中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

221 records (took 0.073 seconds)

    METHODS AND DEVICES FOR ADAPTING THE RATE OF VIDEO CONTENT STREAMING
    3.
    发明申请
    METHODS AND DEVICES FOR ADAPTING THE RATE OF VIDEO CONTENT STREAMING 审中-公开

    公开(公告)号：US20190379875A1

    公开(公告)日：2019-12-12

    申请号：US16001418

    申请日：2018-06-06

    Applicant: AT&T Intellectual Property I, L.P. ,  THE TRUSTEES OF INDIANA UNIVERSITY

    Inventor： Vijay Gopalakrishnan ,  Bo Han ,  Jackson Jarrell Pair ,  Vikash Sharma ,  Feng Qian

    IPC: H04N13/161 ,  H04N19/30 ,  H04N13/366

    Abstract: Aspects of the subject disclosure may include, for example, identifying FOV and OOS tiles of the video content. The FOV and OOS tiles are received from a video server. The FOV and OOS tiles are encoded using AVC and a first layer of SVC, respectively. Further embodiments include providing the FOV and OOS tiles for presentation on a display, detecting a change in a field of vision, and identifying other FOV tiles of the video content, which comprise a portion of the OOS tiles. Also, embodiments include requesting the portion of the OOS tiles and receiving the portion of the OOS tiles from the video server over the communication network, which are encoded using an enhancement layer of SVC and then provided, to the display, according the enhancement layer in conjunction with the providing of the OOS tiles according to the first layer. Other embodiments are disclosed.

    Priority-based tile transmission system and method for panoramic video streaming
    4.
    发明授权
    Priority-based tile transmission system and method for panoramic video streaming 有权

    公开(公告)号：US10826964B2

    公开(公告)日：2020-11-03

    申请号：US16122584

    申请日：2018-09-05

    Applicant: AT&T Intellectual Property I, L.P. ,  THE TRUSTEES OF INDIANA UNIVERSITY

    Inventor： Bo Han ,  Vijay Gopalakrishnan ,  Zhengye Liu ,  Feng Qian

    IPC: H04L29/06 ,  H04N21/845 ,  H04N19/37 ,  H04N21/81

    Abstract: Aspects of the subject disclosure may include, for example, a device that includes a processing system with a processor, a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations, the operations including receiving a request that identifies a first list of tiles for streaming a panoramic video, determining a first total number of data packets required to transmit tiles in the first list of tiles, maintaining a second total number of empty data packets enqueued into a transport control protocol (TCP) buffer, maintaining a third total number of empty data packets dequeued from the TCP buffer, and enqueuing empty data packets into the TCP buffer whenever the first total number of data packets is greater than a difference between the second total number of empty data packets and the third total number of empty data packets. Other embodiments are disclosed.

    Methods, systems and devices for adjusting panoramic video content
    7.
    发明授权
    Methods, systems and devices for adjusting panoramic video content 有权

    公开(公告)号：US10708494B2

    公开(公告)日：2020-07-07

    申请号：US16102270

    申请日：2018-08-13

    Applicant: AT&T Intellectual Property I, L.P. ,  The Trustees of Indiana University

    Inventor： Bo Han ,  Shuai Hao ,  Vijay Gopalakrishnan ,  Feng Qian

    IPC: H04N5/00 ,  H04N5/232 ,  H04N19/119 ,  H04N19/164 ,  G06K9/00

    Abstract: Aspects of the subject disclosure may include, for example, embodiments for capturing video content with a camera. The camera is communicatively coupled to the device. Further embodiments include obtaining a network condition of a communication network. Additional embodiments include determining a network criterion according to the network condition. Also, embodiments include calculating a threshold according to the network criterion. Further embodiments include adjusting the video content in response to determining network criterion resulting in adjusted video content. Additional embodiments include determining that a first portion of the adjusted video content satisfies the threshold. Also, embodiments include transmitting the adjusted video content to a video content server over the communication network. Other embodiments are disclosed.

    Proxy Assisted Panoramic Video Streaming at Mobile Edge
    8.
    发明申请
    Proxy Assisted Panoramic Video Streaming at Mobile Edge 有权

    公开(公告)号：US20220353557A1

    公开(公告)日：2022-11-03

    申请号：US17859107

    申请日：2022-07-07

    Applicant: AT&T Intellectual Property I, L.P.

    Inventor： Bo Han ,  Vijay Gopalakrishnan ,  Rittwik Jana

    IPC: H04N21/231 ,  H04N21/222 ,  H04N21/234 ,  H04N21/258 ,  H04N21/218

    Abstract: Aspects of the subject disclosure may include, for example, system for tile-based video streaming using a proxy executing at a mobile edge cloud, which adaptively offloads decoding and merging of video tiles from mobile devices to the mobile edge cloud. A processing system including the proxy communicates with a video server and a client device. The proxy receives a request for video content from a client device; the request includes historical field of view (FoV) information. The proxy predicts a client FoV, requests video tiles from the server, downloads the tiles from the server, generates a video chunk by decoding and merging the downloaded tiles, and delivers the video chunk to the client device. The client device performs local decoding and rendering of the generated video chunk. Other embodiments are disclosed.

    VIEWPORT-BASED TRANSCODING FOR IMMERSIVE VISUAL STREAMS
    9.
    发明申请
    VIEWPORT-BASED TRANSCODING FOR IMMERSIVE VISUAL STREAMS 有权

    公开(公告)号：US20220337831A1

    公开(公告)日：2022-10-20

    申请号：US17810636

    申请日：2022-07-04

    Applicant: AT&T Intellectual Property I, L.P.

    Inventor： Bo Han ,  Tan Xu ,  Zhengye Liu

    IPC: H04N19/119 ,  H04N19/20 ,  H04N19/597 ,  G06N20/00 ,  H04N19/176 ,  G06N5/04 ,  H04N19/162

    Abstract: In one example, a processing system including at least one processor may obtain a predicted viewport of a mobile computing device for an immersive visual stream, identify a first plurality of blocks of a frame of the immersive visual stream that are associated with the predicted viewport, encode the first plurality of blocks at a first encoding quality level, and encode a second plurality of blocks of the frame at a second encoding quality level, where the second encoding quality level is associated with a lesser visual quality as compared to the first encoding quality level and where the second plurality of blocks are outside of the predicted viewport. The processing system may then transmit the frame having the first plurality of blocks encoded at the first encoding quality level and the second plurality of blocks encoded at the second encoding quality level to the mobile computing device.

    Adaptive field of view prediction
    10.
    发明授权
    Adaptive field of view prediction 有权

    公开(公告)号：US11470360B2

    公开(公告)日：2022-10-11

    申请号：US17301719

    申请日：2021-04-12

    Applicant: AT&T Intellectual Property I, L.P.

    Inventor： Bo Han ,  Vijay Gopalakrishnan ,  Tan Xu

    IPC: H04N21/218 ,  G06F3/01 ,  G06F3/04815 ,  H04N19/597 ,  G06N20/20 ,  H04N19/17

    Abstract: A method for streaming a 360 degree video over a communications network, wherein the video is streamed in a plurality of chunks, includes selecting a prediction window during which to predict a field of view within the video, the field of view is expected to be visible by a viewer at a time of playback of a next chunk of the video, wherein a duration of the prediction window is based on at least one condition within the communications network, selecting a machine learning algorithm to predict the field of view based on a head movement of the viewer, wherein the machine learning algorithm is selected based on the duration of the prediction window, predicting the field of view based on the head movement of the viewer and the machine learning algorithm, identifying a tile of the next chunk that corresponds to the field of view, and downloading the tile.

Patent Agency Ranking