Koninklijke KPN (KKPNY) USPTO patents

A method is described for providing one or more tile streams to a client device for rendering a region-of-interest (ROI), wherein said ROI defines a region of a tile representation of a source video and wherein said method comprises: rendering a region-of-interest (ROI) video stream comprising a ROI of said source video; receiving ROI position information of at least one frame of said ROI video stream; and, receiving one or more tile streams that are requested the basis of said ROI position information and a spatial manifest file, said spatial manifest file defining one or more tile representations of said source video, a tile representation comprising one or more tile identifiers for identifying one or more tile streams and a tile position information defining the spatial position of said tile streams.

Methods and devices are provided for use in a streaming process (130) of a Virtual Reality [VR] video to a VR rendering device (120).

The invention relates to a network node (15) comprising at least one communication interface, at least one memory, and at least one processor.

Methods and systems are described for forming one or more tile streams comprising: providing media data of at least one composite video stream to the input of at least one encoder, the media data of said composite video stream representing video frames comprising an image region having one or more subregions, each of said one or more subregions comprising visual content of one of said one or more video streams; providing encoder information to said encoder for configuring said encoder to generate encoded media data representing tiled video frames, a tile in said tiled video frames matching at least one of said one or more subregions; encoding media data of said composite video stream, wherein media data associated with a subregion of a video frame are encoded into independently encoded media data that have no spatial decoding dependency on media data of other subregions in said video frame, said independently encoded media data forming a tile of a tiled video frame, preferably said tile being arranged in said image region on the basis of a tile grid; and, storing said encoded media data as one or more tile streams on a storage medium, preferably on a storage medium of one or more network nodes, a tile stream comprising media data of at least one tile and tile position information for signaling a decoder to decode the media data of said tile stream into tiled video frames comprising a tile at a position as indicated by the tile position information.

The invention relates a method and system for assessing coverage of a wireless access network within a desired area via cooperating wireless access networks and terminals capable of measurement and reporting across the different wireless access networks.

One aspect of the disclosure relates to a method in a user equipment for instructing establishment of a connection between a first local device and a second local device, the user equipment being connected to a public network, wherein an intermediary system is configured to connect to a first local network, to a second local network and to the public network.

Processor systems and computer-implemented methods are provided for rendering a multiuser virtual environment in which different panoramic images are provided as image-based backdrop for different viewing positions in the virtual environment.

A method is described of streaming HEVC-tiled video data to a client device comprising: providing said client device with a spatial manifest file comprising one or more spatial segments identifiers for locating one or more delivery nodes configured for delivering video data associated with a spatial segment identified by at least one of said one or more spatial segments identifiers, preferably (part of) one or more URLs, to said client device, a spatial segment being associated with HEVC-tiled video data comprising a subset of HEVC tiles of a HEVC-tiled (panorama) video stream; and, selecting a spatial segment identifier in said spatial manifest file for requesting a delivery node to deliver at least part of the video data of a spatial segment as a HEVC-tiled video stream to the client device.

A system is provided for enabling correlating timeline information between a first media stream and a second media stream which are both associated with a common play-out timeline.

A method of determining a group of user devices suitable for contributing user content to an interactive media broadcast may comprise: —transmitting a set of requirements to a first plurality of user devices (13), each user device having a set of capabilities, the set of requirements relating to using at least part of the user content in the interactive media broadcast, —transmitting an invitation to a second plurality of user devices (13), the invitation being configured to cause a user device to produce a conditional response if the set of capabilities of the user device matches the set of requirements, and —identifying a group of user devices from which a conditional response was received.

In a communication network with separate data planes including a control plane and a user plane, an application function is provided as a combination of an application function control plane (AF-CP) part operating in the network's control plane and an application function user plane (AF-UP) part operating in the network's user plane.

A system (1) is configured to associate each of multiple sets of cell groups to at least one of multiple successive time periods and for each successive time period, associate each of multiple mobile devices (11-15) to one cell group of the set associated with the time period.

A method is described of forming a bitstream by an encoder apparatus comprising: a processor of the encoder apparatus receiving a projected video frame including one or more pixel regions, the one or more pixel regions representing pixels of spherical video data projected onto one or more 2D projection surfaces of a projection model, the projection model being adapted to project spherical video data onto a rectangular 2D surface of a video frame; the processor generating a plurality of different candidate video frames on the basis of the received projected video frame, each candidate video frame being formed by applying at least one operation to one or more groups of pixels in one or more pixel regions of the projected video frame, wherein said at least operation includes a shift, mirror and/or rotation operation; and, wherein said operation is different for each of said plurality of different candidate video frames; the processor applying a rate distortion analysis to each of the candidate video frames to determine a rate distortion cost for each of the candidate video frames; and, the processor selecting a candidate video frame from said plurality of candidate video frames on the basis of the rate distortion cost; and, generating an output bitstream on the basis of the selected candidate video frame.

A method for enhancing a region of interest in video frames of a video stream is described.

A method of forming a video signal by a decoder device is described wherein the method comprises receiving a bit-stream and decoder information, the decoder information signaling the decoder device the presence of one or more resolution components in the bitstream for forming a video signal, a resolution component representing a spatially subsampled version, preferably a polyphase subsampled version, of a first video signal having a first resolution, the one or more resolution components being part of a resolution component group, the group comprising a plurality of resolution components on the basis of which the first video signal is reconstructable; and, the decoder device parsing the bitstream and decoding the one or more resolution components into video frames on the basis of the decoder information.

A method of scheduling transmissions to client devices comprises receiving feedback (f1a-f3d) about a plurality of candidate downlink frequency resources (91-94) from a plurality of client devices and/or measuring channel qualities of a plurality of candidate uplink frequency resources (95-98) from receptions of transmissions, e.g. of the feedback, by the plurality of client devices.

A method for an intermediary node to reduce a number of server-client sessions between a server (104) and a plurality of clients (102a, 102b, 102c) communicably connected to the server (104) over a network is disclosed.

A projection metadata system and method are provided for providing projection metadata to a rendering system for use in rendering a panoramic scene.