公开(公告)号：US20170237999A1

公开(公告)日：2017-08-17

申请号：US15432855

申请日：2017-02-14

Applicant: QUALCOMM Incorporated

Inventor： Fnu Hendry ,  Ye-Kui Wang

IPC: H04N19/39 ,  H04N19/70

CPC classification number: H04N19/39 ,  H04N19/184 ,  H04N19/30 ,  H04N19/70

Abstract: In various implementations, techniques are described herein to resolve issues related to the location of an EOB NAL unit in an ISO base media file. In various implementations, these techniques include relaxing the requirement that a file include only one EOB NAL unit. These techniques further include providing the EOB NAL unit from the highest layer when reconstructing the bitstream. This EOB NAL unit can be added to a last access unit in the reconstructed bitstream. When the EOB NAL unit from the highest layer is not present, an EOB NAL unit from a lower layer can be provided instead.

公开(公告)号：US09712837B2

公开(公告)日：2017-07-18

申请号：US14656573

申请日：2015-03-12

Applicant: QUALCOMM Incorporated

Inventor： Ye-kui Wang ,  Krishnakanth Rapaka ,  Jianle Chen ,  Fnu Hendry ,  Adarsh Krishnan Ramasubramonian

IPC: H04N19/44 ,  H04N19/156 ,  H04N19/30 ,  H04N19/42

CPC classification number: H04N19/44 ,  H04N19/156 ,  H04N19/30 ,  H04N19/42

Abstract: Methods for defining decoder capability for decoding multi-layer bitstreams containing video information, in which the decoder is implemented based on multiple single-layer decoder cores, are disclosed. In one aspect, the method may include identifying at least one allocation of layers of the bitstream into at least one set of layers. The method may further include detecting whether each set of layers is capable of being exclusively assigned to one of the decoder cores for the decoding of the bitstream. The method may also include determining whether the decoder is capable of decoding the bitstream based at least in part on detecting whether each set of layers is capable of being exclusively assigned to one of the decoder cores.

公开(公告)号：US09706228B2

公开(公告)日：2017-07-11

申请号：US14514310

申请日：2014-10-14

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/597 ,  H04N19/70

CPC classification number: H04N19/70 ,  H04N19/597

Abstract: A computing device obtains a Network Abstraction Layer (NAL) unit header of a NAL unit of the multi-layer video data. The NAL unit header comprises a layer identifier syntax element having a value that specifies an identifier of a layer of the NAL unit. The layer identifier syntax element comprises a plurality of bits that represent the value within a defined range of values. A requirement of the bitstream conforming to a video coding standard is that the value of the layer identifier syntax element is less than the maximum value of the range of values.

公开(公告)号：US09654774B2

公开(公告)日：2017-05-16

申请号：US14567762

申请日：2014-12-11

Applicant: QUALCOMM Incorporated

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

IPC: H04N7/18 ,  H04N19/105 ,  H04N19/114 ,  H04N19/136 ,  H04N19/172 ,  H04N19/169 ,  H04N19/44 ,  H04N19/90 ,  H04N19/597 ,  H04N19/70 ,  H04N19/30 ,  H04N19/103 ,  H04N19/65

CPC classification number: H04N19/105 ,  H04N19/103 ,  H04N19/114 ,  H04N19/136 ,  H04N19/172 ,  H04N19/188 ,  H04N19/30 ,  H04N19/44 ,  H04N19/597 ,  H04N19/65 ,  H04N19/70 ,  H04N19/90

Abstract: In an example, a method of decoding video data includes decoding, by a video decoder, a first picture of multi-layer video data, where the first picture has a first picture type. The method also includes, based on the first picture having the first picture type, decoding, by the video decoder, data representative of picture order count (POC) most significant bits (MSB) value for the first picture.

公开(公告)号：US09648348B2

公开(公告)日：2017-05-09

申请号：US14521099

申请日：2014-10-22

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/597 ,  H04N19/136 ,  H04N19/30 ,  H04N19/59 ,  H04N19/46 ,  H04N5/91 ,  H04N19/70 ,  H04N19/573 ,  H04N19/58 ,  H04N21/845 ,  H04N21/854 ,  H04N19/52 ,  H04N19/91

CPC classification number: H04N19/597 ,  H04N5/91 ,  H04N19/136 ,  H04N19/30 ,  H04N19/46 ,  H04N19/52 ,  H04N19/573 ,  H04N19/58 ,  H04N19/59 ,  H04N19/70 ,  H04N19/91 ,  H04N21/8453 ,  H04N21/85406

Abstract: A computing device generates a file that comprises a track box that contains metadata for a track in the file. Media data for the track comprises a sequence of samples. Each of the samples is a video access unit of multi-layer video data. As part of generating the file, the computing device generates, in the file, an additional box that documents all of the samples containing at least one Intra Random Access Point (IRAP) picture.

公开(公告)号：US20170111642A1

公开(公告)日：2017-04-20

申请号：US15286273

申请日：2016-10-05

Applicant: QUALCOMM Incorporated

Inventor： Fnu Hendry ,  Ye-Kui Wang

IPC: H04N19/187 ,  H04N19/70 ,  H04N19/50

CPC classification number: H04N19/70 ,  H04N19/30 ,  H04N21/8451 ,  H04N21/85406

Abstract: A device generates, in a file storing a multi-layer bitstream, a track box that contains metadata for a track. The device generates, in the track box, a sample description box containing a sample group description entry. Additionally, the device generates, in the track box, a sample-to-group box for the track. The sample-to-group box mapping samples of the track into a sample group. The sample-to-group box specifies target layers among layers present in the track. Each of the target layers contains at least one picture belonging to a particular picture type. The sample group is one of a temporal sub-layer access sample group and the particular picture type is a temporal sub-layer access picture type, or a stepwise temporal sub-layer access sample group and the particular picture type is a step-wise temporal sub-layer access picture type.

公开(公告)号：US09525883B2

公开(公告)日：2016-12-20

申请号：US14331020

申请日：2014-07-14

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/46 ,  H04N19/169 ,  H04N19/597 ,  H04N19/70 ,  H04N19/30 ,  H04N19/187

CPC classification number: H04N19/188 ,  H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/597 ,  H04N19/70

Abstract: A video processing device includes a memory storing video data and one or more processors configured to: receive a first network abstraction layer (NAL) unit comprising a first picture of an access unit; in response to determining the first NAL unit comprises an intra random access point (IRAP) picture and in response to a NAL unit type for the first NAL unit indicating the presence of an instantaneous decoding refresh (IDR) picture without any associated leading pictures for a second NAL unit of the access unit comprising another IRAP picture, determine a NAL unit type for the second NAL unit to be a NAL unit type indicating the presence of an IDR picture without any associated leading pictures; and, process the first NAL unit and the second NAL unit based on the NAL unit type for the second NAL unit.

Abstract translation: 视频处理设备包括存储视频数据的存储器和配置成：接收包括访问单元的第一画面的第一网络抽象层（NAL）单元的一个或多个处理器; 响应于确定第一NAL单元包括内部随机接入点（IRAP）图片，并且响应于第一NAL单元的NAL单元类型，指示存在瞬时解码刷新（IDR）图像，而没有任何相关联的前导画面用于 所述接入单元的第二NAL单元包括另一个IRAP图像，将所述第二NAL单元的NAL单元类型确定为指示没有任何相关联的前导图像的IDR图像的存在的NAL单元类型; 并且基于第二NAL单元的NAL单元类型处理第一NAL单元和第二NAL单元。

公开(公告)号：US20160105688A1

公开(公告)日：2016-04-14

申请号：US14878783

申请日：2015-10-08

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/85 ,  H04N19/463 ,  H04N19/44

CPC classification number: H04N19/85 ,  H04N19/187 ,  H04N19/188 ,  H04N19/30 ,  H04N19/44 ,  H04N19/463 ,  H04N19/597 ,  H04N19/70

Abstract: A device for processing a bitstream including video data, such as a demultiplexer, extracts a descriptor from the bitstream, wherein the bitstream includes layers of video data for operation points, separate from the descriptor, such that each operation point includes one or more of the layers of video data, and wherein the descriptor includes a set of profile, tier, and level (PTL) structures and data that associates each of the layers of each of the operation points with a corresponding one of the PTL structures, extracts video data for one of the operation points from the bitstream based at least in part on the PTL structures to which the layers of the one of the operation points correspond, and provides the extracted video data to a video decoder.

Abstract translation: 一种用于处理包括诸如解复用器之类的视频数据的比特流的装置从比特流中提取描述符，其中，比特流包括与描述符分开的用于操作点的视频数据层，使得每个操作点包括一个或多个 多层视频数据，并且其中所述描述符包括一组简档，层和级（PTL）结构和使每个操作点的每个层与PTL结构中的相应一个相关联的数据，提取用于 至少部分地基于所述操作点之一的层对应于所述PTL结构的比特流中的一个操作点，并将所提取的视频数据提供给视频解码器。

公开(公告)号：US20150381998A1

公开(公告)日：2015-12-31

申请号：US14749534

申请日：2015-06-24

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/30 ,  H04N19/513

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 encoding video data includes a memory configured to store at least a portion of a multi-layer bitstream of video data and one or more processors configured to determine that a supplemental enhancement information (SEI) message applies to more than one layer of the multi-layer video data; determine that the SEI message references a syntax element that has multiple instances associated with the more than one layer of the multi-layer video data; and set all of the multiple instances to a same value.

Abstract translation: 用于对视频数据进行编码的设备包括被配置为存储视频数据的多层比特流的至少一部分的存储器和被配置为确定补充增强信息（SEI）消息适用于多于一层 多层视频数据; 确定SEI消息引用具有与多层视频数据的多于一层相关联的多个实例的语法元素; 并将所有多个实例设置为相同的值。

公开(公告)号：US20150373345A1

公开(公告)日：2015-12-24

申请号：US14743327

申请日：2015-06-18

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/169 ,  H04N19/172 ,  H04N19/105 ,  H04N19/187

CPC classification number: H04N19/188 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/187 ,  H04N19/30 ,  H04N19/70

Abstract: Techniques and systems are provided for decoding and processing video data. For example, a method of decoding video data includes accessing an encoded video bitstream comprising multiple layers. The encoded video bitstream includes multiple access units, with a first access unit including an end of sequence network abstraction layer unit. A second access unit includes an intra random access point picture and is a next subsequent access unit in decoding order following the first access unit. The method further includes reinitializing decoding at the second access unit based on the second access unit being the next subsequent access unit in decoding order following the end of sequence network abstraction layer unit of the first access unit.

Abstract translation: 提供了用于解码和处理视频数据的技术和系统。 例如，解码视频数据的方法包括访问包括多个层的编码视频比特流。 编码视频比特流包括多个接入单元，其中第一接入单元包括序列末端网络抽象层单元。 第二存取单元包括内部随机接入点图像，并且是按照第一存取单元之后的解码顺序的下一个后续存取单元。 该方法还包括在第一接入单元的序列网络抽象层单元的结尾之后，基于作为下一个后续接入单元的第二接入单元在第二接入单元中以解码顺序重新初始化解码。