Patents by Inventor Masaki Yamamoto

Masaki Yamamoto 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: 20130317647
    Abstract: There is provided a control apparatus for a drive mechanism driven by a pneumatic artificial muscle, the control apparatus including a pressure controller that controls pressure of the pneumatic artificial muscle, a desired pressure calculator that calculates, based on a pneumatic artificial muscle model, a desired pressure of the pneumatic artificial muscle in order to control motion of the drive mechanism, a pneumatic artificial muscle model error estimator that estimates aging variation in a contraction percentage error between the pneumatic artificial muscle and the pneumatic artificial muscle model, a pneumatic artificial muscle model updater that updates the pneumatic artificial muscle model so as to reflect the aging variation based on an estimation result of the pneumatic artificial muscle model error estimator, and a lifetime predictor that predicts a lifetime of the pneumatic artificial muscle based on the estimation result of the pneumatic artificial muscle model error estimator.
    Type: Application
    Filed: July 30, 2013
    Publication date: November 28, 2013
    Applicant: Panasonic Corporation
    Inventors: Yasunao OKAZAKI, Masaki YAMAMOTO
  • Patent number: 8582412
    Abstract: This invention allows super-resolution reproduction with which a better bER value is attainable, when information is recorded by a random pattern including a mark length not longer than a resolution limit, by use of a highly versatile signal decoding method. Information is recorded as marks and spaces coded by RLL(1,7) modulation, which each of the marks and spaces have one of a plurality of lengths, and 2T marks and 2T spaces of the marks and spaces being formed are shorter than 0.12 ?m. An information recording layer (20) includes a reproduction film (21) and a reflective film (22) which are provided in this order from a side from which reproducing light is incident, which reproduction film is made of (i) zinc oxide, (ii) strontium titanate, (iii) titanium oxide, (iv) cerium oxide, or (v) a material including at least one of the (i) through (iv), and which reflective film is made of tantalum or titanium.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: November 12, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Go Mori, Hirohisa Yamada, Masaki Yamamoto, Yasuhiro Harada, Hideharu Tajima, Shigemi Maeda, Yoshiteru Murakami
  • Patent number: 8576688
    Abstract: An optical data recording medium, in which irradiation of a light beam is used for recording and/or reproducing data includes (i) a substrate having an a rise and/or a recess which are a light-incident surface, (ii) a reflective layer, provided on the light-incident surface of the substrate, for reflecting the light beam, (iii) a light absorption layer for converting, to heat, a light of the light beam to heat on the surface of the reflective layer, (iv) a reproducing layer, provided on the surface of the heat-light converting layer, having a transmittance that changes in accordance with a light intensity distribution of the light beam. The optical data recording medium is excellent in super-resolution property, and enables reproduction of a shorter mark length.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: November 5, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hideharu Tajima, Nobuyuki Takamori, Go Mori, Masaki Yamamoto
  • Patent number: 8570766
    Abstract: A shield case includes a first shield member and a second shield member coupled to the first shield member to form the shield case. A concave portion is capable of accommodating a sealing member for sealing inner space of the shield case by contacting the first shield member and the second shield member, and is formed on the second shield member. On each of the first shield member and the second shield member, a paint film portion is formed on an area of the shield case external to the concave portion. On the first shield member or the second shield member or combination thereof, a convex portion is formed on the area of the shield case on the inner space side and internal to the concave portion. The surfaces of the first shield member and the second shield member contact each other at the convex portion.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: October 29, 2013
    Assignee: Fujitsu Limited
    Inventors: Kazuya Noguchi, Hiromi Maeda, Toshimitsu Kobayashi, Atsushi Kaneko, Yoshihiro Waki, Masaki Yamamoto
  • Patent number: 8570850
    Abstract: A super-resolution optical recording medium includes: a medium information region on which medium identification information is recorded; a content region on which content information is recorded; and a blank region provided between the medium information region and the content region and in which at least two tracks are provided so as to connect a train of prepits in the medium information region and a train of prepits in the content region. No information is recorded on the blank region. Thus, a super-resolution optical recording medium is provided in which a region on which medium identification information is recorded and a region on which content information is recorded are different in track pitch and in which a reproduction error hardly occurs when reproduction shifts from the region on which the medium identification information is recorded to the region on which the content information is recorded.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: October 29, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toshihiko Sakai, Hirohisa Yamada, Masaki Yamamoto, Yasuhiro Harada, Go Mori, Hideharu Tajima, Nobuyuki Takamori
  • Publication number: 20130265224
    Abstract: In a display system, a remote control has a first signal production component for producing a first image switching signal, which is a command signal to switch between first image data, which includes confidential information and second image data, which is non-confidential information, in response to a manipulation component being manipulated by a specific user. A display device has a first image switching component that directs switching between the first image data and the second image data displayed on the display device, according to the first image switching signal received from the remote control. When the first image switching signal is inputted, the first image switching component executes first image switching control in which the first image data displayed on the display device is switched to the second image data and the second image data displayed on the display device is switched to the first image data.
    Type: Application
    Filed: June 5, 2013
    Publication date: October 10, 2013
    Inventors: Keigo FUJITA, Masaki YAMAMOTO, Takumi NISHIMURA
  • Publication number: 20130229904
    Abstract: A reproduction method for reproducing a rewritable and readable optical information storage medium in such a manner that an information recording layer is disclosed. The reproduction method comprising: reading setting information of reproduction laser power for each information recording layer of the rewritable and readable optical information storage medium, the setting information being stored in the rewritable and readable optical information storage medium; and setting, based on the setting information thus read, reproduction laser power for the information recording layer that is closest to a reproduction-laser-incident surface to be not less than 1.0 mW but less than 1.1 mW.
    Type: Application
    Filed: March 18, 2013
    Publication date: September 5, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Masaki Yamamoto, Hirohisa Yamada, Yasuhiro Harada, Go Mori, Hideharu Tajima, Shigemi Maeda, Yoshiteru Murakami
  • Patent number: 8514674
    Abstract: An optical information recording medium reproducing apparatus 1 includes: a signal detecting/extracting section 15 extracting, from reproduction signal data, extracted reproduction signal data corresponding to a predetermined data pattern; a calculating circuit 10 calculating, from the extracted reproduction signal data, a reproducing power control value for controlling laser light reproducing power; and a reproducing power control section 16 controlling the reproducing power based on the reproducing power control value. The predetermined data pattern is obtained from a space which is sandwiched between marks of ?/2NA or longer and is shorter than ?/4NA and/or a mark which is sandwiched between spaces of ?/2NA or longer and is shorter than ?/4NA.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: August 20, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masaki Yamamoto, Hirohisa Yamada, Yasuhiro Harada, Hideharu Tajima, Jun Akiyama
  • Patent number: 8491326
    Abstract: There is provided a downsized electrical connection box in which the reliability of the mechanical connection between blocks provided in the electrical connection box is improved. The electrical connection box 1 includes a plurality of electric components, a first block 3 mounted with the electric components and a second block mounted with the electric components. The first block 3 includes a tubular-shaped first member 32, 33 projecting towards the second block 5. The second block 5 includes a second member 52, 53 arranged to be slidably inserted into the first member. The first and the second blocks 3, 5 are coupled to each other by slidably inserting the second member 52, 53 into the first member 32, 33. At least one electric component 8 of the plurality of electric components is received inside the first and the second members 32, 52, 33, 53.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: July 23, 2013
    Assignee: Yazaki Corporation
    Inventors: Hisashi Sato, Masaki Yamamoto, Kazuaki Nakamura, Masayuki Hagiwara
  • Patent number: 8489236
    Abstract: There is provided a control apparatus and control method for robot arm, robot, control program for robot arm, and integrated electronic circuit, which can improve robot arm operability upon performing tasks such as cooperative conveyance and direct teaching. The grip portion separated from the end effector attached to the robot arm is provided. When a person grips and shifts the grip portion, a tracking control unit controls so that the robot arm follows the shift. A fixing switch unit switches between a fixing state where, upon switching to “playback mode”, a fixing portion is located at a fixed position to fix the end effector and the grip portion to maintain a gap distance therebetween and a relatively shiftable state where, upon switching to “teaching mode”, the fixing portion is located at an accommodated position to relatively shift them from each other without maintaining the gap distance.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: July 16, 2013
    Assignee: Panasonic Corporation
    Inventors: Yudai Fudaba, Masaki Yamamoto, Yuko Tsusaka, Taichi Sato
  • Patent number: 8467140
    Abstract: A magnetic recording apparatus includes: a magnetic recording medium having a recording surface on which a plurality of magnetic recording cells magnetically isolated from each other are arranged; a magnetic writing element recording information to the magnetic recording cells under a condition in accordance with setting information; a magnetic reading element reproducing information recorded in the magnetic recording cells; a memory storing the setting information for writing; and a processor for executing a program code.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: June 18, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toshihiko Sakai, Masaki Yamamoto, Yasuhiro Harada, Go Mori, Hideharu Tajima, Yoshiteru Murakami
  • Patent number: 8462606
    Abstract: A super-resolution medium (1) has a medium identification information for specifying a type of medium recorded in a medium information area (3) by use of pre-pits having a length not shorter than a length of a resolution limit of an optical system in a reproducing device (10).
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: June 11, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hideharu Tajima, Masaki Yamamoto, Go Mori, Nobuyuki Takamori
  • Publication number: 20130142029
    Abstract: An optical information recording medium has a first information recording layer (20) and a second information recording layer (40) each of which includes (i) a group of pre-pits (31, 51) constituting marks (32, 52) and spaces (33, 53) and (ii) a super-resolution film (23, 43), the marks (32, 52) and the spaces (33, 53) having different lengths, an average length of a smallest mark that is smallest in length and a smallest space that is smallest in length being less than or equal to a resolution limit of a reproduction optical system for reproducing information recorded on the first information recording layer (20) and the second information recording layer (40), the group of pre-pits (31, 51) being formed so that a push-pull signal for the reproduction optical system to reproduce the information recorded by the group of pre-pits is negative in polarity. This provides an inexpensive and high-capacity multilayer optical information recording medium based on a super-resolution technology.
    Type: Application
    Filed: June 10, 2011
    Publication date: June 6, 2013
    Inventors: Hideharu Tajima, Go Mori, Yasuhiro Harada, Masaki Yamamoto, Hirohisa Yamada, Masahito Konishi
  • Patent number: 8446807
    Abstract: A super-resolution medium (1) has a medium identification information for specifying a type of medium recorded in a medium information area (3) by use of pre-pits having a length not shorter than a length of a resolution limit of an optical system in a reproducing device (10).
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: May 21, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hideharu Tajima, Masaki Yamamoto, Go Mori, Nobuyuki Takamori
  • Patent number: 8445624
    Abstract: A subject for the invention is to provide a polycarbonate having excellent mechanical strength, heat resistance, a low refractive index, a large Abbe number, reduced birefringence, and excellent transparency. The invention relates to a polycarbonate characterized by being obtained by subjecting one or more dihydroxy compounds including a dihydroxy compound having at least one linking group —CH2—O— in the molecule thereof to melt polycondensation with a carbonic acid diester, and by having a reduced viscosity of from 0.40 dL/g to 1.70 dL/g and a formic acid content lower than 5 ppm by weight.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: May 21, 2013
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Michiaki Fuji, Shingo Namiki, Masaki Yamamoto
  • Patent number: 8441905
    Abstract: This invention allows super-resolution reproduction with which a better bER value is attainable, when information is recorded by a random pattern including a mark length not longer than a resolution limit, by use of a highly versatile signal decoding method. Information is recorded as marks and spaces coded by RLL(1,7) modulation, which each of the marks and spaces have one of a plurality of lengths, and 2T marks and 2T spaces of the marks and spaces being formed are shorter than 0.12 ?m. An information recording layer (20) includes a reproduction film (21) and a reflective film (22) which are provided in this order from a side from which reproducing light is incident, which reproduction film is made of (i) zinc oxide, (ii) strontium titanate, (iii) titanium oxide, (iv) cerium oxide, or (v) a material including at least one of the (i) through (iv), and which reflective film is made of tantalum or titanium.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: May 14, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Go Mori, Hirohisa Yamada, Masaki Yamamoto, Yasuhiro Harada, Hideharu Tajima, Shigemi Maeda, Yoshiteru Murakami
  • Patent number: 8422980
    Abstract: The present invention provides a high-frequency circuit capable of acquiring the original transmission characteristics of a filter by preventing capacitive coupling between input and output terminals of the filter externally attached to the integrated circuit and effectively using a mounting space. The high-frequency circuit includes a rectangular integrated circuit 10 having two long sides 10a and 10b and two short sides 10c and 10d and a SAW filter 15, disposed to be adjacent to the short side 10d of the integrated circuit 10, having input terminals 24a and 24b disposed on the long side 10a side and output terminals 28a and 28b disposed on the other long side 10b side.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: April 16, 2013
    Assignee: Alps Electric Co., Ltd.
    Inventor: Masaki Yamamoto
  • Patent number: 8422345
    Abstract: In an optical information storage medium reproduction apparatus (10) for reproducing an optical information storage medium including a plurality of information recording layers each including a recording mark having a length shorter than an optical system resolution limit, reproduction laser power for reading an information recording layer closest to a reproduction-laser-incident surface of the optical information storage medium is set to be lower than reproduction laser power for reading an information recording layer farthest from the reproduction-laser-incident surface but not lower than minimum reproduction laser power that satisfies a reproduction signal characteristic that the optical information storage medium reproduction apparatus (10) requires.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: April 16, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masaki Yamamoto, Hirohisa Yamada, Yasuhiro Harada, Go Mori, Hideharu Tajima, Shigemi Maeda, Yoshiteru Murakami
  • Patent number: 8422344
    Abstract: In an optical information storage medium reproduction apparatus (10) for reproducing an optical information storage medium including a plurality of information recording layers each including a recording mark having a length shorter than an optical system resolution limit, reproduction laser power for reading an information recording layer closest to a reproduction-laser-incident surface of the optical information storage medium is set to be lower than reproduction laser power for reading an information recording layer farthest from the reproduction-laser-incident surface but not lower than minimum reproduction laser power that satisfies a reproduction signal characteristic that the optical information storage medium reproduction apparatus (10) requires.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: April 16, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masaki Yamamoto, Hirohisa Yamada, Yasuhiro Harada, Go Mori, Hideharu Tajima, Shigemi Maeda, Yoshiteru Murakami
  • Patent number: 8411538
    Abstract: In an optical information storage medium reproduction apparatus (10) for reproducing an optical information storage medium including a plurality of information recording layers each including a recording mark having a length shorter than an optical system resolution limit, reproduction laser power for reading an information recording layer closest to a reproduction-laser-incident surface of the optical information storage medium is set to be lower than reproduction laser power for reading an information recording layer farthest from the reproduction-laser-incident surface but not lower than minimum reproduction laser power that satisfies a reproduction signal characteristic that the optical information storage medium reproduction apparatus (10) requires.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: April 2, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masaki Yamamoto, Hirohisa Yamada, Yasuhiro Harada, Go Mori, Hideharu Tajima, Shigemi Maeda, Yoshiteru Murakami