公开(公告)号：US20240357194A1

公开(公告)日：2024-10-24

申请号：US18638606

申请日：2024-04-17

申请人： MediaTek Inc.

发明人： Xin Wang ,  Lulin Chen

IPC分类号： H04N21/266 ,  H04N21/235 ,  H04N21/435 ,  H04N21/462

CPC分类号： H04N21/26603 ,  H04N21/2353 ,  H04N21/435 ,  H04N21/462

摘要： A method of delivering media content, where a streaming server provides a media content to a streaming client. The media content includes multiple media tracks. A first group of entities is specified for the media content. Each entity in the first group of entities is a media track, an item, or a child group of entities. A first data structure is populated to specify one or more arrays of entity identifiers for the first group of entities. Each array of entity identifiers has one or more identifiers of the entities in the first group. Each array of entity identifiers is associated with one reference type that describes the entities identified by the array of entity identifiers. The first data structure is provided to the streaming client, which provides entities of the first group from the media content for playback according to the first data structure.

公开(公告)号：US10805620B2

公开(公告)日：2020-10-13

申请号：US15865916

申请日：2018-01-09

申请人： MEDIATEK INC.

发明人： Xin Wang ,  Wang Lin Lai ,  Lulin Chen ,  Shan Liu

IPC分类号： H04N19/169 ,  H04N19/167 ,  H04N19/136 ,  H04N19/70 ,  H04N21/81 ,  H04N21/854 ,  H04N21/234 ,  H04N19/103

摘要： Aspects of the disclosure provide a method and an apparatus for deriving composite tracks. The disclosed apparatus includes a processing circuitry. The processing circuitry is configured to generate a file that includes elementary track boxes respectively for elementary tracks. The elementary track box indexes a sequence of media samples in a time order that forms an elementary track. The processing circuitry is configured to construct a composite track box for a composite track. The composite track box identifies one or more elementary tracks, and a composite operation to form the composite track based on the one or more elementary tracks. The processing circuitry is further configured to generate a media presentation based on the composite track.

公开(公告)号：US10778993B2

公开(公告)日：2020-09-15

申请号：US16014856

申请日：2018-06-21

申请人： MediaTek Inc.

发明人： Xin Wang ,  Lulin Chen ,  Shuai Zhao

IPC分类号： H04N13/00 ,  H04N19/169 ,  H04N19/33 ,  H04N19/89 ,  H04N19/31 ,  H04N21/2343 ,  H04N21/4223 ,  H04N19/503 ,  H04N19/88 ,  H04N19/597 ,  H04N21/81 ,  H04N9/47

摘要： The techniques described herein relate to methods, apparatus, and computer readable media configured to derive a composite track. Three-dimensional video data includes a plurality of two-dimensional sub-picture tracks associated with a viewport. A composite track derivation for composing the plurality of two-dimensional sub-picture tracks for the viewport includes data indicative of the plurality of two-dimensional sub-picture tracks belonging to a same group, placement information to compose sample images from the plurality of two-dimensional tracks into a canvas associated with the viewport, and a composition layout operation to adjust the composition if the canvas comprises a composition layout created by two or more of the plurality of two-dimensional sub-picture tracks composed on the canvas. The composite track derivation can be encoded and/or used to decode the three-dimensional video data.

公开(公告)号：US10602239B2

公开(公告)日：2020-03-24

申请号：US15928823

申请日：2018-03-22

申请人： MEDIATEK INC.

发明人： Lulin Chen ,  Xin Wang ,  Shuai Zhao ,  Wang Lin Lai

IPC分类号： H04N21/854 ,  G06F16/78 ,  H04N5/265 ,  H04N5/262 ,  H04N5/272 ,  G11B27/031 ,  H04N21/431

摘要： Aspects of the disclosure provide an apparatus that includes interface circuitry and processing circuitry. The interface circuitry is configured to receive signals carrying metadata for visual track composition from multiple visual tracks. The visual track composition includes alpha compositing, and can include spatial compositing and background compositing. The processing circuitry is configured to parse the metadata to extract configuration information for the visual track composition. Further, the processing circuitry receives a first sample from a first visual track and a second sample from a second visual track, and combines the first sample with the second sample to generate a composite sample based on the configuration information for the visual track composition.

公开(公告)号：US20180376152A1

公开(公告)日：2018-12-27

申请号：US16014856

申请日：2018-06-21

申请人： MediaTek Inc.

发明人： Xin Wang ,  Lulin Chen ,  Shuai Zhao

IPC分类号： H04N19/169 ,  H04N19/33 ,  H04N19/89 ,  H04N19/503 ,  H04N21/2343 ,  H04N21/4223 ,  H04N19/31

摘要： The techniques described herein relate to methods, apparatus, and computer readable media configured to derive a composite track. Three-dimensional video data includes a plurality of two-dimensional sub-picture tracks associated with a viewport. A composite track derivation for composing the plurality of two-dimensional sub-picture tracks for the viewport includes data indicative of the plurality of two-dimensional sub-picture tracks belonging to a same group, placement information to compose sample images from the plurality of two-dimensional tracks into a canvas associated with the viewport, and a composition layout operation to adjust the composition if the canvas comprises a composition layout created by two or more of the plurality of two-dimensional sub-picture tracks composed on the canvas. The composite track derivation can be encoded and/or used to decode the three-dimensional video data.

公开(公告)号：US20180199044A1

公开(公告)日：2018-07-12

申请号：US15865916

申请日：2018-01-09

申请人： MEDIATEK INC.

发明人： Xin Wang ,  Wang Lin Lai ,  Lulin Chen ,  Shan Liu

IPC分类号： H04N19/169 ,  H04N19/167 ,  H04N19/70 ,  H04N19/136

摘要： Aspects of the disclosure provide a method and an apparatus for deriving composite tracks. The disclosed apparatus includes a processing circuitry. The processing circuitry is configured to generate a file that includes elementary track boxes respectively for elementary tracks. The elementary track box indexes a sequence of media samples in a time order that forms an elementary track. The processing circuitry is configured to construct a composite track box for a composite track. The composite track box identifies one or more elementary tracks, and a composite operation to form the composite track based on the one or more elementary tracks. The processing circuitry is further configured to generate a media presentation based on the composite track.

公开(公告)号：US20240129561A1

公开(公告)日：2024-04-18

申请号：US18371507

申请日：2023-09-22

申请人： MEDIATEK INC.

发明人： Xin Wang ,  Lulin Chen

IPC分类号： H04N21/2343 ,  G06F3/01 ,  H04N21/2187 ,  H04N21/238 ,  H04N21/239 ,  H04N21/81

CPC分类号： H04N21/234363 ,  G06F3/013 ,  H04N21/2187 ,  H04N21/238 ,  H04N21/2393 ,  H04N21/816

摘要： In certain aspects of the disclosure, a method, a computer-readable medium, and a system for foveated rendering of omnidirectional media content are provided. The method includes receiving a request to access a stream of media data associated with the omnidirectional media content at a point in time the client is accessing the stream of media data for foveated rendering of the omnidirectional media content; determining an initial portion of media data, starting from the point in time the client requests to access, for foveated rendering of the omnidirectional media content for delivery to a client device; and transmitting, in response to the request, the initial portion of media data. The initial portion of media data comprises a portion of the omnidirectional media content for a viewport that is foveated rendered or to be displayed using foveated rendering on the client device according to the request.

公开(公告)号：US11882270B2

公开(公告)日：2024-01-23

申请号：US17341879

申请日：2021-06-08

申请人： MEDIATEK INC.

发明人： Shih-Ta Hsiang ,  Lulin Chen ,  Chih-Wei Hsu ,  Olena Chubach

IPC分类号： H04N19/105 ,  H04N19/172 ,  H04N19/46 ,  H04N19/159

CPC分类号： H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/46

摘要： Method and apparatus for signaling or parsing constrained active entries in reference picture lists for multi-layer coding are disclosed. For the decoder side, when the current picture is a RADL (Random Access Decodable Leading) picture, reference picture list 0 or reference picture list 1 of the current picture is mandatorily required to contain no active entry corresponding to a RASL (Random Access Skipped Leading) picture with pps_mixed_nalu_types_in_pic_flag equal to 0 or a picture that precedes an associated IRAP (Intra Random Access Point) picture in decoding order, and wherein an active entry in the reference picture list 0 or the reference picture list 1 of the RADL picture can refer to a RASL picture with the pps_mixed_nalu_types_in_pic_flag equal to 1 and a referenced RASL picture either belongs to the same layer or a different layer than a layer containing the current picture which is the RADL picture.

公开(公告)号：US11284077B2

公开(公告)日：2022-03-22

申请号：US17016257

申请日：2020-09-09

申请人： MediaTek Inc.

发明人： Chih-Wei Hsu ,  Lulin Chen ,  Yu-Wen Huang

IPC分类号： H04N19/119 ,  H04N19/176 ,  H04N19/169 ,  H04N19/70

摘要： A method for signaling subpicture structures for coded video is provided. A video decoder receives data from a bitstream to be decoded as a sequence of video pictures. The video decoder receives from the bitstream subpicture specification for one or more subpictures in the sequence of video pictures. The subpicture specification identifies a position and a size for each subpicture by providing an index that identifies a coding tree unit (CTU) for the subpicture. The video decoder reconstructs each subpicture for the sequence of video pictures according to the subpicture specification.

公开(公告)号：US11139000B2

公开(公告)日：2021-10-05

申请号：US15913738

申请日：2018-03-06

申请人： MEDIATEK INC.

发明人： Xin Wang ,  Lulin Chen ,  Wang Lin Lai ,  Shan Liu

IPC分类号： G11B27/32 ,  H04N21/854 ,  H04N21/4728 ,  H04N21/81 ,  G11B27/10 ,  G11B27/34

摘要： Aspects of the disclosure provide an apparatus that includes interface circuitry and processing circuitry. The interface circuitry is configured to receive signals carrying metadata that associates a region of interest in a first visual view provided by a first visual track with the first visual track and a second visual track that provides a second visual view that is a part of the first visual view. The processing circuitry is configured to parse the metadata, determine, when the region of interest is selected, the second visual track to provide visual data, and generate images for the region of interest based on the visual data from the second visual track.