Patents by Inventor Hideki Kojima

Hideki Kojima 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: 7923971
    Abstract: The object is to provide a safe non-contact electric power transmission apparatus reducing unnecessarily consumed electric power, while intermittently-operated or otherwise restrained electric power transmission is not performed, and heat is not generated when a metal such as a foreign object is placed.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: April 12, 2011
    Assignee: Toko, Inc.
    Inventor: Hideki Kojima
  • Publication number: 20110054505
    Abstract: A fluid ejection device includes: a fluid chamber; a volume varying unit configured to vary the volume of the fluid chamber; a fluid supplying unit configured to supply fluid to the fluid chamber at a predetermined pressure; and an ejection command switching unit configured to switch a fluid ejection between a pulsed flow ejection which ejects the fluid in a pulsed manner by activating the volume varying unit and varying the volume of the fluid chamber and a continuous flow ejection which ejects the fluid with a fluid supply pressure from the fluid supplying unit higher than that in the case of the pulsed flow ejection in a state in which the volume varying unit is stopped.
    Type: Application
    Filed: August 25, 2010
    Publication date: March 3, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hideki KOJIMA, Shigeo SUGIMURA, Kunio TABATA
  • Publication number: 20110036859
    Abstract: A fluid ejection device includes a pulsating flow generation section adapted to eject a fluid in a pulsed manner; a fluid supply section adapted to supply the pulsating flow generation section with the fluid; a fluid supply tube having flexibility adapted to communicate the pulsating flow generation section and the fluid supply section with each other; and a drive control section adapted to perform drive control of the pulsating flow generation section and the fluid supply section, wherein the drive control section starts up the pulsating flow generation section, makes the fluid supply section supply the fluid at a first flow rate for a predetermined time period, and then makes the fluid supply section supply the fluid at a second flow rate lower than the first flow rate after the predetermined time period elapses.
    Type: Application
    Filed: August 11, 2010
    Publication date: February 17, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takahiro MATSUZAKI, Hideki KOJIMA, Shigeo SUGIMURA
  • Publication number: 20110037795
    Abstract: A fluid ejection method includes: supplying fluid at a predetermined fluid supply flow rate to a pressure chamber; generating a pulsed flow by varying the volume of the pressure chamber at a predetermined frequency; and ejecting the pulsed flow, wherein the fluid supply flow rate is proportional to the frequency.
    Type: Application
    Filed: August 16, 2010
    Publication date: February 17, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hideki KOJIMA, Shigeo SUGIMURA, Yasuhiro ONO
  • Publication number: 20110006127
    Abstract: Pulsating flow generating apparatus that changes the volume of a fluid chamber and injects fluid from a fluid injection opening in a pulsed manner, includes: an inlet flow channel for supplying fluid from a fluid supplying unit to the fluid chamber; a volume changing unit that changes the volume of the fluid chamber; an outlet flow channel that delivers the fluid from the fluid chamber to the fluid injection opening; a discharge flow channel that discharges the fluid from the fluid chamber; and an opening and closing valve that opens and closes the discharge flow channel, wherein the synthetic inertance of the discharge flow channel is set smaller than the synthetic inertance of the outlet flow channel, an operation of the volume changing unit is started while closing the opening and closing valve, and the operation of the volume changing unit is stopped while opening the opening and closing valve.
    Type: Application
    Filed: July 9, 2010
    Publication date: January 13, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yasuhiro ONO, Shigeo SUGIMURA, Hideki KOJIMA
  • Publication number: 20100295651
    Abstract: The present invention provides a power transmission transformer of which workability in implementing and reliability of connection are considered in a noncontact power transfer device using individual self-oscillation circuits. The power transmission transformer for a noncontact power transfer device including a transmitting coil L1 and a drive coil L2 for self-oscillation on a power transmission device side includes a bobbin in which the transmitting coil and the drive coil L2 are disposed, in which the transmitting coil and the drive coil L2 are configured by an air-core coil using self-bonding wire, and the bobbin 1 includes a winder spindle 1a, 1b on both surfaces opposed to each other across a collar 2 formed of a flat plate, and a mating portion 3 for mating with an external portion in an end portion of the winder spindle 1b, and the drive coil L2 is mounted on the winder spindle 1b and the transmitting coil L1 is mounted on the other, opposed winder spindle 1a across the collar.
    Type: Application
    Filed: August 2, 2010
    Publication date: November 25, 2010
    Inventor: Hideki Kojima
  • Publication number: 20100219696
    Abstract: Disclosed is a noncontact electric power transmission system having a power transmitter circuit section 10 and a power receiver circuit section 30 which are adapted to be coupled to transmit electric power from a transmitter coil Lp provided in the power transmitter circuit section 10 to a receiver coil Ls provided in the power receiver circuit section 30, in a noncontact manner by means of electromagnetic induction.
    Type: Application
    Filed: February 19, 2010
    Publication date: September 2, 2010
    Applicant: Toko, Inc.
    Inventor: Hideki Kojima
  • Publication number: 20100148315
    Abstract: A semiconductor wafer includes a plurality of predetermined separation lines extending from an upper surface to a bottom surface; and a semiconductor substrate including a plurality of chip regions segmented by the predetermined separation lines. Tensile stress is applied to regions of the semiconductor substrate provided with the predetermined separation lines.
    Type: Application
    Filed: February 25, 2010
    Publication date: June 17, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Takahiro KUMAKAWA, Hideki KOJIMA, Tomoaki FURUKAWA
  • Publication number: 20100148590
    Abstract: A non-contact electric power transmission circuit according to an embodiment of the invention includes an electric power transmission circuit and an electric power receiving circuit. The electric power transmission circuit includes a full bridge circuit and a resonant type full bridge circuit. A direct-current power supply is used as an input of the full bridge circuit, the full bridge circuit includes two sets of switching elements, two switching elements being connected in series in each set of the switching elements, a drive circuit alternately feeds a pulse signal to gates of the switching elements to perform switching of the direct-current input in the full bridge circuit, and a serial resonant circuit of a resonant capacitor and an electric power transmission coil is connected to an output of the full bridge circuit in the resonant type full bridge circuit. The electric power receiving circuit includes an electric power receiving coil and a rectifying and smoothing circuit.
    Type: Application
    Filed: December 9, 2009
    Publication date: June 17, 2010
    Inventor: Hideki KOJIMA
  • Publication number: 20100123430
    Abstract: There is provided a non-contact power transfer apparatus performing non-contact power transfer from a power transmission coil L1 to a power reception coil L2 using electromagnetic induction. The non-contact power transfer apparatus has: a power transmission unit 10 including the power transmission coil L1, a power transmission circuit 1, a current detection circuit 3, unit detection means 4 and a first microcomputer 2 with a control circuit for controlling each of the circuits; and a power reception unit 30 including the power reception coil L2, a rectification smoothing circuit 31, a series regulator 34, a charge battery unit 40 with a rechargeable battery, a switching element 33 for pulse-charging and a second microcomputer 32 with a control circuit for controlling the series regulator and the switching element.
    Type: Application
    Filed: November 2, 2009
    Publication date: May 20, 2010
    Inventors: Hideki Kojima, Hiroshi Furuya
  • Publication number: 20100124344
    Abstract: In order to miniaturize a piezoelectric body module, in which a rhombus-shaped electronic part 4 and a polygonal-shaped electronic part 5 are arranged on a rectangular substrate 2: the rhombus-shaped electronic part 4 is arranged on the substrate 2 such that a side 105 of the substrate 2 and a side 101 of the rhombus-shaped electronic part 4 are parallel to each other; and the polygonal-shaped electronic part 5 is arranged on the substrate 2 such that a side 104 of the rhombus-shaped electronic part 4 and a side 109 of the polygonal-shaped electronic part 5 are parallel to each other.
    Type: Application
    Filed: November 12, 2009
    Publication date: May 20, 2010
    Inventors: Atsuhito MIZUTANI, Hideki KOJIMA, Katuhiro MAKIHATA
  • Patent number: 7707028
    Abstract: A clustering system that clusters a language model group includes a union language model preparation unit that prepares a union language model for each language model so as to include a union of vocabularies in the language model group as entries, and a clustering unit that performs clustering with respect to the union language model group so as to classify the union language model group into a plurality of clusters. When the union language model preparation unit prepares a union language model for a certain language model, the union language model preparation unit records, regarding vocabularies included in the certain language model as a basis, occurrence frequencies of the corresponding entries in the certain language model, and records, regarding vocabularies not included in the certain language model, data showing that an occurrence frequency is 0. Thereby, a clustering system capable of clustering language models that includes voice uttered by or text written by a plurality of speakers can be provided.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: April 27, 2010
    Assignee: Fujitsu Limited
    Inventor: Hideki Kojima
  • Publication number: 20100082054
    Abstract: A fluid ejection device includes: a fluid chamber in which fluid flows; a volume varying unit having a pressure generating element that varies the volume of the fluid chamber on the basis of a driving signal; an inlet fluid channel and an outlet fluid channel intercommunicating with the fluid chamber; a fluid channel pipe having a connection fluid channel that intercommunicates with the outlet fluid channel at a first end thereof and intercommunicates with a fluid ejection port at a second end thereof; a fluid supply unit that supplies fluid to the inlet fluid channel; and a controller that applies a driving signal to the pressure generating element and controls variation of the volume of the fluid chamber by the volume varying unit, wherein the controller applies a driving signal to the pressure generating element so that a maximum ejection velocity of fluid in liquid is larger than a maximum ejection velocity of fluid in the air.
    Type: Application
    Filed: September 28, 2009
    Publication date: April 1, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takeshi SETO, Kazuo KAWASUMI, Yasuyoshi HAMA, Hideki KOJIMA, Yasuhiro ONO
  • Publication number: 20100082053
    Abstract: A fluid ejection device includes: a fluid chamber into which fluid flows; a volume varying unit that varies the volume of the fluid chamber; an inlet fluid channel and an outlet fluid channel intercommunicating with the fluid chamber; a fluid ejection port that ejects fluid flowing out from the outlet fluid channel; a fluid supply unit that supplies fluid into the inlet fluid channel; a controller that controls the variation of the volume of the fluid chamber by the volume varying unit; and a color detector that detects color of a fluid ejection target area facing the fluid ejection port, wherein the controller controls the variation of the volume of the fluid chamber by the volume varying unit in accordance with the color detected by the color detecting unit.
    Type: Application
    Filed: September 14, 2009
    Publication date: April 1, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yasuyoshi HAMA, Kinya MATSUZAWA, Takeshi SETO, Hideki KOJIMA, Yasuhiro ONO
  • Publication number: 20100078495
    Abstract: A fluid ejection device includes: a fluid chamber whose capacity is variable; an inlet flow path and an outlet flow path communicating with the fluid chamber; a capacity changing unit which changes the capacity of the fluid chamber; a fluid supplying unit which supplies fluid to the inlet flow path; a fluid ejection opening disposed at an end of the outlet flow path opposite to an end communicating with the fluid chamber; a vibrating unit which vibrates a component in the vicinity of the fluid ejection opening; a vibration detecting unit which detects the level of vibration of the component in the vicinity of the fluid ejection opening; and an operation control unit which controls operation of the capacity changing unit based on the level of the vibration detected by the vibration detecting unit.
    Type: Application
    Filed: September 28, 2009
    Publication date: April 1, 2010
    Applicant: Seiko Epson Corporation
    Inventors: Takeshi SETO, Kazuo KAWASUMI, Yasuyoshi HAMA, Hideki KOJIMA, Yasuhiro ONO
  • Publication number: 20100079522
    Abstract: A fluid ejection device includes: a fluid chamber whose capacity is variable; an inlet flow path and an outlet flow path communicating with the fluid chamber; a capacity changing unit which changes the capacity of the fluid chamber; a fluid supplying unit which supplies fluid to the inlet flow path; a fluid ejection opening disposed at an end of the outlet flow path opposite to an end communicating with the fluid chamber; a first electrode of a predetermined polarity having a first contact portion disposed at the fluid ejection opening or a component in the vicinity of the fluid ejection opening; a second electrode having a polarity different from the predetermined polarity and having a second conductive contact portion; a conduction judging unit which judges whether the first electrode and the second electrode are conducted; and an operation control unit which controls operation of the capacity changing unit based on judgment result of the conduction judging unit.
    Type: Application
    Filed: September 14, 2009
    Publication date: April 1, 2010
    Applicant: Seiko Epson Corporation
    Inventors: Takeshi SETO, Kazuo KAWASUMI, Yasuyoshi HAMA, Hideki KOJIMA, Yasuhiro ONO
  • Publication number: 20100054960
    Abstract: A fluid ejecting apparatus having a fluid chamber, an inlet flow channel, and a nozzle configured to eject fluid supplied from the inlet flow channel to the fluid chamber from the nozzle in a pulsed manner by changing the volume of the fluid chamber includes: a diaphragm; a wall surface provided so as to oppose the diaphragm; a spacer being provided between the diaphragm and the wall surface and having a cylindrical through hole; a piezoelectric element configured to displace the diaphragm; and a connecting flow channel tube communicated with the fluid chamber, wherein the nozzle is provided at an end of the connecting flow channel tube opposite to the fluid chamber, the fluid chamber is defined by the diaphragm, the wall surface, and an inner surface of the through hole of the spacer, and the inlet flow channel is defined by a groove provided on the wall surface and the spacer and is communicated with the fluid chamber.
    Type: Application
    Filed: August 26, 2009
    Publication date: March 4, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takeshi SETO, Kazuo KAWASUMI, Hideki KOJIMA, Yasuhiro ONO
  • Patent number: 7518802
    Abstract: An illumination device to increase or decrease a quantity of light, while maintaining a uniform illumination intensity distribution, an image display device that displays high-quality images with a wide dynamic range, and a projector are provided. The illumination device includes a light source including a lamp and a concave mirror and emitting an illumination light, a variable diaphragm, for example in the form of a shutter having a linear edge and controlling the quantity of the illumination light, and a rotary prism which is an illumination light scanning device to scan the illumination light that passed through the variable diaphragm over an irradiated surface. The axis of the direction in which the illumination light is scanned over the irradiated surface almost coincides with the axis of the direction in which the variable diaphragm controls the illumination light. Here, the control modes in the +x axis direction, ?x axis direction and ±x axis direction are used to match the axis.
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: April 14, 2009
    Assignee: Seiko Epson Corporation
    Inventor: Hideki Kojima
  • Publication number: 20090015210
    Abstract: The object is to provide a safe non-contact electric power transmission apparatus reducing unnecessarily consumed electric power, while intermittently-operated or otherwise restrained electric power transmission is not performed, and heat is not generated when a metal such as a foreign object is placed.
    Type: Application
    Filed: July 11, 2008
    Publication date: January 15, 2009
    Applicant: TOKO, INC.
    Inventor: Hideki Kojima
  • Publication number: 20080252409
    Abstract: The present invention provides a power transmission transformer of which workability in implementing and reliability of connection are considered in a noncontact power transfer device using individual self-oscillation circuits. The power transmission transformer for a noncontact power transfer device including a transmitting coil L1 and a drive coil L2 for self-oscillation on a power transmission device side includes a bobbin in which the transmitting coil and the drive coil L2 are disposed, in which the transmitting coil and the drive coil L2 are configured by an air-core coil using self-bonding wire, and the bobbin 1 includes a winder spindle 1a, 1b on both surfaces opposed to each other across a collar 2 formed of a flat plate, and a mating portion 3 for mating with an external portion in an end portion of the winder spindle 1b, and the drive coil L2 is mounted on the winder spindle 1b and the transmitting coil L1 is mounted on the other, opposed winder spindle 1a across the collar.
    Type: Application
    Filed: April 10, 2008
    Publication date: October 16, 2008
    Applicant: TOKO, INC.
    Inventor: Hideki Kojima