| NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY Patent applications |
| Patent application number | Title | Published |
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| 20110243517 | UNCOUPLED MULTI-CORE FIBER - A multi-core fiber of the present invention employs the multi-core fiber mode, which corresponds to the “uncoupled” operation aspect in which individual cores are used independently for single-mode transmission, to perform space division multiplexing transmission using a multi-core fiber in which multiple single-mode cores are stored in one optical fiber. More specifically, the multi-core fiber of the present invention forms an uncoupled multi-core fiber that makes individual cores correspond to single-mode, independent transmission channels. | 10-06-2011 |
| 20110188855 | COUPLED SYSTEM MULTI-CORE FIBER, COUPLING MODE MULTIPLEXER AND DEMULTIPLEXER, SYSTEM FOR TRANSMISSION USING MULTI-CORE FIBER AND METHOD FOR TRANSMISSION USING MULTI-CORE FIBER - The multi-core fiber of the present invention uses a multi-core fiber configuration, compatible with the “coupled” operation mode in which coupling between cores is positively utilized, to carry out mode division multiplexing transmission via a multi-core fiber that contains multiple single-mode cores in one optical fiber. The multi-core fiber of the present invention uses a configuration in which mode multiplexing transmission is carried out using a multi-core fiber that contains multiple single-mode cores in one optical fiber, wherein multiple cores are strongly coupled intentionally to form a coupled multi-core fiber that makes the coupled modes correspond, one to one, to the transmission channels. | 08-04-2011 |
| 20110132231 | CEMENT ADMIXTURE, AND CEMENT COMPOSITION AND CONCRETE CONTAINING THE CEMENT ADMIXTURE - It is an object of the invention to provide a cement admixture that can form concrete having a sufficient self-healing capability and satisfactorily maintaining its self-healing capability for prolonged periods. The cement admixture of the invention contains an expanding material and an alumina-silicate with swelling properties. The cement admixture is combined with cement to form a cement composition. The cement composition is mixed with water and an aggregate to provide concrete with an excellent self-healing capability. | 06-09-2011 |
| 20110046795 | DRIVE CONTROL METHOD, DRIVE CONTROL APPARATUS, STAGE CONTROL METHOD, STAGE CONTROL APPARATUS, EXPOSURE METHOD, EXPOSURE APPARATUS AND MEASURING APPARATUS - A drive control method of controlling an object which can move at least in a first direction and a second direction different from the first direction is provided. Here, a force applied to the object is controlled on the basis of a driving signal for driving a first actuator moving the object in the first direction and a disturbance correcting signal generated from a disturbance signal in the second direction at an output terminal of the object. | 02-24-2011 |
| 20100322771 | FLUID MACHINE - The present invention provides a rotary-type fluid machine which enables practical and effective operation in an extremely low specific speed range. The rotary-type fluid machine ( | 12-23-2010 |
| 20100319884 | SELF-EXCITED OSCILLATING FLOW HEAT PIPE - A self-excited oscillating flow heat pipe includes a heating unit having a wick therein; a cooling unit filled with a working fluid; a connection channel which rectilinearly connects the heating unit with the cooling unit, and has a smaller channel cross-sectional area than the channel cross-sectional area of the heating unit; a liquid plug protruding into the connection channel from the cooling unit and containing the working fluid; and a vapor plug in the heating unit containing the vaporized working fluid. The liquid plug oscillates self-excitedly in the connection channel. | 12-23-2010 |
| 20100233776 | NOVEL HYDROGEN-PRODUCING BACTERIUM - The present invention aims to provide a hydrogen-producing bacterium, which excels in hydrogen yield and hydrogen production rate, and is usable for industrial hydrogen production from biomass as a production source. That is, it is intended to provide a bacterium belonging to the genus | 09-16-2010 |
| 20100220099 | INTERPOLATION PROCESSING METHOD AND INTERPOLATION PROCESSOR - When an interpolation point is interpolated using a curve/curved surface, represented by control points, such as a B-Spline curve/curved surface or a subdivision surface, interpolation processing is performed in such a way that a moving vector for moving each control point is calculated using position information on interpolation points constituting the point group, as well as vector information on the unit direction vector that is set for each interpolation point, and the control point is moved in the movement direction and for the movement amount of this moving vector. By, repeating the generation step of a curve/curved surface that interpolates the interpolation point and the movement step of the control point, the position of a new control point is found that fits the curve/curved surface to the positions and the unit direction vectors of the point group. | 09-02-2010 |
| 20100018448 | SHIP BUOYANCY CONTROL SYSTEM | 01-28-2010 |
| 20090303235 | INTERPOLATION PROCESSING METHOD, INTERPOLATION PROCESSING DEVICE, SHAPE EVALUATION METHOD, AND SHAPE EVALUATION DEVICE - An initial polygon obtained from a point group is used as a control polygon, and a control point of the control polygon is offset in a normal direction by the shortest distance from a limit surface generated by the control polygon, so that the position of new control point is determined to allow a subdivision surface to interpolate the initial polygon, thereby generating the subdivision surface which interpolates the point group. A first process to determine the point on the subdivision surface at the shortest distance from each control point, and a second process to move and offset the control point in the normal direction from the surface by the distance between the point on the surface and the initial control point, are iterated until the distance between the initial point group and the point on the surface satisfies the threshold or becomes smaller than the threshold, thereby generating the subdivision surface interpolating the initial polygon. Consequently, the subdivision surface interpolating the point group is generated within a short operation time period, without solving a linear system. | 12-10-2009 |
| 20090234783 | VALUE FUNCTION REPRESENTATION METHOD OF REINFORCEMENT LEARNING AND APPARATUS USING THIS - Reinforcement learning is one of the intellectual operations applied to autonomously moving robots etc. It is a system having excellent sides, for example, enabling operation in unknown environments. However, it has the basic problem called the “incomplete perception problem”. A variety of solution has been proposed, but none has been decisive. The systems also become complex. A simple and effective method of solution has been desired. | 09-17-2009 |
| 20080221734 | Categorical Color Perception System - The present invention relates to a categorical color perception system which automatically judges a categorical color and aims to judge a categorical color name correctly under various ambient lights. Test color measured at an experiment is inputted to an input layer portion corresponding to test color components | 09-11-2008 |
