Mitsubishi Electric

About: Mitsubishi Electric is a company organization based out in Ratingen, Germany. It is known for research contribution in the topics: Signal & Voltage. The organization has 23024 authors who have published 27591 publications receiving 255671 citations. The organization is also known as: Mitsubishi Electric Corporation & Mitsubishi Denki K.K..

Motor for electric power steering device

Abstract: A motor for an electric power steering device, includes: a housing side bearing which is placed on the output side of a shaft of a rotor placed in a frame, and is supported by a housing connected to the frame; and a frame side bearing which is placed on the opposite output side of the shaft of the rotor, and is composed of an outer ring and an inner ring supported by the frame. The motor is controlled by an electronic control unit which is coaxially placed with the rotor, the motor including: a bearing box which supports the frame side bearing, and is formed with a closed end section between the closed end section and the side of the frame side bearing; an axial elastic body which is placed on the closed end section of the bearing box, and applies a preload in an axial direction to the outer ring of the frame side bearing; and a radial elastic body which is placed on the outer circumferential side of the outer ring of the frame side bearing, and applies a preload in a direction perpendicular to the axial direction.

Mobile telephone switching office

Abstract: A mobile telephone switching office for switching telephone calls among landline subscribers and mobile subscribers, the office controlling the call origination, termination and release of call from both the landline and the mobile subscribers, and providing a separation between the elements associated with each function for regulatory purposes. The mobile telephone switching office includes a time slot interchange mobile switch network for switching voice information among landline and mobile subscribers. A call control processor controls the switch network. Calls with a mobile subscriber are controlled by the cell site through a serving area controller, which transfers control messages between one or more cell sites to which it is connected and the call control processor. The serving area controller maintains records of the mobile voice channels available through the cell sites connected to it and the mobile calls taking place at any given time.

Spreading sequences for uplink and downlink MC-CDMA systems: PAPR and MAI minimization

Abstract: This paper deals with spreading sequences selection for downlink and uplink Multi-Carrier Code Division Multiple Access (MC-CDMA) systems with the aim of minimizing the dynamic range of the transmitted multicarrier signal envelope and the multiple access interference. The crest factor of orthogonal and non-orthogonal sequences are compared analytically and by simulation for downlink and uplink phase shift keying MC-CDMA transmissions. Then, in order to minimize the multiple access interference produced by frequency selective channels, an optimized spreading sequence allocation procedure is presented. Finally, a selection of the spreading codes which jointly reduces the multiple access interference and the crest factor is proposed for downlink MC-CDMA systems.

A 288-kb fully parallel content addressable memory using a stacked-capacitor cell structure

Abstract: A 288-kb (8 K words*36 b) fully parallel content addressable memory (CAM) LSI using a compact dynamic CAM cell with a stacked-capacitor structure and a novel hierarchical priority encoder is described. The stacked-capacitor structure results in a very compact dynamic CAM cell (66 mu m/sup 2/) which is operationally stable. The novel hierarchical priority encoder reduces the circuit area and power dissipation. In addition, a new priority decision circuit is introduced. The chip size is 10.3 mm*12.0 mm using a 0.8- mu m CMOS process technology. A typical search cycle time of 150 ns and a maximum power dissipation of 1.1 W have been obtained using circuit simulation. In fabricated CAM chips, the authors have verified the performance of a search operation at a 170-ns cycle and have achieved a typical read/write cycle time of 120 ns. >

Adding a collaborative agent to graphical user interfaces

Abstract: We have implemented a collaborative agent toolkit called Collagen and used it to build a software agent that collaborates with the user of a direct-manipulation graphical interface by following the rules and conventions of human discourse. One of the main results is an interaction history that is segmented according to the structure of the agent's and user's goals, without requiring the agent to understand natural language.