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).

  • MOVING PICTURE CODING METHOD, MOVING PICTURE CODING APPARATUS, MOVING PICTURE DECODING METHOD, MOVING PICTURE DECODING APPARATUS, AND MOVING PICTURE CODING AND DECODING APPARATUS
    Publication number: 20230328254
    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: May 31, 2023
    Publication date: October 12, 2023
    Inventors: Toshiyasu SUGIO, Takahiro NISHI, Youji SHIBAHARA, Kyoko TANIKAWA, Hisao SASAI, Toru MATSUNOBU, Kengo TERADA
  • Encoder, decoder, encoding method, and decoding method
    Patent number: 11785209
    Abstract: An encoder includes memory and circuitry. The circuitry, using the memory, (i) selects a mode from among a plurality of modes each for deriving a motion vector, and derives a motion vector for a current block via the selected mode, and (ii) performs inter prediction encoding on the current block, using the derived motion vector, via one of a skip mode and a non-skip mode different from the skip mode. The plurality of modes include a plurality of first modes each for predicting the motion vector for the current block based on an encoded block neighboring the current block without encoding information indicating a motion vector into a stream. When a second mode included in the plurality of first modes is selected, the current block is encoded via the non-skip mode regardless of presence or absence of a residual coefficient.
    Type: Grant
    Filed: March 14, 2022
    Date of Patent: October 10, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Kiyofumi Abe, Takahiro Nishi, Tadamasa Toma, Ryuichi Kanoh
  • Encoder, decoder, encoding method, and decoding method
    Patent number: 11785243
    Abstract: An encoder includes: circuitry; and memory coupled to the circuitry. In operation, the circuitry: derives a base motion vector to be used in predicting a current block to be encoded; derives a first motion vector different from the base motion vector; derives a motion vector difference based on a difference between the base motion vector and the first motion vector; determines whether the motion vector difference is greater than a threshold; modifies the first motion vector when the motion vector difference is determined to be greater than the threshold, and does not modify the first motion vector when the motion vector difference is determined not to be greater than the threshold; and encodes the current block using the first motion vector modified or the first motion vector not modified.
    Type: Grant
    Filed: November 19, 2021
    Date of Patent: October 10, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Jing Ya Li, Chong Soon Lim, Ru Ling Liao, Hai Wei Sun, Han Boon Teo, Kiyofumi Abe, Tadamasa Toma, Takahiro Nishi
  • Image coding method, image decoding method, image coding apparatus, receiving apparatus, and transmitting apparatus
    Patent number: 11785231
    Abstract: An image coding method of hierarchically coding a plurality of pictures to generate a bitstream, includes: coding each of the plurality of pictures, which belongs to any one of a plurality of hierarchical layers, with reference to a picture belonging to a hierarchical layer which is same as or lower than a hierarchical layer to which the picture belongs, and without reference to a picture belonging to a hierarchical layer which is higher than the hierarchical layer to which the picture belongs; and generating the bitstream by coding the coded pictures and time information indicating decoding times of the coded pictures. The time information indicates that the decoding times are set at equal intervals for low-layer pictures which are the plurality of pictures other than highest-layer pictures belonging to a highest layer among the plurality of hierarchical layers.
    Type: Grant
    Filed: March 29, 2023
    Date of Patent: October 10, 2023
    Assignee: SUN PATENT TRUST
    Inventors: Kengo Terada, Takahiro Nishi, Hisao Sasai
  • TRANSMISSION METHOD, RECEPTION METHOD, TRANSMISSION DEVICE, AND RECEPTION DEVICE
    Publication number: 20230319355
    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 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: June 7, 2023
    Publication date: October 5, 2023
    Inventors: Tadamasa TOMA, Noritaka IGUCHI, Takahiro NISHI, Hisaya KATOU
  • SYSTEM AND METHOD FOR VIDEO CODING
    Publication number: 20230319300
    Abstract: An image decoder has circuitry coupled to a memory. The circuitry splits a current image block into a plurality of partitions. The circuitry predicts a first motion vector from a set of uni-prediction motion vector candidates for a first partition of the plurality of partitions, and decodes the first partition using the first motion vector.
    Type: Application
    Filed: June 8, 2023
    Publication date: October 5, 2023
    Inventors: Chong Soon LIM, Sughosh Pavan SHASHIDHAR, Ru Ling LIAO, Hai Wei SUN, Han Boon TEO, Jing Ya LI, Kiyofumi ABE, Tadamasa TOMA, Takahiro NISHI
  • Encoder, decoder, encoding method, and decoding method
    Patent number: 11778178
    Abstract: An encoding method includes: changing values of luma pixels in a first block and a second block to filter a first boundary between the first block and the second block, using clipping such that change amounts of the respective values are within respective luma clip widths, the luma pixels in the first block and the second block being arranged along a first line across the first boundary; and changing values of chroma pixels in a third block and a fourth block to filter a second boundary between the third block and the fourth block, using clipping such that change amounts of the respective values are within respective chroma clip widths, the chroma pixels in the third block and the fourth block being arranged along a second line across the second boundary. The luma clip widths applied to the luma pixels are selected to be asymmetrical relative to the first boundary.
    Type: Grant
    Filed: May 3, 2022
    Date of Patent: October 3, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Ryuichi Kanoh, Takahiro Nishi, Tadamasa Toma
  • Encoder, decoder, encoding method, and decoding method using bi-directional optical flow with horizontal and vertical gradients for prediction
    Patent number: 11778203
    Abstract: An encoder includes circuitry and memory connected to the circuitry. The circuitry: derives an absolute value of a sum of gradient values in first and second ranges; derives, as a first parameter, a total sum of absolute values of sums of gradient values derived respectively for pairs of relative pixel positions; derives a pixel difference value between pixel values in the first and second ranges; inverts or maintains a plus or minus sign of the pixel difference value, according to a plus or minus sign of the sum of the gradient values indicating the sum of the gradient values in the first and second ranges; derives, as a second parameter, a total sum of pixel difference values each having the plus or minus sign inverted or maintained, the pixel difference values derived respectively for the relative pixel positions; and generates a prediction image using the first and second parameters.
    Type: Grant
    Filed: April 22, 2022
    Date of Patent: October 3, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Jing Ya Li, Ru Ling Liao, Chong Soon Lim, Han Boon Teo, Hai Wei Sun, Kiyofumi Abe, Takahiro Nishi, Tadamasa Toma
  • Image coding method, image decoding method, image coding apparatus, receiving apparatus, and transmitting apparatus
    Patent number: 11778208
    Abstract: An image coding method of hierarchically coding a plurality of pictures to generate a bitstream, includes: coding each of the plurality of pictures, which belongs to any one of a plurality of hierarchical layers, with reference to a picture belonging to a hierarchical layer which is same as or lower than a hierarchical layer to which the picture belongs, and without reference to a picture belonging to a hierarchical layer which is higher than the hierarchical layer to which the picture belongs; and generating the bitstream by coding the coded pictures and time information indicating decoding times of the coded pictures. The time information indicates that the decoding times are set at equal intervals for low-layer pictures which are the plurality of pictures other than highest-layer pictures belonging to a highest layer among the plurality of hierarchical layers.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: October 3, 2023
    Assignee: SUN PATENT TRUST
    Inventors: Kengo Terada, Takahiro Nishi, Hisao Sasai
  • Encoder, decoder, encoding method, and decoding method
    Patent number: 11778227
    Abstract: An encoder includes circuitry and memory connected to the circuitry. In operation, the circuitry: derives an average value of motion vector values of two prediction candidates in a prediction candidate list for a merge mode, and registers the average value derived as new motion vector information of a new prediction candidate into the prediction candidate list; and derives new correction processing information regarding correction processing of a prediction image, and registers the new correction processing information derived into the prediction candidate list in association with the new motion vector information.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: October 3, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Kiyofumi Abe, Takahiro Nishi, Tadamasa Toma
  • Encoder, decoder, and related non-transitory computer readable medium
    Patent number: 11778180
    Abstract: Various embodiments provide a decoder configured to select a filter based on a block size of a first block and a block size of a second block in an image, and change values of pixels in the first block and the second block. The filter includes a first set of multipliers and a first set of offsets for the first block, and a second set of multipliers and a second set of offsets for the second block. The values of the pixels in the first block and the second block are changed by performing multiplication with each multiplier in the first set of multipliers, by performing multiplication with each multiplier in the second set of multipliers, and by using the first set of offsets and the second set of offsets.
    Type: Grant
    Filed: December 12, 2022
    Date of Patent: October 3, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Ryuichi Kanoh, Takahiro Nishi, Tadamasa Toma
  • Encoder, decoder, encoding method, and decoding method
    Patent number: 11778207
    Abstract: An encoder includes circuitry and memory. The circuitry, using the memory: derives a one-dimensional array of a plurality of reference samples for intra prediction; performs smoothing on the one-dimensional array of the plurality of reference samples which has been derived; and generates a prediction image using the plurality of reference samples. In deriving the one-dimensional array, the circuitry projects a value of at least one decoded pixel located on a first line onto a second line perpendicular to the first line, to derive at least one of the plurality of reference samples, and the smoothing is performed on the at least one decoded pixel projected onto the second line.
    Type: Grant
    Filed: May 26, 2022
    Date of Patent: October 3, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Virginie Drugeon, Tadamasa Toma, Takahiro Nishi, Kiyofumi Abe, Ryuichi Kanoh
  • DATA GENERATION METHOD, DATA REPRODUCTION METHOD, DATA GENERATION DEVICE AND DATA REPRODUCTION DEVICE
    Publication number: 20230308690
    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: Application
    Filed: May 31, 2023
    Publication date: September 28, 2023
    Inventors: Virginie DRUGEON, Takahiro NISHI, Tadamasa TOMA
  • CONTROL METHOD, COMPUTER PROGRAM PRODUCT, AND STORAGE MEDIUM
    Publication number: 20230306092
    Abstract: A control method according to the present disclosure is a control method in a first computer configured to access a database managing information on vehicles and electronic keys. The control method includes receiving, from a terminal of a user, authentication information including an electronic key and an identification for a vehicle; after determining that the authentication information is valid, transmitting, to the vehicle, a signal indicating that the user is permitted to use the vehicle; after the user starts using the vehicle, acquiring use information indicating a status of use of the vehicle from the vehicle; transmitting, when the electronic key is a company key correlated with a business entity, at least a part of the use information to a second computer related to the business entity; and not transmitting the use information when the electronic key is a personal key of the user.
    Type: Application
    Filed: March 15, 2023
    Publication date: September 28, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hiroshi Yahata, Tomoyuki Hirota, Takahiro Nishi, Tadamasa Toma, Toshiyasu Sugio
  • ENCODER, DECODER, ENCODING METHOD, AND DECODING METHOD
    Publication number: 20230308649
    Abstract: An encoder includes circuitry and memory coupled to the circuitry. In operation, the circuitry: performs quantization on a plurality of transform coefficients of a current block to be encoded, using a quantization matrix when orthogonal transform is performed on the current block and secondary transform is not performed on the current block; and performs quantization on the plurality of transform coefficients of the current block without using the quantization matrix when orthogonal transform is not performed on the current block and when both orthogonal transform and secondary transform are performed on the current block.
    Type: Application
    Filed: May 2, 2023
    Publication date: September 28, 2023
    Inventors: Tadamasa TOMA, Takahiro NISHI, Kiyofumi ABE, Yusuke KATO
  • CONTROL METHOD AND CONTROL DEVICE
    Publication number: 20230302990
    Abstract: According to the present disclosure, a control method of a vehicle including a communication circuit capable of communicating with a computer via a network includes: acquiring, from the computer via the communication circuit, first reservation information including first boarding area information indicating a first boarding area, first seat information indicating a first seat, and first color information indicating a first color; causing the vehicle to travel to the first boarding area based on the first boarding area information; and causing, in the first boarding area, at least two lighting devices to emit light of the first color based on the first color information, the at least two lighting devices being selected from a group consisting of a first door light indicating a first door, a first seat light indicating the first seat, and a first baggage light indicating an installation position or a lock.
    Type: Application
    Filed: March 20, 2023
    Publication date: September 28, 2023
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hiroshi YAHATA, Tomoyuki HIROTA, Takahiro NISHI, Tadamasa TOMA, Toshiyasu SUGIO
  • ENCODER, DECODER, ENCODING METHOD, AND DECODING METHOD
    Publication number: 20230308692
    Abstract: An image encoder performs a first partitioning including using a first partition mode, without writing first splitting information indicative of the first partition mode into a bitstream, to split a first block into a plurality of second blocks in response to that the first block is located adjacent to an edge of a picture and that the dimensions of the first block satisfy a first condition; and performs a second partitioning on the second block by writing second splitting information indicative of a second partition mode into the bitstream, wherein the second partition mode allows at least one of a quad tree splitting and a binary splitting, and using the second partition mode to split the second block into a plurality of coding units (CUs), wherein the second partition mode prohibits the quad tree splitting of the second block in certain conditions.
    Type: Application
    Filed: May 30, 2023
    Publication date: September 28, 2023
    Inventors: Ryuichi KANOH, Kiyofumi ABE, Takahiro NISHI, Tadamasa TOMA
  • Transmitting method, receiving method, transmitting apparatus, and receiving apparatus
    Patent number: 11770577
    Abstract: A transmitting method according to one aspect of the present disclosure includes transmitting video control information for reproduction of video data having an individually reproducible unit, transmitting the video data, determining a transmission order of audio control information for reproduction of audio data in a reproduction interval corresponding to a reproduction interval of the video data in such a way that the audio control information is transmitted after the video control information, and transmitting the audio control information according to the determined transmission order, and transmitting the audio data. Thus, in the receiving apparatus, a delay time from reception of data to reproduction of video and audio is shortened.
    Type: Grant
    Filed: June 14, 2021
    Date of Patent: September 26, 2023
    Assignee: SUN PATENT TRUST
    Inventors: Tadamasa Toma, Noritaka Iguchi, Takahiro Nishi, Hisaya Katou
  • Image coding method, image decoding method, image coding apparatus, image decoding apparatus, and image coding and decoding apparatus
    Patent number: 11770536
    Abstract: An image coding method comprising: obtaining current signals to be coded of each of the processing units of the image; generating a binary signal by performing binarization on each of the current signals to be coded; selecting a context for each of the current signals to be coded from among a plurality of contexts; performing arithmetic coding of the binary signal by using coded probability information associated with the context selected in the selecting; and updating the coded probability information based on the binary signal, wherein, in the selecting, the context for the current signal to be coded is selected, as a shared context, for a signal which is included in one of a plurality of processing units and has a size different from a size of the processing unit including the current signal to be coded.
    Type: Grant
    Filed: April 29, 2022
    Date of Patent: September 26, 2023
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio
  • Encoder, decoder, encoding method, and decoding method
    Patent number: 11770561
    Abstract: Provided is an encoder including: circuitry; and memory coupled to the circuitry. In operation, the circuitry: performs a mapping process of Luma Mapping with Chroma Scaling (LMCS) for transforming a first pixel value space applied to a luma display image signal into a second pixel value space applied to a luma encoding process signal, using line segments forming a transform curve, each of which corresponds to a different one of sections obtained by partitioning the first pixel value space; and encodes an image, and in the performing of the LMCS, the circuitry determines the transform curve so that among boundary values in the second pixel value space, a first value obtained by dividing a boundary value by a base width defined according to a bit depth of the image is not equal to a second value obtained by dividing another boundary value by the base width.
    Type: Grant
    Filed: October 24, 2022
    Date of Patent: September 26, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Masato Ohkawa, Hideo Saitou, Kiyofumi Abe, Takahiro Nishi, Tadamasa Toma, Yusuke Kato