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    Transmitting method of transmitting hierarchically encoded data
    381.
    发明授权
    Transmitting method of transmitting hierarchically encoded data 有权

    公开(公告)号：US11206436B2

    公开(公告)日：2021-12-21

    申请号：US14941583

    申请日：2015-11-14

    Applicant: Panasonic Intellectual Property Corporation of America

    Inventor： Noritaka Iguchi ,  Tadamasa Toma ,  Takahiro Nishi ,  Hisaya Katou

    IPC: H04N21/236 ,  H04N21/6332 ,  H04N21/854

    Abstract: A transmitting method for transmitting encoded data obtained by hierarchically encoding a video image, includes: a generating step of generating an encoded stream including a packet which is obtained by packetizing the encoded data and to which at least a different packet ID has been allocated according to a layer level of the encoded data, and information indicating an association relationship between the packet ID and the layer level; and a transmitting step of transmitting the generated encoded stream, and the generated information indicating the association relationship. Thus, there is provided the encoded data transmitting method which allows a reception side to easily select encoded data which is hierarchically encoded.

    Encoder, decoder, encoding method, and decoding method
    384.
    发明授权
    Encoder, decoder, encoding method, and decoding method 有权

    公开(公告)号：US11166025B2

    公开(公告)日：2021-11-02

    申请号：US17037385

    申请日：2020-09-29

    Applicant: Panasonic Intellectual Property Corporation of America

    Inventor： Kiyofumi Abe ,  Ryuichi Kanoh ,  Takahiro Nishi ,  Tadamasa Toma

    IPC: H04N19/126 ,  H04N19/94 ,  H04N19/105 ,  H04N19/119 ,  H04N19/30 ,  H04N19/176

    Abstract: Various embodiments provide an encoder that generates a first quantization matrix including a plurality of matrix elements; generates, using the first quantization matrix, a subset of the first quantization matrix including only a subset of matrix elements of the plurality of matrix elements; and quantizes, using the subset of matrix elements included in the subset of the first quantization matrix, transform coefficients of a current block. Each of the subset of matrix elements and each of the transform coefficients has an x-coordinate value that is less than a threshold x-coordinate value, a y-coordinate value that is less than a threshold y-coordinate value, or an x-coordinate value that is less than the threshold x-coordinate value and a y-coordinate value that is less than the threshold y-coordinate value.

    Encoder, encoding method, decoder, and decoding method
    388.
    发明授权
    Encoder, encoding method, decoder, and decoding method 有权

    公开(公告)号：US11102489B2

    公开(公告)日：2021-08-24

    申请号：US16697534

    申请日：2019-11-27

    Applicant: Panasonic Intellectual Property Corporation of America

    Inventor： Masato Ohkawa ,  Hideo Saitou ,  Tadamasa Toma ,  Takahiro Nishi ,  Kiyofumi Abe ,  Ryuichi Kanoh

    IPC: H04N19/625 ,  H04N19/159 ,  H04N19/12 ,  H04N19/176 ,  H04N19/61

    Abstract: When intra prediction is to be used, an encoder determines whether an adaptive basis selection mode is to be used and whether a size of the current block matches a determined size. When the adaptive basis selection mode is to be used and the size matches the determined size, the encoder fixes the first transform basis for the current block to a first determined transform basis in the adaptive basis selection mode, and generates first transform coefficients by performing first transform of residual signals of the current block using the first determined transform basis; quantizes the first transform coefficients when an intra prediction mode for the current block is a determined mode; and generates second transform coefficients by performing second transform of the first transform coefficients using a second transform basis, and quantizes the second transform coefficients, when the intra prediction mode is not the determined mode.

    Encoder, decoder, encoding method, and decoding method
    389.
    发明授权
    Encoder, decoder, encoding method, and decoding method 有权

    公开(公告)号：US11095909B2

    公开(公告)日：2021-08-17

    申请号：US16449685

    申请日：2019-06-24

    Applicant: Panasonic Intellectual Property Corporation of America

    Inventor： Kiyofumi Abe ,  Takahiro Nishi ,  Tadamasa Toma

    IPC: H04N19/176 ,  H04N19/105 ,  H04N19/423 ,  H04N19/517

    Abstract: An encoder includes circuitry and memory. Using the memory, the circuitry performs prediction on an image. A motion vector predictor list used in the prediction includes a spatially neighboring motion vector predictor obtained from a block spatially neighboring a current block, and a spatially broad motion vector predictor obtained from a block positioned at any of a plurality of predetermined positions in a second range that is broader than a first range that spatially neighbors the current block. The plurality of predetermined positions are defined by a regular interval using the top-left of a current picture as a reference point.

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