公开(公告)号：US09979959B2

公开(公告)日：2018-05-22

申请号：US13797458

申请日：2013-03-12

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang

IPC: H04N7/26 ,  H04N19/136 ,  H04N19/70 ,  H04N19/46 ,  H04N19/174

CPC classification number: H04N19/70 ,  H04N19/174 ,  H04N19/46

Abstract: Various techniques for enhanced support of stream adaptation and splicing based on clean random access (CRA) pictures are described. Instead of using a flag in the slice header to indicate that a broken link picture is present, a distinct network abstraction layer (NAL) unit type can be used to indicate the presence of a broken link picture. In some implementations, a first distinct NAL unit type may be used to indicate the presence of a broken link picture with leading pictures, while a second distinct NAL unit type indicates the presence of a broken link picture without leading pictures. In some implementations, a third distinct NAL unit type may be used to indicate the presence of a broken link picture with decodable leading pictures.

公开(公告)号：US09979958B2

公开(公告)日：2018-05-22

申请号：US13796737

申请日：2013-03-12

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang

IPC: H04N7/26 ,  H04N19/136 ,  H04N19/70 ,  H04N19/46 ,  H04N19/174

CPC classification number: H04N19/70 ,  H04N19/174 ,  H04N19/46

Abstract: Systems, methods, and devices for processing video data are disclosed. Some examples receive a slice of a current picture to be decoded for a sequence of video data. These examples may also receive, in a slice header of the slice, at least one entropy coded syntax element and at least one non-entropy coded syntax element, wherein the non-entropy coded syntax element is before the entropy coded syntax element in the slice header and indicates whether pictures prior to the current picture in decoding order are to be emptied from a decode picture buffer without being output. They may decode the slice based on the non-entropy coded syntax element.

公开(公告)号：US09918091B2

公开(公告)日：2018-03-13

申请号：US14742468

申请日：2015-06-17

Applicant: QUALCOMM Incorporated

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

IPC: H04N7/12 ,  H04N19/136 ,  H04N19/31 ,  H04N19/44 ,  H04N19/184 ,  H04N19/187 ,  H04N19/59 ,  H04N19/119 ,  H04N19/169 ,  H04N19/196 ,  H04N19/70 ,  H04N19/30

CPC classification number: H04N19/136 ,  H04N19/119 ,  H04N19/184 ,  H04N19/187 ,  H04N19/188 ,  H04N19/196 ,  H04N19/30 ,  H04N19/31 ,  H04N19/44 ,  H04N19/59 ,  H04N19/70

Abstract: Techniques and systems are provided for encoding video data. For example, a method of encoding video data includes generating, by an encoder, an encoded video bitstream according to a first coding protocol. The encoded video bitstream includes one or more enhancement layers and a video parameter set defining parameters of the encoded video bitstream. The method further includes determining that a base layer is to be provided to a decoding device by an external source and is not to be provided as part of the encoded video bitstream. The method further includes assigning a minimum value to a syntax structure in the video parameter set when it is determined that the base layer is to be provided by the external source. The syntax structure defines profile, tier, and level parameters for the base layer.

公开(公告)号：US20180063574A1

公开(公告)日：2018-03-01

申请号：US15684676

申请日：2017-08-23

Applicant: QUALCOMM Incorporated

Inventor： Thomas Stockhammer ,  Ye-Kui Wang ,  Dmytro Rusanovskyy

IPC: H04N21/434 ,  H04L29/06 ,  H04N21/44 ,  H04N21/435

Abstract: In one example, a device for retrieving media data includes one or more processors implemented in circuitry and configured to parse system level information of a media bitstream encapsulating a video elementary stream, the system level information indicating that the video elementary stream includes one or more supplemental enhancement information (SEI) messages and payload types for each of the SEI messages, extract the one or more SEI messages and the payload types from the system level information, and send the one or more SEI messages and the payload types to one or more other processing units of the device.

公开(公告)号：US09860540B2

公开(公告)日：2018-01-02

申请号：US14584351

申请日：2014-12-29

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang ,  Ying Chen

IPC: H04N19/70 ,  H04N19/187 ,  H04N19/103 ,  H04N19/146 ,  H04N19/186 ,  H04N19/172 ,  H04N19/423

CPC classification number: H04N19/187 ,  H04N19/103 ,  H04N19/146 ,  H04N19/172 ,  H04N19/186 ,  H04N19/423 ,  H04N19/70

Abstract: An apparatus for coding video information according to certain aspects includes a processor configured to determine a value of a flag associated with a current picture of a current layer to be decoded, the flag indicating whether pictures in a decoded picture buffer (DPB) should be output, wherein the current picture is an intra random access point (TRAP) picture that starts a new coded video sequence (CVS) and wherein the determination of the value of the flag is based on at least one of: (1) the chroma format of the current picture and the chroma format of the preceding picture, (2) the bit depth of the luma samples of the current picture and the bit depth of the luma samples of the preceding picture, or (3) the bit depth of the chroma samples of the current picture and the bit depth of the chroma samples of the preceding picture.

公开(公告)号：US09854234B2

公开(公告)日：2017-12-26

申请号：US13803736

申请日：2013-03-14

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Ye-Kui Wang

IPC: H04N19/00 ,  H04N19/70 ,  H04N19/573 ,  H04N19/503 ,  H04N19/597 ,  H04N19/58 ,  H04N19/51

CPC classification number: H04N19/573 ,  H04N19/503 ,  H04N19/51 ,  H04N19/58 ,  H04N19/597 ,  H04N19/70

Abstract: The techniques of this disclosure may be generally related to reference statues of pictures. The techniques may store the reference status information of reference pictures of a picture, at an instance when the picture is being coded. The techniques may then utilize the reference status information of the reference pictures of the picture, at the instance when the picture was coded, to inter-predict video blocks of a subsequent picture.

公开(公告)号：US09838697B2

公开(公告)日：2017-12-05

申请号：US14749561

申请日：2015-06-24

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/70 ,  H04N19/40 ,  H04N19/129 ,  H04N19/30 ,  H04N19/174 ,  H04N19/187 ,  H04N19/423 ,  H04N19/44 ,  H04N19/513 ,  H04N19/196

CPC classification number: H04N19/174 ,  H04N19/129 ,  H04N19/187 ,  H04N19/196 ,  H04N19/30 ,  H04N19/40 ,  H04N19/423 ,  H04N19/44 ,  H04N19/513 ,  H04N19/70

Abstract: A device for decoding video data includes a memory configured to store at least a portion of a bitstream of multi-layer video data and one or more processors configured to receive a first access unit delimiter (AUD) network abstraction layer (NAL) unit for a first access unit, wherein a layer identifier for the first AUD NAL unit is equal to zero; receive a second AUD NAL unit for the first access unit, wherein a layer identifier for the second AUD NAL unit is greater than zero; and decode the first access unit.

公开(公告)号：US09838684B2

公开(公告)日：2017-12-05

申请号：US13776071

申请日：2013-02-25

Applicant: QUALCOMM Incorporated

Inventor： Muhammed Zeyd Coban ,  Ye-Kui Wang ,  Marta Karczewicz

IPC: H04N7/26 ,  H04N19/436 ,  H04N19/174 ,  H04N19/17

CPC classification number: H04N19/436 ,  H04N19/17 ,  H04N19/174

Abstract: In one example, a video coder may be configured to determine that a slice of a picture of video data begins in a row of coding tree units (CTUs) in the picture at a position other than a beginning of the row. Based on the determination, the video coder may be further configured to determine that the slice ends within the row of CTUs. The video coder may be further configured to code the slice based on the determination that the slice ends within the row of CTUs.

公开(公告)号：US20170347163A1

公开(公告)日：2017-11-30

申请号：US15602887

申请日：2017-05-23

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang

IPC: H04N21/81 ,  H04L29/08 ,  G06T9/00 ,  H04L29/06 ,  H04N21/44 ,  H04N21/438

Abstract: A device for processing media data is configured to receive media data including virtual reality (VR) video data; determine, based at least in part on data signaled at an adaptation set level of a media presentation description for a media presentation, a projection mapping used in the media presentation; process segments of a video representation of the media presentation based on the projection mapping used in the media presentation. A device for processing media data is configured to generate media data that includes VR video data; include in the media data, data signaled at an adaptation set level of a media presentation description that identifies a projection mapping used in media presentation included in the media data; and send segments of a video representation of the media presentation based on the projection mapping used in the media presentation.

公开(公告)号：US20170339416A1

公开(公告)日：2017-11-23

申请号：US15599295

申请日：2017-05-18

Applicant: QUALCOMM Incorporated

Inventor： Fnu Hendry ,  Ye-Kui Wang

IPC: H04N19/167 ,  H04N19/70 ,  H04N19/176

CPC classification number: H04N19/167 ,  H04N19/176 ,  H04N19/597 ,  H04N19/68 ,  H04N19/70

Abstract: In general, the disclosure to techniques for regional random access within a picture of video data. For example, a video coding device receives a plurality of pictures in a coding order. Each respective picture of the plurality of pictures comprises a plurality of regions. For a first region in a first picture of the plurality of pictures, the video coding device determines that the first region is codable independent from each other region of the first picture and from a first region in a second picture preceding the first picture in the coding order and, responsive to making such a determination, determine that the first region in the first picture has random accessibility. The video coding device codes each video block in the first region independent from any video blocks outside of the first region.