Patents by Inventor Tomohiro Yamada

Tomohiro 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: 20040078385
    Abstract: A content delivery system includes a server (300), and each server (300) has advertisement information advertising itself as to what kind of services are offered. The advertisement information is arbitrarily downloadable by a client (100). Furthermore, the downloaded advertisement information is stored in a memory within a content reproducing apparatus (400). When the content reproducing apparatus (400) is connected, the client (100) reads out the advertisement information stored in the memory within the content reproducing apparatus (400). Therefore, this eliminates a need to access each server so as to browse a homepage, and enables to easily know what kind of services each server offers.
    Type: Application
    Filed: August 22, 2003
    Publication date: April 22, 2004
    Inventor: Tomohiro Yamada
  • Publication number: 20040049392
    Abstract: A content outputting apparatus includes an MCU, and when an instruction of outputting music data is input, the MCU determines whether or not a license of the music data is obtained. In a case of absence of the license, the music data is not output from a digital terminal. On the other hand, in a case of presence of the license, the music data is output from the digital terminal to an external device. It is noted that even in a case of presence of the license, when the license completely permitting to output the music data is not obtained, noise data is added to an entire or a partial portion of the music data output from the digital terminal. That is, a quality of the music data is lowered.
    Type: Application
    Filed: August 29, 2003
    Publication date: March 11, 2004
    Inventor: Tomohiro Yamada
  • Publication number: 20040026240
    Abstract: A sputtering apparatus and a sputter film deposition method, which includes a conventional magnetron and an AC magnetron for deposition of a low refractive index film, and a conventional magnetron and an AC magnetron for deposition of a high refractive index film, performs film deposition by each of the AC magnetrons until having achieved 90% of a designed film thickness, and then performs the film deposition only by each of the conventional magnetrons, and which can control the film thickness with high precision and have excellent productivity.
    Type: Application
    Filed: August 7, 2003
    Publication date: February 12, 2004
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Eiji Shidoji, Eiichi Ando, Tomohiro Yamada, Takahiro Mashimo
  • Publication number: 20040011869
    Abstract: A content reproduction apparatus includes a CPU 18, and the CPU measures a power-on time period Ton, which is from a point of time that a main power switch 42 is turned-on until a point of time that it is turned-off, and a power-off time period Toff, which is from a point of time that the main power switch 42 is turned-off until a point of time that it is turned-on once again. Furthermore, a total sum T of the measured time periods Ton and Toff is evaluated, and the audio data is rendered invalid (not reproducible) when the evaluated total sum T exceeds a term of validity Ta of the audio data recorded in a memory card 12.
    Type: Application
    Filed: February 6, 2003
    Publication date: January 22, 2004
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventor: Tomohiro Yamada
  • Publication number: 20030230709
    Abstract: A probe which generates near-field light from an aperture at the tip is provided. The tip is covered with a lightproof member, at least the interior of the lightproof member is in the shape of a cone having a plane-shaped top, and the aperture is provided in the top plane.
    Type: Application
    Filed: May 19, 2003
    Publication date: December 18, 2003
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tomohiro Yamada, Natsuhiko Mizutani
  • Publication number: 20030132392
    Abstract: A sensor device is formed from a metal film having a plurality of openings, a sensor material positioned within each of the openings, a light source that emits light having a first wavelength, and a light detector that detects light emitted from the light source and transmitted through or reflected from the openings. The plurality of openings are arranged periodically in a first direction in the metal film, and both a size of each of the plurality of openings and an interval thereof in the first direction are equal to or less than the wavelength of the light.
    Type: Application
    Filed: January 10, 2003
    Publication date: July 17, 2003
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Ryo Kuroda, Natsuhiko Mizutani, Takako Yamaguchi, Yasuhisa Inao, Tomohiro Yamada
  • Patent number: 6590790
    Abstract: A switching power supply device in which a transformer, a first switch circuit, and an input power source are connected in series. A series circuit formed of a second switch circuit and a capacitor is connected to one end of the first switch circuit. The transformer has a driving winding which is wound in the same direction as that of the primary winding of the transformer. A capacitive impedance element including a series circuit formed of a capacitor and an inductive ferrite bead, is connected between the termination of the driving winding and the input power source. The switching power supply device uses a less capacitive impedance and thus provides higher radiation noise reduction performance, thereby preventing switching devices from being damaged due to high voltage increase rate of the switching devices.
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: July 8, 2003
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Tatsuya Hosotani, Tomohiro Yamada, Kentaro Takahashi
  • Publication number: 20030071561
    Abstract: A directly-heated oxide cathode and a fluorescent display tube using the same, which works with low power consumption, is provided. In a filament cathode, an alkaline earth oxide having an average grain size of 0.1 &mgr;m to 2.0 &mgr;m is coated in a thickness of 0.5 &mgr;m to 4.0 &mgr;m on the surface of a core metal wire. This structure reduces the power consumption of the filament cathode. The filament cathodes mounted in a fluorescent display tube can reduce the power consumption of the fluorescent display tube.
    Type: Application
    Filed: October 14, 2002
    Publication date: April 17, 2003
    Inventors: Masahiro Kato, Tomohiro Yamada
  • Publication number: 20030061501
    Abstract: A signal record reproduction device 1 of the invention comprises a microcomputer 12 and a memory 17. A series of data blocks are divided into a plurality of items of element data. The element data is interleaved and stored to the memory 17. A memory incorporated in the microcomputer 12 stores a table and a function expression for deriving address data representing an address to store each element data in memory regions positioned sufficiently apart one another in address space.
    Type: Application
    Filed: September 26, 2002
    Publication date: March 27, 2003
    Inventor: Tomohiro Yamada
  • Patent number: 6525946
    Abstract: A switching power supply unit and an electronic apparatus including the same, has a photocoupler that is used for providing feedback from the secondary side to the primary side. The photocoupler is shielded by a heat sink so that incorrect operation of the photocoupler caused by electromagnetic waves emanating from cellular phones or other electronic apparatuses is prevented, thereby preventing incorrect operation of the switching power supply unit and the electronic apparatus.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: February 25, 2003
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Ryota Tani, Tomohiro Yamada, Kentaro Takahashi
  • Publication number: 20020154859
    Abstract: A near field light probe is capable of emanating a near field light having a sufficient intensity while allowing reduction of aperture size to improve resolution. The near field light probe can be incorporated in a near-field optical microscope, a near field light lithography apparatus, and a near field light storage apparatus. A near field light probe has a configuration in which a light-blocking film is formed with an aperture having slits surrounding the major opening. Light emitted from a light source is coupled into the probe from one side of the light-blocking film, the light being polarized in a predetermined direction with respect to the slits so that a near field light emanates from the major opening.
    Type: Application
    Filed: March 28, 2002
    Publication date: October 24, 2002
    Applicant: Canon Kabushiki Kaisha
    Inventors: Ryo Kuroda, Takako Yamaguchi, Yasuhisa Inao, Tomohiro Yamada
  • Patent number: 6433443
    Abstract: A switching power supply having two or more DC outputs includes a DC power supply, a transformer having a primary winding, at least two secondary windings, and a feedback winding, a main switching element having an off-state period and an on-state period, connected in series to the primary winding and to be turned on by a voltage generated in the feedback winding, the main switching element having a control terminal and a threshold voltage to turn the main switching element on; and a rectifying circuit connected to each secondary winding, a starting circuit which initially turns on the main switching element at startup of the power supply and a switching circuit provided between the two DC outputs, and wherein, when the switching circuit is turned on, a voltage generated in the feedback winding is lowered during the off-state period of the main switching element and a voltage to be applied to the control terminal of the main switching element is controlled so as to be less than the threshold voltage, and the
    Type: Grant
    Filed: January 9, 2001
    Date of Patent: August 13, 2002
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Akio Nishida, Ryota Tani, Koji Nakahira, Tomohiro Yamada
  • Publication number: 20020093837
    Abstract: A switching power supply unit and an electronic apparatus including the same, has a photocoupler that is used for providing feedback from the secondary side to the primary side. The photocoupler is shielded by a heat sink so that incorrect operation of the photocoupler caused by electromagnetic waves emanating from cellular phones or other electronic apparatuses is prevented, thereby preventing incorrect operation of the switching power supply unit and the electronic apparatus.
    Type: Application
    Filed: December 7, 2001
    Publication date: July 18, 2002
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Ryota Tani, Tomohiro Yamada, Kentaro Takahashi
  • Publication number: 20020067627
    Abstract: A switching power supply device in which a transformer, a first switch circuit, and an input power source are connected in series. A series circuit formed of a second switch circuit and a capacitor is connected to one end of the first switch circuit. The transformer has a driving winding which is wound in the same direction as that of the primary winding of the transformer. A capacitive impedance element including a series circuit formed of a capacitor and an inductive ferrite bead, is connected between the termination of the driving winding and the input power source. The switching power supply device uses a less capacitive impedance and thus provides higher radiation noise reduction performance, thereby preventing switching devices from being damaged due to high voltage increase rate of the switching devices.
    Type: Application
    Filed: October 9, 2001
    Publication date: June 6, 2002
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Tatsuya Hosotani, Tomohiro Yamada, Kentaro Takahashi
  • Patent number: 6344288
    Abstract: A light absorptive antireflector comprising a substrate, and a first layer of a light absorptive film, a second layer made of a material which has slight absorption within a visible light region and a third layer made of a material which has a refractive index smaller than 1.55, sequentially formed on the substrate, which has an adequate low reflection performance within a wide range of a wavelength region and which has an electromagnetic shielding ability and a low luminous transmittance suitable for improving the contrast of a display, has freeness in transmittance and reflection color and is excellent also in the productivity, and a method for its production.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: February 5, 2002
    Assignee: Asahi Glass Company, Limited
    Inventors: Takuji Oyama, Tomohiro Yamada
  • Publication number: 20010007529
    Abstract: A switching power supply having two or more DC outputs comprising: a DC power supply, a transformer having a primary winding, at least two secondary windings, and a feedback winding, a main switching element having an off-state period and an on-state period, connected in series to the primary winding and to be turned on by a voltage generated in the feedback winding, the main switching element having a control terminal and a threshold voltage to turn the main switching element on; and a rectifying circuit connected to each secondary winding, a starting circuit which initially turns on the main switching element at startup of the power supply and a switching circuit provided between the two DC outputs, and wherein, when the switching circuit is turned on, a voltage generated in the feedback winding is lowered during the off-state period of the main switching element and a voltage to be applied to the control terminal of the main switching element is controlled so as to be less than the threshold voltage, and t
    Type: Application
    Filed: January 9, 2001
    Publication date: July 12, 2001
    Inventors: Akio Nishida, Ryota Tani, Koji Nakahira, Tomohiro Yamada
  • Patent number: 6256179
    Abstract: A switching power supply apparatus comprises a transformer having a primary winding, a secondary winding, and a feedback winding; a switching element connected in series with the primary winding, a controlling circuit provided between a control terminal of the switching element and the feedback winding; a rectifying circuit connected to the secondary winding; and a protecting circuit adapted to stop the switching operation of the switching element in correspondence to an abnormality in voltage produced in the feedback winding and having the opposite polarity to the voltage produced in the feedback winding.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: July 3, 2001
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Tomohiro Yamada, Akihiko Takida
  • Patent number: 6195126
    Abstract: A video signal processing apparatus and method for use with an electronic still camera or the like. An image memory is utilized which has a luminance data region for storing luminance data, a chromatic data region for storing chromatic data, a character data region for storing character data, and pattern data region(s) for storing pattern data. Character data and pattern data stored in the character data region and the pattern data regions may be combined with and/or incorporated into luminance data and chromatic data stored in the luminance data region and the chromatic data region. As a result, a dedicated ROM is not needed and information pertaining to an image photographed may be prevented from being loss. A video signal based on an image of an original photograph may be stored in original form when characters and patterns are incorporated into the image of the photograph.
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: February 27, 2001
    Assignee: Sony Corporation
    Inventors: Akihiro Kikuchi, Tomohiro Yamada
  • Patent number: 6137695
    Abstract: A self-oscillation type switching power supply apparatus comprises a transformer T having a primary winding N1, a secondary winding N2, and a feedback winding N.sub.B, a switching transistor Q1 to interrupt current in the primary winding supplied with an input power supply voltage, a feedback signal being provided from the feedback winding N.sub.B and a rectifying smoothing circuit connected to the secondary winding. The self-oscillation type switching power supply apparatus further comprises a controlling transistor Q3 to control a positive feedback signal for the switching transistor Q1 from the feedback winding N.sub.B, and a detector detecting a flyback voltage produced in the feedback winding N.sub.B when the switching transistor Q1 is turned off, and changing-over the state of the controlling transistor Q3 to keep the switching transistor Q1 in the off-state when the flyback voltage goes lower than a predetermined value.
    Type: Grant
    Filed: January 4, 1999
    Date of Patent: October 24, 2000
    Assignee: Murata Manufacturing co., Ltd.
    Inventors: Akihiko Takida, Tomohiro Yamada
  • Patent number: 6076244
    Abstract: A method of manufacturing an actuator including an ink pump section made by forming a spacer plate with a plurality of window portions formed therein, a closure plate stacked on one side of the spacer plate for covering the window portions and a connection plate stacked on the other side of the spacer plate for covering the above window portions. These plates are formed as laminated ceramic green sheets that are later fired to form an integrated body. A piezoelectric/electrostrictive operating section composed of electrodes and a piezoelectric/electrostrictive layer is then formed on the outer surface of the closure plate. Thereafter, the actuator is pasted to a holding adhesive film and the holding adhesive film is stripped from the actuator after subjecting the actuator to a given inspection, if necessary, or to cutting into a given shape, if necessary. Subsequently, the actuator is heat-treated. Then, onto this actuator, an ink nozzle member with a plurality of nozzle holes is stacked and joined.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: June 20, 2000
    Assignees: Seiko Epson Corporation, NGK Insulators, Ltd.
    Inventors: Motonori Okumura, Takaichi Wada, Tadao Furuta, Shinsuke Yano, Tomohiro Yamada, Nobuo Takahashi