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.

公开(公告)号：US11202093B2

公开(公告)日：2021-12-14

申请号：US16654668

申请日：2019-10-16

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/573 ,  H04N19/176 ,  H04N19/52

Abstract: An encoder includes memory and circuitry. The circuitry (i) encodes first control information indicating one mode, (ii) encodes second control information indicating whether it is possible to perform the motion compensation in a unit of a sub-block, (iii) derives the motion vector of the block in the one mode, (iv) determines whether to perform the motion compensation in the unit of the sub-block or the motion compensation in a unit of the block, (v) derives a motion vector of the sub-block and performs the motion compensation in the unit of the sub-block using the motion vector of the sub-block when determining to perform the motion compensation in the unit of the sub-block, and (vi) performs the motion compensation in the unit of the block using the motion vector of the block when determining to perform the motion compensation in the unit of the block.

公开(公告)号：US11197030B2

公开(公告)日：2021-12-07

申请号：US16988231

申请日：2020-08-07

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Jing Ya Li ,  Han Boon Teo ,  Chong Soon Lim ,  Hai Wei Sun ,  Che-Wei Kuo ,  Chu Tong Wang ,  Tadamasa Toma ,  Takahiro Nishi ,  Kiyofumi Abe ,  Yusuke Kato

IPC: H04N19/82 ,  H04N19/107 ,  H04N19/186 ,  H04N19/176

Abstract: A decoder includes circuitry and memory coupled to the circuitry. The circuitry, in operation, generates a first coefficient value by applying a CCALF (cross component adaptive loop filtering) process to a first reconstructed image sample of a luma component, and clips the first coefficient value. The circuitry generates a second coefficient value by applying an ALF (adaptive loop filtering) process to a second reconstructed image sample of a chroma component, and clips the second coefficient value. The circuitry generates a third coefficient value by adding the clipped first coefficient value to the clipped second coefficient value, and decodes a third reconstructed image sample of the chroma component using the third coefficient value.

公开(公告)号：US11184612B2

公开(公告)日：2021-11-23

申请号：US16023538

申请日：2018-06-29

Applicant: Panasonic Intellectual Property Corporation of America

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

IPC: H04N19/61 ,  H04N19/176 ,  H04N19/122 ,  H04N19/60 ,  H04N19/12 ,  H04N19/65 ,  H04N19/46 ,  H04N19/14 ,  H04N19/147 ,  H04N19/119

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.