Patents by Inventor Toru Matsunobu

Toru Matsunobu 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: 20190124335
    Abstract: An image decoding apparatus, method, and medium for decoding a current block included in a bitstream are provided. A first candidate, having a first motion vector that has been used to decode a first block, is searched for from one or more candidates. The first block is spatially or temporally adjacent to the current block. Two or more second candidates, each having a second motion vector being a zero vector, are derived when the first candidate is unavailable in the searching. A current block is decoded using derived candidates. The derived candidates include the two or more second candidates.
    Type: Application
    Filed: December 18, 2018
    Publication date: April 25, 2019
    Applicant: Sun Patent Trust
    Inventors: Toshiyasu SUGIO, Takahiro NISHI, Youji SHIBAHARA, Kyoko TANIKAWA, Hisao SASAI, Toru MATSUNOBU
  • Publication number: 20190124334
    Abstract: A moving picture decoding apparatus, method, and medium for decoding a current block are provided. A first candidate is derived from a first motion vector that has been used to decode a first block. The first block is adjacent to the current block. A second candidate having a second motion vector that includes a non-zero value is derived. The non-zero value is assigned to a corresponding reference picture. The second motion vector is not derived by decoding a block adjacent to the current block. A candidate is selected from a plurality of candidates, including the first candidate and the second candidate. The current block is decoded using the selected candidate. The second candidate includes the non-zero value of the corresponding reference picture, selected from a plurality of referable reference pictures.
    Type: Application
    Filed: December 18, 2018
    Publication date: April 25, 2019
    Applicant: Sun Patent Trust
    Inventors: Toshiyasu SUGIO, Takahiro NISHI, Youji SHIBAHARA, Kyoko TANIKAWA, Hisao SASAI, Toru MATSUNOBU
  • Publication number: 20190124358
    Abstract: A moving picture decoding apparatus, method, and medium for decoding a current block are provided. A first candidate is derived from a first motion vector that has been used to decode a first block. It is determined whether a total number of one or more candidates including the first candidate is less than a maximum candidate number. A second candidate having a second motion vector is derived when the total number of the one or more candidates including the first candidate is less than the maximum candidate number. The second motion vector includes a zero vector. A candidate is selected from a plurality of candidates, including the first candidate and the second candidate. The current block is decoded using the selected candidate.
    Type: Application
    Filed: December 18, 2018
    Publication date: April 25, 2019
    Applicant: Sun Patent Trust
    Inventors: Toshiyasu SUGIO, Takahiro NISHI, Youji SHIBAHARA, Kyoko TANIKAWA, Hisao SASAI, Toru MATSUNOBU
  • Patent number: 10271082
    Abstract: A video distribution method is a video distribution method to be performed by a server that distributes a plurality of videos captured by a plurality of users from different viewpoints to a terminal apparatus. The video distribution method includes distributing, from a server to a terminal apparatus, a first video that is one of a plurality of videos captured by a plurality of users from different viewpoints and that is requested by the terminal apparatus, selecting a second video that is one of the plurality of videos and that is likely to be next requested next time by the terminal apparatus, and starting transmission of the second video to the terminal apparatus during distribution of the first video to the terminal apparatus.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: April 23, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Toshiyasu Sugio, Youji Shibahara, Yuki Maruyama, Toru Matsunobu, Yoichi Sugino, Mikihiro Ouchi, Hisao Sasai, Kuniaki Isogai, Ryuji Muta, Takako Hori, Tomoaki Itoh
  • Publication number: 20190116377
    Abstract: A moving picture decoding apparatus, method, and medium for decoding a current block are provided. A first candidate is derived from a first motion vector that has been used to decode a first block. The first block is adjacent to the current block. A second candidate having a second motion vector that is one of a zero vector or a non-zero value vector is derived. The second motion vector is not derived by decoding a block adjacent to the current block. A candidate is selected from a plurality of candidates, including the first candidate and the second candidate. The current block is decoded using the selected candidate.
    Type: Application
    Filed: December 12, 2018
    Publication date: April 18, 2019
    Applicant: Sun Patent Trust
    Inventors: Toshiyasu SUGIO, Takahiro NISHI, Youji SHIBAHARA, Kyoko TANIKAWA, Hisao SASAI, Toru MATSUNOBU
  • Publication number: 20190108656
    Abstract: A three-dimensional data encoding method includes: extracting, from first three-dimensional data, second three-dimensional data having an amount of a feature greater than or equal to a threshold; and encoding the second three-dimensional data to generate first encoded three-dimensional data. For example, the three-dimensional data encoding method may further include encoding the first three-dimensional data to generate the second encoded three-dimensional data.
    Type: Application
    Filed: December 6, 2018
    Publication date: April 11, 2019
    Inventors: Toshiyasu SUGIO, Takahiro NISHI, Tadamasa TOMA, Toru MATSUNOBU, Satoshi YOSHIKAWA, Tatsuya KOYAMA
  • Patent number: 10247069
    Abstract: A method of encoding video including: writing a plurality of predetermined buffer descriptions into a sequence parameter set of a coded video bitstream; writing a plurality of updating parameters into a slice header of the coded video bitstream for selecting and modifying one buffer description out of the plurality of buffer descriptions; and encoding a slice into the coded video bitstream using the slice header and the modified buffer description.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: April 2, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Viktor Wahadaniah, Chong Soon Lim, Sue Mon Thet Naing, Hai Wei Sun, Takahiro Nishi, Hisao Sasai, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu
  • Patent number: 10250887
    Abstract: An image decoding method of decoding, on a block-by-block basis, image data included in a coded stream includes: deriving candidates for an intra prediction mode to be used for intra prediction for a decoding target block, the number of the candidates constantly being a plural number; obtaining, from the coded stream, an index for identifying one of the derived candidates for the intra prediction mode; and determining, based on the obtained index, one of the derived candidates for the intra prediction mode as the intra prediction mode to be used for intra prediction for the decoding target block.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: April 2, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu
  • Patent number: 10244267
    Abstract: An image decoding method of decoding, on a per-block basis, a coded image included in a bitstream, includes: performing arithmetic decoding on a current block to be decoded; determining whether or not the current block is at the end of a slice; determining, when it is determined that the current block is not at the end of the slice, whether or not the current block is at the end of a sub-stream which is a structural unit of the image that is different from the slice; and performing arithmetic decoding on a sub-last bit and performing arithmetic decoding termination, when it is determined that the current block is at the end of the sub-stream.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: March 26, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Kyoko Tanikawa, Toshiyasu Sugio, Toru Matsunobu, Kengo Terada
  • Patent number: 10237579
    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, and the second type is “intra_chroma_pred_mode”.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: March 19, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu
  • Publication number: 20190082190
    Abstract: A moving picture coding method includes (i) transforming, for each of one or more second processing units included in the first processing unit, a moving picture signal in a spatial domain into a frequency domain coefficient and quantizing the frequency domain coefficient, and (ii) performing arithmetic coding on a luminance CBF flag indicating whether or not a quantized coefficient is included in the second processing unit in which transform and quantization are performed, wherein, in the arithmetic coding, a probability table for use in arithmetic coding is determined according to whether or not the size of the first processing unit is identical to the size of the second processing unit and whether or not the second processing unit has a predetermined maximum size.
    Type: Application
    Filed: November 9, 2018
    Publication date: March 14, 2019
    Inventors: Hisao SASAI, Takahiro NISHI, Youji SHIBAHARA, Toshiyasu SUGIO, Kyoko TANIKAWA, Toru MATSUNOBU
  • Publication number: 20190075295
    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: Application
    Filed: November 2, 2018
    Publication date: March 7, 2019
    Inventors: Hisao SASAI, Takahiro NISHI, Youji SHIBAHARA, Toshiyasu SUGIO, Kyoko TANIKAWA, Toru MATSUNOBU
  • Publication number: 20190075300
    Abstract: An encoding method of encoding units included in a picture is provided. The encoding method generates a first flag indicating whether a removal time of encoded data from a buffer by a hypothetical decoder is set per unit. When the removal time is set per unit, a second flag is generated which indicates whether an interval between removal times of the units is constant. When the second flag indicates that the interval is constant, common-interval information is generated which is distinct from the second flag and indicates a constant time interval between the removal times of the units. A bitstream including the encoded data, the first flag, the second flag, and the common-interval information is generated. The first flag is included in video usability information of the bitstream. The second flag and the common-interval information are included in control information of the bitstream.
    Type: Application
    Filed: November 7, 2018
    Publication date: March 7, 2019
    Applicant: Sun Patent Trust
    Inventors: Tadamasa TOMA, Takahiro NISHI, Youji SHIBAHARA, Hisao SASAI, Toshiyasu SUGIO, Kyoko TANIKAWA, Toru MATSUNOBU, Kengo TERADA
  • Publication number: 20190075324
    Abstract: An image coding method is provided for coding an image on a block-by-block basis. The method includes determining transform unit sizes in a block to be equal to or greater than a preset minimum transform unit size, setting prediction unit sizes in the block to be equal to the determined transform unit sizes, respectively, and predicting the block, on each prediction unit determined by using the prediction unit sizes to generate a prediction block. The method also includes transforming a difference between the block and the prediction block to residual data, on each transform unit determined by using the transform unit sizes, setting coding unit sizes in the block to be equal to the determined transform unit sizes, respectively, and coding the residual data on each coding unit determined by using the coding unit sizes to generate a bitstream.
    Type: Application
    Filed: November 8, 2018
    Publication date: March 7, 2019
    Applicant: Sun Patent Trust
    Inventors: Hai Wei SUN, Yi Xuan ZHANG, Chong Soon LIM, Toru MATSUNOBU, Toshiyasu SUGIO
  • Publication number: 20190068979
    Abstract: An image coding method includes: generating a predicted block; calculating a residual block; calculating quantized coefficients by performing transform and quantization on the residual block; calculating a coded residual block by performing inverse quantization and inverse transform on the quantized coefficients; generating a temporary coded block; determining whether or not an offset process is required, to generate first flag information indicating a result of the determination; executing the offset process on the temporary coded block when it is determined that the offset process is required; and performing variable-length coding on the quantized coefficients and the first flag information.
    Type: Application
    Filed: October 29, 2018
    Publication date: February 28, 2019
    Inventors: Toru MATSUNOBU, Takahiro NISHI, Youji SHIBAHARA, Hisao SASAI, Kyoko TANIKAWA, Toshiyasu SUGIO
  • Publication number: 20190068984
    Abstract: The image decoding method includes determining a context for use in a current block to be processed, from among a plurality of contexts, wherein in the determining: the context is determined under a condition that control parameters of a left block and an upper block are used, when the signal type is a first type; and the context is determined under a third condition that the control parameter of the upper block is not used and a hierarchical depth of a data unit to which the control parameter of the current block belongs is used, when the signal type is a third type, and the third type is one or more of (i) “merge_flag”, (ii) “ref_idx_l0” or “ref_idx_l1”, (iii) “inter_pred_flag”, (iv) “mvd_l0” or “mvd_l1”, (v) “intra_chroma_pred_mode”, (vi) “cbf_luma”, and (vii) “cbf_cb” or “cbf_cr”.
    Type: Application
    Filed: October 26, 2018
    Publication date: February 28, 2019
    Inventors: Hisao SASAI, Takahiro NISHI, Youji SHIBAHARA, Toshiyasu SUGIO, Kyoko TANIKAWA, Toru MATSUNOBU
  • Publication number: 20190068971
    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, and the second type is “no_residual_data_flag”.
    Type: Application
    Filed: October 29, 2018
    Publication date: February 28, 2019
    Inventors: Hisao SASAI, Takahiro NISHI, Youji SHIBAHARA, Toshiyasu SUGIO, Kyoko TANIKAWA, Toru MATSUNOBU
  • Patent number: 10212455
    Abstract: Image coding systems in recent years support a plurality of partitions about a transform unit size, prediction unit size, and coding unit size, which are processing units of transform, prediction, and coding, respectively. That is, combination of respective unit sizes is diverse. The present disclosure provides a method and apparatus for reducing a candidate number of partition sizes in an image and for reducing complexity in image coding by determining transform unit sizes and by setting prediction unit sizes and coding unit sizes based on the determined transform unit sizes.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: February 19, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Hai Wei Sun, Yi Xuan Zhang, Chong Soon Lim, Toru Matsunobu, Toshiyasu Sugio
  • Patent number: 10212447
    Abstract: A moving picture coding includes: coding a first flag indicating whether or not temporal motion vector prediction is used; when the first flag indicates that the temporal motion vector prediction is used: coding a first parameter for calculating the temporal predictive motion vector; wherein when the first flag indicates that the temporal motion vector prediction is not used, the first parameter is not coded.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: February 19, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Toshiyasu Sugio, Takahiro Nishi, Youji Shibahara, Kyoko Tanikawa, Hisao Sasai, Toru Matsunobu, Kengo Terada
  • Patent number: RE47366
    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: April 23, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu