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    Mapping of tile grouping and samples in HEVC and L-HEVC file formats
    381.
    发明授权
    Mapping of tile grouping and samples in HEVC and L-HEVC file formats 有权

    公开(公告)号：US10291923B2

    公开(公告)日：2019-05-14

    申请号：US15602664

    申请日：2017-05-23

    Applicant: QUALCOMM Incorporated

    Inventor： Fnu Hendry ,  Ye-Kui Wang

    IPC: H04N19/70 ,  H04N19/119 ,  H04N19/169 ,  H04N19/174 ,  H04N19/96

    Abstract: A computing device receive a bitstream comprising a plurality of coded slice NAL units encapsulating RBSPs for respective slice segments of a slice of a picture. The slice segments including an independent slice segment and one or more dependent slice segments. The picture is partitioned into a plurality of tiles, including a first tile and a second tile. The slice segments include one or more slice segments that contain CTUs of the first tile and one or more slice segments that contain CTUs of the second tile. The computing device generates a file storing the bitstream. As part of generating the file, the computing device defines a tile region in the file. The tile region comprises an integer number of tiles forming a rectangular region encoded in one or more of the slice segments. The rectangular tile region includes the first tile and not the second tile.

    Low latency video streaming
    383.
    发明授权
    Low latency video streaming 有权

    公开(公告)号：US10270823B2

    公开(公告)日：2019-04-23

    申请号：US15019804

    申请日：2016-02-09

    Applicant: QUALCOMM Incorporated

    Inventor： Thomas Stockhammer ,  Ye-Kui Wang

    IPC: H04L29/06 ,  H04L29/08 ,  H04N21/44 ,  H04N21/262 ,  H04N21/266 ,  H04N21/438 ,  H04N21/845 ,  H04N21/854 ,  H04N21/2343

    Abstract: A client device includes one or more processors configured to determine, from a manifest file, a plurality of types of segments included in a representation of media content, one or more functions provided by each of the types of segments, and positions of segments conforming to each of the types of segments in the representation, wherein at least one of the types of segments provides a point at which to begin retrieving data from the representation, determine, from the manifest file, a segment of the representation conforming to the type that provides the point at which to begin retrieving data from the representation, and retrieve the determined segment from the representation.

    Systems and methods for signaling information for layer sets in a parameter set
    384.
    发明授权
    Systems and methods for signaling information for layer sets in a parameter set 有权

    公开(公告)号：US10250884B2

    公开(公告)日：2019-04-02

    申请号：US14743434

    申请日：2015-06-18

    Applicant: QUALCOMM Incorporated

    Inventor： Ye-Kui Wang ,  Fnu Hendry ,  Adarsh Krishnan Ramasubramonian

    IPC: H04N19/146 ,  H04N19/463 ,  H04N19/597 ,  H04N19/513 ,  H04N19/46 ,  H04N19/30 ,  H04N19/184 ,  H04N19/70 ,  H04N19/44

    Abstract: Techniques and systems are provided for encoding and decoding video data. For example, a method of decoding video data includes obtaining an encoded video bitstream comprising one or more layer sets and one or more additional layer sets. The encoded video bitstream includes a video parameter set defining parameters of the encoded video bitstream. The one or more layer sets are defined in a base part of the video parameter set, and the one or more additional layer sets are defined in an extension part of the video parameter set. The method further includes decoding one or more syntax elements from the video parameter set. The one or more syntax elements include rate information for the one or more layer sets defined in the base part of the video parameter set and for the one or more additional layer sets defined in the extension part of the video parameter set.

    Device and method for scalable coding of video information
    385.
    发明授权
    Device and method for scalable coding of video information 有权

    公开(公告)号：US10212435B2

    公开(公告)日：2019-02-19

    申请号：US14513030

    申请日：2014-10-13

    Applicant: QUALCOMM Incorporated

    Inventor： Adarsh Krishnan Ramasubramonian ,  Ying Chen ,  Ye-Kui Wang ,  Fnu Hendry

    IPC: H04N19/30 ,  H04N19/187 ,  H04N19/46 ,  H04N19/70 ,  H04N19/80 ,  H04N19/68 ,  H04N19/86

    Abstract: An apparatus configured to code video information includes a memory unit and a processor in communication with the memory unit. The memory unit is configured to store video information associated with a first video layer having a first picture in a first access unit. The processor is configured to determine whether the first picture in the first access unit is an intra random access point (IRAP) picture, and in response to determining that the first picture in the first access unit is an IRAP picture, provide an indication, in a bitstream, to reset a picture order count (POC) of at least one other picture in the first access unit, wherein the at least one other picture is not an IRAP picture. The processor may encode or decode the video information.

    Reference picture list construction in intra block copy mode
    388.
    发明授权
    Reference picture list construction in intra block copy mode 有权

    公开(公告)号：US10178403B2

    公开(公告)日：2019-01-08

    申请号：US15187694

    申请日：2016-06-20

    Applicant: QUALCOMM Incorporated

    Inventor： Vadim Seregin ,  Krishnakanth Rapaka ,  Ye-Kui Wang ,  Marta Karczewicz

    IPC: H04N11/02 ,  H04N19/503 ,  H04N19/70 ,  H04N19/593 ,  H04N19/573

    Abstract: An apparatus configured to construct a reference picture list includes a memory and one or more processors in communication with the memory. The memory is configured to store one or more reference pictures. The one or more processors are configured to determine (i) a first number representative of a total number of reference pictures available for prediction in at least one of inter mode or intra block copy mode and (ii) a second number representative of a total number of reference pictures to be included in the reference picture list, and in response to a determination that the second number is greater than or equal to the first number, refrain from replacing a reference picture in the reference picture list with a current picture to be predicted. The one or more processors may encode or decode the current picture based on the reference picture list.

    HRD descriptor and buffer model of data streams for carriage of HEVC extensions
    389.
    发明授权
    HRD descriptor and buffer model of data streams for carriage of HEVC extensions 有权

    公开(公告)号：US10171842B2

    公开(公告)日：2019-01-01

    申请号：US15971373

    申请日：2018-05-04

    Applicant: QUALCOMM Incorporated

    Inventor： Fnu Hendry ,  Ye-Kui Wang ,  Adarsh Krishnan Ramasubramonian

    IPC: H04N19/70 ,  H04N19/44 ,  H04L29/06 ,  H04N19/423 ,  H04N19/30 ,  H04N21/2343 ,  H04N21/24

    Abstract: A video processing device obtains a data stream comprising a plurality of elementary streams and a High Efficiency Video Coding (HEVC) timing and Hypothetical Reference Decoder (HRD) descriptor. The HEVC timing and HRD descriptor comprises a target schedule index syntax element indicating an index of a delivery schedule. The video processing device may identify, based on a set of parameters, a syntax element in an array of syntax elements in a video parameter set (VPS). The set of parameters may comprise a parameter having a value equal to a value of the target schedule index syntax element. The video processing device may identify, based on an index specified by the identified syntax element, a particular HRD parameters syntax structure in a plurality of HRD parameters syntax structures as being applicable to a particular elementary stream.

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