Abstract: A method for acquiring azimuth information enables acquisition of azimuth information by receiving signals transmitted by GPS satellites using only a single antenna.

Abstract: The present invention relates to a method for reducing low-frequency noise in a cooled circuit wherein low-frequency noise in a cryogenic semiconductor device is reduced by carrying out thermal cure. The semiconductor device is turned on at a first temperature, and the temperature of the semiconductor device is temporarily raised, while flowing current in the semiconductor device, to a second temperature that is higher than the first temperature, and then cooling the temperature of the semiconductor device from the second temperature to a cryogenic temperature, at which the semiconductor device can operate.

Abstract: Disclosed is a high-frequency band pass filter of simple structure for use in a frequency range from hundreds of MHz to over ten GHz. The band pass filter comprises a magnetic loss sheet 1 prepared by dispersing fine powder of averaged particle size up to 30 &mgr;m of a soft magnetic metal such as an Fe—Cr—Al alloy, an input signal line 2 and an output signal line 3 made of a conductive strip disposed in serial direction with a gap between them, a capacitance means connecting the opposite ends of the lines and a GND line 4 disposed on the reverse side of the sheet. The capacitance means may be either a chip condenser 5, or that formed by disposing an internal line 7 of another conductive strip with intermediation of insulating film 6 to bridge on the input signal line 2 and the output signal line 3 to have overlapping parts.

Abstract: A mode-locked laser apparatus includes a mode-locked laser oscillator, a detection device for detecting changes in the optical path length of the mode-locked laser oscillator by utilizing the chromatic dispersion characteristics of the optical path, an optical path length controller that controls the optical path length of the laser oscillator, and a feedback circuit that controls the optical path length controller by means of the signal detected by the detection device.

Abstract: A resonance-type semiconductor optical modulator has an asymmetrical electrode structure in which the microwave power is applied to the semiconductor optical modulation element via a resonator. The resulting higher modulation voltage provides high modulation efficiency while controlling the amount of power consumption. The semiconductor optical modulation element includes an open-ended stub, a short-ended stub connected to the open-ended stub, a feeding line connected to both stubs and common electrodes. The stubs are formed in contact and the semiconductor optical modulation element is connected to the open-ended stub.

Abstract: A method and apparatus for generating optical pulses using an active mode-locking laser that includes a first modulation device, an optical selection device, a second modulation device and an amplification device. The method includes the steps of using the first modulation device to modulate a lightwave, selecting a modulation lightwave signal having a high frequency component by passing a lightwave through the optical selection device in a first direction, using the second modulation device to modulate a lightwave, selecting a modulation lightwave signal having a high frequency component by passing a lightwave through the optical selection device in a second direction, amplifying the lightwave selected by the above step, and supplying the amplified lightwave to the first modulation device.

Abstract: A method for acquiring azimuth information is provided in which first and second planar patch antennas (11a, 11b) are disposed so that their sky coverage areas partially overlap to form a common area (2), thereby dividing the antenna sky coverage area into a first area (1), third area (3) and common second area 2, and an azimuth is limited utilizing azimuths acquired in the respective areas and the angle between the two antennas. As a result, azimuth limitation information can be effectively acquired even at a location where the sky is severely blocked and satellite information can be adequately acquired only at a small range of sky visibility.

Abstract: An optical frequency converter using reciprocating modulation includes a device that, taking n as a predetermined integer of 1 or more, modulates light of a predetermined frequency to produce an nth order sideband group thereof, a device that modulates the nth order sideband group to produce an (n+1)th order sideband group, and a device that selects a specific sideband from a plurality of sideband groups.

Abstract: A method for controlling a hyper-redundant manipulator including a plurality of links coupled by joints by determining the shape the manipulator takes when the end of the manipulator is moved to a target position, includes modeling each link as an elastic body having a natural length and a suitable modulus of elasticity that enables the elastic body to stretch and contract, simulating the overall shape of the manipulator when the end has been moved to the target position with the joints locked at a freezed angle and the joints are unlocked to return each link to its natural length, and moving the manipulator end to the target position by controlling each joint angle to match the simulation outcome.

Abstract: A robot-arm telemanipulating system that presents an operator auditory information converted from a part of information on operating status of the robot arm (hereinafter referred to as “telemetry data”) transmitted from a distant position from the operator, so that a burden imposed on the operator can be alleviated. The telemanipulating system includes a sound source for simulatively generating an operating sound of the robot arm under telemanipulation, capable of variably controlling at least one of key, volume and tone of the operating sound by sound source control data input from outside; a telemetry data analyzing unit for analyzing telemetry data transmitted from the robot arm, and controlling the sound source by generating sound source controlling data corresponding to a load amount applied to the robot arm; and an audio output unit for presenting the operator the operating sound generated by the sound source in a form of auditory information.

Abstract: A quantum switch teleportation system contains one pair of two-mode squeezed light source devices that generate a pair of two-mode squeezed lights, and two receiving devices. The user can switch or select the receiving device to which information will be provided based on a difference in entanglement conditions of the pair of two-mode squeezed lights.

Abstract: Here are provided rainfall intensity output means adapted to output rainfall intensity R as a value equivalent to a linear function of altitude H: R(H)=aH+b, and processing means adapted to identify parameters a and b in the above estimate equation by regression analysis using a measurement value obtained by rainfall vertical distribution. This invention provides thereby method and system for estimation of rainfall distribution based on rainfall spatial distribution in mountainous area.

Abstract: The present invention enables control to be prioritized based on data content over a network such as the Internet. In the present invention, a data sending unit adds metadata relating to data content upon data, decides priority of resources based on metadata while referring to a metapolicy, generates a packet, and sets priority at a part of the header information of the packet. A data transmission unit then refers to a DSCP table and then transmits or discards the packet based on communication control based on priority set at the packet.

Abstract: An atomic fountain apparatus laser trapping, cooling and tossing upward atoms with a plurality of laser beams comprises a collimation laser generating section and a microwave resonator. The atoms fall back through a microwave resonator are observed. The collimation laser generating section generates a laser beam of a frequency that does not resonate with the atoms. The collimation laser beam output by the collimation laser generating section is applied to the atoms in the direction of the tossed atoms, and the switch is turned off before the atoms reaches the microwave resonator.

Abstract: In order to utilize several radio communication systems with a radio terminal 1, by preparing the common modulator and demodulator part 2a and reconfigurable modulator and demodulator part 2b in advance and performing function selection means 4 with specified means of differential information 5 which information consists of the list of differential specification information of each radio communication system such as the tap coefficients of filter, frame format and the like, and their hardware address to allocate the information into digital signal processing hardware, the required radio communication systems are realized as users like.

Abstract: Novel dendritic molecules are provided which respond immediately by emission of light when stimulated with light or electric energy, and are useful, for example, as switching material of memory. The dendritic molecules have a core, a branch structure composed of Unit 1 represented by the following formula: wherein, ring A stands for a homo or heterocyclic six membered ring, optionally other branched structures, and surface functional groups as essential constituents.

Abstract: This photodetection device detects incident light with high sensitivity. The photo-detecting device is comprised of a photodetector for detecting incident light, an input J FET for reading out of the sensing signal from the photodetector, an amplifier for amplifying the signal detected by the input J FET, a feed-back circuit for feeding of the output of the amplifier back to the gate of the input J FET through a feed-back capacitor, a reset circuit for resetting the feed-back capacitor by discharging it with the aid of a reset MOS FET and a circuit of a switch and resistor. The same level voltage as the gate voltage of the input J FET is applied to its source (or drain) through a resistor, and the circuit of switch and the resistor is connected between the source (or drain) of the reset MOS FET and the feed-back capacitor. The reset MOS FET and switch are controlled so that the reset MOS FET is turned “on” and “off” while the switch S2 is “on”.

Abstract: The present invention relating to a device and method for multiplication of repetition frequency in optical pulse trains. The device and the method multiply repetition frequency of optical pulse train generated with ML-FRL with high stability. The device comprises an optical fibre ring composed of optical fibres, an optical amplifier and a modulator for optically modulating, and an electric signal generator generating high frequency signals. The device generates an optical pulse train of repeating frequency of fm, when applying electric signals of frequency of fm to the modulator. In addition to the construction, the stabilised optical pulse generator comprises a filter passing through frequencies of integer multiple of the applied modulation frequency fm, and a composite cavity composed of a plurality of optical fibres of which lengths are different each other.

Abstract: The apparatus according to the present invention stores examples constituted by an article, a summary of the article and an evaluation of the summary in a solution data storage unit. Groups of sets of solutions and features are extracted from the stored examples and what kind of solution is the most straightforward for which case is learned using machine learning techniques, with the results of this learning being stored in the learning results data storage unit. Sets of features are then extracted from the inputted summary and what kind of solution is the most easily attained in the case of the extracted set of features is extrapolated and outputted as an evaluation.

Abstract: A method for displaying simulated 3D space as an image includes the steps presenting a different image to each eye of a viewer by use of a 3D image display apparatus having an image display section, and using a convex lens to present as a real image within reach of the viewer's hands a 3D image produced from the images displayed at the image display section by parallax between the eyes. A device is provided for carrying out the method.