Patents by Inventor Ryo Matsubara

Ryo Matsubara 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: 20090115331
    Abstract: The present invention provides a plasma display device capable of maintaining an electromagnetic wave shielding effect. The plasma display device includes an optical filter having a conductive film, a frame supporting the periphery of the optical filter, a conductive member fixed to the frame, and a conductive back cover with the periphery thereof being contacted with the conductive member. Flexible conductive connecting portions are provided on the periphery of the conductive film, and the connecting portions are connected electrically, in a slack state, to the conductive member, and thereby the conductive film and the conductive member are connected electrically to each other.
    Type: Application
    Filed: October 21, 2008
    Publication date: May 7, 2009
    Applicant: PANASONIC CORPORATION
    Inventors: Hiroshi KUNIMOTO, Hirotsugu FUSAYASU, Kei ICHIKAWA, Seiji HAMADA, Ryo MATSUBARA
  • Publication number: 20090108753
    Abstract: The present invention provides a plasma display device that allows, at a low cost, reliable electrical connection between a film and a conductive member with low impedance as well as prevention of friction between them. This plasma display device includes a transparent substrate, a film attached to the rear surface of the transparent substrate, a back cover, and a conductive member for connecting the film and the back cover electrically. Convex portions are formed at a predetermined distance apart from each other on the facing surface of the conductive member facing the periphery of the film, while a concave portion or concave portions are formed on the rear surface of the transparent substrate. The convex portions are thus fitted in the concave portion or the concave portions with the film interposed therebetween.
    Type: Application
    Filed: October 15, 2008
    Publication date: April 30, 2009
    Applicant: Panasonic Corporation
    Inventors: Ryo MATSUBARA, Hirotsugu FUSAYASU, Hiroshi KUNIMOTO, Kei ICHIKAWA, Seiji HAMADA
  • Publication number: 20090107327
    Abstract: A capacity-variable type swash plate compressor in which the preferable operability of a link mechanism and reduction of manufacturing cost are realized is provided. According to the compressor in the present invention, a link mechanism includes one swash plate arm and intermediate arms. The intermediate arms include first and second intermediate arms. The first and second intermediate arms are joined while being rotatably supported by a lug member and the swash plate arm via a lug-side pin which constitutes a lug-side axis and a swash-plate-side pin which constitutes a swash-plate-side axis and clamping the lug member and the swash plate arm via the lug-side pin and the swash-plate-side pin so as to allow a sliding movement.
    Type: Application
    Filed: September 26, 2008
    Publication date: April 30, 2009
    Inventors: Masaki Ota, Masahiro Kawaguchi, Hiroshi Kubo, Ryo Matsubara, Naofumi Kimura, Hideharu Yamashita
  • Publication number: 20090097990
    Abstract: A swash plate type compressor has a cylinder block, a drive shaft, a piston, a pair of first and second shoes and a swash plate. The swash plate has a first surface on the far side of the swash plate from the cylinder bore in slide contact with the first shoe and a second surface on the same side of the swash plate as the cylinder bore in slide contact with the second shoe. The swash plate has first and second edges formed between the first and second surfaces and an outer peripheral surface of the swash plate, respectively. The swash plate has a curved surface formed on the first edge at and adjacent to the bottom dead center of the swash plate whose radius of curvature is larger than that of the surface of the second edge.
    Type: Application
    Filed: September 22, 2008
    Publication date: April 16, 2009
    Inventors: Hiroshi Kubo, Masahiro Kawaguchi, Masaki Ota, Ryo Matsubara, Hideharu Yamashita, Hiroaki Kayukawa, Yasunori Makino
  • Publication number: 20090003464
    Abstract: A differential transmission line connector with little unwanted radiation noise is provided. A connector connects a differential transmission pattern for multiple transmission of a group of three differential signals and a differential transmission cable. The differential transmission pattern is provided with three signal lines, and the differential transmission cable also is provided with three signal lines. In a plane that is perpendicular to the longitudinal direction of the differential transmission pattern and the differential transmission cable, the signal lines are positioned at the apexes of an equilateral triangle.
    Type: Application
    Filed: June 26, 2008
    Publication date: January 1, 2009
    Inventors: Ryo MATSUBARA, Hirotsugu Fusayasu, Shinichi Tanimoto, Seiji Hamada
  • Publication number: 20080304578
    Abstract: A transmission cable that has three signal lines, and in which there is little unwanted radiation noise, is provided. In a section that is perpendicular to the longitudinal direction of the differential transmission cable, the distance between any two signal lines of the three signal lines is equal to a predetermined value. The differential transmission cable is twisted in its longitudinal direction. The differential transmission cable further includes a dielectric core line, and the signal lines are formed on the surface of the dielectric core line. In the differential transmission cable, the signal lines are formed in a helix in the longitudinal direction of the dielectric core line.
    Type: Application
    Filed: June 9, 2008
    Publication date: December 11, 2008
    Inventors: Ryo Matsubara, Hirotsugu Fusayasu, Shinichi Tanimoto, Seiji Hamada
  • Publication number: 20080266019
    Abstract: A differential transmission line that has three or more signal lines and with which there is little unwanted radiation noise is provided. The differential transmission line 2 is provided with three signal lines 2a, 2b, and 2c that transmit differential signals from a differential driver IC1 to a differential receiver IC3, and the majority of the signal lines 2a, 2b, and 2c is provided in conductor layers T2 and T3 of a printed circuit board 4.
    Type: Application
    Filed: April 24, 2008
    Publication date: October 30, 2008
    Inventors: Hirotsugu Fusayasu, Seiji Hamada, Shinichi Tanimoto, Ryo Matsubara
  • Patent number: 7397322
    Abstract: A radiation noise suppression circuit for a differential transmission line includes a differential transmission line which has plus line signal wiring to which a plus line signal of a differential signal is applied, and minus line signal wiring to which a minus line signal of the differential signal is applied, and connects a differential driver and a differential receiver. Plus line signal GND wiring and minus line signal GND wiring which are connected between the differential driver and the differential receiver are wired along the differential transmission line. A distance between the plus line signal wiring and the plus line signal GND wiring is substantially equal to a distance between the minus line signal wiring and the minus line signal GND wiring.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: July 8, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Seiji Hamada, Hirotsugu Fusayasu, Shinichi Tanimoto, Ryo Matsubara
  • Patent number: 7388449
    Abstract: A radiation noise suppression circuit for a differential transmission line includes a differential transmission line which has plus line signal wiring of a differential signal and minus line signal wiring of the differential signal, and connects a differential driver and a differential receiver; signal GND wiring. A first impedance element and a second impedance element have substantially the same impedance value, and are connected in series between the plus line signal wiring and the minus line signal wiring at a location nearer to the differential receiver than a coil unit. A third impedance element is connected to a junction point. The first impedance element and the second impedance element are connected.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: June 17, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Seiji Hamada, Hirotsugu Fusayasu, Shinichi Tanimoto, Ryo Matsubara
  • Patent number: 7339443
    Abstract: To provide a common mode radiation inhibit circuit for a differential transmission line which can inhibit quadratic common mode radiation by ensuring a continuity of grand level at a point of change of a signal grand, including a differential transmission line which is constituted of a pair of signal wiring, and transmits differential signals, signal grounds which are arranged along the differential transmission line, and each have a change point on its way, a transformer, and a reference ground, wherein a primary side of the transformer is connected between an electric midpoint of the pair of signal wiring, and the signal ground at one side of the front and back of the change point of the signal grounds, wherein the secondary side of the transformer is connected between the electric midpoint of the pair of signal wiring and the signal ground at another side of the front and back of the change point, and wherein the reference ground is connected to a point which becomes a neutral sheet of the primary side of
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: March 4, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hirotsugu Fusayasu, Shin-ichi Tanimoto, Seiji Hamada, Ryo Matsubara
  • Patent number: 7243502
    Abstract: In a control system of a variable displacement compressor, a pressure sensing means mechanically detects at least one pressure in the refrigerant circuit. A varying means varies a reference value for positioning a valve body. A pressure detector electrically detects the pressure detected by the pressure sensing means in the refrigerant circuit and/or physical quantity which correlates with the detected pressure. A calculator calculates a maximum value of urging force applied to the valve body by the varying means toward an increasing side of the displacement of the compressor. The urging force applied to the valve body is controlled not to exceed the maximum value toward the increasing side of the displacement. The displacement of the compressor is maximized by the pressure sensing means under the pressure for calculating the maximum value when the varying means applies urging force of the maximum value to the valve body.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: July 17, 2007
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Satoshi Umemura, Yuji Hashimoto, Ryo Matsubara, Masakazu Murase, Tatsuya Koide
  • Publication number: 20060125570
    Abstract: A radiation noise suppression circuit for a differential transmission line includes a differential transmission line which has plus line signal wiring of a differential signal and minus line signal wiring of the differential signal, and connects a differential driver and a differential receiver; signal GND wiring one end of which is connected to the differential driver, and is wired outside along the differential transmission line; a coil unit in which each of the plus line signal wiring, the minus line signal wiring, and said signal GND wiring is wound in the same winding direction; a first impedance element and a second impedance element which have substantially the same impedance value, and which are connected in series between the plus line signal wiring and the minus line signal wiring at a location nearer to the differential receiver than the coil unit; and, a third impedance element one end of which is connected to a junction point, where the first impedance element and the second impedance element are
    Type: Application
    Filed: December 8, 2005
    Publication date: June 15, 2006
    Inventors: Seiji Hamada, Hirotsugu Fusayasu, Shinichi Tanimoto, Ryo Matsubara
  • Publication number: 20060125571
    Abstract: A radiation noise suppression circuit for a differential transmission line includes a differential transmission line which has plus line signal wiring to which a plus line signal of a differential signal is applied, and minus line signal wiring to which a minus line signal of the differential signal is applied, and connects a differential driver and a differential receiver, plus line signal GND wiring and minus line signal GND wiring which are connected between the differential driver and the differential receiver, and are wired along the differential transmission line, and a coil unit in which each of the plus line signal wiring, minus line signal wiring, plus line signal GND wiring, and minus line signal GND wiring is wound in the same winding direction, wherein a distance between the plus line signal wiring and the plus line signal GND wiring is substantially equal to a distance between the minus line signal wiring and the minus line signal GND wiring.
    Type: Application
    Filed: December 8, 2005
    Publication date: June 15, 2006
    Inventors: Seiji Hamada, Hirotsugu Fusayasu, Shinichi Tanimoto, Ryo Matsubara
  • Publication number: 20060119449
    Abstract: To provide a common mode radiation inhibit circuit for a differential transmission line which can inhibit quadratic common mode radiation by ensuring a continuity of grand level at a point of change of a signal grand, including a differential transmission line which is constituted of a pair of signal wiring, and transmits differential signals, signal grounds which are arranged along the differential transmission line, and each have a change point on its way, a transformer, and a reference ground, wherein a primary side of the transformer is connected between an electric midpoint of the pair of signal wiring, and the signal ground at one side of the front and back of the change point of the signal grounds, wherein the secondary side of the transformer is connected between the electric midpoint of the pair of signal wiring and the signal ground at another side of the front and back of the change point, and wherein the reference ground is connected to a point which becomes a neutral sheet of the primary side of
    Type: Application
    Filed: December 5, 2005
    Publication date: June 8, 2006
    Inventors: Hirotsugu Fusayasu, Shin-ichi Tanimoto, Seiji Hamada, Ryo Matsubara
  • Patent number: 6910344
    Abstract: A compressor torque estimate device is used for a variable displacement compressor whose displacement is variable based on a compressor control signal for estimating a compressor torque of the compressor. The compressor torque estimate device includes a torque calculator and a corrector. The torque calculator calculates a torque required for driving the compressor based on the compressor control signal, thereby obtaining a calculated torque. The corrector corrects the calculated torque by a procedure of first-order lag, thereby obtaining a corrected torque. The corrector also estimates the corrected torque to be the compressor torque.
    Type: Grant
    Filed: January 6, 2004
    Date of Patent: June 28, 2005
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Ryo Matsubara, Satoshi Umemura, Shingo Kumazawa, Hiroyuki Nakaima, Masahiro Kawaguchi
  • Publication number: 20040221663
    Abstract: A deformation member is located between a supporting member and a bearing. A deformation detection device detects the amount of deformation of the deformation member at at least two positions that are spaced from each other in a circumferential direction. Based on the deformation amount, a computer computes unbalanced load that is applied to the supporting member by the tension of a belt. The computer computes tension of an advancing section and tension of a trailing section of the belt in the moving direction of the belt with respect to a section of the belt engaged with a rotor. Therefore, the strength of the supporting member is maintained while improving the detection accuracy.
    Type: Application
    Filed: March 30, 2004
    Publication date: November 11, 2004
    Inventors: Satoshi Umemura, Ryo Matsubara, Tatsuya Hirose, Yuji Hashimoto
  • Publication number: 20040211204
    Abstract: A compressor torque estimate device is used for a variable displacement compressor whose displacement is variable based on a compressor control signal for estimating a compressor torque of the compressor. The compressor torque estimate device includes a torque calculator and a corrector. The torque calculator calculates a torque required for driving the compressor based on the compressor control signal, thereby obtaining a calculated torque. The corrector corrects the calculated torque by a procedure of first-order lag, thereby obtaining a corrected torque. The corrector also estimates the corrected torque to be the compressor torque.
    Type: Application
    Filed: January 6, 2004
    Publication date: October 28, 2004
    Inventors: Ryo Matsubara, Satoshi Umemura, Shingo Kumazawa, Hiroyuki Nakaima, Masahiro Kawaguchi
  • Patent number: 6783332
    Abstract: A control valve controls the displacement of a variable displacement compressor. The control valve includes a first valve body for adjusting the pressure in a crank chamber, a pressure sensing member, which is displaced in accordance with the pressure difference between two pressure points located in a refrigerant circuit to move the first valve body, an electromagnetic actuator for urging the pressure sensing member, and a second valve body, which is operably coupled to the pressure sensing member. The second valve body adjusts the opening degree of a discharge passage of the refrigerant circuit in accordance with the displacement of the pressure sensing member. Therefore, compared to a case where the first and second valve bodies are independently arranged in the compressor, the number of parts are reduced, which reduces the manufacturing cost.
    Type: Grant
    Filed: July 25, 2002
    Date of Patent: August 31, 2004
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Satoshi Umemura, Kazuya Kimura, Ryo Matsubara, Masaki Ota
  • Publication number: 20040165994
    Abstract: A control valve includes a separation portion, which is part of a rod, blocks a through hole that connects a valve chamber and a second chamber with each other. Therefore, the pressure of the second chamber is not directly affected by changes in the opening degree of the control valve. The second chamber and a valve hole forming a part of the through hole are both connected to a second pressure zone through an upstream section of a supply passage. This prevents creation of pressure difference between the valve hole and the second chamber, and thus prevents entry of foreign particles in sliding portions between the through hole and the rod.
    Type: Application
    Filed: December 4, 2003
    Publication date: August 26, 2004
    Inventors: Satoshi Umemura, Tatsuya Hirose, Yuji Hashimoto, Ryo Matsubara, Junya Suzuki
  • Publication number: 20040129009
    Abstract: In a control system of a variable displacement compressor, a pressure sensing means mechanically detects at least one pressure in the refrigerant circuit. A varying means varies a reference value for positioning a valve body. A pressure detector electrically detects the pressure detected by the pressure sensing means in the refrigerant circuit and/or physical quantity which correlates with the detected pressure. A calculator calculates a maximum value of urging force applied to the valve body by the varying means toward an increasing side of the displacement of the compressor. The urging force applied to the valve body is controlled not to exceed the maximum value toward the increasing side of the displacement. The displacement of the compressor is maximized by the pressure sensing means under the pressure for calculating the maximum value when the varying means applies urging force of the maximum value to the valve body.
    Type: Application
    Filed: December 18, 2003
    Publication date: July 8, 2004
    Inventors: Satoshi Umemura, Yuji Hashimoto, Ryo Matsubara, Masakazu Murase, Tatsuya Koide