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公开(公告)号：US20200351180A1
公开(公告)日：2020-11-05
申请号：US16962109
申请日：2019-01-16
发明人： Ola HÅLLMARKER , Kjell CHRISTENSON
IPC分类号： H04L12/26
摘要： There is provided a method for adaptive bitrate (ABR) adjustments in an IP network before making upshift of ABR level of media streams like video for live Over the Top (OTT) distribution. The invention is based on before upshifting of a current ABR level to a higher ABR level for one or more client devices, probing the network system with a higher bitrate of the data stream provided by e.g. replicating data in the data stream, and monitoring network conditions during probing. Based on the probing it is determined if the available resources in the network are sufficient to sustain an upshift of ABR-level for the client device.
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公开(公告)号：US20210392393A1
公开(公告)日：2021-12-16
申请号：US17295470
申请日：2019-11-26
发明人： Ted OLSSON
IPC分类号： H04N21/262 , H04N21/2187 , H04N21/81 , H04N21/254 , H04N21/2668 , H04N21/24 , H04N21/234
摘要： There is provided a method for handling client device advertisement playlists, ad pods, and insertion of ad pods in a live or linear media content stream in a media distribution system (100) for distributing media content from a streaming source (50), e.g. a broadcast location (TV network, local TV studio, cable system, etc.) via a primary network to a streaming server (101) to client devices, when providing dynamic server-side advertisement insertion at an ad insertion server (130) which may be integrated in a streaming edge server (101) or free-standing, during live streaming of media content to a plurality of clients (151-153). The method comprises sending ad requests to an ad server (110) and pre-generating ad pods for each client in a speculative manner before an upcoming ad break is initiated. The media distribution system may typically be of IP type for live distribution of media content streams, e.g. video and/or audio, in view of which aspects of the inventive concept will be described.
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公开(公告)号：US20210194635A1
公开(公告)日：2021-06-24
申请号：US16078365
申请日：2017-02-24
发明人： Anders CEDRONIUS , Hans INSULANDER , Christer BOHM , Per LINDGREN
摘要： A method in a packet-based network like the Internet is provided, which is directed towards packet loss recovery for transmission of a data stream, DS0 in a packet-based network. The method comprises transmitting data packets associated with the data stream, and upon receiving a retransmission request of missing data, retransmitting the missing data applying a selective retransmission of missing data, which may be based on a priority ranking of data types to be retransmitted, performing retransmission if it is determined that missing data will be received in time for display, or performing retransmission with a rate control.
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公开(公告)号：US11206198B2
公开(公告)日：2021-12-21
申请号：US16962109
申请日：2019-01-16
发明人： Ola Hållmarker , Kjell Christensson
IPC分类号： H04L12/26 , H04N21/24 , H04L12/811 , H04N21/2662 , H04L29/06
摘要： There is provided a method for adaptive bitrate (ABR) adjustments in an IP network before making upshift of ABR level of media streams like video for live Over the Top (OTT) distribution. The invention is based on before upshifting of a current ABR level to a higher ABR level for one or more client devices, probing the network system with a higher bitrate of the data stream provided by e.g. replicating data in the data stream, and monitoring network conditions during probing. Based on the probing it is determined if the available resources in the network are sufficient to sustain an upshift of ABR-level for the client device.
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公开(公告)号：US11095929B2
公开(公告)日：2021-08-17
申请号：US16797952
申请日：2020-02-21
发明人： Per Lindgren , Ted Olsson , Anders Cedronius , Hans Insulander , Christer Bohm , Magnus Danielson
IPC分类号： H04N21/242 , H04L29/06 , H04N21/236 , H04N21/43 , H04N21/8547 , H04N21/61
摘要： Systems and methods for video distribution synchronization are described herein. An example method to distribute a media stream over a distribution network to a number of devices may include determining, by one or more computer processors coupled to memory, a common master-client shared time reference Tref. Example methods may include determining a mean intermediate arrival time for first packets of a first type of the media stream, determining respective first playout times for the first packets based on the mean intermediate arrival time and the time reference Tref, associating the first packets with the respective first playout times, and distributing the media stream to the plurality of devices.
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公开(公告)号：US20220070072A1
公开(公告)日：2022-03-03
申请号：US17523800
申请日：2021-11-10
发明人： Ola HÅLLMARKER , Kjell Christensson
IPC分类号： H04L12/26 , H04N21/24 , H04L12/811 , H04N21/2662 , H04L29/06
摘要： There is provided a method for adaptive bitrate (ABR) adjustments in an IP network before making upshift of ABR level of media streams like video for live Over the Top (OTT) distribution. Example methods may include initiating, at a first time interval, probing of the IP network to determine if a first candidate bitrate is applicable, where the first candidate bitrate is greater than a preset bitrate of a client device data stream, determining that the candidate bitrate is applicable, increasing a transfer bitrate of the client device data stream, and initiating, at a second time interval, probing of the IP network to determine if a second candidate bitrate is applicable, where the second candidate bitrate is greater than the first candidate bitrate.
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公开(公告)号：US20200260132A1
公开(公告)日：2020-08-13
申请号：US16797952
申请日：2020-02-21
发明人： Per LINDGREN , Ted OLSSON , Anders CEDRONIUS , Hans INSULANDER , Christer BOHM , Magnus DANIELSON
IPC分类号： H04N21/242 , H04L29/06 , H04N21/43 , H04N21/8547 , H04N21/236
摘要： Systems and methods for video distribution synchronization are described herein. An example method to distribute a media stream over a distribution network to a number of devices may include determining, by one or more computer processors coupled to memory, a common master-client shared time reference Tref. Example methods may include determining a mean intermediate arrival time for first packets of a first type of the media stream, determining respective first playout times for the first packets based on the mean intermediate arrival time and the time reference Tref, associating the first packets with the respective first playout times, and distributing the media stream to the plurality of devices.
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