Patents by Inventor Akira Nakagawa

Akira Nakagawa 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).

  • Method for arc welding
    Patent number: 8993926
    Abstract: A method for arc welding can control the increase slopes of the short-circuit current and the inflection point of the increase slopes in the welding start period to be smaller than in the steady-state welding period. Thus, the increase slopes of the short-circuit current and the inflection point are made different between the welding start period and the steady-state welding period, thereby reducing sputtering in the welding start period.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: March 31, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Junji Fujiwara, Atsuhiro Kawamoto, Akira Nakagawa
  • Motion picture encoding device and motion picture decoding device
    Patent number: 8976868
    Abstract: When a prediction is made between fields with different parity, the predicative efficiency of a chrominance vector is improved by adaptively switching the generation of a chrominance motion vector depending on a encoding/decoding field parity (top/bottom) and a reference field parity (top/bottom), and the coding efficiency is improved accordingly.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: March 10, 2015
    Assignee: Fujitsu Limited
    Inventors: Akira Nakagawa, Hidenobu Miyoshi
  • Encoding apparatus and decoding apparatus
    Patent number: 8971409
    Abstract: An encoding apparatus having a direct mode as a prediction mode, when a pixel with opposite parity from a top field to a bottom field, for example, is referred to for obtaining a reference vector in the direct mode, performs correction by adding or subtracting a value corresponding to a half pixel to or from a value of the obtained reference vector. The encoding apparatus, when a pixel with opposite parity is referred to for obtaining a first and a second direct vector by temporally scaling the corrected reference vector, performs correction by adding or subtracting a value corresponding to a half pixel to or from values of the obtained direct vectors.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: March 3, 2015
    Assignee: Fujitsu Limited
    Inventors: Akihiro Yamori, Satoshi Shimada, Akira Nakagawa
  • VIDEO DECODER, VIDEO ENCODER, VIDEO DECODING METHOD, AND VIDEO ENCODING METHOD
    Publication number: 20150049804
    Abstract: A video decoder decoding an encoded stream includes a parallel entropy decoding part to entropy decode the stream of blocks in block lines in parallel, a parallel QP prediction part to compute prediction values of the blocks in the block lines in parallel, and a parallel decoding processing part to generate decoded pixels of the blocks in the block lines in parallel, the decoded pixel being obtained utilizing data decoded by the parallel entropy decoding part and the prediction value. When performing computing processing in parallel per unit of N block lines, the processing is performed on a processing block in a (K?1)th block line preceding a processing block in a Kth block line by at least one block in a horizontal position to compute the prediction value of the processing block by referring to a block already processed corresponding to the processing block.
    Type: Application
    Filed: January 16, 2013
    Publication date: February 19, 2015
    Inventors: Satoshi Shimada, Kimihiko Kazui, Junpei Koyama, Akira Nakagawa
  • Solid composition for pest control
    Patent number: 8946297
    Abstract: To provide an anthranilamide formulation compound for improving pest controlling effects. A solid composition for pest control which comprises an amorphous anthranilamide compound or its salt as a pesticidal active ingredient, a nonionic surfactant and/or an anionic surfactant and a mineral carrier.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: February 3, 2015
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Masayuki Morita, Takao Awazu, Akira Nakagawa, Taku Hamamoto
  • ACTIVE ENERGY RAY CURABLE COMPOSITION, AND CURED PRODUCT AND USE THEREOF
    Publication number: 20150030820
    Abstract: Provided is an active energy ray-curable composition that is capable of improving adhesiveness of a cured product and of suppressing detachment or peeling of the cured product as well as a cured product and use thereof. The active energy ray-curable composition contains, as active ingredients, an oxetane alcohol represented by the following structural formula (1) or (2), a silane coupling agent, and a photoacid-generating agent. A silicon component in the silane coupling agent is contained in an amount of preferably 1 to 21% by mass, in terms of silica (SiO2), in the active energy ray-curable composition. In the formula, p is an integer of 1 to 10.
    Type: Application
    Filed: April 26, 2013
    Publication date: January 29, 2015
    Inventors: Akira Nakagawa, Eisuke Ninomiya
  • Arc welding control method and arc welding control system
    Patent number: 8933370
    Abstract: A welding control method alternately repeats a short circuit period, during which a welding wire and an object to be welded short-circuit, and an arc period, during which an arc is generated and discharged, to weld the object to be welded. The method compares average output voltage, which is an average of welding voltage calculated during welding, to set voltage preliminarily set, and controls a welding output current produced when an arc is generated based on the comparison result therefrom, to regulate the meltage of the wire for adjusting the arc length, which brings the short circuit cycle closer to a constant one when a disturbance (e.g. extended or shortened arc length) occurs.
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: January 13, 2015
    Assignee: Panasonic Corporation
    Inventors: Kimiya Sato, Atsuhiro Kawamoto, Akira Nakagawa, Junji Fujiwara
  • MOTION PICTURE ENCODING DEVICE AND MOTION PICTURE DECODING DEVICE
    Publication number: 20140369418
    Abstract: When a prediction is made between fields with different parity, the predicative efficiency of a chrominance vector is improved by adaptively switching the generation of a chrominance motion vector depending on encoding/decoding field parity (top/bottom) and a reference field parity (top/bottom), and the coding efficiency is improved accordingly.
    Type: Application
    Filed: August 29, 2014
    Publication date: December 18, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Akira NAKAGAWA, Hidenobu MIYOSHI
  • Arc welding control method
    Patent number: 8901454
    Abstract: In a method for controlling pulse arc welding where an arc is created between a wire and a base material, a pulse waveform different from the pulse waveform for steady-state welding is outputted when a predetermined time has passed since short-circuit welding control was started at arc start, and after a sufficiently large melt pool is formed, the pulse waveform for the steady-state welding is outputted. This reduces the generation of spatters after an arc is created and until the arc is stabilized.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: December 2, 2014
    Assignee: Panasonic Corporation
    Inventors: Akira Nakagawa, Atsuhiro Kawamoto, Junji Fujiwara, Masaru Kowa
  • Data transmitting device and data receiving device
    Patent number: 8879581
    Abstract: A data transmitting device transmits section information, a data broadcasting content, and a broadcasting content in a multiplexed manner. The data transmitting device includes a specified-information embedding unit that embeds information related to a specified image into the section information; a multiplexing unit that multiplexes the section information embedded with the specified information by the specified-information embedding unit, the data broadcasting content, and the broadcasting content; and a transmitting unit that transmits data multiplexed by the multiplexing unit to a data receiving device.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: November 4, 2014
    Assignee: Fujitsu Limited
    Inventors: Atsushi Ichiki, Akira Nakagawa, Shunsuke Kobayashi, Kiyoshi Kohiyama
  • Motion picture encoding device and motion picture decoding device
    Patent number: 8861604
    Abstract: When a prediction is made between fields with different parity, the predicative efficiency of a chrominance vector is improved by adaptively switching the generation of a chrominance motion vector depending on a encoding/decoding field parity (top/bottom) and a reference field parity (top/bottom), and the coding efficiency is improved accordingly.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: October 14, 2014
    Assignee: Fujitsu Limited
    Inventors: Akira Nakagawa, Hidenobu Miyoshi
  • Method of controlling welding
    Patent number: 8859936
    Abstract: A welding control method for a welding device having an output characteristic with a predetermined gradient showing a relation between a welding output voltage and a welding output current. By setting a set target welding voltage that is higher than the set initial welding voltage according to a difference between the set initial welding voltage and the welding output voltage, the welding output voltage is controlled to be the set target welding voltage. Thus, a proper arc length can be achieved early by correcting the change of the arc length due to, for example, motion of the hands of a welding operator.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: October 14, 2014
    Assignee: Panasonic Corporation
    Inventors: Kimiya Sato, Yasushi Mukai, Atsuhiro Kawamoto, Akira Nakagawa, Masaru Kowa
  • ARC WELDING CONTROL METHOD AND ARC WELDING DEVIDE
    Publication number: 20140203004
    Abstract: In arc welding, determining a current value to be high in an early stage of the arc period is effective in reducing spatters caused by feeble short circuit in the arc period. In that case, to sharply decrease the voltage that has increased with increase in current, an inductance value of a reactor has to be kept small. However, a small inductance value causes a problem—weakness against disturbance. The present invention provides an arc welding control method that performs arc welding while repeating the short-circuit period and the arc period. According to the method, changing an inductance value relating to welding output in the arc period offers stable arc welding with fewer spatters and insusceptibility to disturbance.
    Type: Application
    Filed: March 20, 2014
    Publication date: July 24, 2014
    Applicant: Panasonic Corporation
    Inventors: Noriyuki Matsuoka, Yukinori Hirota, Atsuhiro Kawamoto, Junji Fujiwara, Masaru Kowa, Akira Nakagawa
  • Moving-picture coding device and moving-picture coding method
    Patent number: 8780989
    Abstract: A moving-picture coding device that divides a moving-picture signal comprised of a plurality of fields into a plurality of blocks and that can select coded area prediction in a current field and inter-field motion compensation prediction by block units, the moving-picture coding device comprises a forced intra block line determining unit, an intra selecting unit, a vector limit block line determining unit, a vector limit unit, a slice division unit a deblocking filter inhibit unit.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: July 15, 2014
    Assignee: Fujitsu Limited
    Inventors: Hidenobu Miyoshi, Akira Nakagawa, Kimihiko Kazui, Hisanari Kimura
  • ENCODING APPARATUS AND DECODING APPARATUS
    Publication number: 20140185677
    Abstract: An encoding apparatus having a direct mode as a prediction mode, when a pixel with opposite parity from a top field to a bottom field, for example, is referred to for obtaining a reference vector in the direct mode, performs correction by adding or subtracting a value corresponding to a half pixel to or from a value of the obtained reference vector. The encoding apparatus, when a pixel with opposite parity is referred to for obtaining a first and a second direct vector by temporally scaling the corrected reference vector, performs correction by adding or subtracting a value corresponding to a half pixel to or from values of the obtained direct vectors.
    Type: Application
    Filed: March 10, 2014
    Publication date: July 3, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Akihiro YAMORI, Satoshi SHIMADA, Akira NAKAGAWA
  • Moving picture encoding apparatus
    Patent number: 8767819
    Abstract: An encoding circuit (1) encodes an input image. A thinning-out decision unit (2) determines whether or not a picture needs to be thinned out. A dummy picture storage device (4) stores a dummy picture. A dummy picture is encoded data in which all the blocks refer to the same picture, motion vectors of all the blocks are zero, and none of the blocks has prediction residual information. A reference picture selection unit (5) selects a reference picture from among a plurality of referenceable pictures. A header generating unit (7) generates a header to be added to a dummy picture. In the header, the selected reference picture is assigned to an index specifying a reference picture for the dummy picture.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: July 1, 2014
    Assignee: Fujitsu Limited
    Inventors: Satoshi Shimada, Akira Nakagawa, Akihiro Yamori, Noriaki Tsukuda
  • Digital broadcast method, data receiving device, and data transmitting device
    Patent number: 8769562
    Abstract: A digital broadcast method includes receiving audio and video data that form a predetermined content for digital broadcasting; receiving related data indicating a content related to the predetermined content; performing a control that transmits the received related data to a data receiving device prior to transmitting the received audio data and video data; receiving the audio and video data that form the predetermined content and the related data of the predetermined content that have been subject to the control; changing a viewing channel in response to a changing instruction of the viewing channel from a viewer; and outputting, when the viewing channel is changed from a first channel number to a second channel number at the changing and then changed to the first channel number again, the received related data with audio and video data corresponding to the first channel number to an output unit.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: July 1, 2014
    Assignee: Fujitsu Limited
    Inventors: Shunsuke Kobayashi, Atsushi Ichiki, Akira Nakagawa, Kiyoshi Kohiyama
  • Encoding apparatus and decoding apparatus
    Patent number: 8761256
    Abstract: An encoding apparatus having a direct mode as a prediction mode, when a pixel with opposite parity from a top field to a bottom field, for example, is referred to for obtaining a reference vector in the direct mode, performs correction by adding or subtracting a value corresponding to a half pixel to or from a value of the obtained reference vector. The encoding apparatus, when a pixel with opposite parity is referred to for obtaining a first and a second direct vector by temporally scaling the corrected reference vector, performs correction by adding or subtracting a value corresponding to a half pixel to or from values of the obtained direct vectors.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: June 24, 2014
    Assignee: Fujitsu Limited
    Inventors: Akihiro Yamori, Satoshi Shimada, Akira Nakagawa
  • Apparatus and method for coding moving pictures
    Patent number: 8761264
    Abstract: The apparatus includes: orthogonal transforming means for orthogonally transforming an input video signal for each element block, quantizing means for quantizing each obtained transformation coefficient using a quantization parameter; coding means for coding the quantization parameter; decoded picture generating means for generating a reference picture signal for a motion compensation prediction from the quantized results of the quantizing means; filtering means for filtering the obtained reference picture signal at a strength corresponding to the quantization parameter when a non-zero effective transformation coefficient is present with respect to the element block; and controlling means for controlling at least anyone of transformation coefficients to be not zero, when all of the transformation coefficients are zero.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: June 24, 2014
    Assignee: Fujitsu Limited
    Inventors: Satoshi Shimada, Akira Nakagawa, Hidetoshi Matsumura, Yasuhiro Watanabe, Akihiro Yamori
  • Gas shower plate for plasma processing apparatus
    Patent number: 8757090
    Abstract: In a plasma processing apparatus for generating a plasma in a plasma generation space between a lower electrode and an upper electrode so that a processing object mounted on the lower electrode is subjected to plasma processing, a plurality of cutout portions for absorption of strain caused by thermal expansion due to rapid temperature increases in the plasma processing are formed at an equal pitch in an outer edge portion of a gas shower plate included in the upper electrode. Thus, the gas shower plate can be prevented from being damaged by occurrence of cracks in the outer edge portion of the gas shower plate or the like.
    Type: Grant
    Filed: April 4, 2006
    Date of Patent: June 24, 2014
    Assignee: Panasonic Corporation
    Inventors: Kiyoshi Arita, Akira Nakagawa, Koji Kuga, Taiji Matano, Nobuhiro Sato