Patents by Inventor Yasuo Yamada

Yasuo Yamada 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).

  • Publication number: 20050231409
    Abstract: The present invention provides a driving circuit of a flat display device, and a flat display device, and is for example applicable to a display device using organic EL (Electro Luminescence) elements. The present invention makes it possible to correct light emission characteristics variously, effectively avoid significant degradation in image quality due to noise, and further simplify an adjustment operation by generating original reference voltages by selecting a plurality of candidate voltages formed by voltage divider circuits according to original reference voltage setting data, generating reference voltages for digital-to-analog conversion from the original reference voltages, generating the reference voltages at both ends by dividing a reference voltage generating voltage by the voltage divider circuit, and generating the other original reference voltages with voltage divider circuits connected in series with each other and the reference voltages at both ends used as a reference.
    Type: Application
    Filed: March 29, 2005
    Publication date: October 20, 2005
    Applicant: Sony Corporation
    Inventors: Masanori Yamaguchi, Yasuo Yamada
  • Patent number: 6914499
    Abstract: A dielectric filter includes a conductive cover formed by bending a metal plate and forming at least one inwardly projecting portion at a predetermined position along the bent portion. The inner surface of the at least one inwardly projecting portion abuts on an open circuit surface or edge of a dielectric block. Thus, the distance between the open circuit surface of the filter and the conductive cover is reliably maintained and unnecessary coupling between adjacent resonators is prevented.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: July 5, 2005
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Yukihiro Kitaichi, Takashi Maruyama, Yasuo Yamada
  • Patent number: 6885261
    Abstract: An outer conductor, an input terminal electrode, an output terminal electrode, a voltage controllable terminal electrode, and two separated electrodes are formed on the outer face of a dielectric block. Furthermore, on the upper face of the dielectric block, PIN diodes which are voltage controllable reactance elements, and inductors for voltage-controlling the PIN diodes, and a coupling adjustment capacitor are mounted. Frequency shifting capacitors are formed by generation of electrostatic capacitances between the separated electrodes and the inner conductors of the resonance holes, respectively.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: April 26, 2005
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masayuki Atokawa, Hirofumi Miyamoto, Hajime Suemasa, Kikuo Tsunoda, Yasuo Yamada
  • Publication number: 20050078490
    Abstract: A small-sized, highly efficient power conversion apparatus is provided which is capable of stabilizing its output and which can be easily applied to parallel driving. The power conversion apparatus turns on and off paired switching elements, lets an alternating current flow through a primary winding of a transformer, rectifies and smoothes an AC voltage thus induced across a secondary winding, thereby obtaining a DC output. On the basis of a rectangular wave signal having a duty ratio of 50% formed by a rectangular wave oscillator means, a dead time generator generates complementary on/off control signals having a dead time and supplies the on/off control signals to the paired switching elements.
    Type: Application
    Filed: August 25, 2004
    Publication date: April 14, 2005
    Inventors: Kenji Yokoyama, Yasuo Yamada, Hiroshi Ogawa
  • Publication number: 20040168763
    Abstract: The present invention provides a method of removing metal wires from a tire through induction heating, a method of collecting the metal wires and rubber part, and a method of reusing the metal wires and rubber part. The present invention relates to: a metal wire removal method for removing metal wires from a tire incorporated with metal wires using induction heating, wherein the metal wires in the tire are heated by induction heating, causing the rubber in the part contacting the metal wires to decompose and gasify to separate the metal wires and rubber part, whereupon the metal wires are removed; a method of collecting the metal wires and rubber part from the tire using the method described above; and a method of reusing the metal wires and rubber part collected using the method described above as metal and rubber resources. Thus the metal wires and rubber part can be separated from a used tire, collected at a high collection rate, and reused.
    Type: Application
    Filed: December 15, 2003
    Publication date: September 2, 2004
    Inventors: Kazuo Yasue, Yasuo Yamada
  • Publication number: 20040119563
    Abstract: A dielectric filter includes a conductive cover formed by bending a metal plate and forming at least one inwardly projecting portion at a predetermined position along the bent portion. The inner surface of the at least one inwardly projecting portion abuts on an open circuit surface or edge of a dielectric block. Thus, the distance between the open circuit surface of the filter and the conductive cover is reliably maintained and unnecessary coupling between adjacent resonators is prevented.
    Type: Application
    Filed: November 13, 2003
    Publication date: June 24, 2004
    Inventors: Yukihiro Kitaichi, Takashi Maruyama, Yasuo Yamada
  • Patent number: 6744318
    Abstract: A digital power amplifier has a reduced size, high output, high efficiency and low power consumption. Electrical isolation is provided between input and output sections by a photo-coupler on a transmission passage for turning into a digital signal.
    Type: Grant
    Filed: June 13, 2002
    Date of Patent: June 1, 2004
    Assignee: Flying Mole Corporation
    Inventors: Kenji Yokoyama, Yasuo Yamada
  • Patent number: 6694601
    Abstract: A method of adjusting characteristics of a dielectric filter including the following steps: forming a dielectric filter having a dielectric body, the dielectric body having an outer surface; forming an external conductor on the outer surface of the dielectric body; and forming at least one hole extending through the dielectric body, the at least one hole having a respective inner surface, and a respective internal conductor and a respective non-conductive portion at the inner surface; the outer surface of the dielectric body comprising first and second end surfaces and a side surface extending between the first and second end surfaces; the at least one hole extending through the dielectric body between the first and second end surfaces; the respective inner conductor being formed as a respective pair of internal conductors conductively connected to the external conductor at respective ends of the at least one hole, the respective non-conductive portion at the inner surface of the at least one hole being space
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: February 24, 2004
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Haruo Matsumoto, Yasuo Yamada, Yukihiro Kitaichi, Tadahiro Yorita, Hideyuki Kato, Tatsuya Tsujiguchi, Hisashi Mori, Hitoshi Tada
  • Publication number: 20030148075
    Abstract: A method for preparing a proof for plate printing, which comprises applying inkjet printing to an ink receiving layer of a recording medium having the ink receiving layer formed on the surface of a support made of plate printing paper for regular printing or made of paper having substantially the same brightness and glossiness as such plate printing paper, to obtain a printing proof.
    Type: Application
    Filed: February 21, 2003
    Publication date: August 7, 2003
    Applicant: Asahi Glass Company, Limited
    Inventors: Isao Gotou, Nobuyuki Yokota, Hiroyuki Fujii, Yasuo Yamada, Motoi Kamba
  • Patent number: 6590475
    Abstract: A filter with which it is possible to control the relationship between a pass band and an attenuation band. In this filter, for example, a single-stage trap filter is electrically connected to a three-stage band pass filter via a coupling capacitor. The trap filter has a serial resonance section composed of a resonator and a resonance capacitor. The serial resonance section is connected in parallel to a capacitive reactance element (capacitor), and a serial circuit composed of an inductive reactance element (inductor) and a PIN diode as a switching element. The capacitive reactance element and the inductive reactance element both serve to make an admittance of the trap circuit substantially zero.
    Type: Grant
    Filed: April 19, 2001
    Date of Patent: July 8, 2003
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Yasuo Yamada, Kikuo Tsunoda, Masayuki Atokawa, Hirofumi Miyamoto, Hajime Suemasa
  • Patent number: 6522220
    Abstract: A frequency variable filter in which both the frequency of an attenuation pole and the attenuation bandwidth can be varied. In the frequency variable filter, two serial resonance sections composed of resonators and resonance capacitors are electrically connected to each other via a capacitor. The respective resonator in each of the serial resonance sections is electrically connected in parallel with a corresponding serial circuit composed of a frequency shifting capacitor and a PIN diode. A coupling capacitor electrically connects the junctions defined respectively between the frequency shifting capacitor and the PIN diode in each of the serial circuits.
    Type: Grant
    Filed: April 19, 2001
    Date of Patent: February 18, 2003
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Yasuo Yamada, Kikuo Tsunoda, Masayuki Atokawa, Hirofumi Miyamoto, Hajime Suemasa
  • Publication number: 20020190792
    Abstract: A digital power amplifier has a reduced size, high output, high efficiency and low power consumption. Electrical isolation is provided between input and output sections by a photo-coupler on a transmission passage for turning into a digital signal.
    Type: Application
    Filed: June 13, 2002
    Publication date: December 19, 2002
    Applicant: FLYING MOLE CORPORATION
    Inventors: Kenji Yokoyama, Yasuo Yamada
  • Patent number: 6466109
    Abstract: A dielectric filter having a dielectric body made of dielectric material and having an outer surface including first and second end faces; an external conductor disposed on the outer surface of the dielectric body; at least one hole extending through the dielectric body between the two end faces, the at least one hole having a respective inner surface; the at least one hole having a pair of internal conductors respectively provided in the corresponding hole and conductively connected to the external conductor at respective ends of the corresponding hole, a respective non-conductive portion at the inner surface of the corresponding hole being spaced from both ends of the respective hole and thereby separating the corresponding pair of internal conductors and defining a capacitance between the corresponding pair of internal conductors; the first end face of said dielectric body being closer to the non-conductive portion at the inner surface of the corresponding hole than the second end face; the first end face
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: October 15, 2002
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Haruo Matsumoto, Yasuo Yamada, Yukihiro Kitaichi, Tadahiro Yorita, Hideyuki Kato, Tatsuya Tsujiguchi, Hisashi Mori, Hitoshi Tada
  • Patent number: 6441619
    Abstract: A remaining charge detection device for a power storage unit including a current detection unit which detects the current value of a charging current and a discharging current of a power storage unit; a voltage detection unit which detects the voltage value of a terminal voltage of the power storage unit; and a current accumulation remaining charge calculation means which accumulates the current value detected by the current detection unit to obtain an accumulated charging current and discharging current and calculates a remaining charge of the power storage unit. The remaining charge detection device further includes a no-load state detection unit which detects a no-load state of the power storage unit, and a remaining charge for calibration calculation unit which calculates a remaining charge for calibration for the remaining charge of the power storage unit.
    Type: Grant
    Filed: July 25, 2001
    Date of Patent: August 27, 2002
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Kazuhiro Araki, Naoki Maruno, Yasuo Yamada
  • Publication number: 20020105391
    Abstract: A filter with which it is possible to control the relationship between a pass band and an attenuation band. In this filter, for example, a single-stage trap filter is electrically connected to a three-stage band pass filter via a coupling capacitor. The trap filter has a serial resonance section composed of a resonator and a resonance capacitor. The serial resonance section is connected in parallel to a capacitive reactance element (capacitor), and a serial circuit composed of an inductive reactance element (inductor) and a PIN diode as a switching element. The capacitive reactance element and the inductive reactance element both serve to make an admittance of the trap circuit substantially zero.
    Type: Application
    Filed: April 19, 2001
    Publication date: August 8, 2002
    Inventors: Yasuo Yamada, Kikuo Tsunoda, Masayuki Atokawa, Hirofumi Miyamoto, Hajime Suemasa
  • Patent number: 6401328
    Abstract: Grooves are formed on the connection faces of the dielectric basic plates as a dielectric resonator, and also, an internal conductor is provided on the inside face, and coupling electrodes are formed on the other dielectric basic plate. These three dielectric basic plates are connected so that the coupling electrode effects capacity connection between internal conductors and the coupling electrode effects capacity connection between the internal conductors, whereby an earth electrode (external conductor) can be formed on almost full face on the reverse face side of the dielectric basic plate and the reduction of Qo of the resonator and the electromagnetic field leakage can be prevented.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: June 11, 2002
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Haruo Matsumoto, Tadahiro Yorita, Yasuo Yamada, Hideyuki Kato, Yukihiro Kitaichi, Hisashi Mori, Tatsuya Tsujiguchi
  • Patent number: 6400238
    Abstract: A dielectric filter, having a dielectric block with an outer surface including first and second end surfaces and a side surface extending between the first and second end surfaces; an external conductor disposed on the outer surface of the dielectric block, the external conductor substantially completely covering the outer surface; at least one hole extending through the dielectric body between the first and second end surfaces, the at least one hole having an inner surface; the at least one hole having a respective pair of internal conductors disposed on the corresponding inner surface thereof and conductively connected to the external conductor respectively at the first and second end surfaces, a respective non-conductive portion at the corresponding inner surface being spaced from both of the end surfaces and thereby separating the corresponding pair of internal conductors and defining a respective capacitance between the corresponding pair of internal conductors; a predetermined portion of the side surfac
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: June 4, 2002
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Haruo Matsumoto, Yasuo Yamada, Yukihiro Kitaichi, Tadahiro Yorita, Hideyuki Kato, Tatsuya Tsujiguchi, Hisashi Mori, Hitoshi Tada
  • Publication number: 20020030494
    Abstract: A remaining charge detection device for a power storage unit including a current detection unit which detects the current value of a charging current and a discharging current of a power storage unit; a voltage detection unit which detects the voltage value of a terminal voltage of the power storage unit; and a current accumulation remaining charge calculation means which accumulates the current value detected by the current detection unit to obtain an accumulated charging current and discharging current and calculates a remaining charge of the power storage unit. The remaining charge detection device further includes a no-load state detection unit which detects a no-load state of the power storage unit, and a remaining charge for calibration calculation unit which calculates a remaining charge for calibration for the remaining charge of the power storage unit.
    Type: Application
    Filed: July 25, 2001
    Publication date: March 14, 2002
    Applicant: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Kazuhiro Araki, Naoki Maruno, Yasuo Yamada
  • Publication number: 20020030556
    Abstract: A frequency variable filter in which both the frequency of an attenuation pole and the attenuation bandwidth can be varied. In the frequency variable filter, two serial resonance sections composed of resonators and resonance capacitors are electrically connected to each other via a capacitor. The respective resonator in each of the serial resonance sections is electrically connected in parallel with a corresponding serial circuit composed of a frequency shifting capacitor and a PIN diode. A coupling capacitor electrically connects the junctions defined respectively between the frequency shifting capacitor and the PIN diode in each of the serial circuits.
    Type: Application
    Filed: April 19, 2001
    Publication date: March 14, 2002
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Yasuo Yamada, Kikuo Tsunoda, Masayuki Atokawa, Hirofumi Miyamoto, Hajime Suemasa
  • Patent number: 6353374
    Abstract: A dielectric filter, having a dielectric block with an outer surface including first and second end surfaces and a side surface extending between the first and second end surfaces; an external conductor disposed on the outer surface of the dielectric block, the external conductor substantially completely covering the outer surface; at least one hole extending through the dielectric body between the first and second end surfaces, the at least one hole having an inner surface; the at least one hole having a respective pair of internal conductors disposed on its corresponding inner surface and conductively connected to the external conductor respectively at the first and second end surfaces, a respective non-conductive portion at the corresponding inner surface being spaced from both of the end surfaces and thereby separating the corresponding pair of internal conductors and defining a respective capacitance between the corresponding pair of internal conductors; a predetermined portion of one of the first and se
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: March 5, 2002
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Haruo Matsumoto, Yasuo Yamada, Yukihiro Kitaichi, Tadahiro Yorita, Hideyuki Kato, Tatsuya Tsujiguchi, Hisashi Mori, Hitoshi Tada