Patents by Inventor Takeshi Kumakura

Takeshi Kumakura 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: 20180130166
    Abstract: A plurality of video images indicated by a plurality of video data each having different color gamuts are displayed on one screen in colors each close to the colors of original video images. A color gamut specifying unit (34) specifies a color gamut to which each of the plurality of video data conforms. A video processing circuit (14) converts the plurality of video data into display data including the plurality of video images to be displayed on one screen of a display unit (15), and also performs conversion into the display data conforming to a color gamut of the display unit (15) on the basis of the color gamut specified by the color gamut specifying unit (34).
    Type: Application
    Filed: May 11, 2016
    Publication date: May 10, 2018
    Inventor: TAKESHI KUMAKURA
  • Patent number: 9322372
    Abstract: A fuel injection valve includes a cylinder internal pressure sensor disposed in the vicinity of a distal end thereof. The cylinder internal pressure sensor detects a cylinder internal pressure in a cylinder and outputs a first sensor signal Ss1 responsive to the detected cylinder internal pressure. Further, a signal processor, which carries out predetermined signal processing with respect to the first sensor signal Ss1 to thereby convert the first sensor signal Ss1 into a second sensor signal Ss2, is disposed between the cylinder internal pressure sensor and a solenoid unit, which is disposed on a proximal end side of the fuel injection valve.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: April 26, 2016
    Assignees: KEIHIN CORPORATION, HONDA MOTOR CO., LTD.
    Inventors: Yoshihiro Kaneko, Gaku Sato, Junichi Fukuda, Mitsuhiro Iwadare, Tetsuji Furukawa, Takeshi Kumakura, Minoru Torii
  • Patent number: 8878990
    Abstract: An image signal processing apparatus, which is capable of receiving, as inputs, images transmitted in first and second formats, includes a determination circuit that determines the first and second formats on the basis of correlation among a plurality of pieces of pixel data input in parallel with one another from the first to n-th channels, and a mapping circuit that sorts the plurality of pieces of pixel data in accordance with the determination result obtained by the determination circuit. According to the aforementioned configuration, an image signal processing apparatus that can handle two formats that divide the original image into n images and transmit the n images on n channels can be realized.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: November 4, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Takeshi Kumakura
  • Publication number: 20140316646
    Abstract: A fuel injection valve includes a cylinder internal pressure sensor disposed in the vicinity of a distal end thereof. The cylinder internal pressure sensor detects a cylinder internal pressure in a cylinder and outputs a first sensor signal Ss1 responsive to the detected cylinder internal pressure. Further, a signal processor, which carries out predetermined signal processing with respect to the first sensor signal Ss1 to thereby convert the first sensor signal Ss1 into a second sensor signal Ss2, is disposed between the cylinder internal pressure sensor and a solenoid unit, which is disposed on a proximal end side of the fuel injection valve.
    Type: Application
    Filed: April 17, 2014
    Publication date: October 23, 2014
    Applicants: Keihin Corporation, Honda Motor Co., Ltd.
    Inventors: Yoshihiro Kaneko, Gaku Sato, Junichi Fukuda, Mitsuhiro Iwadare, Tetsuji Furukawa, Takeshi Kumakura, Minoru Torii
  • Publication number: 20140092302
    Abstract: An image signal processing apparatus, which is capable of receiving, as inputs, images transmitted in first and second formats, includes a determination circuit that determines the first and second formats on the basis of correlation among a plurality of pieces of pixel data input in parallel with one another from the first to n-th channels, and a mapping circuit that sorts the plurality of pieces of pixel data in accordance with the determination result obtained by the determination circuit. According to the aforementioned configuration, an image signal processing apparatus that can handle two formats that divide the original image into n images and transmit the n images on n channels can be realized.
    Type: Application
    Filed: May 22, 2012
    Publication date: April 3, 2014
    Applicant: Sharp Kabushiki Kaisha
    Inventor: Takeshi Kumakura
  • Publication number: 20140092301
    Abstract: The present data structure includes content data indicating content of an original image and identification data indicating whether a transmission format is a first or second format, the first format being a format that divides the original image into n areas (n is an integer greater than or equal to 2) and transmits the n area images on first to n-th channels, and the second format being a format that divides the original image into n images (n is an integer greater than or equal to 2) with definition lower than the original image and transmits the n images on first to n-th channels. Accordingly, realization of an image receiving apparatus that can handle the single scan format and the block scan format is facilitated.
    Type: Application
    Filed: May 22, 2012
    Publication date: April 3, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Takeshi Kumakura
  • Patent number: 8243212
    Abstract: When dividing one frame into a plurality of sub-frames to carry out image display, in a gradation range which is able to be displayed using only sub-frames other than the last sub-frame (for example, luminance ½ or less in the case of two-part division, and luminance ¾ or less in the case of four-part division), the luminance of the last sub-frame is set as the minimum luminance, and luminance display is carried out using the other sub-frames.
    Type: Grant
    Filed: February 15, 2006
    Date of Patent: August 14, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kazunari Tomizawa, Takeshi Kumakura
  • Publication number: 20120194660
    Abstract: An image display device that provides stereo image display with the help of special glasses (i.e. a vision aid) and that allows a viewer looking at the screen without such a vision aid to view a less strange image, and a stereo image display system including such an image display device are provided. The image display device includes: a display module capable of displaying a left eye image (L) to be viewed via a left eye portion of the vision aid and a right eye image (R) to be viewed via a right eye portion of the vision aid, the left eye and right eye images being displayed separately in time and space; and an average brightness controller capable of regulating an average brightness of the left eye image and an average brightness of the right eye image displayed on the display module in one given frame such that these average brightnesses are different from each other.
    Type: Application
    Filed: October 13, 2010
    Publication date: August 2, 2012
    Inventors: Tatsunori Nakamura, Takeshi Kumakura, Makoto Shiomi
  • Publication number: 20090122207
    Abstract: In the first display mode, a first tone converting circuit and a second tone converting circuit of a control LSI divide one frame period of an input image signal into a plurality of sub-frame periods to perform output to a display panel, thus realizing image display performed by time-division driving (pseudo-impulse driving). In the second display mode, the control LSI directly outputs an input image signal to the display panel, thus realizing image display performed by hold driving. In at least one embodiment, switching between the first display mode and the second display mode is performed by changing output of an output data selector according to a mode switching signal. This realizes an image display apparatus which effectively obtains the effect of suppressing blurring of a moving image and alleviates the problem of flickers caused by pseudo-impulse driving.
    Type: Application
    Filed: March 15, 2006
    Publication date: May 14, 2009
    Inventors: Akihiko Inoue, Takeshi Kumakura, Mitsuhiro Shigeta, Tai Shiraishi
  • Patent number: 7500473
    Abstract: A vehicle fuel supply device including a saddle-shaped fuel tank comprised of a main chamber and an auxiliary chamber. A reservoir is disposed within the main chamber. A main pump is provided within the reservoir. A sub-pump is detachably provided within the reservoir. The fuel in the reservoir is drawn up by an operation of the main pump to supply fuel to an engine. A portion of the drawn-up fuel is utilized to generate a negative pressure, the negative pressure is utilized to transfer the fuel in the auxiliary chamber to the reservoir, and the negative pressure is utilized to introduce the fuel in the main chamber into the reservoir.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: March 10, 2009
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuhiro Kobayashi, Takeaki Nakajima, Shoichi Hokazono, Shinya Murabayashi, Hideharu Yamazaki, Kenji Hirose, Takeshi Kumakura, Shukoh Terata
  • Publication number: 20080236550
    Abstract: A vehicle fuel supply device including a saddle-shaped fuel tank comprised of a main chamber and an auxiliary chamber. A reservoir is disposed within the main chamber. A main pump is provided within the reservoir. A sub-pump is detachably provided within the reservoir. The fuel in the reservoir is drawn up by an operation of the main pump to supply fuel to an engine. A portion of the drawn-up fuel is utilized to generate a negative pressure, the negative pressure is utilized to transfer the fuel in the auxiliary chamber to the reservoir, and the negative pressure is utilized to introduce the fuel in the main chamber into the reservoir.
    Type: Application
    Filed: March 26, 2008
    Publication date: October 2, 2008
    Applicant: Honda Motor Co., Ltd.
    Inventors: Kazuhiro Kobayashi, Takeaki Nakajima, Shoichi Hokazono, Shinya Murabayashi, Hideharu Yamazaki, Kenji Hirose, Takeshi Kumakura, Shukoh Terata
  • Publication number: 20080225183
    Abstract: When dividing one frame into a plurality of sub-frames to carry out image display, in a gradation range which is able to be displayed using only sub-frames other than the last sub-frame (for example, luminance ½ or less in the case of two-part division, and luminance ¾ or less in the case of four-part division), the luminance of the last sub-frame is set as the minimum luminance, and luminance display is carried out using the other sub-frames.
    Type: Application
    Filed: February 15, 2006
    Publication date: September 18, 2008
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Kazunari Tomizawa, Takeshi Kumakura
  • Publication number: 20080198117
    Abstract: In the present display device, a control section (15) divides each frame into a preceding subframe and a succeeding subframe and designates the preceding subframe for black display for low luminance and the succeeding subframe for white display for high luminance. That mitigates excess brightness phenomena. The control section (15) adjusts emission of a light source in the display section (14) by PWM light adjustment, setting the light adjustment frequency to n.5 times the frame frequency and not lower than 450 Hz. That prevents horizontal stripes from occurring. The light adjustment frequency is so raised that flickering is less recognizable.
    Type: Application
    Filed: March 7, 2006
    Publication date: August 21, 2008
    Inventor: Takeshi Kumakura
  • Publication number: 20080136752
    Abstract: A control LSI (30) time-divides one frame period of an input image signal into a plurality of sub-frame periods and outputs the signal to a display panel, so as to carry out image display by pseudo impulse driving. At this time, in a first display mode, a first tone converting circuit (34) refers to a first table (37), and a second tone converting circuit (35) refers to a third table (39), to generate an image signal of each sub-frame from the input image signal. In a second display mode, the first tone converting circuit (34) refers to a second table (38), and the second tone converting circuit (35) refers to a fourth table (40), to generate the image signal of the sub-frame from the input image signal. Each of a first selector (41) and a second selector (42) switches the tables to be referred in accordance with a mode switching signal.
    Type: Application
    Filed: March 7, 2006
    Publication date: June 12, 2008
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Akihiko Inoue, Takeshi Kumakura
  • Publication number: 20040179750
    Abstract: A differentiability judgment portion (2) judges differentiability of patterns in an original image, based on human vision characteristics. Based on the results of this judgment, a magnification processing portion (3) selects a magnified image generated by a spatial frequency preserving image magnification portion (30) for patterns in the original image whose differentiability has been judged to be low, and selects a magnified image generated by an edge emphasizing image magnification portion (31) for patterns whose differentiability has been judged to be high, and obtaining a magnified image of the entire original image by combining the selected magnified images. Thus, when magnifying the original image, a magnifying process is performed, in which patterns that are difficult to differentiate and are non-conspicuous with regard to human vision characteristics stay non-conspicuous, whereas patterns that are easy to differentiate and are conspicuous are subjected to a magnification process that emphasizes edges.
    Type: Application
    Filed: October 9, 2003
    Publication date: September 16, 2004
    Inventor: Takeshi Kumakura
  • Patent number: 5545564
    Abstract: This present invention provides a vector for expression and secretion of a polypeptide by directly joining a DNA sequence coding for a signal peptide to a DNA sequence coding for the desired polypeptide, the vector containing the DNA sequence coding for the signal peptide, a vector for expression and secretion of the desired polypeptide as defined above and further having incorporated therein the DNA sequence coding for the desired polypeptide, a microorganism transformed by the secretion vector, and a process for producing the desired polypeptide by growing the microorganism.
    Type: Grant
    Filed: February 24, 1995
    Date of Patent: August 13, 1996
    Assignee: Earth Chemical Company, Ltd.
    Inventors: Hideo Ohgai, Hiroshi Momota, Takeshi Kumakura, Noriyuki Kajifusa, Toshiki Kitazawa, Kazuhide Oshiden, Aizo Matsushiro
  • Patent number: 4791501
    Abstract: A support apparatus for the magnetic heads of a two-sided floppy disk drive has a first magnetic head which is elastically supported on the front portion of a carriage so as to be able to move in the normal direction of a floppy disk, and a second magnetic head which is supported by the front portion of a rotating arm. The rotation of the arm towards the floppy disk is restrained by an arm support. In a first embodiment, the first magnetic head is supported by a first gimbal spring which is secured to the carriage, and the second magnetic head is secured to a steel plate which is secured to the arm. In a second embodiment, the second magnetic head is supported by a second gimbal spring which is secured to the arm which has a greater stiffness than the first gimbal spring.
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: December 13, 1988
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takeshi Kumakura, Toshikazu Hayashi, Kazuo Koike