Patents by Inventor Kui Wang

Kui Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Wavefront parallel processing for video coding
    Patent number: 9838684
    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.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: December 5, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Muhammed Zeyd Coban, Ye-Kui Wang, Marta Karczewicz
  • Multi-layer video coding
    Patent number: 9838697
    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.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: December 5, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Ye-Kui Wang, Fnu Hendry, Adarsh Krishnan Ramasubramonian
  • VIRTUAL REALITY VIDEO SIGNALING IN DYNAMIC ADAPTIVE STREAMING OVER HTTP
    Publication number: 20170347163
    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.
    Type: Application
    Filed: May 23, 2017
    Publication date: November 30, 2017
    Inventor: Ye-Kui Wang
  • ADVANCED SIGNALING OF A MOST-INTERESTED REGION IN AN IMAGE
    Publication number: 20170344843
    Abstract: A device for determining information for video data includes one or more processors implemented in circuitry that are configured to determine one or more most-interested regions of a plurality of regions of an image of video data from data representative of the one or more most-interested regions. The one or more processors are further configured to generate a request specifying the one or more most-interested regions using the data representative of the one or more most-interested regions and output the request to a server device.
    Type: Application
    Filed: May 10, 2017
    Publication date: November 30, 2017
    Inventors: Ye-Kui Wang, Fnu Hendry
  • SAMPLE ENTRIES AND RANDOM ACCESS
    Publication number: 20170347166
    Abstract: In one example, a device for retrieving video data includes one or more processors configured to receive data describing a sample entry type for a sample of a video bitstream, the sample entry type being one of ‘hev1’ or ‘hev2,’ wherein the sample comprises video data encoded according to one of High-Efficiency Video Coding (HEVC) or layered HEVC (L-HEVC), and wherein one or more other samples including video data precede the sample in the video bitstream in decoding order, and in response to the sample entry type being ‘hev1’ or ‘hev2’ and the sample comprising the video data encoded according to one of HEVC or L-HEVC, retrieve the sample to perform random access using the sample, without retrieving the video data of any of the one or more other samples that precede the sample, and without retrieving parameter sets of any previous samples of the video bitstream in decoding order.
    Type: Application
    Filed: May 23, 2017
    Publication date: November 30, 2017
    Inventor: Ye-Kui Wang
  • MAPPING OF TILE GROUPING AND SAMPLES IN HEVC AND L-HEVC FILE FORMATS
    Publication number: 20170347109
    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.
    Type: Application
    Filed: May 23, 2017
    Publication date: November 30, 2017
    Inventors: Fnu Hendry, Ye-Kui Wang
  • SAMPLE ENTRIES AND RANDOM ACCESS
    Publication number: 20170347165
    Abstract: In one example, a device for retrieving video data includes one or more processors configured to, in response to determining that a lowest track of a plurality of tracks, the lowest track including a base layer of the video data carrying a lowest sub-layer of the video data, is to include sample entry type values for samples indicating that convenient random access is enabled, set sample entry type values for samples of each of the other tracks of the plurality of tracks that include video data to indicate that convenient random access is enabled, and generate a file including the plurality of tracks, such that the sample entry type values for the tracks of the plurality of tracks indicate that convenient random access is enabled.
    Type: Application
    Filed: May 23, 2017
    Publication date: November 30, 2017
    Inventor: Ye-Kui Wang
  • Support of base layer of a different codec in multi-layer video coding
    Patent number: 9832481
    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.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: November 28, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Ye-Kui Wang, Jianle Chen, Ying Chen, Fnu Hendry
  • MOST-INTERESTED REGION IN AN IMAGE
    Publication number: 20170339415
    Abstract: A device for determining information for video data includes one or more processors implemented in circuitry that are configured to determine one or more most-interested regions of a plurality of regions of an image of video data based on data representative of the one or more most-interested regions. The data representative of the one or more most-interested regions is external to video coding layer (VCL) data of a bitstream including the video data. The processors output a request for relatively high-quality video data for the one or more most-interested regions of the image and output, after outputting the request for the relatively high-quality video data, a request for relatively low-quality video data for one or more other regions of the image.
    Type: Application
    Filed: May 8, 2017
    Publication date: November 23, 2017
    Inventors: Ye-Kui Wang, Fnu Hendry
  • CIRCULAR FISHEYE VIDEO IN VIRTUAL REALITY
    Publication number: 20170339392
    Abstract: Provided are systems, methods, and computer-readable medium for including parameters that describe fisheye images in a 360-degree video with the 360-degree video. The 360-degree video can then be stored and/or transmitted as captured by the omnidirectional camera, without transforming the fisheye images into some other format. The parameters can later be used to map the fisheye images to an intermediate format, such as an equirectangular format. The intermediate format can be used to store, transmit, and/or display the 360-degree video. The parameters can alternatively or additionally be used to map the fisheye images directly to a format that can be displayed in a 360-degree video presentation, such as a spherical format.
    Type: Application
    Filed: April 24, 2017
    Publication date: November 23, 2017
    Inventors: Bijan Forutanpour, Ye-Kui Wang, Phi Hung Nguyen, Ning Bi
  • CLASSIFIED MEDIA QUALITY OF EXPERIENCE
    Publication number: 20170339208
    Abstract: A method for reporting a streaming quality is shown, wherein at least one continuous media stream is streamed to a client (601), and wherein the streaming is controlled by a protocol (109) that is operated between the client (601) and a server (600), the method including selecting at least one quality metric and a quality metrics class from a pre-defined set of at least two quality metrics classes, and reporting to the server (600) the quality of the streaming based on the at least one selected quality metric and the selected quality metrics class. The protocol (109) is preferably a Real-time Streaming Protocol (RTSP) in combination with a Session Description Protocol (SDP) in the context of the 3GPP Packet-Switched Streaming Service (PSS). Also shown is a computer program, a computer program product, a system, a client, a server and a protocol.
    Type: Application
    Filed: March 31, 2017
    Publication date: November 23, 2017
    Inventor: Ye-Kui WANG
  • REGIONAL RANDOM ACCESS IN PICTURES
    Publication number: 20170339416
    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.
    Type: Application
    Filed: May 18, 2017
    Publication date: November 23, 2017
    Inventors: Fnu Hendry, Ye-Kui Wang
  • END OF SEQUENCE AND END OF BITSTREAM NAL UNITS IN SEPARATE FILE TRACKS
    Publication number: 20170339421
    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.
    Type: Application
    Filed: May 22, 2017
    Publication date: November 23, 2017
    Inventor: Ye-Kui Wang
  • Support of non-HEVC base layer in HEVC multi-layer extensions
    Patent number: 9826232
    Abstract: An apparatus configured to decode video information includes a memory and a processor in communication with the memory. The memory is configured to store video information associated with a 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. The processor is further configured to receive, from an external source, a decoded base layer picture associated with an access unit, to store the decoded base layer picture in a memory. The processor is further configured to decode pictures associated with the access unit based on the stored decoded base layer picture, and subsequent to decoding the pictures associated with the access unit, empty the decoded base layer picture from the memory.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: November 21, 2017
    Assignee: QUALCOMM Incorporated
    Inventor: Ye-Kui Wang
  • Signaling for sub-decoded picture buffer (sub-DPB) based DPB operations in video coding
    Patent number: 9819941
    Abstract: A method of decoding video data including receiving an encoded video bitstream that includes a plurality of pictures and storing the plurality of pictures in one or more sub-DPBs. The method further including receiving a respective set of sub-DPB parameters for each respective operation point of the encoded video bitstream. applying the respective set of sub-DPB parameters to all layers of an output layer set for each respective operation point, and performing a sub-DPB management process on the one or more sub-DPBs in accordance with the received respective single sets of sub-DPB parameters.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: November 14, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Adarsh Krishnan Ramasubramonian, Ye-Kui Wang
  • Multi-layer video coding
    Patent number: 9819945
    Abstract: A device for processing 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 generate a first video coding layer (VCL) network abstraction layer (NAL) unit for a first picture of an access unit, the first VCL NAL unit comprising a first slice type; generate a second VCL NAL unit for a second picture of the access unit, the second VCL NAL unit comprising a second slice type; and generate an access unit delimiter (AUD) NAL unit based on the first and second slice types.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: November 14, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Ye-Kui Wang, Fnu Hendry, Adarsh Krishnan Ramasubramonian
  • Signaling HRD parameters for bitstream partitions
    Patent number: 9819948
    Abstract: In one example, a device for coding (e.g., encoding or decoding) video data includes a memory configured to store video data, and a video coder configured to code a value for a syntax element that indicates a number of sub-layers of a bitstream for which hypothetical reference decoder (HRD) parameters are coded, wherein the value indicates that the number of sub-layers for which HRD parameters are coded is less than a maximum number of sub-layers indicated by a video parameter set (VPS) of the bitstream, code HRD parameters for the number of sub-layers as indicated by the value for the syntax element, and process the bitstream using the HRD parameters.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: November 14, 2017
    Assignee: QUALCOMM Incorporated
    Inventor: Ye-Kui Wang
  • SPECIFYING MEDIA CONTENT PLACEMENT CRITERIA
    Publication number: 20170323307
    Abstract: To control advertisement or other media content placement in content, content owners or other interested parties may include ad or media content placement metadata in the content item. Media content placement metadata may provide specifications such as a maximum media content (e.g., ad) duration, media content rating, media content size, payment information, placement location on a screen (i.e., for videos or images) and the like. The media content metadata may be extracted and used to retrieve matching media content such as advertisements for inclusion during play of a corresponding content item.
    Type: Application
    Filed: May 24, 2017
    Publication date: November 9, 2017
    Inventors: Jaakko Juhani TEINILA, Jyrki Tauno Johannes PORIO, Ye-Kui WANG
  • Parameter set coding
    Patent number: 9813705
    Abstract: Systems, methods, and devices for processing video data are disclosed. Some examples relate to receiving or forming a parameter set having an identifier that is fixed length coded, wherein a parameter set identification (ID) for the parameter set is before any syntax element in the parameter set that is entropy coded and using the parameter set having the identifier that is fixed length coded to decode or encode video data. Other examples determine whether a first parameter set ID of a first parameter set of a first bitstream is the same as a second parameter set ID of a second parameter set of a second bitstream. In response to determining that the second parameter set ID is the same as the first parameter set ID, changing the second parameter set ID to a unique parameter set ID. A parameter set associated with the unique parameter set ID may be transmitted.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: November 7, 2017
    Assignee: QUALCOMM Incorporated
    Inventor: Ye-Kui Wang
  • Signaling HRD parameters for bitstream partitions
    Patent number: 9813719
    Abstract: In one example, a device for coding (e.g., encoding or decoding) video data includes a memory configured to store video data, and a video coder configured to code hypothetical reference decoder (HRD) parameters for each sub-layer of each bitstream partition of a video bitstream; and process the video bitstream using the HRD parameters. The video coder may code the HRD parameters in the form of a loop over the HRD parameters that is iterated for each of the sub-layers, and/or indexes to respective sets of HRD parameters for each of the sub-layers.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: November 7, 2017
    Assignee: QUALCOMM Incorporated
    Inventor: Ye-Kui Wang