公开(公告)号：US10158867B2

公开(公告)日：2018-12-18

申请号：US14741304

申请日：2015-06-16

Applicant: QUALCOMM Incorporated

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

IPC: H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/187 ,  H04N19/31 ,  H04N19/33 ,  H04N13/161 ,  H04N19/46 ,  H04N19/30 ,  H04N19/107 ,  H04N19/157 ,  H04N19/70 ,  H04W84/04 ,  H04W88/02

Abstract: An apparatus for coding video information according to certain aspects includes a memory unit configured to store video information associated with a plurality of layers and a processor. The processor is configured to obtain information associated with a current access unit (AU) to be coded, the current AU containing pictures from one or more layers of the plurality of layers. The processor is further configured to determine whether the current AU includes a first layer containing an intra random access point (IRAP) picture. The process is additionally configured to reset a picture order count (POC) of the second layer at the current AU, in response to determining that the current AU includes (1) a first layer that contains an IRAP picture and (2) a second layer containing no picture or containing a discardable picture.

公开(公告)号：US10136119B2

公开(公告)日：2018-11-20

申请号：US14151586

申请日：2014-01-09

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Ye-Kui Wang ,  Li Zhang

IPC: H04N13/00 ,  H04N13/161 ,  H04N19/597 ,  H04N19/176 ,  H04N19/70 ,  H04N19/58 ,  H04N19/577

Abstract: In an example, a method of decoding video data includes determining whether a reference index for a current block corresponds to an inter-view reference picture, and when the reference index for the current block corresponds to the inter-view reference picture, obtaining, from an encoded bitstream, data indicating a view synthesis prediction (VSP) mode of the current block, where the VSP mode for the reference index indicates whether the current block is predicted with view synthesis prediction from the inter-view reference picture.

公开(公告)号：US20180199075A1

公开(公告)日：2018-07-12

申请号：US15862251

申请日：2018-01-04

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang ,  Thomas Stockhammer

IPC: H04N21/2343 ,  H04L29/06 ,  H04L29/08

Abstract: A media device pre-fetches media data that is likely to be retrieved. An example media device includes a memory for storing media data, and one or more processors implemented in circuitry and configured to receive information indicating at least one data structure of a plurality of data structures that is likely to be retrieved by a plurality of user devices operated by a respective plurality of users, the data structure including media data, and retrieve the media data of the data structure before receiving requests for the media data from the user devices. The information may be included in, e.g., a manifest file, a special Parameters Enhancing Delivery (PED) message, and/or a separate track of a video file multiplexed with other tracks of the video file.

公开(公告)号：US20180176575A1

公开(公告)日：2018-06-21

申请号：US15897008

申请日：2018-02-14

Applicant: QUALCOMM Incorporated

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

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

CPC classification number: H04N19/146 ,  H04N19/184 ,  H04N19/30 ,  H04N19/44 ,  H04N19/46 ,  H04N19/463 ,  H04N19/513 ,  H04N19/597 ,  H04N19/70

Abstract: Techniques and systems are provided for encoding and decoding video data. For example, a method of encoding video data includes generating an encoded video bitstream comprising multiple layers. The encoded video bitstream includes a video parameter set defining parameters of the encoded video bitstream. The video parameter set includes video usability information. The method further includes determining whether timing information is signaled in the video usability information of the video parameter set. The method further includes determining whether to signal hypothetical reference decoder parameters in the video usability information of the video parameter set based on whether timing information is signaled in the video usability information.

公开(公告)号：US09979975B2

公开(公告)日：2018-05-22

申请号：US15465271

申请日：2017-03-21

Applicant: QUALCOMM Incorporated

Inventor： Krishnakanth Rapaka ,  Ye-Kui Wang ,  Adarsh Krishnan Ramasubramonian ,  Jianle Chen

IPC: H04B1/66 ,  H04N19/36 ,  H04N19/70 ,  H04N19/105 ,  H04N19/184 ,  H04N19/172 ,  H04N19/96 ,  H04N19/176

CPC classification number: H04N19/36 ,  H04N19/105 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/30 ,  H04N19/436 ,  H04N19/597 ,  H04N19/70 ,  H04N19/96

Abstract: Bitstream restrictions or constraints on the partitioning of pictures across layers of video data are described. In some examples, the number of tiles per picture for each layer of a plurality of layers is constrained based on a maximum number of tiles per picture for the layer. In some examples, the number of tiles per picture for each layer of the plurality of layers is no greater than the maximum number of tiles per picture for the layer. In some examples, a sum of the numbers of tiles per picture for the plurality of layers is no greater than a sum of the maximum numbers of tiles per picture for the plurality of layers. In some examples, a second largest coding unit (LCU) or coding tree block (CTB) size for a second layer is constrained based on, e.g., to be equal to, a first LCU size for a first layer.

公开(公告)号：US09979971B2

公开(公告)日：2018-05-22

申请号：US14512962

申请日：2014-10-13

Applicant: QUALCOMM Incorporated

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

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

CPC classification number: H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/68 ,  H04N19/70 ,  H04N19/80 ,  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. The processor is configured to process picture order count (POC) derivation information associated with the first picture, and determine, based on the POC derivation information associated with the first picture, a POC value of at least one other picture in the first video layer that precedes the first picture in decoding order. The processor may encode or decode the video information.

公开(公告)号：US09967583B2

公开(公告)日：2018-05-08

申请号：US13802045

申请日：2013-03-13

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang

IPC: H04N19/176 ,  H04N19/50 ,  H04N19/70 ,  H04N19/46 ,  H04N19/31 ,  H04N19/573

CPC classification number: H04N19/50 ,  H04N19/31 ,  H04N19/46 ,  H04N19/573 ,  H04N19/70

Abstract: In one example, a device for presenting video data includes a processor configured to determine an integer value for the video data, determine a difference value between a presentation time of a first picture and a presentation time of a second picture, wherein the difference value is equal to the integer value multiplied by a clock tick value, and present the first picture and the second picture according to the determined difference value.

公开(公告)号：US09928297B2

公开(公告)日：2018-03-27

申请号：US14969954

申请日：2015-12-15

Applicant: QUALCOMM Incorporated

Inventor： Fnu Hendry ,  Ye-Kui Wang

IPC: G06F17/30 ,  H04N19/70 ,  H04N19/46 ,  H04N19/50 ,  H04N19/85 ,  H04N21/854

CPC classification number: G06F17/30784 ,  H04N19/46 ,  H04N19/50 ,  H04N19/70 ,  H04N19/85 ,  H04N21/85406

Abstract: A device generates, in a container box of a file for storage of video contents, a SampleGroupDescription box that provides a sample group description for a sample grouping. The SampleGroupDescription box includes a grouping type syntax element having a particular value. Additionally, the SampleGroupDescription box includes one or more sample group entries. The device generates, in the same container box, a plurality of SampleToGroup boxes. Each respective SampleToGroup box of the plurality of SampleToGroup boxes includes a respective grouping type syntax element having the particular value, includes a respective sample count syntax element indicating a number of samples in a respective sample grouping, and includes a respective group description index syntax element indicating an index of an entry in the SampleGroupDescription box which describes samples of the respective sample grouping. Each sample of the respective sample grouping comprises a respective picture of the video contents.

公开(公告)号：US09832481B2

公开(公告)日：2017-11-28

申请号：US14584473

申请日：2014-12-29

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang ,  Jianle Chen ,  Ying Chen ,  Fnu Hendry

IPC: H04N19/58 ,  H04N19/52 ,  H04N19/70 ,  H04N19/33

CPC classification number: H04N19/52 ,  H04N19/33 ,  H04N19/58 ,  H04N19/70

Abstract: An apparatus for coding video information according to certain aspects includes a memory and a processor. The memory unit is configured to store video information associated with an enhancement layer (EL) and a corresponding reference layer (RL). The processor is configured to: code an EL picture in a current access unit (AU), the EL coded using a first standard that is different from a second standard that is used to code the RL, wherein the coding of the EL picture is based on information associated with a RL picture in the current access unit, the information associated with the RL picture provided by an external means and consisting of: (1) decoded sample values of the RL picture; (2) a representation format of the RL picture; and (3) an indication of whether the RL picture is an instantaneous decoding refresh (IDR) picture.

公开(公告)号：US20170339421A1

公开(公告)日：2017-11-23

申请号：US15601233

申请日：2017-05-22

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang

IPC: H04N19/169 ,  H04N19/105 ,  H04N19/159 ,  H04N19/70 ,  H04N19/30 ,  H04N19/172

CPC classification number: H04N19/188 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/30 ,  H04N19/70 ,  H04N21/85406

Abstract: A device includes, in a first track of the file, a first end of sequence (EOS) network abstraction layer (NAL) unit for a coded video sequence of a bitstream. The first EOS NAL unit is in a first access unit of the coded video sequence. The device also includes, in a second track of the file, a second EOS NAL unit for the coded video sequence. The second EOS NAL unit is in a second access unit of the coded video sequence, the second EOS NAL unit being different from the first EOS NAL unit. The device may perform similar actions for end of bitstream (EOB) NAL units.