communication for obtaining available network information based on the position information of a terminal and communication by SIP (Session Initiation Protocol) for executing exchange of a subscribe request signal between terminals and negotiation of communication. This arrangement makes it possible to connect between terminals by a media application on peer to peer.

Abstract: A relatively inexpensive image recognition apparatus offering a high image recognition rate.

Abstract: A page re-ranking system includes a super page producing part that produces a super page where page contents are combined between multiple versions for each of multiple Web pages that can be obtained as a search result page in compliance with a user's query and to which a page ranking is created, a super page analyzing part that analyzes a covering degree of a topic representation that is contained in the super page produced by the super page producing part, and a re-ranking part that grants a renewed page ranking to each of the Web pages by comparing the analysis results obtained by the super page analyzing part between the super pages.

Abstract: A data communication method and apparatus for a mobile network. A destination foreign agent (FA2) recognizes a MAC address of an MN. The FA2 registers the MAC address of the MN in a handoff request message (FHReq), and the FA2 feeds the FHReq onto a transfer network. Each of foreign agents (FAs) receives the FHReq, registers an IP address corresponding to the MAC address in the FHReq when the MAC address is registered in a binding list of the FAs themselves, and feeds the IP address onto the transfer network. The FA2 receives the FHReq, and temporarily registers the MAC address and the IP address in the binding list of the FA2 itself. The FA2 transfers data sent from a homw agent (HA) to the MN, based on the information which has been temporarily registered.

Abstract: In a microstrip antenna equipped with a nearly flat plate-like radiating conductor, a nearly flat plate-like ground conductor having larger area than the radiating conductor, and a dielectric substrate set between the radiating conductor and the ground conductor, and one terminal of a feeding cable is connected to the radiating conductor, and the other terminal is connected to the ground conductor, the radiating conductor and the ground conductor are composed of nearly cloth-like substances having flexibility and conductivity, and also the dielectric substrate is composed of a nearly cloth-like substance having flexibility and insulation property, and the connection of the terminal of the feeding cable to the radiating conductor or the ground conductor is composed of by soldering through a conductive medium.

Abstract: A UWB signal generator includes: a laser light source for generating laser light, an optical intensity modulator for modulating an intensity of laser light from the laser light source, a signal source of the optical intensity modulator for outputting a signal transmitted to the optical intensity modulator, an optical frequency shift keying (optical FSK) modulator to which output light from the optical intensity modulator is input, a signal source for controlling a signal transmitted to an RFC electrode of the optical FSK modulator, a high-frequency electric signal source for controlling a signal transmitted to an RFA electrode and an RFB electrode of the optical FSK modulator, and a high-speed photodetector for detecting an output from the optical FSK modulator.

Abstract: A GaN-based heterostructure field effect transistor capable of accomplishing higher output, higher breakdown voltage, higher speed, higher frequency, and the like. A heterostructure field effect transistor including a channel layer (4) of GaN and a barrier layer (6) of AlGaN, wherein the surface of a transistor element has an insulating film (10).

Abstract: A converter uses a predetermined parameter a. A generating unit accepts generated inputs x1, . . . , xn, and generates generated outputs, y1, . . . , yn, using recurrence formulas, y1=F1(x1, a) and yi+1=Fi+1(xi+1, yi) (1?i?n?1). A key accepting unit accepts key inputs, k1, . . . , kn, and gives them as generated inputs to said generating unit. A repetition controller gives the generated outputs as generated inputs to said generating unit, for an “m” (m?0) number of times, and sets one of the generated outputs to be given at the end as a random number string, r1, . . . , rn. The data accepting unit accepts data inputs, d1, . . . , dn. The converting unit converts data using, ei=di?ri, and, outputs data outputs, e1, . . . , en. The converter can be used both for encrypting and decrypting data.

Abstract: A method for producing a thin layer device such as a superconductive device excellent in mechanical strength and useful as a submillimeter band receiver is provided. The thin layer device is produced by forming a multilayer structure substance comprising an NbN/MgO/NbN-SIS junction on an MgO temporary substrate, then forming SiO2, as a substrate, on said multilayer structure substance, and subsequently removing the MgO temporary substrate by etching. A superconductive device (a thin layer device) produced by a method of the present invention has excellent performance and high mechanical strength, and therefore introduction to a waveguide for a submillimeter band is also easy.

Abstract: A laser oscillator, including an optical resonator, an optical amplifier element on an optical path inside the optical resonator, (i) the optical path in the optical resonator having an even number of optical reflections per resonator circuit or round-trip, (ii) the transverse mode pattern of the laser light in the optical resonator rotating with each resonator circuit or round-trip by a rotation angle other than zero degrees, 90 degrees or 180 degrees, the cumulative rotation angle increasing or decreasing monotonically as the number of circuits or round-trips increases, and (iii) polarization maintaining means that maintains the polarization direction of the laser light through one resonator circuit or round-trip.

Abstract: An apparatus is provided for using modulation signals to optically modulate a plural input lightwaves of multiple frequencies, including an input filter, an optical modulator configured to simultaneously modulate the plural input lightwaves by their respective modulation signals, and an output filter disposed on a single optical path; a multiple round-trip optical path formed by the plural input lightwaves input through the input filter being reflected in round trips by the input filter and output filter and being modulated by the modulator each time the lightwaves makes a round trip and output through the output filter or the input filter when the lightwaves have reached a frequency determined by the output filter or the input filter. The time required for each light component of channel n to make a round trip is an integer multiple of one period of each modulation signal (=1/Fn).

Abstract: An image recognizing device for recognizing the motion of a player on the basis of a content containing a sport in which players play in zones demarcated with an obstacle such as a net, including a video information acquiring section for acquiring video information representing the motion of the player in play from the content, a hidden state judging unit for judging whether or not a use tool such as a ball moving between the zones and being an object of scoring is in a hidden state by a predetermined object, a hit time information determining section for determining the time at which the use tool hits on the basis of the hiding start time at which the use tool is judged to be hidden by the hidden state judging section and the hiding stop time at which the hiding is judged to be stopped, a rule information storage section in which rule information on the sport is stored, and an image content recognizing section for recognizing the image content including the motion of the player represented by the video infor

Abstract: A laser apparatus has a multipath solid-state slab laser rod and an excitation source that excites it, and uses a solid-state slab laser rod that has a trapezoid or parallelogram-shaped cross section along the optical path, that is provided with six or more faces and that has a light amplifying effect or a nonlinear optical effect. The light that is incident to the laser rod is totally reflected at the incident-light end face and exit end face of the laser rod, passes back through the interior of the laser rod a plurality of times, e.g., three times, and then exits. For light amplification, excitation light is irradiated from the side face. In addition, for nonlinear optical effects, the z-axis of a nonlinear optical crystal is disposed so as to be orthogonal to the plane of the optical path, and the temperature of the solid-state slab laser rod is kept at the phase-matching temperature.

Abstract: Disclosed is a distance measuring system comprising a transmitter that sequentially generates pulse sequences each having a plurality of pulse signals of equal amplitudes arranged at equi-time intervals, and transmits the generated pulse sequence as a radio wave; and a receiver that receives the pulse sequence transmitted from the transmitter as a radio wave, and has a distance calculator that acquires propagation times of the pulse signals in the received pulse sequence, and calculates a distance from the transmitter by giving different weightings to the pulse signals for the propagation times acquired for the respective pulse signals. As the amplitudes of the pulse signals in the received pulse sequence become larger, the weightings are made larger.

Abstract: An apparatus for retrieving moving image according to the present invention has an extracting unit for extracting the information of the feature quantity of the moving image from the fixed moving image data, an extracting unit for extracting the information of the unique identification of the moving image to identify the moving image according to the information of the feature quantity of the moving image, and a retrieving unit for retrieving and identifying the fixed moving image from the object moving image for retrieving by comparing the information of the unique identification of the moving image with the information of the unique identification of the moving image beforehand extracted from the object moving image.