Patents by Inventor Takahiro Nishi

Takahiro Nishi 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: 20190253715
    Abstract: A moving picture coding apparatus includes an intra-inter prediction unit which calculates a second motion vector by performing a scaling process on a first motion vector of a temporally neighboring corresponding block, when selectively adding, to a list, a motion vector of each of one or more corresponding blocks each of which is either a block included in a current picture to be coded and spatially neighboring a current block to be coded or a block included in a picture other than the current picture and temporally neighboring the current block, determines whether the second motion vector has a magnitude that is within a predetermined magnitude or not within the predetermined magnitude, and adds the second motion vector to the list when the intra-inter prediction unit determines that the second motion vector has a magnitude that is within the predetermined magnitude range.
    Type: Application
    Filed: April 23, 2019
    Publication date: August 15, 2019
    Inventors: Toshiyasu Sugio, Takahiro Nishi, Youji Shibahara, Kyoko Tanikawa, Hisao Sasai, Toru Matsunobu, Kengo Terada
  • Publication number: 20190251743
    Abstract: A display method is a display method performed by a display device that operates in conjunction with a mobile object, and includes: determining which one of first surrounding information, which is video showing a surrounding condition of the mobile object and is generated using two-dimensional information, and second surrounding information, which is video showing the surrounding condition of the mobile object and is generated using three-dimensional data, is to be displayed, based on a driving condition of the mobile object; and displaying the one of the first surrounding information and the second surrounding information that is determined to be displayed.
    Type: Application
    Filed: April 23, 2019
    Publication date: August 15, 2019
    Inventors: Tatsuya KOYAMA, Takahiro NISHI, Toshiyasu SUGIO, Tadamasa TOMA, Satoshi YOSHIKAWA, Toru MATSUNOBU
  • Patent number: 10383194
    Abstract: A data generation method is for generating video data that covers a second luminance dynamic range wider than a first luminance dynamic range and has reproduction compatibility with a first device that does not support reproduction of video having the second luminance dynamic range and supports reproduction of video having the first luminance dynamic range, and includes: generating a video signal to be included in the video data using a second OETF; storing, into VUI in the video data, first transfer function information for identifying a first OETF to be referred to by the first device when the first device decodes the video data; and storing, into SEI in the video data, second transfer function information for identifying a second OETF to be referred to by a second device supporting reproduction of video having the second luminance dynamic range when the second device decodes the video data.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: August 13, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Virginie Drugeon, Takahiro Nishi, Tadamasa Toma
  • Patent number: 10382779
    Abstract: An image coding method includes coding a motion vector difference indicating a difference between the motion vector and a predicted motion vector, wherein the coding includes: coding a first portion that is a part of a first component which is one of a horizontal component and a vertical component of the motion vector difference; coding a second portion that is a part of a second component which is different from the first component and is the other one of the horizontal component and the vertical component; coding a third portion that is a part of the first component and is different from the first portion; coding a fourth portion that is a part of the second component and is different from the second portion; and generating a code string which includes the first portion, the second portion, the third portion, and the fourth portion in the stated order.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: August 13, 2019
    Assignee: Velos Media, LLC
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu
  • Patent number: 10382760
    Abstract: The image coding method includes: determining a context in a current block in the image, from among a plurality of contexts; and performing arithmetic coding on the control parameter for the current block to generate a bitstream corresponding to the current block, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type, and the second type is (i) “merge_flag”, (ii) “ref_idx_l0” or “ref_idx_l1”, (iii) “inter_pred_flag”, (iv) “mvd_l0” or “mvd_l1”, (v) “no_residual_data_flag”, (vi) “intra_chroma_pred_mode”, (vii) “cbf_luma”, and (viii) “cbf_cb” or “cbf_cr”.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: August 13, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu
  • Patent number: 10382774
    Abstract: By the moving picture coding method and the moving picture decoding method, it is possible to improve coding efficiency. The moving picture coding apparatus includes a merge block candidate calculation unit that (i) specifies merge block candidates at merge mode, by using colpic information such as motion vectors and reference picture index values of neighbor blocks of a current block to be coded and a motion vector and the like of a collocated block of the current block which are stored in a colPic memory, and (ii) generates a combined merge block by using the merge block candidates.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: August 13, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Toshiyasu Sugio, Takahiro Nishi, Youji Shibahara, Hisao Sasai
  • Publication number: 20190246134
    Abstract: An encoder includes circuitry and memory. When performing, using the memory, a normal inter prediction mode in which motion vector precisions are selectively used, the circuitry: selects a motion vector precision for a current block from the motion vector precisions; generates, with reference to a motion vector of a neighboring block in the current block, an intermediate motion vector predictor list in which motion vector predictor candidates having a same motion vector precision regardless of the motion vector precision selected from motion vector precisions are registered; performs a rounding process on each motion vector predictor candidate so that the motion vector predictor candidates have the motion vector precision; selects a motion vector predictor from a final MV predictor list obtained thereby; and performs a motion compensation process on the current block, using a motion vector obtained by adding the motion vector predictor selected and a motion vector difference.
    Type: Application
    Filed: February 6, 2019
    Publication date: August 8, 2019
    Inventors: Kiyofumi ABE, Takahiro NISHI, Tadamasa TOMA, Ryuichi KANOH
  • Publication number: 20190246132
    Abstract: An image decoding method includes: dividing a current block into sub-blocks; deriving, for each sub-block, one or more prediction information candidates; obtaining an index; and decoding the current block using the prediction information candidate selected by the index.
    Type: Application
    Filed: April 17, 2019
    Publication date: August 8, 2019
    Inventors: Toshiyasu SUGIO, Takahiro NISHI, Youji SHIBAHARA, Kyoko TANIKAWA, Hisao SASAI, Toru MATSUNOBU, Kengo TERADA
  • Publication number: 20190246140
    Abstract: A method for coding multiple binary data into a bitstream is disclosed. The method splits each of four luma binary data into a luma context-dependent segment and a luma context-independent segment, and splits one chroma binary data into a chroma context-dependent segment and a chroma context-independent segment. The method groups first coded data including four coded luma context-dependent segments, second coded data including four coded luma context-independent segments and third coded data including a coded chroma context-dependent segment and a coded chroma context-independent segment. The method further performs, separately, context adaptive binary arithmetic coding on the first coded data and the chroma context-dependent segment using a variable probability. The method also performs, separately, bypass coding on the second coded data and the chroma context-independent segment using a fixed probability.
    Type: Application
    Filed: April 15, 2019
    Publication date: August 8, 2019
    Applicant: Sun Patent Trust
    Inventors: Hisao SASAI, Takahiro NISHI, Youji SHIBAHARA, Toshiyasu SUGIO, Kyoko TANIKAWA, Toru MATSUNOBU
  • Publication number: 20190238788
    Abstract: An apparatus according to one aspect of the present disclosure includes: one or more memories, and circuitry which, in operation; decodes a video stream to generate a first video signal with a first luminance range; acquires characteristic data indicating the luminance range of the first video signal; converts the characteristic data into control information according to a predetermined transmission protocol; and outputs the control information in accordance with the predetermined transmission protocol.
    Type: Application
    Filed: April 9, 2019
    Publication date: August 1, 2019
    Inventors: Tadamasa TOMA, Masayuki Kozuka, Takahiro Nishi, Kengo Terada
  • Publication number: 20190238876
    Abstract: An image coding method for coding an image on a block-by-block basis, includes: selecting, for each of a plurality of sub-blocks included in a coding-target block and each including a plurality of coefficients, a context for performing arithmetic coding on a parameter indicating a coding-target coefficient included in the sub-block from a context set corresponding to the sub-block, based on at least one reference coefficient located around the coding-target coefficient, the coding-target block being a transform unit; and performing arithmetic coding on the parameter indicating the coding-target coefficient using probability information about the selected context, wherein, in the selecting, the context is selected from the context set, the context set corresponding to a sum of (i) a value indicating a position in a horizontal direction of the sub-block in the coding-target block and (ii) a value indicating a position in a vertical direction of the sub-block in the coding-target block.
    Type: Application
    Filed: April 11, 2019
    Publication date: August 1, 2019
    Inventors: Kengo TERADA, Takahiro NISHI, Youji SHIBAHARA, Kyoko TANIKAWA, Hisao SASAI, Toshiyasu SUGIO, Toru MATSUNOBU
  • Publication number: 20190238814
    Abstract: In a reproduction method, a video stream has a first dynamic range where a maximum value of a luminance dynamic range is more than a predetermined luminance value, and a display apparatus displays video in a second dynamic range narrower than the first dynamic range. The reproduction method displays video based on a first reproduction signal or a second reproduction signal. The first reproduction signal is obtained by: reproducing a first video stream quantized based on a hybrid OETF without performing luminance conversion; or reproducing the first video stream subjected to the luminance conversion. The second reproduction signal is obtained by performing the luminance conversion on a second video stream not quantized based on the hybrid OETF, and reproducing the second video stream subjected to the luminance conversion.
    Type: Application
    Filed: April 11, 2019
    Publication date: August 1, 2019
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masayuki KOZUKA, Takahiro NISHI, Kengo TERADA, Tadamasa TOMA
  • Publication number: 20190238844
    Abstract: An image coding method includes: generating a first flag indicating whether or not a motion vector predictor is to be selected from among one or more motion vector predictor candidates; generating a second flag indicating whether or not a motion vector predictor is to be selected from among the one or more motion vector predictor candidates in coding a current block to be coded in a predetermined coding mode, when the first flag indicates that a motion vector predictor is to be selected; and generating a coded signal in which the first flag and the second flag are included in header information, when the first flag indicates that a motion vector predictor is to be selected.
    Type: Application
    Filed: April 8, 2019
    Publication date: August 1, 2019
    Inventors: Toshiyasu SUGIO, Takahiro NISHI, Youji SHIBAHARA, Hisao SASAI
  • Patent number: 10368085
    Abstract: A method of performing motion vector prediction for a current block in a picture is provided which includes: deriving a candidate for a motion vector predictor to code a current motion vector of the current block, from a first motion vector of a first block that is spatially adjacent or temporally adjacent to the current block; adding the derived candidate to a list of candidates; and deriving at least one motion vector predictor based on a selected candidate from the list of candidates, wherein the deriving of the candidate includes determining whether to derive the candidate from the first motion vector, based on a type of a current reference picture and a type of a first reference picture, the current reference picture being referred to from the current block using the current motion vector, the first reference picture being referred to from the first block using the first motion vector.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: July 30, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Chong Soon Lim, Sue Mon Thet Naing, Takahiro Nishi, Hisao Sasai, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu, Kengo Terada
  • Publication number: 20190230378
    Abstract: Obtaining one or more motion vector predictor candidates includes: (a1) generating a motion vector predictor candidate, based on motion vectors of first adjacent blocks adjacent to a block to be processed in a first direction; and (a2) generating a motion vector predictor candidate, based on motion vectors of second adjacent blocks adjacent to the block to be processed in a second direction, and step (a2) includes: determining whether the first adjacent blocks include an inter-predicted block; and searching for a motion vector on which scaling processing can be performed from among the motion vectors of the second adjacent blocks when it is determined that the first adjacent blocks do not include an inter-predicted block, and executing, when the motion vector on which scaling processing can be performed is obtained in the search, scaling processing on the motion vector obtained in the search.
    Type: Application
    Filed: March 28, 2019
    Publication date: July 25, 2019
    Inventors: Toshiyasu SUGIO, Takahiro NISHI, Youji SHIBAHARA, Kyoko TANIKAWA, Hisao SASAI, Toru MATSUNOBU, Kengo TERADA
  • Patent number: 10362286
    Abstract: In a converting method relating to picture luminance according to one aspect of the present disclosure, the picture luminance is formed by luminance values in a first luminance range. In this method, a first luminance signal that indicates code values obtained by quantizing the luminance value of the picture is obtained, code values, which are associated with the code values indicated by the obtained first luminance signal by quantization for a second luminance range different in a maximum value from the first luminance range are determined as converted code values, and the first luminance signal is converted into a second luminance signal indicating the converted code values. As a result, the converting method is further improved.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: July 23, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Tadamasa Toma, Masayuki Kozuka, Takahiro Nishi
  • Patent number: 10362324
    Abstract: An image coding method for coding an image on a block-by-block basis, includes: selecting, for each of a plurality of sub-blocks included in a coding-target block and each including a plurality of coefficients, a context for performing arithmetic coding on a parameter indicating a coding-target coefficient included in the sub-block from a context set corresponding to the sub-block, based on at least one reference coefficient located around the coding-target coefficient, the coding-target block being a transform unit; and performing arithmetic coding on the parameter indicating the coding-target coefficient using probability information about the selected context, wherein, in the selecting, the context is selected from the context set, the context set corresponding to a sum of (i) a value indicating a position in a horizontal direction of the sub-block in the coding-target block and (ii) a value indicating a position in a vertical direction of the sub-block in the coding-target block.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: July 23, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Kengo Terada, Takahiro Nishi, Youji Shibahara, Kyoko Tanikawa, Hisao Sasai, Toshiyasu Sugio, Toru Matsunobu
  • Patent number: 10356474
    Abstract: According to one aspect of the present disclosure, a transmission method for enabling transmission of content using a broadcast wave and a communication channel includes: transmitting auxiliary information using at least the broadcast wave, the auxiliary information being information for synchronizing content transmission using the broadcast wave and content transmission using the communication channel when the content is transmitted using the broadcast wave and the communication channel, and the auxiliary information causing a reception side to perform the synchronization when the reception side receives the auxiliary information. Therefore, even if timing of starting reception of the content through the communication is delayed, the reception side can play back the content by a combination of the broadcasting and the communication.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: July 16, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Tadamasa Toma, Noritaka Iguchi, Takahiro Nishi, Hisaya Katou
  • Patent number: RE47537
    Abstract: The image decoding method includes: determining a context for use in a current block to be processed, from among a plurality of contexts; and performing arithmetic decoding on a bit sequence corresponding to the current block, using the determined context, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: July 23, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu
  • Patent number: RE47547
    Abstract: The image decoding method includes: determining a context for use in a current block to be processed, from among a plurality of contexts; and performing arithmetic decoding on a bit sequence corresponding to the current block, using the determined context, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: July 30, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu