Patents Assigned to MItsubish Denki Kabushiki Kaisha
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Publication number: 20090020372Abstract: An elevator control system high in security and capable of enhancing operation efficiency is realized.Type: ApplicationFiled: October 21, 2004Publication date: January 22, 2009Applicant: MITSUBISH DENKI KABUSHIKI KAISHAInventor: Masaaki Amano
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Publication number: 20080181764Abstract: In an air conditioner, reverse inhalation is prevented while broad band noise and wind sound are reduced. There are provided a projection 12b arranged at the leading end of a stabilizer 12 on the downstream side of an air stream F flowing along a surface 12a of the stabilizer opposing an impeller so as to protrude toward the impeller to define the shortest distance to the impeller, and a plurality of grooves 12e or projections provided on the opposing surface on the upstream side of the projection 12b so as to disturb the air stream flowing along the opposing surface 12a. The positions of the grooves 12e or the projections are arranged apart in a rotational axis direction E. A plurality of convex portions are provided so as to disturb an air stream flowing along a surface of a casing opposing the impeller, and the positions of the convex portions are arranged apart in the rotational axis direction of the impeller.Type: ApplicationFiled: September 14, 2005Publication date: July 31, 2008Applicant: MITSUBISH DENKI KABUSHIKI KAISHAInventors: Seiji Hirakawa, Shoji Yamada, Akira Takamori, Mitsuhiro Shirota, Toshiaki Yoshikawa, Takashi Ikeda, Hiroki Okazawa
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Patent number: 7031415Abstract: The invention concerns a method of receiving a signal transmitted by a transmitter (k) and arriving at an array of antennae (300) after having propagated along a plurality of paths (i), comprising a filtering stage (310k) decomposing each antenna signal into separate signals (xl,i,k) issuing from the different paths, a channel formation step (320k) forming path signals (yi,k) from the said separate signals by means of a first set of complex coefficients (bl,i,k), a combination step (340k) linearly combining the said path signals by means of a second set of complex coefficients (ci,k) in order to supply a combined signal (zk), the method being characterized in that a plurality of first error signals (??i,k) are formed (331k) between a reference value (qk) of the signal transmitted and the said path signals (yi,k) and in that a second error signal (??k) is formed (351k) between the said reference value and the said combined signal (zk), the first and second sets of complex coefficients being adapted (330k, 350kType: GrantFiled: August 22, 2001Date of Patent: April 18, 2006Assignee: MItsubish Denki Kabushiki KaishaInventor: David Mottier
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Publication number: 20040252112Abstract: In forward scanning, a timing control unit outputs the display data in the same sequence as the input display data. In backward scanning, on the other hand, the timing control unit inverts the output sequence of the display data for one line (for one horizontal cycle). Upon input of a scan direction control signal indicating backward scanning, the timing control unit executes sequence change processing by using line memory. The display data in which the sequence of the pixel data is reversed is outputted together with the control signals. It is able to select whether to output data in an inverted sequence or in a normal sequence according to the scan direction control signal.Type: ApplicationFiled: June 4, 2004Publication date: December 16, 2004Applicant: Mitsubish Denki Kabushiki KaishaInventors: Takayuki Fukuda, Hirofumi Iwanaga, Jiro Takaki
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Publication number: 20040062507Abstract: A semiconductor optical device includes a waveguide layer (10) and a reflecting multi-layer film (20). The waveguide layer includes two cladding layers and an active layer sandwiched between the two cladding layers. The reflecting multi-layer film is formed on at least one of a pair of opposing end faces of the waveguide layer. A summation &Sgr;nidi of products nidi of refractive index ni and film thickness di of a layer denoted with i in the reflecting multi-layer film, and a wavelength &lgr;0 of light guided through the waveguide layer satisfies a relationship, &Sgr;nidi>&lgr;0/4. A first wavelength bandwidth &Dgr;&lgr; is wider than a second wavelength bandwidth &Dgr;&Lgr;. The &Dgr;&lgr; is a wavelength range including the wavelength &lgr;0 in which a reflectance R of the reflecting multi-layer film is not higher than +2.0% from reflectance R at the wavelength &lgr;0.Type: ApplicationFiled: September 24, 2003Publication date: April 1, 2004Applicant: MItsubish Denki Kabushiki KaishaInventors: Kimio Shigihara, Kazushige Kawasaki
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Publication number: 20030174592Abstract: A MD loading mechanism for a multidisk MD reproducing apparatus capable of storing a plurality of MDs and of reproducing information recorded on the plurality of MDs successively comprises: a plurality of cartridge holders for holding MD cartridges therein, respectively; a MD cartridge storage unit for storing the plurality of cartridge holders therein in a stack so that the back end surfaces of the MD cartridges held within the cartridge holders can be seen from outside, provided with a plurality of insertion slots through which the MD cartridges are inserted in the cartridge holders and cartridge holder locking means for locking the cartridge holders within the MD cartridge storage unit; and a cartridge holder transfer means for transferring the cartridge holder holding a desired MD cartridge from the MD cartridge storage unit to the MD reproducing apparatus.Type: ApplicationFiled: April 14, 2003Publication date: September 18, 2003Applicant: Mitsubish Denki Kabushiki KaishaInventors: Yasuyuki Nakanishi, Koutarou Oka, Kei Shirahata, Shigehiro Itou, Tatsunori Fujiwara
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Patent number: 6611225Abstract: A radar signal processing apparatus has a range gate for extracting range gate data sequences from a memory, a first frequency extraction section which extracts a beat frequency corresponding to a target by performing frequency analysis by FFT at a low computation load and with low frequency measurement accuracy on all range gate data sequences extracted by the range gate, a second frequency extraction section which extracts a beat frequency corresponding to the target by performing frequency analysis by FFT at a high computation load and with high frequency measurement accuracy only on the range gate data sequence from which a beat frequency has been extracted by the first frequency extraction section, and a distance and speed derivation section which obtains the relative distance and the relative speed of the target on the basis of the beat frequency extracted by the second frequency extraction section.Type: GrantFiled: May 3, 2002Date of Patent: August 26, 2003Assignee: Mitsubish Denki Kabushiki KaishaInventors: Masashi Mitsumoto, Takahiko Fujisaka, Koichi Kai
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Patent number: 6461447Abstract: A substrate having a surface on which silicon is epitaxially grown; wherein the substrate is cut from an oxygen induced stacking fault generation area of a single crystal silicon rod grown by the Czochralski method.Type: GrantFiled: June 30, 2000Date of Patent: October 8, 2002Assignee: Mitsubish Denki Kabushiki KaishaInventors: Hiroshi Shinyashiki, Hiroshi Koya, Tomonori Yamaoka, Kazuhito Matsukawa, Yasuhiro Kimura, Hidekazu Yamamoto
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Publication number: 20020116103Abstract: A failure diagnosis apparatus for a vehicle enables communications between a gateway, which automatically and effectively collects information on a condition of a vehicle having a plurality of network buses, and an information center outside the vehicle in an automatic and efficient manner. A failure diagnosis section is mounted on the gateway installed on the vehicle. The vehicle-installed gateway has a connecting section for connection to information communications terminals such as portable telephones through wireless communications. In addition, the vehicle-installed gateway has a protection processing section for performing security processing on possession information possessed by the gateway.Type: ApplicationFiled: June 26, 2001Publication date: August 22, 2002Applicant: MITSUBISH DENKI KABUSHIKI KAISHAInventors: Takanori Matsunaga, Toshinori Matsui, Takashi Maeda, Hiroshi Fujioka
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Patent number: 6417726Abstract: A reference potential is generated according to a potential Viconst output from a constant current control circuit, and an internal power supply potential is generated based on the reference potential. Fuse elements are provided in the constant current control circuit. Since the resistance value of a resistance circuit can be adjusted, an internal power supply potential can be adjusted in a wider range than that in a conventional circuit. Reduction in yield can be prevented in the case where a threshold voltage or the like is varied.Type: GrantFiled: May 2, 2001Date of Patent: July 9, 2002Assignee: Mitsubish Denki Kabushiki KaishaInventor: Osamu Kitade
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Publication number: 20020008502Abstract: In a VDC circuit, a differential amplifier compares a first reference potential with an internal supply potential to generate a control signal according to a result of the comparison. A constant current source transistor receives at its gate a second reference potential supplied through a path different from that of the first reference potential to operate for controlling an operation current value of the differential amplifier. A drive transistor changes conductance between a node for outputting the internal supply potential and a supply potential according to the control signal.Type: ApplicationFiled: January 19, 2001Publication date: January 24, 2002Applicant: Mitsubish Denki Kabushiki Kaisha and Mitsubish Electric Engineering Company LimitedInventors: Mihoko Akiyama, Fukashi Morishita, Akira Yamazaki, Yasuhiko Taito, Mako Kobayashi, Nobuyuki Fujii
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Patent number: 5596592Abstract: A semiconductor laser device includes a ridge waveguide having two side surfaces, a crystalline burying layer disposed at both side surfaces of the ridge waveguide, and a second conductivity type contact layer disposed on the burying layer and the ridge waveguide. The burying layer includes a first conductivity type first current blocking layer in contact with the side surfaces of the ridge waveguide, a second conductivity type second current blocking layer disposed on a portion of the first current blocking layer and separated from the ridge waveguide by a portion of the first current blocking layer near the ridge waveguide, a first conductivity type third current blocking layer disposed on a portion of the first current blocking layer near the ridge waveguide and on the second current blocking layer, and a second conductivity type final burying layer disposed on the third current blocking layer.Type: GrantFiled: August 14, 1995Date of Patent: January 21, 1997Assignee: Mitsubish Denki Kabushiki KaishaInventors: Yoriko Tanigami, Tomoko Kadowaki, Akira Takemoto
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Patent number: 5578749Abstract: An throttle-opening detecting apparatus for an internal combustion engine includes a fully-closed state value learning unit for storing and updating as a fully-closed state learned value a minimum value of an output of a throttle-opening sensor, and a judgment unit for judging the fully closed state of the throttle valve based on comparison of the throttle-opening sensor output and the fully-closed state learned value. The judgment unit includes a first element for judging the throttle valve as being in the fully closed state when the throttle-opening sensor output is less than a first judging value which is obtained by adding a first threshold value to the learned value, and a second element for judging, when the throttle-opening sensor output is greater than the first judging value and less than a second judging value which is obtained by adding a second threshold value to the learned value, the throttle valve as being in the fully closed state after lapse of a predetermined time.Type: GrantFiled: March 26, 1996Date of Patent: November 26, 1996Assignee: Mitsubish Denki Kabushiki KaishaInventor: Shinichi Mogaki
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Patent number: 5107114Abstract: A fine scanning mechanism for an atomic force microscope includes a three-dimensionally displaceable cylindrical piezolectric element, a first probe attaching portion attached to an end of the said cylindrical piezoelectric element, a first probe attached to the first probe attaching portion, a bimorph piezoelectric element attaching portion attached to the end of the cylindrical piezoelectric element, a one-dimensionally displaceable bimorph piezoelectric element attached to the bimorph piezoelectric element attaching portion, a cantilever attaching portion attached to a side of the one-dimensionally displaceable bimorph piezoelectric element, the cantilever having a displacement portion and being attached to the cantilever attaching portion, a second probe attaching portion attached to a side of the displacement portion of the cantilever, a second probe attached to the second probe attaching portion, and a stationary sample tray disposed opposite the second probe.Type: GrantFiled: April 15, 1991Date of Patent: April 21, 1992Assignee: Mitsubish Denki Kabushiki KaishaInventors: Tadashi Nishioka, Takao Yasue, Hiroshi Koyama
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Patent number: 4719088Abstract: Apparatus for removing an acidic component from a gas comprising two absorption columns for washing a crude gas by using two concentrations of alkali-containing aqueous solutions. The alkali-containing solution used in the first step has a pH of 6-13 and the solution used in the second step has a 0.3-2.5 N concentration. A specific gravity control device is used to control the concentration of the solution circulated for the second step. A pH control device is used to control the pH of the solution circulated for the first step. The pH control device controls a valve which regulates the addition of the second step solution into the tank of the first step solution as needed.Type: GrantFiled: February 11, 1986Date of Patent: January 12, 1988Assignees: Mitsubish Denki Kabushiki Kaisha, Taiyo Sanso Kabushiki KaishaInventors: Fumio Itoh, Tutomu Sasaki, Ikuhisa Kanoh, Takaaki Fukumoto