Patents by Inventor Yukinobu Yasugi

Yukinobu Yasugi 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).

  • Image decoding device and image decoding method
    Patent number: 10136151
    Abstract: An image decoding device is equipped with a header information decoding means for decoding profile/level information included in a video parameter set after decoding byte-aligned 16-bit extension information (next_essential_info_byte_offset) in the video parameter set.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: November 20, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takeshi Tsukuba, Tomoyuki Yamamoto, Tomohiro Ikai, Yukinobu Yasugi, Sachin G. Deshpande
  • Arithmetic decoding device, image decoding device, and arithmetic coding device
    Patent number: 10129548
    Abstract: To reduce the amount of processing related to coding and decoding of transform coefficients, a sub-block coefficient presence/absence flag indicating whether or not at least one non-zero transform coefficient is included is decoded for each of two or more sub-blocks obtained by dividing a unit region, and a context index of a target sub-block is derived on the basis of transform coefficient presence/absence flags each indicating whether or not a transform coefficient is 0. In accordance with the sub-block coefficient presence/absence flags of adjacent sub-blocks that are adjacent to the target sub-block, the context index of the target sub-block is derived.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: November 13, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takeshi Tsukuba, Tomohiro Ikai, Tomoyuki Yamamoto, Yukinobu Yasugi
  • Image decoding device
    Patent number: 10116966
    Abstract: A hierarchical moving image decoding device (1) includes a profile information decoding unit (1221a) that decodes/configures sublayer profile information after decoding a sublayer profile present flag regarding respective sublayers, and a level information decoding unit (1221b) that decodes/configures sublayer level information.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: October 30, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takeshi Tsukuba, Tomoyuki Yamamoto, Tomohiro Ikai, Yukinobu Yasugi
  • Image decoding device, image decoding method, and image encoding device
    Patent number: 10110891
    Abstract: To achieve a reduction in the amount of coding taken in the use of an asymmetric partition and to implement efficient encoding/decoding processes exploiting the characteristics of the asymmetric partition. In a case that a CU information decoding unit decodes information for specifying an asymmetric partition (AMP; Asymmetric Motion Partition) as a partition type, an arithmetic decoding unit is configured to decode binary values by switching between arithmetic decoding that uses contexts and arithmetic decoding that does not use contexts in accordance with the position of the binary values.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: October 23, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tomoyuki Yamamoto, Tomohiro Ikai, Yukinobu Yasugi
  • OFFSET DECODING DEVICE, OFFSET CODING DEVICE, IMAGE FILTERING DEVICE
    Publication number: 20180288414
    Abstract: An adaptive offset filter (60) adds an offset to the pixel value of each pixel forming an input image. The adaptive offset filter (60) refers to offset-type specifying information, sets offset attributes for a subject unit area of the input image, decodes an offset having a bit width corresponding to an offset value range included in the set offset attributes, and adds the offset to the pixel value of each pixel forming the input image.
    Type: Application
    Filed: June 4, 2018
    Publication date: October 4, 2018
    Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
    Inventors: Takanori Yamazaki, Tomohiro Ikai, Tomoyuki Yamamoto, Yukinobu Yasugi
  • Image decoding device, image decoding method, and image encoding device
    Patent number: 10075733
    Abstract: To achieve a reduction in the amount of coding taken in the use of an asymmetric partition and to implement efficient encoding/decoding processes exploiting the characteristics of the asymmetric partition. An image decoding device includes a motion compensation parameter derivation unit configured to derive a motion compensation parameter indicating either a uni-prediction scheme or a bi-prediction scheme. In a case that a prediction unit has a size less than or equal to a predetermined value, the motion compensation parameter derivation unit is configured to derive the motion compensation parameter by switching between the prediction schemes.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: September 11, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tomoyuki Yamamoto, Tomohiro Ikai, Yukinobu Yasugi
  • DECODING DEVICE, ENCODING DEVICE, DECODING METHOD, ENCODING METHOD, AND NON-TRANSITORY COMPUTER READABLE RECORDING MEDIUM
    Publication number: 20180234684
    Abstract: A coding device and a decoding device are configured to include an estimated prediction mode deciding section (122a) including: a reference block selecting section (1223a) for selecting a reference block for use in estimating an intra-prediction mode for a subject block; an estimating number deciding section (1222a) for deciding an estimating number of estimated values to be estimated for the intra-prediction mode; and an estimated prediction mode deriving section (1221a) for estimating, based on a reference block, the estimating number of estimated values of the prediction mode.
    Type: Application
    Filed: January 29, 2018
    Publication date: August 16, 2018
    Applicant: Sharp Kabushiki Kaisha
    Inventor: Yukinobu YASUGI
  • ARITHMETIC ENCODING DEVICE, ARITHMETIC DECODING DEVICE, ARITHMETIC ENCODING METHOD, AND ARITHMETIC DECODING METHOD
    Publication number: 20180160144
    Abstract: The amount of processing is reduced with high coding efficiency maintained. There is provided an arithmetic decoding device including syntax decoding means for decoding each of at least a first syntax element and a second syntax element indicating a transform coefficient using arithmetic decoding with a context or arithmetic decoding without a context. The syntax decoding means performs decoding that at least includes not decoding the first syntax element and decoding the second syntax element using the arithmetic decoding without a context, and decoding the first syntax element using the arithmetic decoding with a context and decoding the second syntax element using the arithmetic decoding without a context.
    Type: Application
    Filed: February 1, 2018
    Publication date: June 7, 2018
    Inventors: Tomohiro IKAI, Yukinobu YASUGI, Tomoyuki YAMAMOTO, Takeshi TSUKUBA
  • IMAGE DECODING DEVICE AND IMAGE DECODING METHOD
    Publication number: 20180139465
    Abstract: An image decoding device is equipped with a header information decoding means for decoding profile/level information included in a video parameter set after decoding byte-aligned 16-bit extension information (next_essential_info_byte_offset) in the video parameter set.
    Type: Application
    Filed: December 28, 2017
    Publication date: May 17, 2018
    Inventors: Takeshi TSUKUBA, Tomoyuki YAMAMOTO, Tomohiro IKAI, Yukinobu YASUGI, Sachin G. DESHPANDE
  • IMAGE DECODING DEVICE AND IMAGE CODING DEVICE
    Publication number: 20180115780
    Abstract: A hierarchical moving image decoding device (1) includes an inter-layer reference image list setting section (155) that derives an inter-layer reference image list and an inter-layer reference image set used in pictures on a specific target layer based on a parameter set of a target layer.
    Type: Application
    Filed: November 30, 2017
    Publication date: April 26, 2018
    Inventors: Tomoyuki YAMAMOTO, Tomohiro IKAI, Takeshi TSUKUBA, Yukinobu YASUGI
  • OFFSET DECODING DEVICE, OFFSET CODING DEVICE, IMAGE FILTERING DEVICE
    Publication number: 20180098067
    Abstract: An adaptive offset filter (60) adds an offset to the pixel value of each pixel forming an input image. The adaptive offset filter (60) refers to offset-type specifying information, sets offset attributes for a subject unit area of the input image, decodes an offset having a bit width corresponding to an offset value range included in the set offset attributes, and adds the offset to the pixel value of each pixel forming the input image.
    Type: Application
    Filed: November 22, 2017
    Publication date: April 5, 2018
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Takanori YAMAZAKI, Tomohiro Ikai, Tomoyuki YAMAMOTO, Yukinobu YASUGI
  • Decoding device, encoding device, method for decoding, method for encoding, and computer-readable recoding medium storing a program
    Patent number: 9924173
    Abstract: A coding device and a decoding device are configured to include an estimated prediction mode deciding section (122a) including: a reference block selecting section (1223a) for selecting a reference block for use in estimating an intra-prediction mode for a subject block; an estimating number deciding section (1222a) for deciding an estimating number of estimated values to be estimated for the intra-prediction mode; and an estimated prediction mode deriving section (1221a) for estimating, based on a reference block, the estimating number of estimated values of the prediction mode.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: March 20, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Yukinobu Yasugi
  • Image decoding device and image coding device
    Patent number: 9912959
    Abstract: A hierarchical moving image decoding device (1) includes an inter-layer reference image list setting section (155) that derives an inter-layer reference image list and an inter-layer reference image set used in pictures on a specific target layer based on a parameter set of a target layer.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: March 6, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tomoyuki Yamamoto, Tomohiro Ikai, Takeshi Tsukuba, Yukinobu Yasugi
  • Image Decoding Device and Image Coding Device
    Publication number: 20180063541
    Abstract: A reference picture information decoding unit (13) omits decoding of a reference list sorting presence or absence flag and/or a reference list sorting order based on the number of current picture referable pictures.
    Type: Application
    Filed: October 20, 2017
    Publication date: March 1, 2018
    Inventors: Tomoyuki Yamamoto, Tomohiro Ikai, Yukinobu Yasugi, Takeshi Tsukuba
  • Image decoding device
    Patent number: 9894373
    Abstract: An image decoding device is equipped with a header information decoding means for decoding profile/level information included in a video parameter set after decoding byte-aligned 16-bit extension information (next_essential_info_byte_offset) in the video parameter set.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: February 13, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takeshi Tsukuba, Tomoyuki Yamamoto, Tomohiro Ikai, Yukinobu Yasugi, Sachin G. Deshpande
  • Offset decoding device, offset coding device, image filtering device
    Patent number: 9866833
    Abstract: An adaptive offset filter (60) adds an offset to the pixel value of each pixel forming an input image. The adaptive offset filter (60) refers to offset-type specifying information, sets offset attributes for a subject unit area of the input image, decodes an offset having a bit width corresponding to an offset value range included in the set offset attributes, and adds the offset to the pixel value of each pixel forming the input image.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: January 9, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Takanori Yamazaki, Tomohiro Ikai, Tomoyuki Yamamoto, Yukinobu Yasugi
  • Image decoding device and image coding device
    Patent number: 9866856
    Abstract: A reference picture information decoding unit (13) omits decoding of a reference list sorting presence or absence flag and/or a reference list sorting order based on the number of current picture referable pictures.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: January 9, 2018
    Assignee: Dolby International AB
    Inventors: Tomoyuki Yamamoto, Tomohiro Ikai, Yukinobu Yasugi, Takeshi Tsukuba
  • METHOD FOR DECODING AN IMAGE, IMAGE DECODING APPARATUS, METHOD FOR ENCODING AN IMAGE, AND IMAGE ENCODING APPARATUS
    Publication number: 20170310991
    Abstract: To achieve a reduction in the amount of coding taken in the use of an asymmetric partition and to implement efficient encoding/decoding processes exploiting the characteristics of the asymmetric partition. An image decoding device includes a motion compensation parameter derivation unit configured to derive a motion compensation parameter indicating either a uni-prediction scheme or a bi-prediction scheme. In a case that a prediction unit has a size less than or equal to a predetermined value, the motion compensation parameter derivation unit is configured to derive the motion compensation parameter by switching between the prediction schemes.
    Type: Application
    Filed: July 6, 2017
    Publication date: October 26, 2017
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tomoyuki YAMAMOTO, Tomohiro IKAI, Yukinobu YASUGI
  • Image decoding apparatus, image decoding method, image coding apparatus, and image coding method
    Patent number: 9794584
    Abstract: In a case that a pixel shape in a luma domain is not similar to a pixel shape in a chroma domain in an input image, a prediction image that is generated in the reuse of a luma prediction mode is made more accurate. A moving image decoding apparatus 1 includes a gradient deriving unit 1453B that references a chroma gradient definition DEFANG1C, and derives a chroma prediction direction from a prediction mode based on a luma prediction direction.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: October 17, 2017
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yukinobu Yasugi, Tomoyuki Yamamoto, Tomohiro Ikai, Takeshi Tsukuba
  • IMAGE ENCODING DEVICE AND IMAGE ENCODING METHOD
    Publication number: 20170251216
    Abstract: Included is an inter-layer merge candidate derivation unit 1464B that derives motion information decoded in an area on a reference layer corresponding to an area which is located at a lower right part of a target PU and for which decoding has not been performed, in the target PU of a target layer, as a merge candidate.
    Type: Application
    Filed: May 15, 2017
    Publication date: August 31, 2017
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Tomoyuki YAMAMOTO, Tomohiro IKAI, Yukinobu YASUGI