公开(公告)号：US11368709B2

公开(公告)日：2022-06-21

申请号：US16801797

申请日：2020-02-26

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/593 ,  H04N19/157 ,  H04N19/105 ,  H04N19/513 ,  H04N19/176 ,  H04N19/182 ,  H04N19/196

Abstract: An encoder is an encoder that encodes a block in a picture using a prediction image of the block, and includes circuitry and memory. Using the memory, the circuitry: calculates a first average pixel value which is an average pixel value of first reference samples out of the first reference samples and second reference samples, The first reference samples are referable and located outside the block and adjacent to a first side of the block. The second reference samples are referable and located outside the block and adjacent to a second side of the block. When generating the prediction image, the circuitry applies the same prediction pixel value to inner samples among current samples to be processed that are included in the block. The inner samples constitute a quadrilateral region including at least two current samples in each of a horizontal direction and a vertical direction.

公开(公告)号：US11368686B2

公开(公告)日：2022-06-21

申请号：US17194781

申请日：2021-03-08

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Tadamasa Toma ,  Takahiro Nishi ,  Kiyofumi Abe

IPC: H04N19/105 ,  H04N19/117 ,  H04N19/82 ,  H04N19/52 ,  H04N19/174 ,  H04N19/119 ,  H04N19/159

Abstract: An encoder includes circuitry and memory connected to the circuitry. The circuitry, in operation: splits one picture included in pictures into areas, intra encodes the entirety of an area among the areas; and switches areas to be intra encoded for each picture included in the pictures. In at least one of (i) generation of a reference pixel in inter prediction or (ii) loop filtering, only pixels in the area intra encoded or pixels in an area which precedes the area intra encoded in coding order are used among pixels included in the pictures.

公开(公告)号：US11350091B2

公开(公告)日：2022-05-31

申请号：US16833174

申请日：2020-03-27

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Chong Soon Lim ,  Hai Wei Sun ,  Sughosh Pavan Shashidhar ,  Han Boon Teo ,  Ru Ling Liao ,  Takahiro Nishi ,  Tadamasa Toma

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/50 ,  H04N19/60

Abstract: An encoder according to one aspect of the present disclosure encodes a block of an image, and includes a processor and memory connected to the processor. Using the memory, the processor partitions a block into a plurality of sub blocks and encodes a sub block included in the plurality of sub blocks in an encoding process including at least a transform process or a prediction process. The block is partitioned using a multiple partition including at least three odd-numbered child nodes and each of a width and a height of each of the plurality of sub blocks is a power of two.

公开(公告)号：US11336951B2

公开(公告)日：2022-05-17

申请号：US17158151

申请日：2021-01-26

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Peter Klenner ,  Frank Herrmann ,  Tadamasa Toma

IPC: G06F3/00 ,  G06F13/00 ,  H04N5/445 ,  H04N21/438 ,  H04N21/238

Abstract: A client receives streaming data according to Moving Picture Experts Group-Dynamic Adaptive Streaming over HTTP (MPEG-DASH) standard. The client includes a transmitter which transmits a Media Presentation Description (MPD) request or a segment request to a server, and a receiver which receives an MPD specified in the MPD request and a segment specified in the segment request. The MPD request contains information requesting transmission of an initialization segment by a push. The receiver receives the initialization segment transmitted by the push.

公开(公告)号：US11335382B2

公开(公告)日：2022-05-17

申请号：US17038753

申请日：2020-09-30

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Hiroshi Yahata ,  Tadamasa Toma ,  Tomoki Ogawa

IPC: H04N19/70 ,  H04N19/44 ,  H04N19/46 ,  G11B27/28 ,  G11B20/10 ,  H04N5/84 ,  H04N9/804 ,  H04N9/82 ,  G11B27/10 ,  G11B27/32 ,  H04N5/85 ,  H04N7/015 ,  H04N9/87

Abstract: A decoding system decodes a video stream, which is encoded video information. The decoding system includes an attribute information acquirer that acquires first attribute information, indicating whether a dynamic range of luminance of the video stream is a first dynamic range or a second dynamic range that is wider than the first dynamic range, and a decoder that acquires the video steam and generates decoded video information. The decoding system also includes an outputter that, in a case where the first attribute information indicates the second dynamic range, outputs the decoded video information and maximum luminance information indicating a maximum luminance of the video stream in accordance with the second dynamic range. Further, in other cases, the outputter outputs the decoded video information and maximum luminance information indicating the maximum luminance of all pictures in the video stream.

公开(公告)号：US11328748B2

公开(公告)日：2022-05-10

申请号：US16748185

申请日：2020-01-21

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Hiroshi Yahata ,  Tadamasa Toma

IPC: G11B20/10 ,  G11B27/32 ,  H04N5/85 ,  G11B27/10 ,  H04N9/804 ,  H04N9/82 ,  H04N5/93 ,  H04N9/87

Abstract: A recording medium includes a video stream of a standard-luminance range and a video stream of high-luminance range, which are used selectively in accordance with a playback environment. The recording medium also includes a subtitle stream of the standard-luminance range and a subtitle stream of the high-luminance range, which are used selectively in accordance with the playback environment. A playlist file includes a management region where playback control information relating to a main stream is stored, and includes an extended region. The management region stores first playback control information specifying playing of the video stream of the high-luminance range and the subtitle stream of the high-luminance range in combination. The extended region stores second playback control information specifying playing of the video stream of the standard-luminance range and the subtitle stream of the standard-luminance range in combination.

公开(公告)号：US11310491B2

公开(公告)日：2022-04-19

申请号：US17017976

申请日：2020-09-11

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

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.

公开(公告)号：US11284142B2

公开(公告)日：2022-03-22

申请号：US17134877

申请日：2020-12-28

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N21/242 ,  H04N21/44 ,  H04H60/13 ,  H04N21/43 ,  H04N21/462 ,  H04N21/61 ,  H04N21/8547 ,  H04H20/18

Abstract: According to one aspect of the present disclosure, a reception method in broadcast and broadband cooperation service, the reception method includes: receiving broadcast content transmitted through broadcast; receiving acquisition information through the broadcast, the acquisition information being information used to play back broadband content transmitted through broadband while the broadband content is synchronized with the received broadcast content, the acquisition information being information relating to acquisition of the broadband content; and acquiring the broadband content based on the received acquisition information. Therefore, the broadband content can properly be acquired in response to the reception of the broadcast content.

公开(公告)号：US11259022B2

公开(公告)日：2022-02-22

申请号：US17069428

申请日：2020-10-13

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/124 ,  H04N19/12 ,  H04N19/176 ,  H04N19/61 ,  H04N19/625

Abstract: An encoder that encodes a current block in a picture includes circuitry and a memory coupled to the circuitry. The circuitry, in operation: selects at least one transform basis from among candidates for a transform basis which include a basis of a type-II discrete cosine transform (DCT-II) and at least one of a basis of a type-IV discrete cosine transform (DCT-IV) or a basis of a type-IV discrete sine transform (DST-IV); and transforms prediction error values of the current block, using the at least one transform basis selected. When the size of the current block is greater than a threshold size, the circuitry selects at least one transform basis after excluding at least one of the basis of the DCT-IV or the basis of the DST-IV from the candidates. The threshold size is at most half a maximum size to which the DCT-II is applicable.

公开(公告)号：US11223835B2

公开(公告)日：2022-01-11

申请号：US17077450

申请日：2020-10-22

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： 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

IPC: H04N19/176 ,  H04N19/105 ,  H04N19/52 ,  H04N19/70

Abstract: An encoder, includes: circuitry; and memory. Using the memory, the circuitry: in inter prediction for a current block, determines a base motion vector, and writes, in an encoded signal, a delta motion vector representing (i) one direction among a plurality of directions including a diagonal direction and (ii) a distance from the base motion vector; and encodes the current block using the delta motion vector and the base motion vector as a motion vector of the current block.