Patents by Inventor Takeshi Tsukuba

Takeshi Tsukuba 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: 10708609
    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: December 17, 2018
    Date of Patent: July 7, 2020
    Assignee: Dolby International AB
    Inventors: Tomoyuki Yamamoto, Tomohiro Ikai, Yukinobu Yasugi, Takeshi Tsukuba
  • Patent number: 10666978
    Abstract: A layer incapable of being decoded on a bit stream which is generated through a bit stream extraction process from a bit stream including a prescribed layer set and which only includes a layer set made up of a subset of the prescribed layer set, occurs. An aspect of the present disclosure specifies a bit stream constraint pertaining to a parameter set, and a bit stream extraction process.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: May 26, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Takeshi Tsukuba, Tomoyuki Yamamoto, Tomohiro Ikai
  • Publication number: 20200154140
    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: December 6, 2019
    Publication date: May 14, 2020
    Inventors: Tomohiro IKAI, Yukinobu YASUGI, Tomoyuki YAMAMOTO, Takeshi TSUKUBA
  • Publication number: 20200112746
    Abstract: There is provided an image processing apparatus and method that make it possible to suppress degradation of the encoding efficiency. In the case where primary transform that is a transform process for a prediction residual that is a difference between an image and a prediction image of the image is to be skipped, also secondary transform, which is a transform process for a primary transform coefficient obtained by the primary transform of the prediction residual, is skipped. The present disclosure can be applied, for example, to an image processing apparatus, an image encoding apparatus, an image decoding apparatus and so forth.
    Type: Application
    Filed: December 5, 2019
    Publication date: April 9, 2020
    Applicant: SONY CORPORATION
    Inventor: Takeshi TSUKUBA
  • Publication number: 20200112747
    Abstract: There is provided an image processing apparatus and method that make it possible to suppress degradation of the encoding efficiency. In the case where primary transform that is a transform process for a prediction residual that is a difference between an image and a prediction image of the image is to be skipped, also secondary transform, which is a transform process for a primary transform coefficient obtained by the primary transform of the prediction residual, is skipped. The present disclosure can be applied, for example, to an image processing apparatus, an image encoding apparatus, an image decoding apparatus and so forth.
    Type: Application
    Filed: December 5, 2019
    Publication date: April 9, 2020
    Applicant: SONY CORPORATION
    Inventor: Takeshi TSUKUBA
  • Patent number: 10595046
    Abstract: There is provided an image processing apparatus and method that make it possible to suppress degradation of the encoding efficiency. In the case where primary transform that is a transform process for a prediction residual that is a difference between an image and a prediction image of the image is to be skipped, also secondary transform, which is a transform process for a primary transform coefficient obtained by the primary transform of the prediction residual, is skipped. The present disclosure can be applied, for example, to an image processing apparatus, an image encoding apparatus, an image decoding apparatus and so forth.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: March 17, 2020
    Assignee: SONY CORPORATION
    Inventor: Takeshi Tsukuba
  • Publication number: 20200045317
    Abstract: There is provided a terminal device capable of efficiently performing communication in a communication system in which a base station device and the terminal device communicate with each other. The terminal device that communicates with the base station device by using a plurality of aggregated cells recognizes that a serving cell is stopped in a first state, recognizes that the serving cell is started in a second state, and switches from the first state to the second state based on a received PDCCH.
    Type: Application
    Filed: October 8, 2019
    Publication date: February 6, 2020
    Inventors: Tomohiro IKAI, Takeshi TSUKUBA
  • Patent number: 10547870
    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: Grant
    Filed: October 16, 2018
    Date of Patent: January 28, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tomohiro Ikai, Yukinobu Yasugi, Tomoyuki Yamamoto, Takeshi Tsukuba
  • Publication number: 20200020134
    Abstract: The present disclosure relates to image processing apparatus and method that can suppress a reduction of subjective image quality. A process related to hiding of predetermined data with respect to data regarding an image is executed, and hiding is skipped in a case where data in a spatial domain of the image is to be encoded. The data regarding the image for which the hiding is performed or the data regarding the image for which the hiding is skipped is encoded. The present disclosure can be applied to, for example, an image processing apparatus, an image encoding apparatus, an image decoding apparatus, and the like.
    Type: Application
    Filed: March 9, 2018
    Publication date: January 16, 2020
    Applicant: SONY CORPORATION
    Inventor: Takeshi TSUKUBA
  • Patent number: 10491900
    Abstract: There is provided a terminal device capable of efficiently performing communication in a communication system in which a base station device and the terminal device communicate with each other. The terminal device that communicates with the base station device by using a plurality of aggregated cells recognizes that a serving cell is stopped in a first state, recognizes that the serving cell is started in a second state, and switches from the first state to the second state based on a received PDCCH.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: November 26, 2019
    Assignee: Velos Media, LLC
    Inventors: Tomohiro Ikai, Takeshi Tsukuba
  • Publication number: 20190238858
    Abstract: A prediction set determining section selects a prediction set from a prediction set group including a plurality of prediction sets having different combinations of prediction modes corresponding to different prediction directions. Further, a prediction mode determining section selects a prediction mode from the prediction set thus selected. An entropy encoding section encodes the prediction set thus selected, the prediction mode thus selected, and residual data between an input image and a predicted image formed on the basis of the prediction set and the prediction mode. This allows an image encoding device to carry out predictions from more various angles, thereby improving prediction efficiency.
    Type: Application
    Filed: April 5, 2019
    Publication date: August 1, 2019
    Inventors: Takeshi TSUKUBA, Yasuaki TOKUMO
  • Publication number: 20190208203
    Abstract: There is provided an image processing apparatus and method that make it possible to suppress reduction of the encoding efficiency. Encoded data is decoded, and based on a value of a transform skip identifier obtained by the decoding, execution of an inverse primary vertical transform and execution of an inverse primary horizontal transform are controlled. Further, based on a value of a transform skip identifier, execution of a primary horizontal transform and execution of a primary vertical transform are controlled, and the transform skip identifier is encoded. The present disclosure can be applied, for example, to an image processing apparatus, an image encoding apparatus, an image decoding apparatus or the like.
    Type: Application
    Filed: September 15, 2017
    Publication date: July 4, 2019
    Applicant: Sony Corporation
    Inventor: Takeshi TSUKUBA
  • Publication number: 20190182497
    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: December 17, 2018
    Publication date: June 13, 2019
    Inventors: Tomoyuki Yamamoto, Tomohiro Ikai, Yukinobu Yasugi, Takeshi Tsukuba
  • Patent number: 10306235
    Abstract: Motion-vector deriving processing using inter-view shift prediction according to the related art makes processing for determining a reference position complicated. In a sequence parameter set, it is not possible to independently set an ON/OFF flag of a texture extension tool and an ON/OFF flag of a depth extension tool. Additionally, even in a case in which only one of an intra SDC wedge segmentation flag IntraSdcWedgeFlag and an intra contour segmentation flag IntraContourFlag is 1, depth_intra_mode_flag for selecting one of the wedge segmentation mode and the contour segmentation mode is unnecessarily decoded. A prediction-vector deriving device derives the coordinates of a reference block of an inter-view merge candidate IV from the sum of the top-left coordinates of a target block, half the size of the target block, and a disparity vector of the target block which is converted into the integer precision. In this case, the value of the sum is normalized to a multiple of 8 or a multiple of 16.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: May 28, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tomohiro Ikai, Takeshi Tsukuba
  • Patent number: 10306237
    Abstract: A prediction set determining section selects a prediction set from a prediction set group including a plurality of prediction sets having different combinations of prediction modes corresponding to different prediction directions. Further, a prediction mode determining section selects a prediction mode from the prediction set thus selected. An entropy encoding section encodes the prediction set thus selected, the prediction mode thus selected, and residual data between an input image and a predicted image formed on the basis of the prediction set and the prediction mode. This allows an image encoding device to carry out predictions from more various angles, thereby improving prediction efficiency.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: May 28, 2019
    Assignee: Velos Media, LLC
    Inventors: Takeshi Tsukuba, Yasuaki Tokumo
  • Publication number: 20190104322
    Abstract: There is provided an image processing apparatus and method that make it possible to suppress degradation of the encoding efficiency. In the case where primary transform that is a transform process for a prediction residual that is a difference between an image and a prediction image of the image is to be skipped, also secondary transform, which is a transform process for a primary transform coefficient obtained by the primary transform of the prediction residual, is skipped. The present disclosure can be applied, for example, to an image processing apparatus, an image encoding apparatus, an image decoding apparatus and so forth.
    Type: Application
    Filed: March 23, 2017
    Publication date: April 4, 2019
    Applicant: SONY CORPORATION
    Inventor: Takeshi TSUKUBA
  • Publication number: 20190098338
    Abstract: In DBBP, there is a problem because of a large processing amount of a synthesis process in which two complement images are synthesized according to segmentation and a filtering process is executed. A predicted image generation device includes a segmentation derivation section that derives segmentation information from an image; and an image synthesis section that generates a predicted image. The image synthesis section executes a filtering process based on a partition mode and the segmentation information.
    Type: Application
    Filed: November 30, 2018
    Publication date: March 28, 2019
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tomohiro IKAI, Takeshi TSUKUBA
  • Patent number: 10244256
    Abstract: In generation of a wedgelet pattern, all the patterns are generated through a line segment drawing process and a region filling process. Therefore, there is a problem that a processing amount is large. A moving image decoding device (1) includes: a wedgelet pattern generation section (145T4) that generates a wedge pattern; a rotation pattern generation section (1465) that derives a rotation pattern by rotating the wedge pattern; a pattern storage section (1464) that adds the rotation pattern to a wedge pattern table; and a DC prediction value derivation section (145T3) that derives a prediction value of each region partitioned in the wedge pattern included in the wedge pattern table (145T5).
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: March 26, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tomohiro Ikai, Takeshi Tsukuba
  • Patent number: 10237564
    Abstract: The processing amount and coding amount related to decoding/coding of profile information and level information are reduced. The profile/level information decoded by a PTL (profile/level) information decoder (1021) is specified by the semantics of an i-th reference PTL information specifying index at a relative position between i-th profile/level information and referenced profile/level information.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: March 19, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takeshi Tsukuba, Tomohiro Ikai, Tomoyuki Yamamoto
  • Publication number: 20190082188
    Abstract: The processing amount and coding amount related to decoding/coding of profile information and level information are reduced. The profile/level information decoded by a PTL (profile/level) information decoder (1021) is specified by the semantics of an i-th reference PTL information specifying index at a relative position between i-th profile/level information and referenced profile/level information.
    Type: Application
    Filed: July 24, 2018
    Publication date: March 14, 2019
    Inventors: Takeshi TSUKUBA, Tomohiro IKAI, Tomoyuki YAMAMOTO