Patents by Inventor Takahiro Toma

Takahiro Toma 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: 11190804
    Abstract: The encoder includes processing circuitry, and memory. Using the memory, the processing circuitry: generates a predicted image of an input image that is a current image to be encoded, based on generated data output from a generator network in response to a reference image being input to the generator network, the generator network being a neural network; calculates a prediction error by subtracting the predicted image from the input image; and generates an encoded image by at least transforming the prediction error.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: November 30, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Takahiro Nishi, Tadamasa Toma, Kiyofumi Abe, Ryuichi Kanoh, Luca Rigazio, Alec Hodgkinson
  • Patent number: 11190783
    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: Grant
    Filed: April 3, 2020
    Date of Patent: November 30, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Takahiro Nishi, Tadamasa Toma, Kiyofumi Abe, Ryuichi Kanoh
  • Publication number: 20210363027
    Abstract: A metal composite hydroxide represented by a general formula (1): Ni1?x?yCoxMnyMz(OH)2+a, in which [(D90?D10)/MV] is 0.80 or more, the metal composite hydroxide contains a first particle having a core portion inside the particle and a shell portion formed around the core portion and a second particle having a uniform composition inside the particle, and the second particle has a similar composition to the shell portion and accounts for 60% or more of a total number of particles of 4 ?m or less in the metal composite hydroxide.
    Type: Application
    Filed: February 20, 2019
    Publication date: November 25, 2021
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Takahiro Toma, Haruki Kaneda, Yuki Koshika
  • Publication number: 20210361224
    Abstract: There is provided a biological gas measurement device that continuously collects biological gas, and is able to immediately and chronologically measure a target substance from the collected biological gas. A skin gas measurement device includes a biological gas collector 10 having an aperture portion 11 in a side thereof that faces a living body, and having a recessed portion 12 that is connected with the aperture portion 11 and serves as a space for collecting biological gas, a measurement device 100 that measures a target substance in the biological gas collected by the biological gas collector 10, an outflow path 40 through which collected biological gas is discharged from the recessed portion 12 to the measurement device 100, and a correction device 124 that corrects measurements of the target substance performed by the measurement device 100, and enables measurement results of the target substance from which effects of moisture present inside the outflow path 40 have been excluded to be output.
    Type: Application
    Filed: November 22, 2018
    Publication date: November 25, 2021
    Applicant: National University Corporation Tokyo Medical and Dental University
    Inventors: Kohji MITSUBAYASHI, Takahiro ARAKAWA, Koji TOMA, Takuma SUZUKI, Kenta IITANI
  • Patent number: 11184612
    Abstract: An encoder which codes a moving picture includes: a processor; and a memory, wherein the processor, using the memory: subtracts a prediction image of an image included in the moving picture from the image so as to derive a prediction error; sequentially selects a plurality of transform basis candidates; derives an evaluation value of a transform basis candidate selected; compares the evaluation value with a threshold value; based on a result of the comparison, skips selection of one or more transform basis candidates that have not been selected; determines the transform basis from one or more transform basis candidates selected; performs the transform of the prediction error, using the transform basis; quantizes a result of the transform; and codes a result of the quantization as data of the image.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: November 23, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Ryuichi Kanoh, Tadamasa Toma, Kiyofumi Abe, Takahiro Nishi
  • Publication number: 20210360239
    Abstract: An encoder comprises: a processor; and memory coupled to the processor, in which in operation, the processor: generates a first prediction image having full-pel precision, based on a motion vector of the current block; generates a second prediction image having fraction-pel precision by interpolating a value at a fraction-pel position between full-pel positions included in the first prediction image, using a first interpolation filter or a second interpolation filter differing in a total number of taps from the first interpolation filter; and encodes the current block based on the second prediction image, and in the generating of the second prediction image, the processor switches between using the first interpolation filter and the second interpolation filter depending on whether an affine mode is used for the current block.
    Type: Application
    Filed: August 2, 2021
    Publication date: November 18, 2021
    Inventors: Jing Ya LI, Chong Soon LIM, Han Boon TEO, Hai Wei SUN, Che Wei KUO, Kiyofumi ABE, Takahiro NISHI, Tadamasa TOMA, Yusuke KATO
  • Publication number: 20210360268
    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: Application
    Filed: July 29, 2021
    Publication date: November 18, 2021
    Inventors: Virginie DRUGEON, Tadamasa TOMA, Takahiro NISHI, Kiyofumi ABE, Yusuke KATO
  • Publication number: 20210360272
    Abstract: A decoder includes circuitry which, in operation, parses a first flag indicating whether a CCALF (cross component adaptive loop filtering) process is enabled for a first block located adjacent to a left side of a current block; parses a second flag indicating whether the CCALF process is enabled for a second block located adjacent to an upper side of the current block; determines a first index associated with a color component of the current block; and derives a second index indicating a context model, using the first flag, the second flag, and the first index. The circuitry, in operation, performs entropy decoding of a third flag indicating whether the CCALF process is enabled for the current block, using the context model indicated by the second index; and performs the CCALF process on the current block in response to the third flag indicating the CCALF process is enabled for the current block.
    Type: Application
    Filed: July 29, 2021
    Publication date: November 18, 2021
    Inventors: Che-Wei KUO, Chong Soon LIM, Han Boon TEO, Jing Ya LI, Hai Wei SUN, Chu Tong WANG, Tadamasa TOMA, Takahiro NISHI, Kiyofumi ABE, Yusuke KATO
  • Publication number: 20210360281
    Abstract: An encoder includes memory and circuitry configured to determine a merge mode to be applied to a current block, wherein the merge mode includes a sub-block merge mode and a first merge mode. In the merge mode, inter-prediction parameters are inferred from a neighboring block neighboring the current block. In the sub-block merge mode, the current block includes a plurality of sub-blocks, and inter-prediction parameters are provided for each of the plurality of sub-blocks. When the merge mode is determined to be the first merge mode, the circuitry generates a prediction image for the current block by performing a bi-directional optical flow prediction process, wherein the bi-directional optical flow prediction process uses a spatial gradient for the current block. When the merge mode is determined to be the sub-block merge mode, the circuitry generates a prediction image for the current block by not performing the bi-directional optical flow prediction process.
    Type: Application
    Filed: July 29, 2021
    Publication date: November 18, 2021
    Inventors: Tadamasa TOMA, Takahiro NISHI, Kiyofumi ABE, Ryuichi KANOH
  • Publication number: 20210360282
    Abstract: An encoder includes circuitry and memory coupled to the circuitry. In operation, the circuitry: derives a motion vector of a current block by referring to at least one reference picture different from a picture to which the current block belongs; performs a mode for estimating, for each sub-block unit of sub-blocks obtained by splitting the current block, a surrounding region of the motion vector to correct the motion vector; determines whether to apply deblocking filtering to each of boundaries between neighboring ones of the sub-blocks; and applies the deblocking filtering to the boundary, based on a result of the determination.
    Type: Application
    Filed: July 29, 2021
    Publication date: November 18, 2021
    Inventors: Tadamasa TOMA, Takahiro NISHI, Kiyofumi ABE, Yusuke KATO
  • Publication number: 20210352322
    Abstract: An encoder includes circuitry and memory. The circuitry, using the memory: prohibits a first splitting method when arrangement and shapes of blocks obtained by splitting a first block multiple times by the first splitting method are identical to arrangement and shapes of blocks obtained by splitting the first block multiple times by a second splitting method different from the first splitting method, and when scan order of the blocks obtained by the first splitting method is identical to scan order of the blocks obtained by the second splitting method; and encodes the first block.
    Type: Application
    Filed: July 19, 2021
    Publication date: November 11, 2021
    Inventors: Kiyofumi ABE, Takahiro NISHI, Tadamasa TOMA, Ryuichi KANOH
  • Publication number: 20210352288
    Abstract: An encoder includes circuitry and memory coupled to the circuitry. The circuitry, in operation: partitions a block of a current image to be encoded into a plurality of partitions including a first partition and a second partition that are adjacent to each other; performs orthogonal transform only on the first partition out of the first partition and the second partition; and applies a deblocking filter to a boundary between the first partition and the second partition.
    Type: Application
    Filed: July 23, 2021
    Publication date: November 11, 2021
    Inventors: Tadamasa TOMA, Kiyofumi ABE, Yusuke KATO, Takahiro NISHI
  • Patent number: 11170818
    Abstract: A data transmission method according to one aspect of the present disclosure includes: generating a plurality of MPUs, reference clock time information, and leading clock time information indicating a leading PTS that is a clock time at which a leading access unit in the MPU is presented, transmitting the generated plurality of MPUs, reference clock time information, and leading clock time information, wherein the leading clock time information indicates the leading PTS of the plurality of MPUs of which presentation is started after the leading clock time information is transmitted in the generated plurality of MPUs, and each of the generated plurality of MPUs indicates a time point at which each access unit that does not exist in a head of the MPU is presented as a relative value to a time point of another access unit in the MPU.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: November 9, 2021
    Assignee: SUN PATENT TRUST
    Inventors: Tadamasa Toma, Noritaka Iguchi, Takahiro Nishi, Hisaya Katou
  • Patent number: 11172198
    Abstract: An encoder includes processing circuitry and a memory coupled to the processing circuitry. The processing circuitry is configured to: select a first filter for a first block based at least on a block size of the first block, the first filter including a first set of filter coefficients; select a second filter for a second block based at least on a block size of the second block, the second filter including a second set of filter coefficients; and change values of pixels in the first block and the second block to filter a boundary between the first block and the second block. The first set of filter coefficients applied in the first block and the second set of filter coefficients applied in the second block are selected to be asymmetrical with respect to the boundary based on the block size of the first block and the second block.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: November 9, 2021
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Ryuichi Kanoh, Takahiro Nishi, Tadamasa Toma
  • Patent number: 11172205
    Abstract: An image encoding method includes: determining respective decoding times of a plurality of pictures included in a motion picture such that decoding times of a plurality of lower layer picture which do not belong to a highest layer of a plurality of layers are spaced at regular intervals, and decoding timing for each of the plurality of lower layer pictures is identical between a case where the plurality of encoded pictures included in the motion picture are decoded and a case where only the plurality of lower layer pictures are decoded, encoding each of the plurality of pictures included in the motion picture in accordance with the encoding order according to the determined respective decoding times, and generating an encoded stream including the plurality of encoded pictures and the determined respective decoding times for the plurality of pictures.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: November 9, 2021
    Assignee: PANASONIC CORPORATION
    Inventors: Tadamasa Toma, Takahiro Nishi, Kengo Terada
  • Patent number: 11172201
    Abstract: An encoder includes circuitry and memory. Using the memory, the circuitry performs: deriving a plurality of reference samples positioned on a first line, for intra prediction; and generating a prediction image using the plurality of reference samples. The deriving includes interpolating a value on a second line perpendicular to the first line using values of encoded pixels on the second line to generate an interpolated value, and deriving one of the plurality of reference samples by projecting the interpolated value onto the first line.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: November 9, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Virginie Drugeon, Tadamasa Toma, Takahiro Nishi, Kiyofumi Abe, Ryuichi Kanoh
  • Publication number: 20210344906
    Abstract: An encoder is disclosed which includes circuitry and memory. Using the memory, the circuitry, in a first operating mode, derives first motion vectors for a first block obtained by splitting a picture, and generates a prediction image corresponding to the first block, with a bi-directional optical flow flag settable to true, and by referring to spatial gradients of luminance generated based on the first motion vectors. Using the memory, the circuitry, in a second operating mode, derives second motion vectors for a sub-block obtained by splitting a second block, the second block being obtained by splitting the picture, and generates a prediction image corresponding to the sub-block, with the bi-directional optical flow flag set to false.
    Type: Application
    Filed: July 13, 2021
    Publication date: November 4, 2021
    Inventors: Kiyofumi Abe, Takahiro Nishi, Tadamasa Toma, Ryuichi Kanoh
  • Publication number: 20210344956
    Abstract: An encoder capable of properly handling an image to be encoded or decoded includes processing circuitry and memory connected to the processing circuitry. Using the memory, the processing circuitry: obtains parameters including at least one of (i) one or more parameters related to a first process for correcting distortion in an image captured with a wide angle lens and (ii) one or more parameters related to a second process for stitching a plurality of images; generates an encoded image by encoding a current image to be processed that is based on the image or the plurality of images; and writes the parameters into a bitstream including the encoded image.
    Type: Application
    Filed: July 12, 2021
    Publication date: November 4, 2021
    Inventors: Chong Soon LIM, Han Boon TEO, Takahiro NISHI, Tadamasa TOMA, Ru Ling LIAO, Sughosh Pavan SHASHIDHAR, Hai Wei SUN
  • Publication number: 20210345000
    Abstract: According to one aspect of the present disclosure, a transmission method for enabling transmission of content using a broadcast and a communication channel includes: transmitting playback control information and service information using at least the broadcast wave, the service information being information for playing back content transmission using the broadcast and content transmission using the communication channel when the content is transmitted using the broadcast and the communication channel. The service information includes attribute information indicating that the first content data and the second content data constitute the content and location information that indicates a location for acquiring meta-information on playback control of the second content. The playback control information includes indexes of a relationship between the first content data and the second content data.
    Type: Application
    Filed: July 14, 2021
    Publication date: November 4, 2021
    Inventors: Tadamasa TOMA, Noritaka IGUCHI, Takahiro NISHI, Hisaya KATOU
  • Publication number: 20210344958
    Abstract: An encoder capable of properly handling an image to be encoded or decoded includes processing circuitry and memory connected to the processing circuitry. Using the memory, the processing circuitry: obtains parameters including at least one of (i) one or more parameters related to a first process for correcting distortion in an image captured with a wide angle lens and (ii) one or more parameters related to a second process for stitching a plurality of images; generates an encoded image by encoding a current image to be processed that is based on the image or the plurality of images; and writes the parameters into a bitstream including the encoded image.
    Type: Application
    Filed: July 12, 2021
    Publication date: November 4, 2021
    Inventors: Chong Soon LIM, Han Boon TEO, Takahiro NISHI, Tadamasa TOMA, Ru Ling LIAO, Sughosh Pavan SHASHIDHAR, Hai Wei SUN