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公开(公告)号：US20210051306A1
公开(公告)日：2021-02-18
申请号：US16713172
申请日：2019-12-13
Inventor： Bo Han , Wenxiao Zhang , Pan Hui , Tan Xu , Cheuk Yiu Ip
IPC: H04N13/117 , H04N13/194 , H04N13/282 , H04N13/161
Abstract: Aspects of the subject disclosure may include, for example, a device in which a processing system receives from a multimedia content server a plurality of content streams; each of the content streams includes a portion of an original content stream. The processing system transcodes the plurality of content streams based on a viewport prediction to produce a plurality of viewport streams; the viewport prediction is based at least in part on a visibility map associated with a viewer of the content. The processing system delivers each of the viewport streams to a client device associated with the viewer; each of the viewport streams is buffered at the client device in a separate buffer. Other embodiments are disclosed.
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公开(公告)号：US20210021888A1
公开(公告)日：2021-01-21
申请号：US16513780
申请日：2019-07-17
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Bo Han , Zhengye Liu , Chenfei Gao
IPC: H04N21/422 , H04N21/81 , H04N21/466 , H04N21/458 , H04N21/44
Abstract: Aspects of the subject disclosure may include, for example, obtaining one or more signals, the one or more signals being based upon brain activity of a viewer while the viewer is viewing media content; predicting, based upon the one or more signals, a first predicted desired viewport of the viewer; obtaining head movement data associated with the media content; predicting, based upon the head movement data, a second predicted desired viewport of the viewer; comparing the first predicted desired viewport to the second predicted desired viewport, resulting in a comparison; and determining, based upon the comparison, to use the first predicted desired viewport to facilitate obtaining a first subsequent portion of the media content or to use the second predicted desired viewport to facilitate obtaining a second subsequent portion of the media content. Other embodiments are disclosed.
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公开(公告)号：US10834163B2
公开(公告)日：2020-11-10
申请号：US16371287
申请日：2019-04-01
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Bo Han , Sassan Pejhan , Vijay Gopalakrishnan
Abstract: Aspects of the subject disclosure may include, for example, obtaining live video content from equipment of a media content provider, determining priority content within the live video content; segmenting the live video content into a plurality of tiles according to the priority content, and transcoding the live video content according to a type of client device. Further embodiments include determining an encoding schedule for the plurality of tiles according to the priority content, encoding the plurality of tiles according to the encoding schedule, and providing the plurality of tiles to the client device. Other embodiments are disclosed.
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公开(公告)号：US10812774B2
公开(公告)日：2020-10-20
申请号：US16001418
申请日：2018-06-06
Inventor： Vijay Gopalakrishnan , Bo Han , Jackson Jarrell Pair , Vikash Sharma , Feng Qian
IPC: H04N13/161 , H04N19/30 , H04N13/366 , H04N19/187 , H04N19/176 , H04N19/167 , H04N19/119
Abstract: Aspects of the subject application 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 described herein.
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公开(公告)号：US10805044B2
公开(公告)日：2020-10-13
申请号：US16284936
申请日：2019-02-25
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Zhengye Liu , Xidong Wu , Jin Wang , Bo Han
Abstract: Devices, computer-readable media, and methods for selecting a type of packet loss protection for a network-based communication based upon a latency estimate are disclosed. For example, a processing system including at least one processor may obtain a latency estimate for a network-based communication, determine whether the latency estimate exceeds a latency threshold for selecting a type of packet loss protection, and select, the type of packet loss protection for the network-based communication from among a first type of packet loss protection and a second type of packet loss protection based upon the determining. When the latency estimate is determined to not exceed the latency threshold, the first type of packet loss protection is selected. When the latency estimate is determined to exceed the latency threshold, the second type of packet loss protection is selected.
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Patent Agency Ranking
公开(公告)号：US20200322748A1
公开(公告)日：2020-10-08
申请号：US16907359
申请日：2020-06-22
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Bo Han , Manuel Briand , Vijay Gopalakrishnan
IPC: H04S7/00 , H04N21/233 , H04N21/218
Abstract: Aspects of the subject disclosure may include, for example, a method for spherical video streaming over a network by a processing system including a processor, the method including prefetching audio data for rendering the spherical video; determining whether there is a single source or a plurality of sources of audio in the audio data; responsive to a determination that there is only one dominant source of the audio in the audio data, prefetching video data in a field of view centered on spatial coordinates of the dominant source of audio; responsive to a determination that there is the plurality of sources of the audio in the audio data, sorting the plurality of sources of the audio according to an estimated sound source energy for each source in the plurality of sources, thereby creating a sorted list of the plurality of sources; and prefetching video data in plural fields of view centered on spatial coordinates of each audio source in the sorted list of the plurality of sources, wherein the prefetching is performed in an order corresponding to the sorted list, and wherein the prefetching occurs within an available bandwidth of the network. Other embodiments are disclosed.
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公开(公告)号：US10779040B2
公开(公告)日：2020-09-15
申请号：US16136880
申请日：2018-09-20
Applicant: AT&T Intellectual Property I, L.P.
IPC: H04N5/445 , H04N21/454 , H04N21/81 , H04N21/442 , H04N21/24 , H04N21/262 , H04N21/234 , H04N21/472 , H04N21/433
Abstract: Aspects of the subject disclosure may include, for example, a method comprising determining whether a skippable advertisement is being streamed preceding a requested video; responsive to determining that the skippable advertisement is being streamed, initiating a skippable advertisement procedure, wherein the skippable advertisement procedure comprises streaming a first portion of the skippable advertisement without imposing constraints and streaming a second portion of the skippable advertisement imposing constraints; responsive to receiving a request to skip the skippable advertisement, ceasing the streaming the second portion of the skippable advertisement and initiating streaming of the requested video without imposing constraints. Other embodiments are disclosed.
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公开(公告)号：US10708494B2
公开(公告)日：2020-07-07
申请号：US16102270
申请日：2018-08-13
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.
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公开(公告)号：US10699154B2
公开(公告)日：2020-06-30
申请号：US16058534
申请日：2018-08-08
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Bo Han , Tan Xu , Cheuk Yiu Ip
IPC: G06K9/46 , G06K9/32 , G06F3/01 , H04N13/117 , H04N5/232
Abstract: Aspects of the subject disclosure may include, for example, a method performed by a processing system of determining a present orientation of a display region presented at a first time on a display of a video viewer, predicting a future orientation of the display region occurring at a second time based on data collected, to obtain a predicted orientation of the display region to be presented at the second time on the display of the video viewer, identifying, based on the predicted orientation of the display region, a first group of tiles from a video frame of a panoramic video being displayed by the video viewer, wherein the first group of tiles covers the display region in the video frame at the predicted orientation, and a plurality of objects moving in the video frame from the first time to the second time, wherein each object of the plurality of objects is located in a separate spatial region of the video frame at the second time, wherein a second group of tiles collectively covers the separate spatial regions, wherein tiles in the first group of tiles and tiles in the second group of tiles are different, and facilitating wireless transmission of the first group of tiles and a second tile from the second group of tiles, for presentation at the video viewer at the second time. Other embodiments are disclosed.
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公开(公告)号：US20200068235A1
公开(公告)日：2020-02-27
申请号：US16109892
申请日：2018-08-23
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Bo Han , Vijay Gopalakrishnan , Rittwik Jana
IPC: H04N21/231 , H04N21/222 , H04N21/218 , H04N21/234 , H04N21/258
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.
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