Institution
Mitsubishi Electric
Company•Ratingen, Germany•
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..
Topics: Signal, Voltage, Layer (electronics), Heat exchanger, Laser
Papers published on a yearly basis
Papers
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TL;DR: In this article, the optical structures and luminous properties of light source devices composed of blue LEDs and YAG phosphor were examined using optical simulation, and it was shown that using light reflected from the phosphor is an effective way of obtaining high output from light sources composed of LEDs and phosphor.
Abstract: The optical structures and luminous properties of light source devices composed of blue LEDs and YAG phosphor were examined using optical simulation. Results showed that the reflection-type light source device had a high luminous flux over 1.5 times greater than the transmission-type light source device. This suggests that using light reflected from the phosphor is an effective way of obtaining high output from light sources composed of LEDs and phosphor.
68 citations
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31 Oct 2007TL;DR: In this article, a 4:0:0 format was proposed to include data for one picture in one access unit and makes it possible to set the same time information or the same set encoding modes among the respective color components.
Abstract: The present invention makes it possible to include, when encoding processing is applied to three color components using a 4:0:0 format, data for one picture in one access unit and makes it possible to set the same time information or the same set encoding modes among the respective color components. In an image encoding system for applying compression processing to an input image signal including a plurality of color components, encoded data obtained by independently subjecting an input image signal of each of the color components to encoding processing and a parameter indicating which color component the encoded data corresponds to are multiplexed with a bit stream. In an image decoding system for inputting a bit stream in which an image signal including a plurality of color components is compressed to perform decoding processing, decoding processing of the encoded data of each of the color components is performed using a parameter indicating which color component the encoded data corresponds to.
68 citations
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TL;DR: In this paper, the first oscillation of an all solid-state FSF laser was demonstrated, and it turned out experimentally that the oscillation spectrum consists of a continuously chirped comb of frequency components.
Abstract: A laser cavity closed via the first-order diffracted light of an acoustooptic modulator is referred to as a frequency-shifted feedback laser (FSF laser). This laser exhibits outstanding features in its oscillation spectrum. We previously demonstrated the first oscillation of an all solid-state FSF laser, and it turned out experimentally that the oscillation spectrum consists of a continuously chirped comb of frequency components. Furthermore, we have been investigating oscillation dynamics both experimentally and analytically for a better understanding of FSF laser. Here experimental results and analyses on the spectral characteristics of the laser are discussed.
68 citations
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TL;DR: In this paper, the relationship between phase current and carrier harmonic iron loss for a permanent-magnet synchronous motor (PMSM) in the low-torque region is investigated.
Abstract: This paper investigates a method to increase fuel economy of motors for an electric vehicle (EV) traction system. The low-torque region of an EV motor is frequently used in everyday urban driving and in fuel economy measurement. Pulsewidth modulation (PWM) carrier harmonic iron loss accounts for a high percentage of total loss for EV motors in this region. This paper reveals the relationship between phase current and carrier harmonic iron loss for a permanent-magnet synchronous motor (PMSM) in the low-torque region. Thus, a novel carrier harmonic loss reduction technique is proposed and applied to two sets of three-phase windings for a concentrated winding PMSM. The loss is successfully reduced in a 70-kW EV motor as well as a two-dimensional finite-element method (2-D-FEM) calculation. The efficiency of the developed motor is calculated and compared with that of a conventional motor in the JC08 mode driving cycle.
67 citations
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16 Jan 2015
TL;DR: A silicon carbide semiconductor device consisting of a substrate and a drift layer is described in this paper, where the doping concentration in the breakdown voltage holding layer continuously increases from the modulation point to the surface of the drift layer.
Abstract: A silicon carbide semiconductor device capable of achieving a decrease in ON resistance and an increase in breakdown voltage and a method for manufacturing a silicon carbide semiconductor device. A silicon carbide semiconductor device includes a silicon carbide substrate and a drift layer. The drift layer includes a breakdown voltage holding layer extending from a point where a doping concentration has a predetermined value to a surface of the drift layer. The doping concentration in the breakdown voltage holding layer continuously decreases from the point where the doping concentration has the predetermined value to a modulation point located further toward the surface of the drift layer than a midpoint in a film thickness direction of the breakdown voltage holding layer. The doping concentration in the breakdown voltage holding layer continuously increases from the modulation point to the surface of the drift layer.
67 citations
Authors
Showing all 23025 results
Name | H-index | Papers | Citations |
---|---|---|---|
Ron Kikinis | 126 | 684 | 63398 |
William T. Freeman | 113 | 432 | 69007 |
Takashi Saito | 112 | 1041 | 52937 |
Andreas F. Molisch | 96 | 777 | 47530 |
Markus Gross | 91 | 588 | 32881 |
Michael Wooldridge | 87 | 543 | 50675 |
Ramesh Raskar | 86 | 670 | 30675 |
Dan Roth | 85 | 523 | 28166 |
Joseph Katz | 81 | 691 | 27793 |
James S. Harris | 80 | 1152 | 28467 |
Michael Mitzenmacher | 79 | 422 | 36300 |
Hanspeter Pfister | 79 | 466 | 23935 |
Dustin Anderson | 78 | 607 | 28052 |
Takashi Hashimoto | 73 | 983 | 24644 |
Masaaki Tanaka | 71 | 860 | 22443 |