Patents by Inventor Satoru Tanigawa

Satoru Tanigawa 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: 20200131923
    Abstract: A stator blade of an embodiment includes: a blade effective part having hollow portions; an outer shroud having an outer plate flange portion provided on a radial-direction outer side of the blade effective part, and a pair of outer mounting portions provided in a circumferential direction on a front edge side and a rear edge side; an inner shroud having an inner plate flange portion provided on a radial-direction inner side of the blade effective part; cooling medium introduction passages which introduce a cooling medium via opening portions formed in the outer plate flange portion and passing through the outer plate flange portion in a radial direction, to the hollow portions; and a cooling medium introduction passage formed in a direction along a surface of the outer plate flange portion in a wall thickness of the outer plate flange portion, which introduces a cooling medium to the hollow portion.
    Type: Application
    Filed: October 24, 2019
    Publication date: April 30, 2020
    Applicant: Toshiba Energy Systems & Solutions Corporation
    Inventors: Asako INOMATA, Shinji TANIGAWA, Iwataro SATO, Hideyuki MAEDA, Satoru SEKINE, Kazutaka TSURUTA
  • Patent number: 10632542
    Abstract: A cutting tool according to an aspect of the present disclosure includes a cutting edge portion which contains at least one of cubic boron nitride and polycrystalline diamond. The cutting edge portion includes a flank face, a negative land contiguous to the flank face, and a cutting edge formed by a ridgeline between the flank face and the negative land. At least one of the negative land and the flank face is provided with a plurality of recesses and a projection. The projection is formed by arranging the edges of adjacent recesses in contact with each other.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: April 28, 2020
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Gaku Harada, Yoshinori Tanigawa, Satoru Kukino
  • Patent number: 8774547
    Abstract: A contour correcting device which includes a plurality of delay elements which delay an input video signal, a pixel-selection-control-signal generation circuit, a pixel selection circuit which selects outputs of the plurality of delay elements in response to outputs of the pixel-selection-control-signal generation circuit, a high-pass filter operation circuit and an adder circuit which adds an operation result of the high-pass filter operation circuit to the input video signal. When the pixel selection circuit extracts a contour component in a boundary portion between a horizontal video effective period and a period other than the horizontal video effective period of the input video signal, the pixel selection circuit replaces pixel data in the period other than the horizontal video effective period among pixel data input to the high-pass filter operation circuit, with pixel data at an edge-point of the horizontal video effective period.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: July 8, 2014
    Assignee: Panasonic Corporation
    Inventors: Nobuko Fujita, Satoru Tanigawa
  • Publication number: 20140036148
    Abstract: In order to convert frame repetition information generated by pulldown processing for generating repeat frames from each frame of an input video signal generated at 24 fps into phase information for pulldown processing, and to perform frame rate conversion using the phase information, an apparatus for converting the frame rate of the video signal includes a repeat frame generation unit configured to generate, according to the predetermined number of repeat frames, a plurality of identical frames from each frame of the input video signal; and a frame rate conversion unit configured to perform frame rate conversion based on the frame phase information indicating the number of repeat frames generated by the repeat frame generation unit. Thus, even if a video picture generated at 24 fps is input, judder of a video picture displayed on a screen can be reduced upon frame rate conversion until pulldown processing is determined.
    Type: Application
    Filed: September 24, 2013
    Publication date: February 6, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Satoru TANIGAWA, Yuji SEKIGUCHI
  • Publication number: 20140028909
    Abstract: A method for converting the frame rate of a video signal includes a film footage detection step of detecting a M:N (M and N are integers) pulldown video signal from an input video signal; a frame rate conversion step of performing frame rate conversion for a series of frames of the input video signal; and a switching control step of, if the M:N pulldown video signal is detected based on a detection result obtained at the film footage detection step, switching, at the frame rate conversion step, the frame rate conversion for the series of frames to frame rate conversion for M:N pulldown, and controlling the switching at a frame in which there is no difference between time required for the frame rate conversion for the series of frames and time required for the frame rate conversion for M:N pulldown.
    Type: Application
    Filed: September 30, 2013
    Publication date: January 30, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Satoru TANIGAWA, Yoshihiro KISHIMOTO
  • Publication number: 20120033136
    Abstract: Film-originated video detection is performed on an input video signal in each of regions into which an entire screen is divided. Based on the detection result, a case where there is not film-originated video is separated from a case where film-originated video covers the entire screen. When both a film region and a non-film region are contained, film-originated video detection is performed in sub-regions into which a region which has been determined to be a film region is subdivided. Based on the detection result, it is determined whether or not all the sub-regions are film regions. The determination is repeatedly performed until it is determined that all sub-regions are film regions. If it is determined that all sub-regions are film regions, a film-originated video region is determined, and the process is ended. Thus, a film-originated video region can be accurately detected in a screen containing film-originated video and non-film-originated video.
    Type: Application
    Filed: October 12, 2011
    Publication date: February 9, 2012
    Applicant: Panasonic Corporation
    Inventor: Satoru TANIGAWA
  • Publication number: 20100277647
    Abstract: An image processing method includes a difference extraction step (103) of outputting a frame difference signal from an input image signal and from an image signal that has been frame-delayed so that a base value of noise of the film image is acquired from a portion of the film image of a 2-3 pull-down scheme where a signal that is identical every five fields, an integration step (107) of accumulating output signals of the difference extraction step, a detection step (106) that a difference of the entire frames is small based on the output signal of the difference extraction step, and an acquisition step (108) of acquiring, as a noise amount, an integrated value of the frame in the integrated step at timing when it is detected in the detection step that a difference of the entire frames is small. With this, noise is detected by the image processing method. A noise reduction step (113) is carried out using a result of the detection of noise.
    Type: Application
    Filed: January 29, 2009
    Publication date: November 4, 2010
    Inventor: Satoru Tanigawa
  • Patent number: 7796783
    Abstract: The motion detection device includes an oblique correlation detection section, a motion detection section and a motion determination section. The oblique correlation detection section detects a correlation in an oblique direction (oblique correlation) of a composite video signal. The motion detection section detects a motion amount based on an inter-frame difference of the composite video signal. The motion determination section determines the presence/absence of a motion in the composite video signal based on the motion amount detected by the motion detection section. The motion determination section determines the presence/absence of the motion considering the detection results of the oblique correlation by the oblique correlation detection section.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: September 14, 2010
    Assignee: Panasonic Corporation
    Inventor: Satoru Tanigawa
  • Publication number: 20100104212
    Abstract: A contour correcting device of the present invention includes a plurality of delay elements which delay an input video signal, a pixel-selection-control-signal generation circuit, a pixel selection circuit which selects outputs of the plurality of delay elements in response to outputs of the pixel-selection-control-signal generation circuit, a high-pass filter operation circuit which weights and adds or subtracts pixel data selected by the pixel selection circuit, and an adder circuit which adds an operation result of the high-pass filter operation circuit to the input video signal.
    Type: Application
    Filed: September 11, 2008
    Publication date: April 29, 2010
    Inventors: Nobuko Fujita, Satoru Tanigawa
  • Patent number: 7684649
    Abstract: To improve accuracy of determining the average brightness level and maximum and minimum levels of the brightness signals for the entire screen. There are included a differential operation circuit that detects and differentiates rise or breaking edges in horizontal and vertical synchronous signals of an input image signal, thereby outputting horizontal and vertical differential signals synchronized with the horizontal and vertical synchronous signals, respectively; a sample window circuit that detects the beginning and ending positions of horizontal and vertical intervals to produce sample window signals established in any desired vertical and horizontal positions on the screen in accordance with the horizontal and vertical differential signals; and a brightness signal output circuit that outputs sampled brightness signals when the sample window circuit is operative.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: March 23, 2010
    Assignee: Panasonic Corporation
    Inventors: Hisao Kunitani, Satoru Tanigawa, Takashi Koizumi
  • Patent number: 7683972
    Abstract: A video signal processing apparatus is provided with a first clock generation circuit for generating a first clock synchronized with an input signal; a second clock generation circuit for receiving a set value to be a reference of an output frequency, adding the set value for every reference clock, extracting data according to the cumulative value, converting the data into an analog signal, reducing quantization noise, and multiplying the analog signal, thereby to obtain a second clock; and a clock switch circuit for generating a sync signal that is switched to the second clock, by using a sync signal generated with the first clock; and video signal processing is carried out using the second clock that is generated according to the resolution of a pixel display.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: March 23, 2010
    Assignee: Panasonic Corporation
    Inventor: Satoru Tanigawa
  • Patent number: 7649567
    Abstract: A format conversion apparatus for subjecting data having a predetermined resolution to conversion of the resolution according to a resolution of a display screen, comprises: a timing generation unit for generating a timing for thinning out inputted signal data, using a resolution conversion coefficient that is calculated on the basis of a conversion ratio of the resolution; and a selection unit for selecting, from two pieces of input signal data existing before and after the timing generated by the timing generation unit, the signal data that is timewise closer to the timing; wherein resolution conversions in the horizontal direction and the vertical direction are carried out while maintaining the combination of the inputted signals.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: January 19, 2010
    Assignee: Panasonic Corporation
    Inventor: Satoru Tanigawa
  • Publication number: 20090091659
    Abstract: The motion detection device includes an oblique correlation detection section, a motion detection section and a motion determination section. The oblique correlation detection section detects a correlation in an oblique direction (oblique correlation) of a composite video signal. The motion detection section detects a motion amount based on an inter-frame difference of the composite video signal. The motion determination section determines the presence/absence of a motion in the composite video signal based on the motion amount detected by the motion detection section. The motion determination section determines the presence/absence of the motion considering the detection results of the oblique correlation by the oblique correlation detection section.
    Type: Application
    Filed: November 24, 2008
    Publication date: April 9, 2009
    Applicant: PANASONIC CORPORATION
    Inventor: Satoru TANIGAWA
  • Publication number: 20070216815
    Abstract: [PROBLEMS]To improve accuracy of determining the average brightness level and maximum and minimum levels of the brightness signals for the entire screen. [MEANS FOR SOLVING THE PROBLEMS]There are included a differential operation circuit that detects and differentiates rise or breaking edges in horizontal and vertical synchronous signals of an input image signal, thereby outputting horizontal and vertical differential signals synchronized with the horizontal and vertical synchronous signals, respectively; a sample window circuit that detects the beginning and ending positions of horizontal and vertical intervals to produce sample window signals established in any desired vertical and horizontal positions on the screen in accordance with the horizontal and vertical differential signals; and a brightness signal output circuit that outputs sampled brightness signals when the sample window circuit is operative.
    Type: Application
    Filed: April 20, 2005
    Publication date: September 20, 2007
    Inventors: Hisao Kunitani, Satoru Tanigawa, Takashi Koizumi
  • Patent number: 7259599
    Abstract: In a semiconductor device of the present invention, a clock is not changed instantaneously but it is changed over maximum N+1/M clocks (N: integer not less than 2) by shifting delay cells in a step by step manner to make the phase state of a previous reference signal and the phase state of a present reference signal coincide with each other, whereby the clock is synchronized with the reference signal with accuracy, and the duty of the output clock is kept constant. With this semiconductor device, it is possible to prevent the duty of the clock from being discontinuous when a signal whose reference signal does not coincide with the clock is inputted and reset is made to a rising edge of this reference signal.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: August 21, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hisao Kunitani, Satoru Tanigawa, Hiroshi Sonobe, Atsuhisa Kageyama
  • Patent number: 7250981
    Abstract: A video signal processor and a video signal processing method which can prevent the length of one period of a clock from being shortened and can output a video signal that is in phase with a reference signal. When a video data signal that has been processed using a first clock signal is processed using a second clock signal, this video signal processor does not utilize as the second clock signal, a clock signal that is in phase with a reference signal but a clock signal that is employed in a later stage signal processor, and interpolates the video data signal by an interpolation circuit so as to make the signal in phase with the reference signal.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: July 31, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Satoru Tanigawa
  • Publication number: 20060269129
    Abstract: A gray scale conversion table memory stores data obtained by normalizing a luminance cumulative histogram, and when receiving an input luminance value as an address, outputs gray scale conversion luminance data obtained by gray scale conversion (flattening of a luminance distribution, etc.). A frequency component correction circuit increases a higher frequency component of a luminance portion having a small slope in the normalized cumulative histogram. Thereby, a reduction in sharpness or the like is suppressed in a luminance portion to which a less number of gray scales are assigned.
    Type: Application
    Filed: May 24, 2006
    Publication date: November 30, 2006
    Inventor: Satoru Tanigawa
  • Publication number: 20060187349
    Abstract: A video signal processing apparatus is provided with a first clock generation circuit for generating a first clock synchronized with an input signal; a second clock generation circuit for receiving a set value to be a reference of an output frequency, adding the set value for every reference clock, extracting data according to the cumulative value, converting the data into an analog signal, reducing quantization noise, and multiplying the analog signal, thereby to obtain a second clock; and a clock switch circuit for generating a sync signal that is switched to the second clock, by using a sync signal generated with the first clock; and video signal processing is carried out using the second clock that is generated according to the resolution of a pixel display.
    Type: Application
    Filed: February 21, 2006
    Publication date: August 24, 2006
    Inventor: Satoru Tanigawa
  • Patent number: 7084928
    Abstract: An oblique correlation detection section detects correlation in an oblique direction (oblique correlation) of a composite video signal. A line correlation chrominance separation section extracts a first chrominance signal from the composite video signal based on vertical correlation of the composite video signal. A first chrominance signal acquisition section acquires a second chrominance signal based on horizontal self-correlation of the first chrominance signal. The first chrominance signal acquisition section detects the self-correlation within a range corresponding to the degree of the oblique correlation detected by the oblique detection section.
    Type: Grant
    Filed: September 24, 2003
    Date of Patent: August 1, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Satoru Tanigawa
  • Publication number: 20060146891
    Abstract: In a semiconductor device of the present invention, a clock is not changed instantaneously but it is changed over maximum N+1/M clocks (N: integer not less than 2) by shifting delay cells stepwisely to make the phase state of a previous reference signal and the phase state of a present reference signal coincide with each other, whereby the clock is synchronized with the reference signal with accuracy, and the duty of the output clock is kept constant. According to the semiconductor device of the present invention, it is possible to prevent the duty of the clock from being discontinuous when a signal whose reference signal does not coincide with the clock is inputted and reset is made to a rising edge of this reference signal.
    Type: Application
    Filed: November 19, 2004
    Publication date: July 6, 2006
    Inventors: Hisao Kunitani, Satoru Tanigawa, Hiroshi Sonobe, Atsuhisa Kageyama