Mitsubishi Electric Corporaiton Patent applications |
Patent application number | Title | Published |
20150229472 | CRYPTOGRAPHIC SYSTEM - An inner-product predicate encryption scheme with improved flexibility without a restriction that the dimensions of an attribute vector x | 08-13-2015 |
20130199762 | AIR CONDITIONER - To increase a heat exchange capacity of an indoor heat exchanger without increasing a pressure loss inside tubes of an outdoor heat exchanger. A heat exchanger is constituted by an indoor machine equipped with an indoor heat exchanger | 08-08-2013 |
20120296507 | PROPULSION CONTROL APPARATUS - In a configuration in which an auxiliary power supply is connected to an intermediate link circuit of a main conversion unit, intermediate link voltage as input voltage of the auxiliary power supply is set at higher voltage depending on the main conversion unit as a main unit, and loss generated in a main circuit element of the auxiliary power supply increases; therefore, a problem has occurred that a cooling unit has to be increased in size. The main conversion unit recognizes a low-speed and stop state by monitoring a vehicle speed, and varies the intermediate link voltage corresponding to the vehicle speed; thereby, the loss generated in the main circuit element of the auxiliary power supply is reduced at the low-speed and stop state where cooling ability is decreased; as a result, small sizing and light weighting of the cooling unit is achieved. | 11-22-2012 |
20110164037 | AERIAL IMAGE GENERATING APPARATUS, AERIAL IMAGE GENERATING METHOD, AND STORAGE MEDIUM HAVNG AERIAL IMAGE GENERATING PROGRAM STORED THEREIN - An apparatus and method generating a road image including no features such as trees and tunnels hiding or covering a road surface. A mobile measuring apparatus installed in a vehicle may acquire a distance and orientation point cloud, a camera image, GPS observation information, a gyro measurement value, and an odometer measurement value, while moving in a target area. The position and attitude localizing apparatus may localize the position and attitude of the vehicle based on the GPS observation information, the gyro measurement value and the odometer measurement value. The point cloud generating apparatus may generate a point cloud based on the camera image, the distance and orientation point cloud, and a position and attitude localized value. The point cloud orthoimage generating apparatus may extract points close to a road surface exclusively from the point cloud by removing points higher than the road surface, orthographically project each extracted point onto a horizontal plane, and generate a point cloud orthoimage. The point cloud orthoimage may show the road surface including no features covering or hiding the road surface. | 07-07-2011 |
20100280683 | TRAIN INFORMATION MANAGEMENT DEVICE - It is an object to provide a train information management system that performs high-order priority processing of brake commands without using a relay, and that achieves improved redundancy, enables high-speed processing, and achieves high reliability with a simple configuration. For that, by performing high-order priority processing of brake notches that are created by an ATC system, an automatic train stop, and a manual braking device without using a relay, but by performing comparison processing based on logic by a train information management system, the improved redundancy, the high-speed processing, and the high reliability are achieved. | 11-04-2010 |
20100259207 | CONTROL APPARATUS OF ALTERNATING-CURRENT MOTOR - A control apparatus of an alternating-current motor includes an inverter which is connected to a direct-current source and outputs three-phase alternating currents to the alternating-current motor, a current detector which detects a current of the alternating-current motor, a voltage command/PWM signal generation unit which calculates an output voltage command of the inverter based on a signal from the current detector and generates a pulse width modulation signal to control a switching element arranged in the inverter based on the output voltage command, and a motor current imbalance compensation unit which generates a motor current imbalance compensation amount based on the current detected by the current detector. The pulse width modulation signal is directly or indirectly adjusted at the voltage command/PWM signal generation unit based on the motor current imbalance compensation amount in accordance with a driving state of the inverter. | 10-14-2010 |