Patents by Inventor Makoto Murakami

Makoto Murakami has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7860475
    Abstract: A multiplication section multiplies a signal output from a GPS antenna by a local oscillation signal generated by a local oscillation signal generation section to down-convert the signal output from the GPS antenna into an intermediate-frequency signal. A sampling circuit section samples a generated signal generated by a portable electronic circuit using a sampling clock signal having a frequency lower than a frequency of the generated signal. An attenuation section generates a cancellation signal by attenuating the sampled signal, and an addition section adds the cancellation signal to the signal output from the multiplication section to cancel in-band noise superimposed on the received signal.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: December 28, 2010
    Assignee: Seiko Epson Corporation
    Inventor: Makoto Murakami
  • Patent number: 7830303
    Abstract: Integrated correlation values (I and Q integrated correlation values) between each of I and Q signals obtained from a received signal and a code replica are calculated by a coherent integration process performed by a correlation process circuit section 32. A coherent integration enhancement circuit section converts a phase angle ? of each of the I and Q integrated correlation values (IQ coordinate values) into a double angle, and further integrates the converted I and Q integrated correlation values (IQ coordinate values) to calculate I and Q enhanced integrated correlation values. An incoherent integration circuit section performs an incoherent integration process on the I and Q enhanced integrated correlation values. A coherent integration time T1 of the correlation circuit section is set to be 20 ms or less, and an integration time T2 of the coherent integration enhancement circuit section is set to be longer than 20 ms.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: November 9, 2010
    Assignee: Seiko Epson Corporation
    Inventor: Makoto Murakami
  • Patent number: 7803434
    Abstract: Disclosed is a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy, which contains at least one compound of formula I and at least one compound of formula I*, and their use in an electro-optical display.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: September 28, 2010
    Assignee: Merck Patent GMBH
    Inventors: Akihiro Kojima, Fumio Shimano, Makoto Murakami, Jeong Hee Sung
  • Publication number: 20100227133
    Abstract: A method of forming patterns on transparent substrates using a pulsed laser is disclosed. Various embodiments include an ultrashort pulsed laser, a substrate that is transparent to the laser wavelength, and a target plate. The laser beam is guided through the transparent substrate and focused on the target surface. The target material is ablated by the laser and is deposited on the opposite substrate surface. A pattern, for example a gray scale image, is formed by scanning the laser beam relative to the target. Variations of the laser beam scan speed and scan line density control the material deposition and change the optical properties of the deposited patterns, creating a visual effect of gray scale. In some embodiments patterns may be formed on a portion of a microelectronic device during a fabrication process. In some embodiments high repetition rate picoseconds and nanosecond sources are configured to produce the patterns.
    Type: Application
    Filed: March 9, 2009
    Publication date: September 9, 2010
    Applicant: IMRA AMERICA, INC.
    Inventors: Bing Liu, Zhendong Hu, Makoto Murakami, Jingzhou Xu, Yong Che
  • Publication number: 20100196192
    Abstract: Various embodiments include a method of producing chemically pure and stably dispersed metal and metal-alloy nanoparticle colloids with ultrafast pulsed laser ablation. A method comprises irradiating a metal or metal alloy target submerged in a liquid with ultrashort laser pulses at a high repetition rate, cooling a portion of the liquid that includes an irradiated region, and collecting nanoparticles produced with the laser irradiation and liquid cooling. The method may be implemented with a high repetition rate ultrafast pulsed laser source, an optical system for focusing and moving the pulsed laser beams, a metal or metal alloy target submerged in a liquid, and a liquid circulating system to cool the laser focal volume and collect the nanoparticle products. By controlling various laser parameters, and with optional liquid flow movement, the method provides stable colloids of dispersed metal and metal-alloy nanoparticles. In various embodiments additional stabilizing chemical agents are not required.
    Type: Application
    Filed: January 30, 2009
    Publication date: August 5, 2010
    Applicant: IMRA AMERICA, INC.
    Inventors: Bing Liu, Zhendong Hu, Makoto Murakami, Yong Che
  • Patent number: 7765636
    Abstract: A vacuum cleaner includes a dust chamber, a dust bag provided in the dust chamber, and an electric blower for generating suction air flow for drawing and collecting dust and dirt in the dust bag. A deodorant is supplied into the dust bag by the suction air flow and directly attached to the dust and dirt. The deodorant has a granule or powder shape.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: August 3, 2010
    Assignee: Panasonic Corporation
    Inventors: Masanobu Hirota, Hiroyuki Kayama, Makoto Murakami, Koichi Nakano, Hidenori Kitamura, Tomomi Mitani, Takaaki Ogawa, Ryouhei Yoshida
  • Publication number: 20100176341
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy, which contains at least one compound of the formula I and at least one compound of the formula II in which R1, R2, R3, R4, ring A, Z1, Z2 and m are as defined in Claim 1, and to the use thereof for an active-matrix display based on the ECB, VA, PS-VA, FFS, PALC or IPS effect.
    Type: Application
    Filed: May 21, 2008
    Publication date: July 15, 2010
    Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Norihiko Tanaka, Makoto Murakami, Shinji Nakajima
  • Publication number: 20100117393
    Abstract: A structure of storing a vehicular seat according to one aspect of the invention is constituted by a seat detachably connected to a support base, and a storing space capable of storing the seat detached from the support base. The seat includes an engaging member is fixed to the support base by engaging an engaging portion provided at the support base. The storing space includes a bottom wall, side walls erected to an upper side from two left and right side edges of the bottom wall, and a depth wall erected from a depth edge of the bottom wall to the upper side, and is constituted to slide to store the seat. The seat includes fixing means at predetermined positions inside of the storing space. The fixing means are formed by shapes to slidingly receive and to fix the engaging member of the seat.
    Type: Application
    Filed: December 12, 2007
    Publication date: May 13, 2010
    Applicants: TOYOTA BOSHOKU KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hajime Yamashita, Yoshihide Itou, Fukuo Ogiso, Tamotsu Keinaga, Ko Ishikawa, Hideyuki Kato, Susumu Watanabe, Masaya Kometani, Makoto Murakami
  • Patent number: 7701522
    Abstract: An active matrix liquid crystal display device 10 of the present invention includes: a plurality of signal lines Y1, . . . Ym and scanning lines X1, . . . Xn, Xn+1, Xn+2 which are arranged in a matrix state on a substrate; switching transistors 14 arranged near the intersection of each of the signal lines and the scanning lines; and pixel electrodes that are severally arranged in positions surrounded by the signal lines and the scanning lines and connected to the switching transistors, in which the pixel electrode is made up of a pixel electrode for display 12(25) that contributes to display, which is provided in an effective display region, and a dummy pixel electrode 27 that does not contribute to display, which is provided in a non-effective display region, and the dummy pixel electrode has a smaller area than the area of the pixel electrode for display and a plurality of the dummy pixel electrodes are parallelly provided for each signal line.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: April 20, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventors: Akio Ota, Satoshi Morita, Makoto Murakami, Osamu Kobayashi
  • Publication number: 20100027591
    Abstract: A positioning signal reception device receives a positioning signal transmitted from a position information satellite, and includes: a signal reception portion that obtains a reception signal by receiving the positioning signal; an A/D conversion portion that generates a digital signal by converting the reception signal into a digital form; a filter portion that subjects the digital signal to frequency separation, a characteristic of the filter portion being changeable; a filter characteristic change portion that changes the characteristic of the filter portion according to an operating state of the positioning signal reception device and an external environmental condition of the positioning signal reception device; and a code synchronization establishment portion that establishes synchronization of spreading codes contained in the reception signal.
    Type: Application
    Filed: October 6, 2009
    Publication date: February 4, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Makoto MURAKAMI
  • Publication number: 20100026231
    Abstract: An inexpensive, productivity-enhanced single-phase AC synchronous motor in which stabilized synchronous pull-in can be carried out by suppressing generation of counter torque during a starting operation. Starting operation is performed while the energizing range of motor current is suppressed such that the energizing direction of motor current waveform lagging in a phase behind the output waveform from a detection sensor (17) is switched at at least the zero cross point of the output waveform from the sensor when the number of revolutions of a permanent magnet rotor (1) reaches a predetermined number of revolutions in the vicinity of the synchronous number of revolutions.
    Type: Application
    Filed: September 27, 2007
    Publication date: February 4, 2010
    Inventors: Fumito Komatsu, Hideaki Osada, Akira Tooyama, Makoto Murakami
  • Patent number: 7642954
    Abstract: A positioning apparatus that measures a current position by using measurement basis codes carried on satellite waves from a plurality of positioning satellites includes: a first phase error information generating unit that generates first phase error information indicating an error of a first phase on the basis of a frequency difference between a first frequency which is an estimated value of a receiving frequency of the satellite wave and a second frequency which is a frequency corresponding to a maximum value of a correlation value under a condition of the estimated phase; a second phase information generating unit that generates second phase information indicating a second phase by correcting a first phase information on the basis of the first phase error information; and a positioning unit that measures the current position on the basis of the second phase information on at least three of the positioning satellites.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: January 5, 2010
    Assignee: Seiko Epson Corporation
    Inventor: Makoto Murakami
  • Publication number: 20090324257
    Abstract: An optical transmitting station changes a power level of control signal light having a first frequency at a second frequency lower than the first frequency, and transmits the control signal light whose power level has been changed to an optical receiving station through an optical transmission line. The optical receiving station monitors whether signal light components of the second frequency are received through the optical transmission line.
    Type: Application
    Filed: June 25, 2009
    Publication date: December 31, 2009
    Applicant: Fujitsu Limited
    Inventors: Makoto MURAKAMI, Toshihiro Ohtani
  • Publication number: 20090313783
    Abstract: A vacuum cleaner is disclosed, and this cleaner maintains sucking power at a high level while it resists lowering the suction force although it sucks dust. The vacuum cleaner includes a cylindrical dust collecting case which takes air in sucked by an electric air blower and including dust. The case includes a suction port through which the air including dust flows into the case along a tangent line, and a dust collector communicates with the port. A dust filter in the case is placed in an air-duct through which the case communicates with the electric air blower. This structure allows whirling airflow in the case to whirl continuously in the case, so that dust can be removed from the filter even if the dust attaches to the filter. As a result, sucking airflow can be always secured.
    Type: Application
    Filed: March 29, 2007
    Publication date: December 24, 2009
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Koichi Nakano, Tetsuya Kouda, Masanobu Hirota, Makoto Murakami, Masami Fukumoto
  • Patent number: 7620132
    Abstract: A positioning signal reception device receives a positioning signal transmitted from a position information satellite, and includes: a signal reception portion that obtains a reception signal by receiving the positioning signal; an A/D conversion portion that generates a digital signal by converting the reception signal into a digital form; a filter portion that subjects the digital signal to frequency separation, a characteristic of the filter portion being changeable; a filter characteristic change portion that changes the characteristic of the filter portion according to an operating state of the positioning signal reception device and an external environmental condition of the positioning signal reception device; and a code synchronization establishment portion that establishes synchronization of spreading codes contained in the reception signal.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: November 17, 2009
    Assignee: Seiko Epson Corporation
    Inventor: Makoto Murakami
  • Publication number: 20090246530
    Abstract: A method of pulsed laser deposition (PLD) capable of continuously tuning formed-film morphology from that of a nanoparticle aggregate to a smooth thin film free of particles and droplets. The materials that can be synthesized using various embodiments of the invention include, but are not limited to, metals, alloys, metal oxides, and semiconductors. In various embodiments a ‘burst’ mode of ultrashort pulsed laser ablation and deposition is provided. Tuning of the film morphology is achieved by controlling the burst-mode parameters such as the number of pulses and the time-spacing between the pulses within each burst, the burst repetition rate, and the laser fluence. The system includes an ultrashort pulsed laser, an optical system for delivering a focused onto the target surface with an appropriate energy density, and a vacuum chamber in which the target and the substrate are installed and background gases and their pressures are appropriately adjusted.
    Type: Application
    Filed: March 11, 2009
    Publication date: October 1, 2009
    Applicant: IMRA America, Inc.
    Inventors: Makoto Murakami, Zhendong Hu, Yong Che, Bing Liu, Yuzuru Uehara, Zhenlin Liu
  • Publication number: 20090246413
    Abstract: A method of ultrashort pulsed laser deposition (PLD) capable of continuously tuning formed-film morphology from that of a nanoparticle aggregate to a smooth thin film completely free of particles and droplets. The materials that can be synthesized using various embodiments of the invention include, but are not limited to, metals, alloys, metal oxides, and semiconductors. A ‘burst’ mode of ultrashort pulsed laser ablation and deposition is provided, where each ‘burst’ contains a train of laser pulses. Tuning of the film morphology is achieved by controlling the burst-mode parameters such as the number of pulses and the time-spacing between the pulses within each burst, the burst repetition rate, and the laser fluence.
    Type: Application
    Filed: October 20, 2008
    Publication date: October 1, 2009
    Applicant: IMRA America, Inc.
    Inventors: Makoto Murakami, Zhendong Hu, Yong Che, Bing Liu
  • Publication number: 20090225270
    Abstract: The present invention relates to a liquid-crystalline medium having high twist, to the use thereof for electro-optical purposes, and to displays containing this medium.
    Type: Application
    Filed: March 4, 2009
    Publication date: September 10, 2009
    Inventors: Akihiro KOJIMA, Makoto Murakami, Fumio Shimano, Jeong-Hee Sung
  • Publication number: 20090141779
    Abstract: A multipath signal determination method includes carrying out correlation operation between a received signal of a positioning signal spread-modulated with a spread code and a replica signal of the spread code with respect to each of IQ components at a predetermined sampling phase interval, and determining whether the received signal is a multipath signal or not, in accordance with a plot position in the case where each correlation value in each of the sampling phases is sequentially plotted on an IQ coordinate.
    Type: Application
    Filed: December 2, 2008
    Publication date: June 4, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Makoto MURAKAMI
  • Patent number: 7524258
    Abstract: A vehicular automatic transmission including a first planetary gear device and a first set of frictional coupling elements, which can be supported by a pump housing via first and second retainer rings, at predetermined axial positions within the pump housing, during assembling of the automatic transmission. The first retainer ring is fixed to a radially inner spline-fitting part of a cylindrical extending portion of the pump housing, while the second retainer ring is fitted in a first circumferential groove formed in a ring gear of the first planetary gear device and a second circumferential groove formed in the inner circumferential surface of a splined cylindrical portion of a first hub splined to the outer circumferential surface of the ring gear and the radially inner portions of the first set of frictional coupling elements. The automatic transmission is manufactured by assembling a subassembly with respect to a stationary cylindrical housing to which the pump housing is fixed.
    Type: Grant
    Filed: November 6, 2006
    Date of Patent: April 28, 2009
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hirofumi Onishi, Yuji Yasuda, Terufumi Miyazaki, Makoto Murakami