Patents by Inventor Yoshitaka Takahashi

Yoshitaka Takahashi 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: 7227675
    Abstract: A hologram recording medium in which data is recorded at a high density, the input of a reference beam to an area to which data is not to be recorded of a recording layer is prevented when recording data to the hologram recording medium, and an amount of noise when reproducing the data from the hologram recording medium is reduced. The hologram recording medium includes a light velocity restriction member restricting an incidence area of a hologram recording layer, thus restricting the incidence of a reference beam onto the hologram recording layer, preventing the incidence of the reference beam onto an area to which data is not to be recorded of the hologram recording layer when recording data and reproducing the amount of noise when reproducing data.
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: June 5, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ikuo Aoki, Yoshitaka Takahashi
  • Patent number: 7175404
    Abstract: The present invention is an apparatus for filling a multi-powder including a powder box (10) including a plurality of powder chambers storing a plurality of powders whose constituent compositions differ in a divided manner, and a gas feed pipe (14) disposed on the bottom side of the powder chamber and having an introducing hole for introducing a gas, wherein it can fill a plurality of the powders into a cavity (24) at once through the bottom openings of the powder box by introducing a gas through the introducing hole to substantially equalize the respective flow resistances of a plurality of the powders. Thus, it is possible to fill the powders whose constituent compositions differ at once without disposing them in a mixed manner.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: February 13, 2007
    Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyota Jidosha Kabushiki Kaisha
    Inventors: Mikio Kondo, Hiroshi Okajima, Yoshitaka Takahashi
  • Patent number: 7168374
    Abstract: A solid fuel burner using a low oxygen concentration gas as a transporting gas of a low grade solid fuel such as brown coal or the like and a combustion method using the solid fuel burner are provided. The solid fuel burner comprises a means for accelerating ignition of the fuel and a means for preventing slugging caused by combustion ash from occurring. Mixing of fuel and air inside a fuel nozzle 11 is accelerated by that an additional air nozzle 12 and a separator 35 for separating a flow passage are arranged in the fuel nozzle 11, and the exit of the additional air nozzle 12 is set at a position so as to overlap with the separator 35 when seeing from a direction perpendicular to a burner axis, and additional air is ejected in a direction nearly perpendicular to a flow direction of a fuel jet flowing through the fuel nozzle 11. An amount of air from the additional air nozzle 12 is varied corresponding to a combustion load.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: January 30, 2007
    Assignees: Hitachi, Ltd., Babcock-Hitachi K.K.
    Inventors: Hirofumi Okazaki, Masayuki Taniguchi, Toshikazu Tsumura, Yoshitaka Takahashi, Kouji Kuramashi
  • Patent number: 7158521
    Abstract: In a synchronization system adopted in a synchronous-multisystem control apparatus comprising a plurality of systems operating synchronously with each other at a fixed control period, the synchronous-multisystem control apparatus can be operated in a single-system mode in the event of failures occurring simultaneously in some of the systems. The synchronous-multisystem control apparatus employs a plurality of control circuits each provided for one of the systems.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: January 2, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Yuichiro Morita, Kotaro Shimamura, Yoshitaka Takahashi, Takashi Hotta, Kazuhiro Imaie, Shigeta Ueda, Akira Bando, Mitsuyasu Kido, Takeshi Takehara
  • Publication number: 20060221799
    Abstract: A polarizing beam splitter for separating an upstream beam from a downstream beam according to the polarization of an incident beam is provided between first and second light sources emitting laser beams at respective wavelength and an objective lens. A phase plate for providing a phase difference to a beam incident on the polarizing beam splitter is provided between the polarizing beam splitter and the light sources. A portion of the laser beam incident on the polarizing beam splitter is reflected by the polarizing beam splitter and caused to be incident on a photo-detecting unit, so as to prevent an unnecessary portion of the laser beam is incident on the photo-detecting unit. According to the invention, the laser beam is used efficiently and the cost of fabricating an optical disk apparatus is reduced by eliminating a need for a gain controlling circuit in the photo-detecting unit.
    Type: Application
    Filed: June 6, 2006
    Publication date: October 5, 2006
    Inventors: Yoshitaka Takahashi, Hiroshi Akiyama
  • Patent number: 7088645
    Abstract: A polarizing beam splitter for separating an upstream beam from a downstream beam according to the polarization of an incident beam is provided between first and second light sources emitting laser beams at respective wavelength and an objective lens. A phase plate for providing a phase difference to a beam incident on the polarizing beam splitter is provided between the polarizing beam splitter and the light sources. A portion of the laser beam incident on the polarizing beam splitter is reflected by the polarizing beam splitter and caused to be incident on a photo-detecting unit, so as to prevent an unnecessary portion of the laser beam is incident on the photo-detecting unit. According to the invention, the laser beam is used efficiently and the cost of fabricating an optical disk apparatus is reduced by eliminating a need for a gain controlling circuit in the photo-detecting unit.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: August 8, 2006
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshitaka Takahashi, Hiroshi Akiyama
  • Publication number: 20060074549
    Abstract: A terminal apparatus of the present invention having a position detection unit and a display unit further includes a geographic information storage unit for storing three-dimensional terrain shape information, an attitude detection unit for detecting the attitude of the terminal apparatus, and an image creation unit for obtaining information on a vector vertical to the display unit based on information on the attitude obtained by the attitude detection unit and creating a three-dimensional terrain image at a viewpoint using a current position obtained by the position detection unit, information on a line-of-sight defined by the information on the vector, and the three-dimensional terrain shape information in the geographic information storage unit. When the attitude of the terminal apparatus is changed, the three-dimensional terrain image on the display unit is updated, following a change in the attitude of the terminal apparatus.
    Type: Application
    Filed: August 19, 2005
    Publication date: April 6, 2006
    Applicant: Hitachi, Ltd.
    Inventors: Yoshitaka Takahashi, Munetoshi Unuma, Takeshi Horie, Fumitaka Otsu
  • Publication number: 20060028702
    Abstract: A hologram recording medium in which data is recorded at a high density, the input of a reference beam to an area to which data is not to be recorded of a recording layer is prevented when recording data to the hologram recording medium, and an amount of noise when reproducing the data from the hologram recording medium is reduced. The hologram recording medium includes a light velocity restriction member restricting an incidence area of a hologram recording layer, thus restricting the incidence of a reference beam onto the hologram recording layer, preventing the incidence of the reference beam onto an area to which data is not to be recorded of the hologram recording layer when recording data and reproducing the amount of noise when reproducing data.
    Type: Application
    Filed: July 27, 2005
    Publication date: February 9, 2006
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ikuo Aoki, Yoshitaka Takahashi
  • Patent number: 6976440
    Abstract: A fuel supply duct, which supplies a mixed fluid of a solid fuel and carrier gas to one or more burners provided on the walls of a furnace, is provided with a branching part, and each of a plurality of branch ducts, which branch out from the branching part, is connected to a corresponding burner. Also a damper, with which the tilt angle with respect to the direction of flow of the mixed fluid can be changed, is positioned in the fuel supply duct at the upstream side of the branching part so that a mutual difference will arise in the solid fuel concentrations of the mixed fluid supplied to the respective branch ducts. A fuel distributor for fuel supply duct is thus arranged. The tilt angle of the above-mentioned damper is adjusted to increase the concentration of solid fuel in the mixed fluid supplied to a specific burner. At a burner to which the high solid fuel concentration is supplied, stability of ignition and stable combustion of the ignited flame can be obtained during low load operation.
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: December 20, 2005
    Assignee: Babcock-Hitachi Kabushiki Kaisha
    Inventors: Yoshinori Ohtani, Hidehisa Yoshizako, Hiroaki Kanemoto, Yutaka Takeno, Yoshio Shimogori, Toshikazu Tsumura, Yoshitaka Takahashi
  • Publication number: 20050253859
    Abstract: The system LSI has a MCU, a memory access control means equipped with unified memory interfaces with which at least two lines of unified memories A and B can be connected. In the main unit of the data processing system, the purpose of each unified memory is set like “mainly for main storage” or “mainly for display” by software in accordance with the operating status of the data processing system so as to adjust the memory access performance. In addition, the system has a means for specifying the unified memory to access and area therein for every display plane to be controlled by the display control circuit.
    Type: Application
    Filed: May 12, 2005
    Publication date: November 17, 2005
    Applicant: Renesas Technology Corporation
    Inventors: Yoshitaka Takahashi, Yoshiyuki Matsumoto, Takanobu Naruse, Seiichi Saito, Yoshitaka Takahashi
  • Publication number: 20050250046
    Abstract: A hologram recording medium and apparatus for and method of recording data on the recording medium. The recording medium is a card shaped hologram recording medium having an auxiliary recording area at a periphery of a main or user data recording area. Address information is recorded along one or two sides of the main or user data recording area. The recording medium may also be divided into a plurality of user data areas each having associated address data on the one or two sides. A recording location is determined by reference to the address information.
    Type: Application
    Filed: April 26, 2005
    Publication date: November 10, 2005
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ikuo Aoki, Yoshitaka Takahashi
  • Publication number: 20050232115
    Abstract: A method of recording/reproducing information on/from a card-shaped hologram memory medium is provided in which an information recording/reproducing optical system can be conveniently controlled to increase a recording capacity of the card-shaped hologram memory medium. In the method, pieces of information are sequentially recorded in a data recording/reproducing area of the card shaped hologram memory medium along a predetermined route, while maintaining a predetermined distance between pieces of information.
    Type: Application
    Filed: March 17, 2005
    Publication date: October 20, 2005
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ikuo Aoki, Yoshitaka Takahashi
  • Publication number: 20050217376
    Abstract: A tuning-fork type vibration gyro enables to suppress pyroelectric noise caused by temperature change and to obtain sensor output having high signal-to-noise ratio. The tuning-fork type vibration gyro includes a tuning-fork type vibration body having two arms mutually disposed in parallel and a base for commonly supporting one end of the each arm, wherein a longitudinal direction of the two arms is defined as a z-axis and a perpendicular direction thereto is defined as an x-axis; driving electrodes respectively formed on the two arms for generating vibration of the two arms in a direction parallel to the x-axis; detecting electrodes respectively formed on the two arms for detecting electromotive force generated when the tuning-fork type vibration body is rotated around the z-axis; and dummy electrodes formed on the two arms in respective areas different from the driving electrodes and the detecting electrodes.
    Type: Application
    Filed: May 31, 2005
    Publication date: October 6, 2005
    Inventors: Kazuhiro Ohta, Masanori Yachi, Yoshitaka Takahashi, Kazutsugu Kikuchi, Keiji Saito
  • Patent number: 6949950
    Abstract: Consumption power control is provided for a system LSI made of a combination of a plurality of reusable logic circuit modules, i.e., Intellectual Property (IP) cores. Hardware resources such as interfaces and registers for the consumption power control of other IP cores are prepared and controlled by software for the consumption power control of a system LSI. The consumption power can be controlled at an IP core level. A method is provided which facilitates a system LSI designer to enter a consumption power control specification of a system LSI when the system LSI is configured.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: September 27, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Yoshitaka Takahashi, Masahiko Saito, Hidemitsu Naya, Mutsumi Kikuchi, Takashi Hotta
  • Patent number: 6948438
    Abstract: Disclosed is a sewing machine having a pattern selecting device including a pattern selecting dial and an electronic indicator for indicating a pattern selected by the pattern selecting device. More particularly, the pattern selecting device includes a mode switch 2 which is rotated by a pattern selecting dial 5 and has a plurality of switches Sw arranged in coaxial circles, a plurality of projections 2c arranged in coaxial circles, and an electronic indicator 10. A pattern is optionally selected by the projections 2c and switches Sw which are turned on in optional combination by rotation of the mode switch 2, and the selected pattern is indicated at the electronic indicator 10.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: September 27, 2005
    Assignee: Janome Sewing Machine Co., Ltd.
    Inventors: Yoshitaka Takahashi, Takehiro Kodama, Shunichi Okaya, Koshiro Omiya
  • Publication number: 20050200926
    Abstract: An optical recording medium for performing a hologram recording on a first layer and a ROM reproducing layer or a thermal recording layer and easily detecting the recording location of a hologram without reducing a recording capacity. The optical recording medium includes one surface having a hologram recording layer for recording information of an object beam as interference fringes by irradiating the object beam and a reference beam and at least one other surface having a ROM layer or a thermal layer on which pits are formed to store information to easily detect the recorded location of the hologram.
    Type: Application
    Filed: February 17, 2005
    Publication date: September 15, 2005
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Ikuo Aoki, Yoshitaka Takahashi
  • Patent number: 6931927
    Abstract: A tuning-fork vibration gyro including a ferroelectric tuning-fork vibration body generating a plurality of sensor signals and a sensor circuit to which the sensor signals generated by the tuning-fork vibration body are input. The sensor circuit includes a differential amplifier having two input terminals between which the sensor signals are input, and a capacitor being connected between the two input terminals of the differential amplifier.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: August 23, 2005
    Assignee: Fujitsu Media Devices Limited
    Inventors: Kazuhiro Ohta, Masanori Yachi, Yoshitaka Takahashi, Kazutsugu Kikuchi, Keiji Saito
  • Publication number: 20050179966
    Abstract: Provided is a hologram recording medium of precisely performing a location determination control of a beam spot by using a simple structure and performing a shift multi-recording while performing a two-dimensional location determination control in a tangential direction and a radial direction of the recording medium. The provided hologram recording medium has a recording/reproducing layer and a reflection layer between two substrates, and continuous or intermittent convex units or concave units for performing an optical location determination control are installed on a substrate adjacent to the reflection layer, the substrate having a flat surface facing the reflection layer. Accordingly, the provided hologram recording medium precisely performs a location determination control of a beam spot for recording data and performs a shift multi-recording while performing a two dimensional location determination control in a tangential direction and a radial direction of the recording medium.
    Type: Application
    Filed: February 17, 2005
    Publication date: August 18, 2005
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ikuo Aoki, Yoshitaka Takahashi
  • Publication number: 20050141064
    Abstract: A hologram recording medium, a recording apparatus and a recording method for the same, and a reproducing apparatus and a reproducing method for the same. The hologram recording medium is formed of a data recording region and a servo information recording region to allow a laser beam to be precisely irradiated for recording data on the hologram recording medium. Accordingly, data may be precisely recorded and reproduced from the hologram recording medium.
    Type: Application
    Filed: December 22, 2004
    Publication date: June 30, 2005
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ikuo Aoki, Yoshitaka Takahashi
  • Patent number: 6889619
    Abstract: A solid fuel burner and method uses a low oxygen concentration gas as a transporting gas for a low grade solid fuel such as brown coal or the like, provides for accelerating ignition of the fuel and for preventing slugging caused by combustion ash. Mixing of fuel and air inside a fuel nozzle 11 is accelerated by an additional air nozzle 12 and a separator 35 for separating a flow passage, arranged in the fuel nozzle 11, and an exit of the additional air nozzle 12 is set at a position that overlaps with the separator 35. Additional air is ejected in a direction nearly perpendicular to a flow direction of a fuel jet flowing through the fuel nozzle 11. The amount of air from the additional air nozzle 12 is varied corresponding to a combustion load, in order to assure stable burning of the fuel, and, to suppress radiant heat received by structures of the solid fuel burner and walls of the furnace.
    Type: Grant
    Filed: November 13, 2002
    Date of Patent: May 10, 2005
    Assignees: Hitachi, Ltd., Babcock- Hitachi K.K.
    Inventors: Hirofumi Okazaki, Masayuki Taniguchi, Toshikazu Tsumura, Yoshitaka Takahashi, Kouji Kuramashi