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: 20240114137
    Abstract: An encoder that encodes a video includes a processor and memory. Using the memory, the processor: derives a prediction error of an image included in the video, by subtracting a prediction image of the image from the image; determines a secondary transform basis based on a primary transform basis, the primary transform basis being a transform basis for a primary transform to be performed on the prediction error, the secondary transform basis being a transform basis for a secondary transform to be performed on a result of the primary transform; performs the primary transform on the prediction error using the primary transform basis; performs the secondary transform on a result of the primary transform using the secondary transform basis; performs quantization on a result of the secondary transform; and encodes a result of the quantization as data of the image.
    Type: Application
    Filed: November 29, 2023
    Publication date: April 4, 2024
    Inventors: Ryuichi KANOH, Tadamasa TOMA, Kiyofumi ABE, Takahiro NISHI
  • Publication number: 20240114129
    Abstract: An encoder includes circuitry and memory coupled to the circuitry. The circuitry, in operation: determines whether a size of a current block, which is a unit for which a vector candidate list including vector candidates is generated, is less than or equal to a threshold; when the size of the current block is less than or equal to the threshold, generates the vector candidate list by registering a history-based motion vector predictor (HMVP) vector candidate in the vector candidate list from an HMVP table without performing a first pruning process; when the size of the current block is greater than the threshold, generates the vector candidate list by performing the first pruning process and registering the HMVP vector candidate in the vector candidate list from the HMVP table; and encodes the current block using the vector candidate list.
    Type: Application
    Filed: December 5, 2023
    Publication date: April 4, 2024
    Inventors: Jing Ya LI, Chong Soon Lim, Han Boon Teo, Che Wei Kuo, Hai Wei Sun, Chu Tong Wang, Kiyofumi Abe, Takahiro Nishi, Tadamasa Toma, Yusuke Kato
  • Publication number: 20240114134
    Abstract: An encoder includes circuitry and a memory coupled to the circuitry. The circuitry, in operation, determines whether or not a ternary split process of splitting a block into three sub blocks in a first direction parallel to a first longer side of the block is allowed by comparing a size of a second shorter side of the block to a minimum threshold value. The circuitry, responsive to the ternary split process being allowed, writes, into a bitstream, a split direction parameter indicative of a splitting direction. The circuitry, in operation, splits the block into a plurality of sub blocks in a direction indicated by the split direction parameter; and encodes the plurality of sub blocks. The minimum threshold value corresponds to a minimum size supported in a transform process.
    Type: Application
    Filed: December 5, 2023
    Publication date: April 4, 2024
    Inventors: Sughosh Pavan SHASHIDHAR, Hai Wei SUN, Chong Soon LIM, Ru Ling LIAO, Han Boon TEO, Jing Ya LI, Takahiro NISHI, Kiyofumi ABE, Ryuichi KANOH, Tadamasa TOMA
  • Publication number: 20240114136
    Abstract: An image encoder/decoder includes circuitry and a memory coupled to the circuitry. When a geometry of a block of a picture satisfies a first condition, the circuitry splits the block of the picture into sub blocks having a first set of geometries. When the geometry of the block does not satisfy the first condition, the circuitry splits the block of the picture into sub blocks having a second set of geometries, the second set of geometries being different from the first set of geometries. The circuitry encodes/decodes the sub blocks of the block.
    Type: Application
    Filed: December 6, 2023
    Publication date: April 4, 2024
    Inventors: Chong Soon LIM, Hai Wei SUN, Sughosh Pavan SHASHIDHAR, Han Boon TEO, Ru Ling LIAO, Takahiro NISHI, Tadamasa TOMA
  • Publication number: 20240114169
    Abstract: An encoder determines, based on a width and a height of a block, whether or not to disable a prediction mode in which the block is split along a partitioning line defined by a distance and an angle and then prediction is performed; and encodes the block with the prediction mode disabled or not disabled according to a result of the determination on whether or not to disable the prediction mode. Here, the distance is the shortest distance between the center of the block and the partitioning line, and the angle is an angle representing a direction from the center of the block toward the partitioning line in the shortest distance. The encoder determines to disable the prediction mode when (i) a width-to-height ratio is at least 8 or (ii) a height-to-width ratio is at least 8.
    Type: Application
    Filed: December 1, 2023
    Publication date: April 4, 2024
    Inventors: Jing Ya LI, Che Wei KUO, Chong Soon LIM, Chu Tong WANG, Han Boon TEO, Hai Wei SUN, Kiyofumi ABE, Takahiro NISHI, Tadamasa TOMA, Yusuke KATO
  • Patent number: 11949903
    Abstract: A decoding method and apparatus are provided. A first candidate having a first motion vector that has been used to decode a first block, a first prediction direction that corresponds to the first motion vector, and a first reference picture index that identifies a first reference picture is derived. A second candidate having a second motion vector that has been used to decode a second block, a second prediction direction that corresponds to the second motion vector, and a second reference picture index that identifies a second reference picture is derived. When a total number of candidates is less than a maximum number, a third candidate is derived by combining the first motion vector and the first reference picture index for the first prediction direction of the first candidate and the second motion vector and the second reference picture index for the second prediction direction of the second candidate.
    Type: Grant
    Filed: June 20, 2022
    Date of Patent: April 2, 2024
    Assignee: SUN PATENT TRUST
    Inventors: Toshiyasu Sugio, Takahiro Nishi, Youji Shibahara, Kyoko Tanikawa, Hisao Sasai, Toru Matsunobu
  • Patent number: 11949907
    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: December 28, 2022
    Date of Patent: April 2, 2024
    Assignee: SUN PATENT TRUST
    Inventors: Toshiyasu Sugio, Takahiro Nishi, Youji Shibahara, Kyoko Tanikawa, Hisao Sasai, Toru Matsunobu, Kengo Terada
  • Patent number: 11949884
    Abstract: An encoder encodes a video, and includes: circuitry; and memory coupled to the circuitry. Using the memory, the circuitry: obtains at least two items of prediction information for a first partition included in the video; derives at least one template from neighboring samples which neighbor the first partition; calculates at least two costs, using the at least one template and the at least two items of prediction information; using the at least two costs, (i) determines at least one splitting direction for the first partition or (ii) assigns one of the at least two items of prediction information to a second partition split from the first partition according to the splitting direction, and another thereof to a third partition split from the first partition according to the splitting direction; and encodes the first partition according to the splitting direction and the at least two items of prediction information.
    Type: Grant
    Filed: March 7, 2023
    Date of Patent: April 2, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Kiyofumi Abe, Takahiro Nishi, Tadamasa Toma, Ryuichi Kanoh, Chong Soon Lim, Ru Ling Liao, Hai Wei Sun, Sughosh Pavan Shashidhar, Han Boon Teo, Jing Ya Li
  • Publication number: 20240107012
    Abstract: A decoder comprises circuitry and memory. The circuitry, using the memory, in operation, determines a number of first pixels and a number of second pixels used in a deblocking filter process, wherein the first pixels are located at an upper side of a block boundary and the second pixels are located at a lower side of the block boundary, and performs the deblocking filter process on the block boundary. The number of the first pixels and the number of the second pixels are selected from among candidates, wherein the candidates include at least 4 and M larger than 4. Response to a location of the block boundary being a predetermined location, the number of the first pixels used in the deblocking filter process is limited to be 4.
    Type: Application
    Filed: November 15, 2023
    Publication date: March 28, 2024
    Inventors: Ryuichi KANOH, Takahiro NISHI, Tadamasa TOMA, Kiyofumi ABE
  • Publication number: 20240107116
    Abstract: A transmission method in the present disclosure includes; obtaining an image and image signal characteristics information indicating one of an opto-electrical transfer function (OETF) or an electro-optical transfer function (EOTF) as image signal characteristics of the image; and transmitting a signal including the image and the image signal characteristics information. According to the transmission method in the present disclosure, a receiving device that received a high dynamic range (HDR) image and a standard dynamic range (SDR) image transmitted through broadcasting or the like can display these images appropriately.
    Type: Application
    Filed: December 4, 2023
    Publication date: March 28, 2024
    Inventors: Takahiro NISHI, Tadamasa Toma
  • Publication number: 20240104782
    Abstract: A three-dimensional data encoding method includes: encoding, for each of second units, information about positions of three-dimensional points included in a first unit, to generate encoded data items, the second units being smaller than the first unit that is an encoding unit; and outputting the encoded data items. Each of the encoded data items includes no individual additional information. The encoded data items include common additional information. The common additional information includes first information indicating a size of a first encoded data item included in the encoded data items.
    Type: Application
    Filed: December 8, 2023
    Publication date: March 28, 2024
    Inventors: Takahiro NISHI, Toshiyasu Sugio, Noritaka Iguchi
  • Publication number: 20240102405
    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: Application
    Filed: December 8, 2023
    Publication date: March 28, 2024
    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: 11941955
    Abstract: A method includes causing a computer of a communication terminal to perform a process including acquiring, in response to receipt of a beacon signal from a vending machine, identification information and type information and stock information of drinks from the vending machine by short-range wireless communication; acquiring preference information on drinks of a user of the communication terminal; acquiring current biological information of the user; generating, based on the identification information, the type information, the stock information, the preference information, and the biological information, a push notification screen that recommends at least one drink matching a preference of the user indicated by the preference information in relation to a current physical condition of the user indicated by the biological information from among the drinks stored in the vending machine indicated by the identification information; and displaying the push notification screen on a display of the communication term
    Type: Grant
    Filed: November 9, 2022
    Date of Patent: March 26, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hiroshi Yahata, Takahiro Nishi, Tadamasa Toma, Toshiyasu Sugio
  • Publication number: 20240098287
    Abstract: An encoder which encodes a video including a plurality of pictures includes circuitry and memory. Using the memory, the circuitry performs: encoding a first picture among the plurality of pictures; and performing (i) a first operation for encoding a parameter set for a second picture which follows the first picture in coding order among the plurality of pictures after encoding the first picture, and encoding the second picture after encoding the parameter set, or (ii) a second operation for encoding the second picture without encoding the parameter set after encoding the first picture. The circuitry performs the first operation when the second picture is a determined picture, in the performing of the first operation or the second operation.
    Type: Application
    Filed: November 21, 2023
    Publication date: March 21, 2024
    Inventors: Takahiro NISHI, Tadamasa Toma, Kiyofumi Abe, Ryuichi Kanoh
  • Publication number: 20240098313
    Abstract: A three-dimensional data encoding method includes: performing motion compensation on a plurality of encoded point clouds; merging the plurality of encoded point clouds that have been motion compensated to generate a reference point cloud; generating an N-ary tree structure of a current point cloud, where N is an integer greater than or equal to 2; and encoding the N-ary tree structure of the current point cloud using the reference point cloud.
    Type: Application
    Filed: November 20, 2023
    Publication date: March 21, 2024
    Inventors: Takahiro Nishi, Toshiyasu SUGIO, oritaka IGUCHI
  • Patent number: 11936887
    Abstract: An encoder includes circuitry, and memory coupled to the circuitry. The circuitry, in operation, for each of a plurality of sub-bitstreams having mutually different frame rates, encodes identification information into a header of a bitstream including the plurality of sub-bitstreams, the identification information indicating a temporal ID that is an identifier of a temporal layer related to a temporal scalability and corresponds to the sub-bitstream, and encodes level information indicating a conformance level of the sub-bitstream.
    Type: Grant
    Filed: November 16, 2022
    Date of Patent: March 19, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Virginie Drugeon, Tadamasa Toma, Takahiro Nishi, Kiyofumi Abe, Yusuke Kato
  • Patent number: 11936893
    Abstract: An encoder that includes memory and circuitry coupled to the memory. The circuitry encodes a slice into one or more data access regions in a variable length encoding process. The circuitry encodes one or more offsets into a slice header, based on a flag written into a sequence header and a total number of the one or more data access regions. The one or more offsets each specify a head position of a corresponding one of the one or more data access regions in a bitstream. When the flag indicates that the one or more offsets are to be encoded and the total number is at least two, the one or more offsets are encoded. The flag switches between encoding and not encoding the one or more offsets regardless of whether the total number is at least two.
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: March 19, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Kiyofumi Abe, Takahiro Nishi, Tadamasa Toma, Yusuke Kato
  • Patent number: 11936886
    Abstract: An encoder includes memory and circuitry coupled to the memory. The circuitry, for each of temporal sub-layers for temporal scalability different from spatial scalability, stores first parameters into buffering period supplemental enhancement information (SEI) and encodes the first parameters. The first parameters present initial delays in timing to extract data from a coded picture buffer (CPB). The circuitry stores a second parameter into the buffering period SEI and encodes the second parameter. The second parameter indicates a total number of the temporal sub-layers. A value of the second parameter is equal to a value of a third parameter that is encoded into a sequence parameter set and indicates a total number of the temporal sub-layers.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: March 19, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Virginie Drugeon, Tadamasa Toma, Takahiro Nishi, Kiyofumi Abe, Yusuke Kato
  • Publication number: 20240089431
    Abstract: An encoder includes processing circuitry and a memory coupled to the processing circuitry. Using the memory, the processing circuitry is configured to: change values of pixels in a first block and a second block to filter a boundary between the first block and the second block. The pixels include type one pixels and type two pixels different from the type one pixels. The first set of filter coefficients applied to the type one pixels in the first block and the second set of filter coefficients applied to the type one pixels in the second block are selected to be asymmetrical with respect to the boundary.
    Type: Application
    Filed: November 21, 2023
    Publication date: March 14, 2024
    Inventors: Ryuichi KANOH, Takahiro NISHI, Tadamasa TOMA
  • Patent number: RE49906
    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: September 2, 2021
    Date of Patent: April 2, 2024
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu