公开(公告)号：US11665219B2

公开(公告)日：2023-05-30

申请号：US16030387

申请日：2018-07-09

Applicant: QUALCOMM Incorporated

Inventor： Thomas Stockhammer ,  Ye-Kui Wang

IPC: H04L29/06 ,  H04L29/08 ,  H04L65/75 ,  H04L67/02 ,  H04N21/262 ,  H04N21/2343 ,  H04N21/2362 ,  H04N21/845 ,  H04L65/65 ,  H04L65/612

CPC classification number: H04L65/75 ,  H04L65/612 ,  H04L65/65 ,  H04L65/765 ,  H04L67/02 ,  H04N21/2362 ,  H04N21/23439 ,  H04N21/26258 ,  H04N21/8456

Abstract: In one example, a device for retrieving media data includes a memory configured to store media data, and a processor implemented in circuitry and configured to: process a descriptor of a manifest file of media content including the media data, the descriptor corresponding to an adaptation set of the media content and including data representative of a box of file level information that describes a property of a track of a media file of the media content including media data of the adaptation set, determine whether to retrieve the media data of the adaptation set according to the data representative of the file level information, and in response to determining to retrieve the media data, send a request to retrieve the media data.

公开(公告)号：US20220159272A1

公开(公告)日：2022-05-19

申请号：US17532920

申请日：2021-11-22

Applicant: QUALCOMM Incorporated

Inventor： Fnu Hendry ,  Ye-Kui Wang

IPC: H04N19/167 ,  H04N19/70 ,  H04N19/597 ,  H04N19/68 ,  H04N19/176

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.

公开(公告)号：US11321516B2

公开(公告)日：2022-05-03

申请号：US16250776

申请日：2019-01-17

Applicant: QUALCOMM Incorporated

Inventor： Waqar Zia ,  Charles Nung Lo ,  Thomas Stockhammer ,  Giridhar Dhati Mandyam ,  Ye-Kui Wang ,  Gordon Kent Walker

IPC: G06F16/955 ,  G06F40/143 ,  H04N21/435 ,  G06F40/197 ,  G06F16/958 ,  H04L67/02 ,  H04L67/568

Abstract: In one example, a device for retrieving media data includes a memory configured to store an ISO Base Media File Format (ISO BMFF) file including one or more samples including hypertext markup language (HTML) elements defining dynamic web content, and a processing unit implemented in circuitry and configured to: retrieve the ISO BMFF file, extract the HTML elements from the samples of the file, and processing the HTML elements to present the dynamic web content. The HTML elements may include JavaScript elements. The processing unit may also present the dynamic web content in a manner that is synchronized with corresponding media data.

公开(公告)号：US10805650B2

公开(公告)日：2020-10-13

申请号：US15935553

申请日：2018-03-26

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang ,  Thomas Stockhammer

IPC: H04N21/235 ,  H04N21/854 ,  H04N21/845 ,  H04N21/462 ,  H04N21/84 ,  H04N21/81 ,  H04N21/435 ,  H04N21/258 ,  H04N21/482

Abstract: An example device for retrieving media data includes one or more processors configured to retrieve a manifest file specifying data for at least one representation of a media presentation, wherein the manifest file includes data that specifies one or more codecs for the at least one representation, extract, from the manifest file, the data that specifies the one or more codecs, the data including a first element representing a sample entry type code of a track of the at least one representation, wherein the first element represents the sample entry type code using a restricted scheme, and a second element representing a restricted scheme type code for the restricted scheme of the track, and retrieve the media data of the at least one representation based on the first element and the second element.

公开(公告)号：US10791315B2

公开(公告)日：2020-09-29

申请号：US14137358

申请日：2013-12-20

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang ,  Ying Chen

IPC: H04N11/02 ,  H04N13/161 ,  H04N19/70 ,  H04N5/76 ,  H04N9/804 ,  H04N19/597 ,  H04N19/46 ,  H04N9/82 ,  H04N5/919 ,  H04N19/44 ,  H04N5/765

Abstract: Techniques for encapsulating video streams containing multiple coded views in a media file are described herein. In one example, a method includes parsing a track of multiview video data, wherein the track includes at least one depth view. The method further includes parsing information to determine a spatial resolution associated with the depth view, wherein decoding the spatial resolution does not require parsing of a sequence parameter set of the depth view. Another example method includes composing a track of multiview video data, wherein the track includes the one or more views. The example method further includes composing information to indicate a spatial resolution associated with the depth view, wherein decoding the spatial resolution does not require parsing of a sequence parameter set of the depth view.

公开(公告)号：US10687055B2

公开(公告)日：2020-06-16

申请号：US15909395

申请日：2018-03-01

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang

IPC: H04N19/169 ,  H04N19/174 ,  H04N19/137 ,  H04N19/105 ,  H04N19/70 ,  H04N19/184 ,  H04N19/46 ,  H04N19/55 ,  H04N19/176 ,  H04N19/587 ,  H04N19/31

Abstract: An example device for processing video data includes a memory configured to store video data; and one or more processors implemented in circuitry and configured to determine whether an access unit of the video data includes a temporal motion constrained tile sets (MCTS) supplemental enhancement information (SEI) message; and decode an MCTS extraction information set (MCTS-EIS) SEI message of the access unit only when the access unit includes the temporal MCTS SEI message.

公开(公告)号：US10547834B2

公开(公告)日：2020-01-28

申请号：US14590914

申请日：2015-01-06

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang

IPC: H04N19/33 ,  H04N19/39 ,  H04N19/29 ,  H04N19/105 ,  H04N19/136 ,  H04N19/187 ,  H04N19/70 ,  H04N19/59 ,  H04N19/30

Abstract: An apparatus configured to decode video information includes a memory and a processor in communication with the memory. The memory is configured to a memory configured to store video information associated with bitstream. The apparatus further includes a processor in communication with the memory, the processor configured to determine that a reference layer is not included in the bitstream and to receive, from an external source, a decoded base layer picture. The processor is further configured to receive, from the external source, a first indication that the picture is an intra random access point (IRAP) picture. The processor is also configured to receive a second indication whether the picture is one of an instantaneous decoder refresh (IDR) picture, a clean random access (CRA) picture, or a broken link access (BLA) picture; and to decode the video information based at least in part on the first and second indications.

公开(公告)号：US10455242B2

公开(公告)日：2019-10-22

申请号：US14638518

申请日：2015-03-04

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang

IPC: H04N19/30 ,  H04N19/597

Abstract: Techniques are described for sending output indications in codec-hybrid multi-layer video coding, in which a base layer of video data is provided by an external system and conforms to a different video codec standard than one or more enhancement layers of the video data. An enhancement layer video decoder receives an enhancement layer bitstream that includes at least one enhancement layer to be decoded, an indication that the base layer is provided externally, and an indication of which layers are target output layers to be output for display. The external system does not receive a target output layer indication in a base layer bitstream. The disclosed techniques enable the enhancement layer video decoder, when the base layer is provided by the external system, to send an output indication to the external system indicating whether the base layer or specific base layer decoded pictures need to be output for display.

公开(公告)号：US10284842B2

公开(公告)日：2019-05-07

申请号：US14194159

申请日：2014-02-28

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan Ramasubramonian ,  Ying Chen ,  Xiang Li ,  Ye-Kui Wang

IPC: H04N19/105 ,  H04N19/597 ,  H04N19/30 ,  H04N19/513 ,  H04N19/187 ,  H04N19/39 ,  H04N19/167 ,  H04N19/577

Abstract: A method of coding video data includes upsampling at least a portion of a reference layer picture to an upsampled picture having an upsampled picture size. The upsampled picture size has a horizontal upsampled picture size and a vertical upsampled picture size. At least one of the horizontal or vertical upsampled picture sizes may be different than a horizontal picture size or vertical picture size, respectively, of an enhancement layer picture. In addition, position information associated with the upsampled picture may be signaled. An inter-layer reference picture may be generated based on the upsampled picture and the position information.

公开(公告)号：US20190014362A1

公开(公告)日：2019-01-10

申请号：US16030585

申请日：2018-07-09

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang ,  Thomas Stockhammer

IPC: H04N21/236 ,  H04N21/2343

Abstract: A device for processing media content can be configured to obtain, from a region-wise packing box within a video file, a first set of values that indicate a first size and first position for a first packed region of media content and a second set of values that indicate a second size and second position for a second packed region of the media content, wherein the first set of values and the second set of values are in relative units to an upper-left corner luma sample of an unpacked; unpack the first packed region to produce a first unpacked region; form a first projected region from the first unpacked region; unpack the second packed region to produce a second unpacked region; and form a second projected region from the second unpacked region, the second projected region being different than the first projected region.