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1. 发明申请

US20220303536A1 METHOD OF SIGNALLING IN A VIDEO CODEC 有权
公开(公告)号：US20220303536A1
公开(公告)日：2022-09-22
申请号：US17619946
申请日：2020-04-21
申请人： British Broadcasting Corporation
发明人： SAVERIO BLASI , ANDRE SEIXAS DIAS , GOSALA KULUPANA
IPC分类号： H04N19/12 , H04N19/625 , H04N19/159 , H04N19/176
摘要： Encoding of video data in a video codec involves a transform of residuals. This can be composed of a primary transform and a secondary transform. The selection of the secondary transform is effected by considering the characteristics of a block to be encoded. The selection of secondary transform can be signaled to the decoder, or inferred therein.

2. 发明申请

US20220103833A1 VIDEO ENCODING AND VIDEO DECODING 有权
公开(公告)号：US20220103833A1
公开(公告)日：2022-03-31
申请号：US17418101
申请日：2019-11-05
申请人： British Broadcasting Corporation
发明人： SAVERIO BLASI , ANDRE SEIXAS DIAS , GOSALA KULUPANA
IPC分类号： H04N19/159 , H04N19/105 , H04N19/17
摘要： Decoding of a merge-predicted block is carried out, for triangular partitions of the block, using a combination of inter-prediction and intra-prediction. The combination of inter-prediction and intra-prediction to be used is signalled on a received bitstream. Combination may be algorithmic, for example arithmetic.

3. 发明申请

US20220060686A1 VIDEO ENCODING AND VIDEO DECODING 有权
公开(公告)号：US20220060686A1
公开(公告)日：2022-02-24
申请号：US17413370
申请日：2019-12-10
申请人： British Broadcasting Corporation
发明人： SAVERIO BLASI , ANDRE SEIXAS DIAS , GOSALA KULUPANA
IPC分类号： H04N19/105 , H04N19/176 , H04N19/51 , H04N19/593
摘要： Efficient prediction of samples within a block in a video encoder and decoder by means of computing both an inter-predicted prediction hypothesis as well as an intra-predicted prediction-hypothesis. The two prediction hypotheses are then combined together by means of parametric transformation to form a new prediction hypothesis which may be more accurate in predicting the content of the original block.

4. 发明授权

US10305614B2 Broadcast network 有权
公开(公告)号：US10305614B2
公开(公告)日：2019-05-28
申请号：US15574932
申请日：2016-05-18
申请人： British Broadcasting Corporation
发明人： Peter Moss
IPC分类号： H04H20/67 , H04H20/42 , H04L5/22 , H04B7/0413 , H04L27/34
摘要： A method of operating a wireless network operating on a single frequency across a geographical area involves dividing the network into regions and arranging that the transmission of signals in subsets of adjacent regions on the same frequency is such that a receiver does not receive signals from more regions than can be separated using demapping techniques. The transmission method evolves a pattern of time slots such that the number of adjacent regions of a subset of regions transmitting simultaneously on a single frequency is less than the number of signals that each receiver is capable of demapping. The demapping arrangements may include MIMO techniques, constellation schemes, QAM.

5. 发明授权

US10153561B2 Antenna arrangement 有权
公开(公告)号：US10153561B2
公开(公告)日：2018-12-11
申请号：US14777829
申请日：2014-03-20
申请人： British Broadcasting Corporation
发明人： John Boyer
IPC分类号： H01Q21/26 , H01Q1/48 , H01Q21/29 , H01Q9/16 , H01Q9/30 , H01Q21/20 , H01Q21/24
摘要： An antenna arrangement can produce omni-directional polarisations of two or more types and comprises a compact arrangement of a dipole with array comprising first and second conductors in parallel planes separated by a printed circuit board and laid on the printed circuit board for generating horizontally polarised signals. A monopole arrangement comprises a third conductor substantially orthogonal to the planes of the first and second conductors and arranged so that one of the first and second conductors acts as a ground plane for the third conductor.

6. 发明授权

US09877025B2 Video encoding and decoding with prediction at higher precision 有权
公开(公告)号：US09877025B2
公开(公告)日：2018-01-23
申请号：US13940581
申请日：2013-07-12
申请人： BRITISH BROADCASTING CORPORATION
发明人： Matteo Naccari , Marta Mrak
IPC分类号： H04N19/124 , H04N19/12 , H04N19/176 , H04N19/61
CPC分类号： H04N19/124 , H04N19/12 , H04N19/176 , H04N19/61
摘要： A video decoder has a transform mode and a transform skip mode and in the transform skip mode a residual prediction mode is selected. A compressed bit-stream is entropy-decoded to obtain a block of quantised values. An inverse quantiser operates in the transform mode to form transform coefficients and in the transform skip mode to form differential residual values. In the transform mode an inverse transform is performed to form residual values. In the transform skip mode residual prediction is used perform residual prediction using high accuracy locally decoded residual value. The residual value is then down-scaled to obtain the reconstructed residual. A block predictor is formed from decoded image values at the same precision at which video samples are stored in the frame memory.

7. 发明申请

US20170006273A1 Method And Apparatus For Conversion Of HDR Signals 审中-公开
标题翻译： HDR信号转换的方法和装置
公开(公告)号：US20170006273A1
公开(公告)日：2017-01-05
申请号：US15196276
申请日：2016-06-29
申请人： British Broadcasting Corporation
发明人： Timothy John Borer , Andrew David Raine Cotton
IPC分类号： H04N9/77
CPC分类号： H04N9/77 , G06T5/009 , G06T2207/20208 , G09G5/02 , G09G5/10 , G09G2320/0276 , G09G2340/06 , G09G2360/16 , G09G2370/04 , H04N5/202 , H04N9/68
摘要： Described are concepts, systems and techniques related to processing an input video signal intended for a first display to produce an output signal appropriate for a second display. The concepts, systems and techniques include converting using one or more transfer functions arranged to provide relative scene light values and remove or apply rendering intent of the input or output video signal, wherein the removing or applying rendering intent alters luminance.
摘要翻译：描述了与处理用于第一显示器的输入视频信号相关以产生适合于第二显示器的输出信号的概念，系统和技术。概念，系统和技术包括使用布置成提供相对场景光值的一个或多个传递函数进行转换，并且去除或应用输入或输出视频信号的渲染意图，其中删除或应用渲染意图改变亮度。

8. 发明申请

US20160323348A1 Content Delivery 审中-公开
标题翻译：内容交付
公开(公告)号：US20160323348A1
公开(公告)日：2016-11-03
申请号：US15109283
申请日：2014-12-23
申请人： BRITISH BROADCASTING CORPORATION
发明人： Richard BRADBURY , Andrew LIPSCOMBE
IPC分类号： H04L29/06 , H04L29/08
CPC分类号： H04L65/605 , H04L65/4076 , H04L65/4084 , H04L67/02
摘要： A system for delivering content at varying qualities from a server to multiple client across a network has a server side converter and a client side converter. The server side converter makes unicast requests to a server for representations of content and converts these to multiple representations to be delivered as multicast streams. The client side converter receives a request for content from clients, determines a representation of content to obtain and subscribes to an appropriate multicast stream. The client side then converts the multicast stream back into segments available to a client by unicast request. In this way, data is delivered efficiently across a network from a server side to a client side whilst maintaining compatibility that client devices can issue traditional unicast requests.
摘要翻译：通过网络从服务器向多个客户端递送不同质量的内容的系统具有服务器侧转换器和客户端侧转换器。服务器端转换器向服务器发出单播请求以表示内容，并将其转换为多个表示，以作为多播流来传送。客户端转换器从客户端接收对内容的请求，确定内容的表示以获得并订阅适当的多播流。客户端然后通过单播请求将组播流转换回客户端可用的段。以这种方式，数据从服务器端到客户端通过网络有效传送，同时保持客户端设备可以发布传统单播请求的兼容性。

9. 发明申请

US20160269725A1 Adaptive Prediction Of Coefficients Of A Video Block 审中-公开
标题翻译：视频块系数的自适应预测
公开(公告)号：US20160269725A1
公开(公告)日：2016-09-15
申请号：US15034057
申请日：2014-11-04
申请人： BRITISH BROADCASTING CORPORATION
发明人： Marta MRAK , Ebroul IZQUIERDO , Saverio Giovanni BLASI
IPC分类号： H04N19/103 , H04N19/50 , H04N19/18 , H04N19/124 , H04N19/176
CPC分类号： H04N19/103 , H04N19/124 , H04N19/132 , H04N19/157 , H04N19/176 , H04N19/18 , H04N19/182 , H04N19/50
摘要： An efficient high quality video coding and decoding technique is described. A prediction block is generated that contains modified coefficients. The modified coefficients improve the efficiency of the compression process once the prediction block is subtracted from the original block to generate a residual signal for quantisation and encoding. A similar process operates at the decoder side. The processes may operate in both the frequency and the spatial domain.
摘要翻译：描述了一种高效的高质量视频编码和解码技术。生成包含修正系数的预测块。一旦从原始块中减去预测块以产生用于量化和编码的残余信号，修改的系数提高了压缩处理的效率。类似的过程在解码器侧进行操作。这些过程可以在频域和空间域中操作。

10. 发明申请

US20160165307A1 ACCESSING BROADCAST MEDIA 审中-公开
标题翻译：访问广播媒体
公开(公告)号：US20160165307A1
公开(公告)日：2016-06-09
申请号：US14790771
申请日：2015-07-02
申请人： British Broadcasting Corporation
发明人： Ben Lavender , Priya Prakash , Jae K. Lee , Anthony Ageh
IPC分类号： H04N21/4627 , H04N21/262 , H04N21/442 , H04N21/482 , H04N21/431 , H04N21/61 , H04N21/472
CPC分类号： H04N21/4627 , H04N21/26241 , H04N21/4318 , H04N21/44204 , H04N21/47208 , H04N21/4821
摘要： This invention relates to a system (2000) for providing individual users access to audio/visual content which has been broadcast to a plurality of users on a scheduled basis. The system comprises means for storing the content, means for enabling a user to download the content in the form of a downloadable file, and means for enabling a user to view the content by opening and playing the downloaded file. The means for opening and playing the downloaded file preferably being adapted to open and/or play the downloaded file only within a fixed time period after the scheduled broadcast time of the content.
摘要翻译：本发明涉及一种系统（2000），用于提供单个用户对已经按照预定的方式向多个用户广播的音频/视频内容的访问。该系统包括用于存储内容的装置，用于使用户能够以可下载文件的形式下载内容的装置，以及用于使用户能够通过打开和播放所下载的文件来查看内容的装置。用于打开和播放下载文件的装置优选地仅适于在内容的预定广播时间之后的固定时间段内打开和/或播放下载的文件。

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