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公开(公告)号：US20240333985A1
公开(公告)日：2024-10-03
申请号：US18126838
申请日：2023-03-27
Applicant: ROKU, INC.
Inventor： RODRIGO EMILIANO TOCALINI , Andrey Marsavin , Govind Vaidya , Robert Fitzgerald Watts , Wim Michiels
IPC: H04N21/233 , H04N21/2662
CPC classification number: H04N21/2335 , H04N21/2662
Abstract: Disclosed herein are system, apparatus, article of manufacture, method and/or computer program product embodiments, and/or combinations and sub-combinations thereof, for performing adaptive audio bitrate selection. An example embodiment operates by receiving a data streaming request. The embodiment then streams data at a first audio bitrate. The embodiment then determines whether there is a streaming discontinuity associated with the data. The embodiment then determines, in response to the determination that there is a streaming discontinuity, whether a network condition satisfies one or more conditions based on one or more streaming parameters. The embodiment then, in response to the determination that the network condition satisfies the one or more conditions, adjusts the first audio bitrate to a second audio bitrate during the streaming discontinuity. The embodiment then continues to stream the data, subsequent to the streaming discontinuity, at the second audio bitrate to complete the data streaming request.
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2.发明公开
公开(公告)号：US20240187699A1
公开(公告)日：2024-06-06
申请号：US18440914
申请日：2024-02-13
Inventor： Adrian MURTAZA , Harald FUCHS , Bernd CZELHAN , Jan PLOGSTIES
IPC: H04N21/4728 , G06F3/16 , H04N19/167 , H04N21/218 , H04N21/233 , H04N21/2343 , H04N21/235 , H04N21/2368 , H04N21/442 , H04N21/845
CPC classification number: H04N21/4728 , G06F3/167 , H04N19/167 , H04N21/21805 , H04N21/2335 , H04N21/234309 , H04N21/234318 , H04N21/2353 , H04N21/2368 , H04N21/44218 , H04N21/8456
Abstract: A method and a system for virtual reality, augmented reality, mixed reality, or 360-degree Video environment is disclosed. The system receives Video Streams associated to audio and video scenes to be reproduced and Audio Streams associated to audio and video scenes to be reproduced. There are provided a Video decoder which decodes signal from the Video Stream for the representation of the audio and video scene; an Audio decoder which decodes signal from the Audio Stream for the representation of the audio and video scene to the user; and a region of interest processor deciding, based e.g. on the user's viewport, head orientation, movement data, or metadata, whether an Audio information message is to be reproduced. At the decision, the reproduction of the Audio information message is caused.
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公开(公告)号：US11843818B2
公开(公告)日：2023-12-12
申请号：US17838850
申请日：2022-06-13
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Jin Heo , Keunha Choi , Wonki Kim
IPC: H04N21/43 , H04N21/442 , H04L65/70 , H04N21/234 , H04N21/233
CPC classification number: H04N21/4302 , H04L65/70 , H04N21/234 , H04N21/2335 , H04N21/44209
Abstract: An example electronic device according to various embodiments of this document may include: at least one auxiliary processor; and a main processor operably connected to the at least one auxiliary processor, wherein the main processor may be configured to: obtain moving image data; separate the moving image data into image data including plural consecutive image frames, first audio data including plural consecutive audio frames, and plural timestamps corresponding respectively to the plural consecutive audio frames; generate second audio data using the first audio data by adding header data to each of the plural audio frames; transmit the second audio data to the at least one auxiliary processor; generate, based on first time information successively received from the at least one auxiliary processor, second time information; and play back the image data based on the second time information, and wherein the at least one auxiliary processor may be configured to: play back an audio signal based on the received second audio data; and generate the first time information about a playback time of the audio signal based on the header data.
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公开(公告)号：US20230388565A1
公开(公告)日：2023-11-30
申请号：US18447279
申请日：2023-08-09
Inventor： Bernd CZELHAN , Harald FUCHS , Ingo HOFMANN , Herbert THOMA , Stephan SCHREINER
IPC: H04N21/242 , H04N21/234 , H04N21/2343 , H04N21/845 , G10L19/16 , G10L25/57 , H04N21/233 , H04N19/40
CPC classification number: H04N21/242 , H04N21/23424 , H04N21/23439 , H04N21/8456 , G10L19/167 , G10L25/57 , H04N21/2335 , H04N19/40 , G10L21/055
Abstract: Audio video synchronization and alignment or alignment of audio to some other external clock are rendered more effective or easier by treating fragment grid and frame grid as independent values, but, nevertheless, for each fragment the frame grid is aligned to the respective fragment's beginning. A compression effectiveness lost may be kept low when appropriately selecting the fragment size. On the other hand, the alignment of the frame grid with respect to the fragments' beginnings allows for an easy and fragment-synchronized way of handling the fragments in connection with, for example, parallel audio video streaming, bitrate adaptive streaming or the like.
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公开(公告)号：US11792469B2
公开(公告)日：2023-10-17
申请号：US15625069
申请日：2017-06-16
Applicant: Comcast Cable Communications, LLC
Inventor： Benyuan Zhang
IPC: H04N21/233 , H04N21/433 , H04N21/234 , H04N21/2343 , H04N21/24 , H04N21/262 , H04N21/2662 , H04N21/274
CPC classification number: H04N21/4334 , H04N21/233 , H04N21/234 , H04N21/2335 , H04N21/2343 , H04N21/23439 , H04N21/234309 , H04N21/2408 , H04N21/2662 , H04N21/26208 , H04N21/274
Abstract: A system may receive a plurality of requests to record a plurality of programs. Based on these requests, resources may be provisioned for transcoding variable bit rate streams into constant bit rate streams. Resources may be provisioned based on assigning transcoding tasks to an existing set of deployed devices in which the transcoding tasks correspond to the plurality of requests. Resources may further be provisioned based on incrementally deploying an additional device to the existing set of deployed devices when the transcoding capacity reaches a certain level.
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公开(公告)号：US20190191224A1
公开(公告)日：2019-06-20
申请号：US16254606
申请日：2019-01-23
Applicant: DISH Network L.L.C.
Inventor： Nicholas B. Newell , Sheshank Kodam
IPC: H04N21/81 , H04N21/84 , H04N21/233 , G06F17/27 , G10L15/26 , H04N21/8547 , G06F17/28 , H04N21/234 , H04N21/235
CPC classification number: H04N21/8106 , G06F17/2785 , G06F17/28 , G10L15/26 , G10L15/265 , H04N21/2335 , H04N21/23412 , H04N21/23418 , H04N21/234336 , H04N21/2353 , H04N21/4307 , H04N21/84 , H04N21/8547
Abstract: Disclosed herein are systems and methods for converting audio-video content into audio-only content. Audio-video content is readily accessible, but for various reasons users often cannot consume content visually. In those circumstances, for example, when a user is interrupted during a movie to drive to pick up a spouse or child, the user may not want to forego consuming the audio-video content. The audio-video content can be converted into audio only content for the user to aurally consume, allowing the user to consume the content despite interruptions or other reasons for which the audio-video content cannot be consumed visually.
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7.发明申请
公开(公告)号：US20180367868A1
公开(公告)日：2018-12-20
申请号：US15669935
申请日：2017-08-06
Applicant: M/S. Amagi Media Labs Pvt. Ltd
Inventor： Shashidhar Banger
IPC: H04N21/8358 , H04N21/81 , H04N21/2389 , H04N21/233 , H04N21/2343 , H04N21/439 , H04N21/4402 , G10L19/018
CPC classification number: H04N21/8358 , G06Q30/0254 , G10L19/018 , H04L65/4076 , H04L65/80 , H04N21/2335 , H04N21/2343 , H04N21/23892 , H04N21/4398 , H04N21/4402 , H04N21/812
Abstract: A system for low-latency detection of known audio-video content in multiple audio-video streams, received over a transport multiplex wherein multiple advertisements of different durations are being transmitted over a network. The system includes an ingest module, repositories of content assets, repositories of advertisement assets, a playout server, and network streams. A Watermarking and Fingerprinting (WMFP) module receives multiple advertisements A having audio-video streams, from a Master AV Database, placing an audio watermark on the incoming streams and extracting a high-confidence fingerprint (signature) from each of the watermarked assets A′. Communicating fingerprint signatures and replacement rules to one or more receivers over the Internet. One or more receivers at different locations actively replace detected advertisements having AV content, using a signature detector, with local content assets. The system provides a high confidence match without the disadvantage of an extended and expensive extraction time or false matches.
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8.发明申请
公开(公告)号：US20180192022A1
公开(公告)日：2018-07-05
申请号：US15860471
申请日：2018-01-02
Applicant: Black Sails Technology Inc.
Inventor： Zhuo Wang , Yongtao Tang , Ruoxi Zhao , Haoyan Zu , Chia-Chi Chang
IPC: H04N13/00
CPC classification number: H04N13/398 , G06F3/011 , G06F3/012 , G06T3/40 , G06T9/001 , G06T15/04 , G06T15/205 , G06T2215/16 , H04L43/0888 , H04L65/601 , H04L67/38 , H04N5/76 , H04N9/8715 , H04N13/117 , H04N13/122 , H04N13/139 , H04N13/161 , H04N13/189 , H04N13/275 , H04N13/332 , H04N13/344 , H04N13/378 , H04N13/383 , H04N19/40 , H04N19/44 , H04N19/70 , H04N21/231 , H04N21/2335 , H04N21/234345 , H04N21/234363 , H04N21/234381 , H04N21/816
Abstract: Disclosed a method and a system for real-time rendering displaying virtual reality (VR) using head-up display devices. The method comprises: obtaining relevant parameters including a camera matrix, a projection matrix, a model matrix and a center position of lens distortion; creating a 3D model and obtaining an original coordinate data of the 3D model; obtaining first coordinate data in accordance with the relevant parameters and the original coordinate data of the 3D model; performing lens distortion on the first coordinate data based on the center position of lens distortion to obtain second coordinate data; rasterizing the second coordinate data to obtain pixel information; and drawing an image in accordance with a VR video data and the pixel information. According to the present disclosure, the lens distortion on the coordinate data is performed in the 3D model, so that video and immersive rendering can be realized in one processing, thereby improving rendering efficiency.
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9.发明申请
公开(公告)号：US20180191868A1
公开(公告)日：2018-07-05
申请号：US15860430
申请日：2018-01-02
Applicant: Black Sails Technology Inc.
Inventor： Zhuo Wang , Yongtao Tang , Ruoxi Zhao , Haoyan Zu , Chia-Chi Chang
CPC classification number: H04N13/398 , G06F3/011 , G06F3/012 , G06T3/40 , G06T9/001 , G06T15/04 , G06T15/205 , G06T2215/16 , H04L43/0888 , H04L65/601 , H04L67/38 , H04N5/76 , H04N9/8715 , H04N13/117 , H04N13/122 , H04N13/139 , H04N13/161 , H04N13/189 , H04N13/275 , H04N13/332 , H04N13/344 , H04N13/378 , H04N13/383 , H04N19/40 , H04N19/44 , H04N19/70 , H04N21/231 , H04N21/2335 , H04N21/234345 , H04N21/234363 , H04N21/234381 , H04N21/816
Abstract: A method for downloading a VR video is disclosed. The method comprises: receiving a play request for a first video; calculating an average download speed; selecting a plurality of first video segments from a plurality of video segments of the first video according to the average download speed, wherein the plurality of video segments of the first video correspond to different resolutions and bitrates; determining a download link according to the plurality of first video segments; and downloading the plurality of first video segments according to the download link. The video segments, which need to be downloaded, are determined according to the average download speed, so that the amount of downloaded data can be decreased and the video transmission can be optimized. The present disclosure also provides a system for downloading a VR video.
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公开(公告)号：US10015530B2
公开(公告)日：2018-07-03
申请号：US15269272
申请日：2016-09-19
Applicant: AT&T Intellectual Property I, L.P.
Inventor： Todd W. Jones , Shauna Adams , James Morgan , Thomas Paterson
IPC: H04N21/2343 , H04N21/234 , H04N19/136 , H04N19/12 , H04N19/40 , H04N21/2347 , H04N21/235 , H04N21/266 , H04N21/233 , H04N21/81 , H04N21/4402 , H04N21/439 , H04N19/179 , H04N19/70 , H04N17/02
CPC classification number: H04N21/23424 , H04N17/02 , H04N19/12 , H04N19/136 , H04N19/179 , H04N19/40 , H04N19/70 , H04N21/2335 , H04N21/23418 , H04N21/234309 , H04N21/234381 , H04N21/2347 , H04N21/2351 , H04N21/266 , H04N21/4398 , H04N21/440218 , H04N21/812
Abstract: A video processing method includes receiving a multimedia file including a first video file encrypted with a first compression algorithm and converting the first video file to a second video file, which is encrypted with a second compression algorithm. The method includes extracting, from the second file, video data indicative of at least one video characteristic of the second file and displaying the video data on a display screen or forwarding the video data to a content insertion server. The first video compression algorithm may be a MPEG-2 video compression algorithm and the second video compression algorithm may be an H.264 algorithm and/o an H.265 algorithm. The video data may include run time data indicative of a run time of the second video file, frame rate data indicative of a frame rate of the second video file, and pixel data indicative of a resolution of the second video file.
