Patents by Inventor Shigeki Nagaya

Shigeki Nagaya 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).

  • Patent number: 9816479
    Abstract: A pod of an ocean current power generation device which is serving as an underwater floating-type underwater device is provided with a ballast tank and an air storage tank. When discharging water from the ballast tank, by opening a water discharge valve and driving a water discharge pump, water inside the ballast tank is discharged to the outside through a water conduit. When supplying water, by opening a water supply valve while the water pressure outside the pod is greater than the water pressure inside the ballast tank, water is made to flow from the outside of the pod through an aperture portion, and into the ballast tank via the water conduit.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: November 14, 2017
    Assignee: IHI CORPORATION
    Inventors: Norihisa Handa, Shigeki Nagaya, Yoshiyuki Yamane
  • Patent number: 9726773
    Abstract: A subaqueous underground survey system using a reflection seismic survey method includes: multiple sound sources 1 for generating sound waves in the water; a controller 2 for controlling phases of the sound waves; a geophone 3 for receiving reflected waves of the sound waves; and an observation ship 4 equipped with the sound sources 1, wherein the controller 2 controls phases of the sound sources 1 so that the sound waves generated from the respective sound sources 1 have a phase difference at a water bottom surface B, thereby controlling generation of shear waves to propagate into the ground.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: August 8, 2017
    Assignees: IHI CORPORATION
    Inventors: Hitoshi Mikada, Hiroaki Ozasa, Fumio Sato, Shigeki Nagaya, Akio Yamanishi
  • Publication number: 20160201641
    Abstract: This underwater device is twin-motor underwater floating-type power generation device that is provided with: a device main body that is equipped with a pair of pods that have a turbine, and with a connecting beam that connects these pods together in parallel with each other; a sinker; and tether cables that tether the device main body to the seabed via this sinker. The respective turbines of the pods are each provided with variable pitch turbine blades. This device is also provided with a depth meter that detects deviation in posture in the roll direction that is generated in the pair of pods, and a posture controller that controls the pitch of the variable pitch turbine blades of the respective turbines so as to nullify any deviation in posture in the roll direction that has been generated in the pair of pods and has been detected by the depth meter.
    Type: Application
    Filed: October 6, 2015
    Publication date: July 14, 2016
    Applicant: IHI CORPORATION
    Inventors: Norihisa HANDA, Shigeki NAGAYA, Yoshiyuki YAMANE, Akio ITO
  • Publication number: 20160017859
    Abstract: A pod of an ocean current power generation device which is serving as an underwater floating-type underwater device is provided with a ballast tank and an air storage tank. When discharging water from the ballast tank, by opening a water discharge valve and driving a water discharge pump, water inside the ballast tank is discharged to the outside through a water conduit. When supplying water, by opening a water supply valve while the water pressure outside the pod is greater than the water pressure inside the ballast tank, water is made to flow from the outside of the pod through an aperture portion, and into the ballast tank via the water conduit.
    Type: Application
    Filed: September 30, 2015
    Publication date: January 21, 2016
    Applicant: IHI CORPORATION
    Inventors: Norihisa HANDA, Shigeki NAGAYA, Yoshiyuki YAMANE
  • Publication number: 20150331128
    Abstract: A subaqueous underground survey system using a reflection seismic survey method includes: multiple sound sources 1 for generating sound waves in the water; a controller 2 for controlling phases of the sound waves; a geophone 3 for receiving reflected waves of the sound waves; and an observation ship 4 equipped with the sound sources 1, wherein the controller 2 controls phases of the sound sources 1 so that the sound waves generated from the respective sound sources 1 have a phase difference at a water bottom surface B, thereby controlling generation of shear waves to propagate into the ground.
    Type: Application
    Filed: July 17, 2015
    Publication date: November 19, 2015
    Applicants: IHI CORPORATION
    Inventors: Hitoshi MIKADA, Hiroaki OZASA, Fumio SATO, Shigeki NAGAYA, Akio YAMANISHI
  • Patent number: 8319892
    Abstract: For providing a technology for preferably achieving high resolution of video signals of a video signal or moving video, with a small number of frames thereof, a video signal processing apparatus comprise an input unit to be inputted a plural number of video frames, a resolution converter unit, having resolution converting characteristics differing from each other, depending on a direction thereof, by composing 2 pieces of the video frames from the inputted video frames, thereby increasing a number of pixels making up the video frames, and a mixer unit for obtaining the output video frame by mixing output results of the resolution converter unit.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: November 27, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Kageyama, Koichi Hamada, Shigeki Nagaya
  • Patent number: 8280190
    Abstract: To provide a processing method for reducing motion blur while increasing resolution. By performing a super-resolution process, a resolution-increased image is obtained from an input image in multiple frames. By performing an enlargement process, an enlarged image is obtained from the input image in one frame. A high-frequency image is obtained by subtracting the enlarged image from the resolution-increased image. A high spatial frequency-emphasized image is obtained by adding the high-frequency image to the resolution-increased image. The enlarged image and high spatial frequency-emphasized image are displayed alternately every half frame.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: October 2, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Koji Nagata, Naruhiko Kasai, Yasuyuki Kudo, Junichi Maruyama, Masahiro Kageyama, Shigeki Nagaya
  • Patent number: 8224123
    Abstract: A technique is provided for reducing the size of each of images included in an image signal and generating a high-resolution image with minimized degradation in the image quality from the reduced images. Alias components and motion information that are included in the image signal having the reduced images are used for conversion of the images included in the image signal into a high-resolution image. Low pass filtering is performed on a frequency component in the direction of a motion included in the image signal and a frequency component in a direction other than the direction of the motion. The cut-off frequency of the low pass filter in the direction other than the direction of the motion is lower than the cut-off frequency of the low pass filter in the direction of the motion.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: July 17, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Koichi Hamada, Masahiro Kageyama, Shigeki Nagaya
  • Patent number: 8064735
    Abstract: An image data recording and reproducing system comprises an image data input unit, an ID generator generating an ID inserted to image data from the image data input unit, a plurality of image data recorders for recording the image data, and an output unit for outputting the image data recorded into the plurality of image data recorders, wherein each of the plurality of image data recorders has an ID table and an image data storage area, and an ID of the ID table is matched with image data of the image data storage area on the bases of recording position information of the image data.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: November 22, 2011
    Assignee: Hitachi Kokusai Electric Co., Ltd.
    Inventors: Shigeki Nagaya, Seiichi Hirai, Hirotada Ueda
  • Patent number: 7862172
    Abstract: A face horizontal direction measuring unit measures the angle of the face horizontal direction for a face image obtained by an imaging unit. By using information on the radius of the head and information on the shoulder position of the person obtained by the aforementioned measurement, a face vertical displacement measuring unit measures a face displacement in the vertical direction not affected by a head posture. According to the obtained displacement, the face angle in the vertical direction is decided. By using the obtained face direction, the angle of the gaze in the horizontal direction and the eyeball radius are measured. Further, a gaze vertical displacement measuring unit is provided for which measuring the pupil center position against the eyeball center position as the gaze displacement in the vertical direction. This displacement amount is used to measure the gaze angle in the vertical direction.
    Type: Grant
    Filed: August 25, 2008
    Date of Patent: January 4, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Tomoaki Yoshinaga, Shigeki Nagaya, Chiharu Sayama
  • Publication number: 20100295839
    Abstract: Disclosed is an image display device that provides power consumption reduction control in an improved manner. The image display device includes an input that inputs a video signal, an output controller that reproduces the video signal entered into the input, a display that displays an image in accordance with the video signal reproduced by the output controller, an imager that picks up an image of a user of the image display device, an attentiveness decider that analyzes the image picked up by the imager and judges whether the user is watching a display screen of the display, and a controller that selects either a normal mode or a power saving mode as a processing mode for light intensity control of a light source of the display or for reproduction in the output controller in accordance with the result of decision made by the attentiveness decider.
    Type: Application
    Filed: May 18, 2010
    Publication date: November 25, 2010
    Applicant: Hitachi Consumer Electronics Co., Ltd.
    Inventors: Shigeki Nagaya, Tomoaki Yoshinaga, Takehiro Fujita, Hiroaki Ito, Katsuyuki Watanabe, Hidekazu Takeda, Maki Furui
  • Patent number: 7834912
    Abstract: An attention level measuring apparatus, including: an eye direction measurement unit, which is configured to input image data and to measure an eye direction of a person photographed; an attention position information calculate unit, which is configured to calculate attention position information of a person, from the eye direction measured by an eye direction measurement unit; a person-attention-level calculate unit, which is configured to calculate person-attention-level information regarding a person-attention-level parameter about an attention target of a person, with using the attention position information calculated by the attention position information calculate unit; and an output control unit, which is configured to display graphic information produced upon basis of the calculated attention level information and a picture of the attention target, putting one upon the other.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: November 16, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Tomoaki Yoshinaga, Shigeki Nagaya, Youichi Horii
  • Patent number: 7835543
    Abstract: An object detection method which rapidly detects one or more objects existing in an image includes: a primary search step which judges whether an object exists at a predetermined interval by using a simple judgment device requiring a small number of calculation amounts; a range estimation step which estimates a range where an object actually exists from a spatial relationship obtained as a result of the primary search; a secondary search step which performs an object judgment process by using a secondary judgment device capable of performing more detailed judgment than the object judgment device used in the primary search; an object position estimation step which estimates a position where the similarity is maximum in a certain object existing range as an object existing position; and a final search step which judges a final object position.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: November 16, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Tomoaki Yoshinaga, Shigeki Nagaya, Isao Karube
  • Patent number: 7830369
    Abstract: A video signal processing apparatus, for achieving high resolution of a video signal, in particular, the video signal of moving pictures, preferably, comprises a motion estimation portion (101) for estimating a sampling phase difference with using video data on an input video frame as a reference and each video data on other input video frame, a motion compensation/up-rate portion (115) for compensating motion of the video data of the each input video frame with using information of said sampling phase difference, as well as, to increase the number of pixels to n times, a phase shift portion (116) for shifting the video data of each of the video frames, the pixel number of which is increased, by a predetermined amount, a coefficient determining portion, which is configured to determine a coefficient with using information of said sampling phase difference; and an aliasing component removal portion (117) for removing (n?1) pieces of aliasing components, by adding each of video data in front and back of said ph
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: November 9, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Kageyama, Koichi Hamada, Shigeki Nagaya
  • Publication number: 20100027890
    Abstract: An eye-gaze direction calculation unit calculates the eye-gaze direction in an input facial image of a person by carrying out prescribed operation processing based on iris shape data output from an iris detection unit and face-direction measurement data output from a face-direction measurement unit. The eye-gaze direction of the facial image of the person can be measured on the basis of accurate iris shape information obtained by an iris shape detection unit. The iris and sclera regions can be estimated on the basis of the detected eyelid contour information, thereby making it possible to accurately estimate the shape of the iris.
    Type: Application
    Filed: June 10, 2009
    Publication date: February 4, 2010
    Inventors: Tomoaki YOSHINAGA, Shigeki Nagaya, Chiharu Sayama, Hideyuki Hidaka, Hiroyuki Shimokawa, Hiroshi Watanabe
  • Publication number: 20090109400
    Abstract: A face horizontal direction measuring unit measures the angle of the face horizontal direction for a face image obtained by an imaging unit. By using information on the radius of the head and information on the shoulder position of the person obtained by the aforementioned measurement, a face vertical displacement measuring unit measures a face displacement in the vertical direction not affected by a head posture. According to the obtained displacement, the face angle in the vertical direction is decided. By using the obtained face direction, the angle of the gaze in the horizontal direction and the eyeball radius are measured. Further, a gaze vertical displacement measuring unit is provided for which measuring the pupil center position against the eyeball center position as the gaze displacement in the vertical direction. This displacement amount is used to measure the gaze angle in the vertical direction.
    Type: Application
    Filed: August 25, 2008
    Publication date: April 30, 2009
    Inventors: Tomoaki Yoshinaga, Shigeki Nagaya, Chiharu Sayama
  • Publication number: 20090080804
    Abstract: A technique is provided for reducing the size of each of images included in an image signal and generating a high-resolution image with minimized degradation in the image quality from the reduced images. Alias components and motion information that are included in the image signal having the reduced images are used for conversion of the images included in the image signal into a high-resolution image. Low pass filtering is performed on a frequency component in the direction of a motion included in the image signal and a frequency component in a direction other than the direction of the motion. The cut-off frequency of the low pass filter in the direction other than the direction of the motion is lower than the cut-off frequency of the low pass filter in the direction of the motion.
    Type: Application
    Filed: August 28, 2008
    Publication date: March 26, 2009
    Inventors: Koichi HAMADA, Masahiro KAGEYAMA, Shigeki NAGAYA
  • Publication number: 20090060365
    Abstract: To provide a processing method for reducing motion blur while increasing resolution. By performing a super-resolution process, a resolution-increased image is obtained from an input image in multiple frames. By performing an enlargement process, an enlarged image is obtained from the input image in one frame. A high-frequency image is obtained by subtracting the enlarged image from the resolution-increased image. A high spatial frequency-emphasized image is obtained by adding the high-frequency image to the resolution-increased image. The enlarged image and high spatial frequency-emphasized image are displayed alternately every half frame.
    Type: Application
    Filed: July 28, 2008
    Publication date: March 5, 2009
    Inventors: Koji NAGATA, Naruhiko KASAI, Yasuyuki KUDO, Junichi MARUYAMA, Masahiro KAGEYAMA, Shigeki NAGAYA
  • Publication number: 20090009660
    Abstract: The present invention provides a technology for achieving high resolution of video signals, preferably, with a small number of frames of a video signal or a motion picture. The video signal processing apparatus comprises an input unit, into which a plural number of video frames, and a resolution converter unit, having characteristics for resolution conversion differing depending on the direction, in which an object to be photographed moves on that input video frame, by composing the plural number of video frames inputted, and for obtaining an output video frame by increasing a number of pixels building up the video frame, whereby obtaining high-resolution video with using an output result of that resolution converter unit.
    Type: Application
    Filed: July 3, 2008
    Publication date: January 8, 2009
    Inventors: Masahiro KAGEYAMA, Koichi Hamada, Shigeki Nagaya, Takehiro Fujita
  • Patent number: 7447332
    Abstract: It is desirable to distribute a most recently inputted image of merchandise in a shop without showing customers visiting a shop, or to distribute an image showing how crowded a shop is without infringing on the privacy of visitors to the ship. This is achieved by separating areas showing moving objects and areas showing no moving objects of an image and synthesizing an image showing stationary objects only by replacing the moving object area with the corresponding area of an earlier inputted image showing stationary objects only, or by processing the moving object area of an image, for example, by applying a mosaic to such an area, and synthesizing the synthesized image showing stationary objects only. The image in which the moving object area has been processed enables the distribution of an image showing how crowded a shop is without infringing on the privacy of visitors.
    Type: Grant
    Filed: January 19, 2005
    Date of Patent: November 4, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Youichi Horii, Junichi Kimura, Shigeki Nagaya