Patents Assigned to British Broadcasting Corporation
  • Patent number: 10848729
    Abstract: 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.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: November 24, 2020
    Assignee: British Broadcasting Corporation
    Inventors: Timothy John Borer, Andrew David Raine Cotton
  • Patent number: 10701459
    Abstract: A controller for controlling the output of an audio-video feed has an input for receiving audio-video content and a vector engine arranged to produce a continuous metadata value of M dimensions at intervals from the audio-video content. The metadata value may indicate aspect of the video content such as rate, pace, tone or other such information. A low pass filter and hysteresis filter are then provided to filter the continuous metadata value to produce a binary output. The binary output is provided to a retrieval module arranged to control the audio-video content in dependence upon the binary output. In this way, automated segmentation of audio-video content may be reliably achieved.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: June 30, 2020
    Assignee: British Broadcasting Corporation
    Inventor: Simon Rankine
  • Publication number: 20200153676
    Abstract: Various embodiments include a system for providing users access to audio/visual content, the system comprising means for storing content, means for broadcasting content on a scheduled basis, means for downloading the stored content from the storage means, means for enabling a user to access the downloaded content only within a specified time period, means for streaming content off the storage means, and means for receiving the content broadcast on a scheduled basis.
    Type: Application
    Filed: November 11, 2019
    Publication date: May 14, 2020
    Applicant: British Broadcasting Corporation
    Inventors: Richard Bradbury, Tony Ageh, Gemma Garmeson, Fraser Pearce, Matthew Browning, Ben Gammon, Julia Whitney, Julie Dodd, Juergen Hoehn
  • Patent number: 10594997
    Abstract: A method and device for converting a video signal from a lower dynamic range source to produce a signal usable by target devices of a higher dynamic range comprises converting with a convertor that implements a process in which a received signal is received as a luminance component and separate colour components, A modified luminance component is then produced by applying an expansion function to the luminance component for luminance values above a threshold, applying a gamma function and then applying a scaling function. The modified luminance and separate colour components are then provided as an output signal for display on a target device of a higher dynamic range. The expansion of luminance ensures that the luminance range appropriately matches the range for a target display. By applying the expansion luminance values above a threshold, values below a threshold can be maintained with appropriate values for display.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: March 17, 2020
    Assignee: British Broadcasting Corporation
    Inventor: Simon Thompson
  • Patent number: 10491448
    Abstract: Various embodiments include a system for providing users access to audio/visual content, the system comprising means for storing content, means for broadcasting content on a scheduled basis, means for downloading the stored content from the storage means, means for enabling a user to access the downloaded content only within a specified time period, means for streaming content off the storage means, and means for receiving the content broadcast on a scheduled basis.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: November 26, 2019
    Assignee: British Broadcasting Corporation
    Inventors: Richard Bradbury, Tony Ageh, Gemma Garmeson, Fraser Pearce, Matthew Browning, Ben Gammon, Julia Whitney, Julie Dodd, Jurgen Hoehn
  • Patent number: 10455209
    Abstract: 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.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: October 22, 2019
    Assignee: British Broadcasting Corporation
    Inventors: Timothy John Borer, Andrew David Raine Cotton
  • Patent number: 10394888
    Abstract: Methods and apparatus for identifying one or more locations of a video clip within video content. In embodiments, a method comprises producing segments of the video clip, comparing the segments of the video clip to segments of the video content, and producing a first measure of similarity of the video clip to the video content at relatively displaced temporal positions. A method can further include filtering and comparing to identify, from a second measure of similarity, the one or more locations of the video clip within the video content.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: August 27, 2019
    Assignee: British Broadcasting Corporation
    Inventors: Benjamin Richard Clark, Jana Eggink
  • Patent number: 10396869
    Abstract: Methods and apparatus for processing an OFDM MIMO signal in a system having at least two transmitters arranged to transmit an output signal pair that includes operating a series of transformations on a pair of input signals so that each stream of the output signal pair contains decodable information from both streams of the input signal pair.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: August 27, 2019
    Assignee: British Broadcasting Corporation
    Inventors: Peter Neil Moss, Adam Wiewiorka
  • Patent number: 10320875
    Abstract: 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 while maintaining compatibility that client devices can issue traditional unicast requests.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: June 11, 2019
    Assignee: British Broadcasting Corporation
    Inventors: Richard Bradbury, Andrew Lipscombe
  • Patent number: 10305614
    Abstract: 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.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: May 28, 2019
    Assignee: British Broadcasting Corporation
    Inventor: Peter Moss
  • Patent number: 10298943
    Abstract: In video coding, where differences between input picture values and picture prediction values are transformed in a block based transform, the differences are formed in a series of parallel steps. A first step conducted in parallel upon a first subset of pixels uses prediction values based wholly on previously processed blocks. This first subset can include anchor pixels which are not contiguous with any previously processed block. A second step conducted in parallel upon a second subset includes pixels which are predicted from pixels of the first subset.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: May 21, 2019
    Assignee: BRITISH BROADCASTING CORPORATION
    Inventors: Marta Mrak, Thomas Davies, David John Flynn, Andrea Gabriellini
  • Patent number: 10153561
    Abstract: 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.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: December 11, 2018
    Assignee: British Broadcasting Corporation
    Inventor: John Boyer
  • Patent number: 9877025
    Abstract: 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.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: January 23, 2018
    Assignee: British Broadcasting Corporation
    Inventors: Matteo Naccari, Marta Mrak
  • Patent number: 9720560
    Abstract: A graphical user interface for a computer program, the interface comprising an array of main panes each providing access to a particular aspect of the program, the panes being in register with one another at a vertex corresponding to the area in which all the panes meet, each of the panes being adapted to expand as a pointing device highlights a pane, the expansion of said pane relative to the other panes wherein the panes remain in register with one another at the vertex as a pane expands.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: August 1, 2017
    Assignee: British Broadcasting Corporation
    Inventor: Priya Prakash
  • Patent number: 9451272
    Abstract: In a method of video coding, in which a difference is formed between input picture values and picture prediction values and that difference is transforming with a DCT, the picture prediction is formed as: P=(1?c)Pc+CPo where Pc is a closed loop predictor which is restricted to prediction values capable of exact reconstruction in a downstream decoder and Po is a spatial predictor which is not restricted to prediction values capable of exact reconstruction. The factor can vary from zero to unity depending on a variety of parameters.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: September 20, 2016
    Assignee: British Broadcasting Corporation
    Inventors: Thomas Davies, James Barrett
  • Publication number: 20160165307
    Abstract: 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.
    Type: Application
    Filed: July 2, 2015
    Publication date: June 9, 2016
    Applicant: BRITISH BROADCASTING CORPORATION
    Inventors: Ben Lavender, Priya Prakash, Jae K. Lee, Anthony Ageh
  • Patent number: 9183908
    Abstract: An interleaver or deinterleaver comprises a memory having M logical memory units arranged in groups of N memory units such that accesses to memory units within a group are faster after a first access to a memory in that group using first access. An address generator is arranged to write consecutive data items a number of memory units apart that is less than the size of groups N of memory units so that two or more data items are written within groups. The arrangement provides fast interleaving without increasing memory size.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: November 10, 2015
    Assignee: British Broadcasting Corporation
    Inventors: Andrew Murphy, Oliver Paul Haffenden
  • Patent number: 9143794
    Abstract: Video is encoded by applying a vertically and horizontally separable transform to provide a block of transform coefficients; and quantizing the transform coefficients. Prior to quantization, a filtering operation is performed on the block of transform coefficients, the filtering operation applying a rotation to pairs of coefficients in the block. Each pair of coefficients may be symmetrically positioned with respect to the leading diagonal of the block.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: September 22, 2015
    Assignee: British Broadcasting Corporation
    Inventor: Thomas James Davies
  • Patent number: 9100547
    Abstract: 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.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: August 4, 2015
    Assignee: BRITISH BROADCASTING CORPORATION
    Inventors: Ben Lavender, Priya Prakash, Jae K Lee, Anthony Ageh
  • Patent number: 9094688
    Abstract: In the encoding of video data, a list of references pictures is constructed to be used in decoding. Prediction (direction) modes are defined by n-tuples (x0, x1, . . . , xM-1), where xm specifies prediction option of the m-th component of the motion vector field, m=0, . . . , M-1, where M components to the motion fields exist; where a coding option xm is an element from a set composed of all defined combinations of motion prediction modes and reference picture indices, with the addition of an option “/”, xm?{“/”, 0, 1, . . . , rm?1}; where option “/” specifies that the component is not used, and other options 0, 1, . . . , rm?1 specify one of rm combinations. A subset of all possible n-tuples is provided and a prediction mode used for predicting an inter-coded block is defined by reference to that subset.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: July 28, 2015
    Assignee: British Broadcasting Corporation
    Inventors: Nikola Sprljan, Marta Mrak