Patents by Inventor Naoki Yoshida

Naoki Yoshida 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: 7786790
    Abstract: A temperature compensation circuit performing temperature compensation of an analog reference voltage, includes: a first reference voltage generating circuit generating a first voltage of which a voltage level varies depending on a temperature; a second reference voltage generating circuit generating a second voltage of which a voltage level is independent of a temperature and having a circuit configuration that is same as a circuit configuration of the first reference voltage generating circuit; an inverting amplifier having a gain of 1, which inverts and amplifies a voltage difference between the first voltage and the second voltage so as to generate a third voltage; and a differential amplifier amplifying a voltage difference between the third voltage and the first voltage so as to generate a fourth voltage In the temperature compensation circuit, the differential amplifier includes: a first operational amplifier; a first resistor coupled between a first node and a second node that is an inverting input te
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: August 31, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Naoki Yoshida, Masahiro Kanai, Asami Kobayashi
  • Publication number: 20100206074
    Abstract: There is provided an oscillation drive device that forms an oscillation loop with a vibrator for exciting a driving vibration on the vibrator.
    Type: Application
    Filed: February 12, 2010
    Publication date: August 19, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Naoki YOSHIDA, Masahiro KANAI
  • Patent number: 7777771
    Abstract: An information recording and erasing apparatus configured to record information on and erase other information from a thermo-sensitive recording medium which medium is capable of heat-reversible coloring and discoloring, the information recording and erasing apparatus includes an erasing unit configured to move the thermo-sensitive recording medium from one side to another side, heat the thermo-sensitive recording medium, and erase the other information recorded in the thermo-sensitive recording medium; and a recording unit provided in a direction perpendicular to a moving direction of the thermo-sensitive recording medium with the erasing unit, the recording unit being configured to record the information in the thermo-sensitive recording medium where the other information is erased by the erasing unit.
    Type: Grant
    Filed: August 2, 2007
    Date of Patent: August 17, 2010
    Assignees: Ricoh Company, Ltd., Wedg Co., Ltd.
    Inventors: Hideo Sakurai, Tadafumi Tatewaki, Yukio Ide, Naoki Yoshida
  • Patent number: 7755879
    Abstract: To provide a non-aqueous electrolytic solution for an electric double layer capacitor excellent in low-temperature characteristics, which solution has from 15 to 40 mass % of an electrolyte, more than 30 mass % and at most 45 mass % of a fluorobenzene represented by the following formula 1, and from 15 to 55 mass % of a cyclic carbonate represented by the formula 2: in the formula 1, n is an integer of from 1 to 6, and in the formula 2, each of R1 and R2 which are independent of each other, is a hydrogen atom or a methyl group.
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: July 13, 2010
    Assignee: Asahi Glass Company, Limited
    Inventors: Naoki Yoshida, Katsuji Ikeda
  • Publication number: 20100145149
    Abstract: A living body observation system of the present invention includes an in vivo observation apparatus including: an in vivo information acquisition section; a power supply section; a magnetic field detection section for detecting a magnetic field from outside; and a power supply control section for controlling a supply state of driving power supplied to the in vivo information acquisition section, based on an electric signal, and a magnetic field generation section which generates the magnetic field, the magnetic field generation section including: a transmission antenna which includes a transmission coil which generates an alternating magnetic field for controlling activation and deactivation of the in vivo observation apparatus and a ferromagnetic material which is arranged in an outer periphery of the transmission coil and decreases a leakage of the alternating magnetic field in surroundings, and transmits the alternating magnetic field; a driver for driving the transmission antenna; and a power supply for s
    Type: Application
    Filed: November 24, 2009
    Publication date: June 10, 2010
    Applicant: OLYMPUS CORPORATION
    Inventors: Naoki YOSHIDA, Fukashi YOSHIZAWA
  • Publication number: 20100137050
    Abstract: A video game, in which a player character operated by a player fights against an enemy character and one character wins by lowering a life parameter for the other character by means of an attack to a battle impossible value at which the other character cannot fight, is controlled. First and second courage points are respectively applied to the player character and the enemy character in accordance with battle content. When a predetermined operation is received from the player, it is determined whether or not each of accumulated values of the first and second courage points is a predetermined value or more. Special fighting between the player character and the enemy character is controlled in the case where it is determined that both the accumulated values are the predetermined value or more. The special fighting is different from a battle for lowering the life parameter.
    Type: Application
    Filed: October 27, 2009
    Publication date: June 3, 2010
    Applicant: KABUSHIKI KAISHA SQUARE ENIX (also trading as SQUARE ENIX CO., LTD)
    Inventor: Naoki YOSHIDA
  • Patent number: 7708051
    Abstract: A physical quantity detector, such as a pressure sensor and a load sensor, includes a cylindrical part of which one end is closed with a strain generating part and a sensor part formed on the strain generating part. The cylindrical part is produced by melting an alloying material having a composition capable of yielding an amorphous alloy, injecting the resultant molten alloy into a metal mold, and cooling the molten alloy in the metal mold to confer amorphousness on the alloy. The metal mold includes a split mold having at least two split parts for forming a cavity and an insert pin to be inserted into the cavity so as to define the inner configuration of the cylindrical part, or further an insert core to be inserted into the mold so as to form the surface of the cavity corresponding to the surface of the strain generating part.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: May 4, 2010
    Assignees: YKK Corporation, Nagano Keiki Co., Ltd.
    Inventors: Tetsuya Katsumi, Hitoshi Ofune, Tadashi Yamaguchi, Hiroshi Nagasaka, Naoki Yoshida
  • Patent number: 7701609
    Abstract: A sheet is wound up on a frictional carrier drum having a circumferential length longer than a sheet length so that the length of the wound-up sheet is a quarter or more of the circumferential length, and contact elements for pressing the sheet against the frictional carrier drum are provided at four or more positions around the frictional carrier drum so as not to generate a slip of the sheet, whereby it is possible to prevent a slip between the sheet and the frictional carrier drum, and it is also possible to prevent the superposition deviation of colors in a transfer process repeated several times.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: April 20, 2010
    Assignee: WEDG Co., Ltd.
    Inventor: Naoki Yoshida
  • Patent number: 7692506
    Abstract: An oscillation driver device includes a gain control amplifier, an automatic gain control circuit, and a mode setting circuit. When the mode setting circuit has switched a mode from a normal operation mode to a low power consumption mode, the automatic gain control circuit is disabled, and the gain in an oscillation loop that drives the vibrator changes from a state in which the gain in the oscillation loop is controlled to be unity by the automatic gain control circuit to a state in which the gain in the oscillation loop is set to be larger than unity. When the mode setting circuit has switched the mode from the low power consumption mode to the normal operation mode, the automatic gain control circuit resumes operation, and the gain in the oscillation loop changes from the state in which the gain in the oscillation loop is set to be larger than unity to the state in which the gain in the oscillation loop is controlled to be unity by the automatic gain control circuit.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: April 6, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Masahiro Kanai, Eitaro Otsuka, Naoki Yoshida
  • Publication number: 20100071466
    Abstract: A synchronous detection circuit includes: an offset compensation circuit which generates an offset compensation voltage to compensate an offset voltage superposed on a direct current voltage signal; and a temperature compensation circuit which generates a temperature compensation voltage to compensate variation of a direct current reference voltage that depends on a temperature in a signal path of a sensing circuit. In the circuit, the synchronous detection circuit synchronously detects an alternating current signal, the offset compensation voltage and the temperature compensation voltage are respectively superposed on the alternating current signal which is input into the synchronous detection circuit, and the synchronous detection circuit synchronously detects the alternating current signal on which the offset compensation voltage and the temperature compensation voltage have been superposed.
    Type: Application
    Filed: March 19, 2009
    Publication date: March 25, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Masahiro KANAI, Asami KOBAYASHI, Naoki YOSHIDA
  • Patent number: 7671879
    Abstract: An information recording apparatus enables information to be recorded in a thermosensitive recording medium accurately while preventing the development of skew. When a rewritable medium is conveyed to a recording unit, the rotation of the rewritable medium and its position with reference to an axis are adjusted. Specifically, the rewritable medium is held between guide pins to such an extent as not to warp the rewritable medium while the medium is sandwiched between a clamper and a conveyance tray, until the rewritable medium reaches the recording unit. Thus, the rewritable medium is delivered to the recording unit with an adjusted posture, allowing the recording unit to record information in the rewritable medium without the development of skew in the rewritable medium.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: March 2, 2010
    Assignees: Ricoh Company, Ltd., Shinko Electric Co., Ltd., Wedg Co., Ltd.
    Inventors: Tadafumi Tatewaki, Hideo Sakurai, Kazuhiro Tsuji, Naoki Yoshida
  • Patent number: 7659916
    Abstract: A heating unit is disclosed that heats a heat-sensitive medium. The heating unit includes a heat generating body that converts electric energy into heat energy; a fixed member to which the heat generating body is fixed; and a holding member that directly holds the fixed member while contacting at least a part of the fixed member.
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: February 9, 2010
    Assignees: Ricoh Company, Ltd., Wedg Co., Ltd.
    Inventors: Hideo Sakurai, Tadafumi Tatewaki, Satoshi Arai, Naoki Yoshida
  • Patent number: 7639269
    Abstract: A printer transfers to one image formation area a plurality of single colors of ink repeatedly arranged in a longitudinal direction of the ink sheet, to thus produce in an image formation area of an intermediate transfer sheet a transfer image formed as a result of lamination of single color images, and also transfers the transfer image of the intermediate transfer sheet to a subject to be printed, thereby producing a desired image on the subject. During the course of a first single color of ink C being transferred from the ink sheet to an image formation area of an intermediate transfer sheet, to thus produce a single color image in the first color on the intermediate transfer sheet, a position mark is transferred by use of a black ink area provided at a widthwise edge of an area of the first single color of ink of the ink sheet and outside the image formation area of the intermediate transfer sheet.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: December 29, 2009
    Assignee: TEAC Corporation
    Inventors: Junichi Mizukami, Atsushi Hanada, Naoki Yoshida, Hiroyuki Kasahara
  • Publication number: 20090237151
    Abstract: A temperature compensation circuit performing temperature compensation of an analog reference voltage, includes: a first reference voltage generating circuit generating a first voltage of which a voltage level varies depending on a temperature; a second reference voltage generating circuit generating a second voltage of which a voltage level is independent of a temperature and having a circuit configuration that is same as a circuit configuration of the first reference voltage generating circuit; an inverting amplifier having a gain of 1, which inverts and amplifies a voltage difference between the first voltage and the second voltage so as to generate a third voltage; and a differential amplifier amplifying a voltage difference between the third voltage and the first voltage so as to generate a fourth voltage In the temperature compensation circuit, the differential amplifier includes: a first operational amplifier; a first resistor coupled between a first node and a second node that is an inverting input te
    Type: Application
    Filed: March 19, 2009
    Publication date: September 24, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Naoki YOSHIDA, Masahiro KANAI, Asami KOBAYASHI
  • Patent number: 7571939
    Abstract: A pipe joint includes a socket, a plug, a retaining unit for preventing the plug from being drawn out from the socket, a seal ring arranged at an inner periphery of the socket and a hold ring arranged at the inner periphery of the socket for preventing the seal ring from being moved. A projected portion is formed at a position of the inner periphery of the socket for attaching the hold ring, and the hold ring includes a notched portion or a recess portion for engaging with the projected portion, and a projected portion projected in a direction of an inserting port of the plug, and the plug includes a ring-like projected portion for engaging with the retaining unit, and a recess portion or a flat portion provided at the ring-like projected portion to engage with the projected portion of the hold ring.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: August 11, 2009
    Assignee: Piolax, Inc.
    Inventors: Naoki Yoshida, Yoshikazu Kitamura
  • Publication number: 20090154063
    Abstract: To provide a non-aqueous electrolytic solution for an electric double layer capacitor excellent in low-temperature characteristics. A non-aqueous electrolytic solution for an electric double layer capacitor comprising from 15 to 40 mass % of an electrolyte, more than 30 mass % and at most 45 mass % of a fluorobenzene represented by the following formula 1, and from 15 to 55 mass % of a cyclic carbonate represented by the formula 2: in the formula 1, n is an integer of from 1 to 6, and in the formula 2, each of R1 and R2 which are independent of each other, is a hydrogen atom or a methyl group.
    Type: Application
    Filed: February 11, 2009
    Publication date: June 18, 2009
    Applicant: Asahi Glass Company, Limited
    Inventors: Naoki YOSHIDA, Katsuji Ikeda
  • Publication number: 20090133496
    Abstract: An oscillation driver circuit includes a current-voltage converter which converts a current value of an oscillation signal in an oscillation loop into a voltage value, and a comparator which outputs a signal corresponding to the result of comparison between the output signal from the current-voltage converter and a given reference signal. The comparator has an output current limiting function. The oscillation driver circuit causes the vibrator to produce driving vibrations based on the output from the comparator.
    Type: Application
    Filed: September 7, 2007
    Publication date: May 28, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Masahiro Kanai, Eitaro Otsuka, Naoki Yoshida, Akihiro Fukuzawa
  • Patent number: 7516989
    Abstract: A pipe connector for connecting a first pipe and a second pipe includes a socket attached to an end of the first pipe and a plug attached to an end of the second pipe, wherein the plug is inserted into the socket. An inner periphery of the socket is provided with a seal ring for sealing an interval between the inner periphery of the socket and an outer periphery of the plug in an airtight manner and a hold ring for restricting movement of the seal ring in an axial direction. The hold ring includes a groove in a ring-like shape for constituting a burr storing space at an outer periphery thereof and is welded to the inner periphery of the socket by ultrasonic welding.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: April 14, 2009
    Assignee: Piolax, Inc.
    Inventor: Naoki Yoshida
  • Patent number: D618284
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: June 22, 2010
    Assignee: Kabushiki Kaisha Square Enix
    Inventors: Ryutaro Ichimura, Kaito Yamaguchi, Naoki Yoshida, Takeshi Fujikawa, Toshinao Yoshihara, Seiji Kato, Shigeyasu Tsuna
  • Patent number: D618285
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: June 22, 2010
    Assignee: Kabushiki Kaisha Square Enix
    Inventors: Ryutaro Ichimura, Kaito Yamaguchi, Naoki Yoshida, Takeshi Fujikawa, Shigeyasu Tsuna