Patent application number | Description | Published |
20110096713 | Fast Channel Switching in TV Broadcast Systems - The invention relates to a technique for supporting a fast channel switching in broadcast systems or similar systems for the distribution of media data, for example mobile TV data, in a point-to-multipoint (‘PTM’) fashion. A method embodiment of the technique for supporting a fast channel switching in a system ( | 04-28-2011 |
20110170447 | Thinning of Packet-Switched Video Data - This invention relates to a method and to a system for thinning a stream of packet-switched video data in which a stream of packet-switched video data is detected and the size of the packets in the video stream is determined, wherein packets of the video stream data are dropped depending on the size of the packets. | 07-14-2011 |
20110191448 | Subdivision of Media Streams for Channel Switching - The invention provides the possibility of fast channel switching by subdividing N media streams, each media stream representing a channel, into a stream bundle containing for each channel a more important part of the media stream comprising the parts of the media stream considered more important in view of a quality of experience representing an expected quality perception of a user, and into N less important parts | 08-04-2011 |
20110194608 | Managing Predicted Motion Vector Candidates - There is provided a method of managing PMV candidates. The method comprises selecting a set of PMV candidates as a subset of the previously coded motion vectors. The method further comprises assigning a code value to each PMV candidate in the set of PMV candidates. The code values vary in length and are assigned to the PMV candidates in order of expected usage such that the PMV candidate having the highest expected usage has one of the shortest code values. | 08-11-2011 |
20110194609 | Selecting Predicted Motion Vector Candidates - There is provided a method of selecting PMV candidates, wherein each PMV candidate corresponds to a motion vector used for coding of a previous block, said previous block having a distance from a current block. The method comprises identifying allowed distance values of distances between the current block and the previous block. The method further comprises selecting a set of PMV candidates as a subset of the set of previously coded motion vectors that were used for previous blocks having an allowed distance from the current block. | 08-11-2011 |
20110231870 | Play-out Control for a Media Data Stream - A technique for controlling a play-out of a media data stream at a receiving device is provided. The media data stream comprises one or more programs, and each program comprises one or more program components. In a method implementation of the technique, a zone description is defined. The zone description is defined for a media zone for at least one program or at least one program component in the media stream and identifies the media zone for the at least one program or the at least one program component. In a next step, the zone description is associated to a program specific information data segment. The program specific information data segment is part of the media stream and comprises data specifying information at least regarding to the at least one program or at least one program component. The method also comprises transmitting the media data stream towards the receiving device. | 09-22-2011 |
20110261957 | Technique for Handling Media Content to be Accessible via Multiple Media Tracks - A technique for protecting media content that is to be accessible via multiple media tracks of a media file is provided. A method implementation of this technique comprises the step of providing a set of one or more first layer data items that are to be accessible via a first media track, with each first layer data item being decodable to be rendered as a portion of the media content. Moreover, a set of one or more second layer data items is provided that are to be accessible via at least one second media track, with each second layer data item being decodable to be rendered in combination with at least one decoded first layer data item as an enhanced portion of the media content. With each second layer data item a track reference index is associated that allows to identify the first media track via which the first layer data items are accessible. Then, in a next step, the second layer data items and the associated track reference indices (plus optionally the first layer data items) are encrypted for being transmitted to a content recipient. | 10-27-2011 |
20110314511 | Provision of Marked Data Content to User Devices of a Communications Network - The invention refers to a method to be used in a telecommunication network for providing individually marked digital signals (S | 12-22-2011 |
20120057635 | Technique for Bringing Encoded Data Items Into Conformity with a Scalable Coding Protocol - A technique for making media content in the form of encoded data items decodable by a decoder operating in accordance with a scalable coding protocol that defines two or more media layers is provided. A method implementation of this technique comprises the steps of generating one or more dummy data items that define a first media layer of the scalable coding protocol, and marking the encoded data items as belonging, to a second media layer of the scalable coding protocol. | 03-08-2012 |
20120093153 | Multicasting Technique for Scalably Encoded Media Layers - A technique for distributing in a multicasting network media content via two or more media layers is described. The media layers are hierarchically arranged in accordance with a scalable coding protocol such as the Scalable Video Coding (SVC) protocol. In a method implementation of this technique, in a first step a first number of media recipients for a first media layer that is transmitted via a first bearer of the multicasting network is determined. Then, a second bearer of the multicasting network for at least one second media layer is selected taking into account the first number and a hierarchical relationship between the first media layer and the second media layer. | 04-19-2012 |
20120121014 | Processing of Multimedia Data - The invention relates to techniques for processing media data at a receiver device in a packet-switched network. It is proposed to detect data packet losses in the media data, and to determine data frames, like P-frames or I-frames, within a group of successive frames, like the GOP structure, affected by a packet loss. The number of the affected data frames is compared with a threshold value and if said number is equal or higher then the threshold value, then it is proposed to drop the affected data frames and to provide for playing-out data frames in form of a slide show. | 05-17-2012 |
20120183065 | Scalable Video Coding Method, Encoder and Computer Program - A scalable video coding method for coding a video sequence ( | 07-19-2012 |
20120189116 | Technique for Determining Usage of Encrypted Media Content - A technique for determining usage of encrypted media content is described. A method implementation of this technique comprises the steps of obtaining a short-term key for decrypting the media content, obtaining a long-term key for decrypting the short-term key, decrypting the short-term key based on the long-term key, decrypting the media content based on the decrypted short-term key, and logging a parameter relating to the short-term key as a basis for determining media content usage. The short-term key may be a Traffic Encryption Key, TEK, and the long-term key may be a Service Encryption Key, SEK. | 07-26-2012 |
20120212579 | Method and Arrangement for Multi-View Video Compression - Methods and arrangements for compression and de-compression of N-stream multi-view 3D video in data handling entities, e.g. a data providing node and a data presenting node. The methods and arrangements involve multiplexing ( | 08-23-2012 |
20120246690 | Apparatus and Method for Tuning to a Channel of a Moving Pictures Expert Group Transport Stream (MPEG-TS) - A method and apparatus for tuning to a channel of a Moving Pictures Expert Group transport stream (MPEG-TS), for example used in an Internet Protocol Television (IPTV) network, are provided for optimising a channel change procedure. The method comprises the steps of receiving a MPEG transport stream at a first bit rate, the MPEG transport stream comprising a plurality of television channels. Program clock reference (PCR) values are identified in the received MPEG transport stream, and one or more of the program clock reference (PCR) values are adjusted. The MPEG transport stream, including the adjusted program clock reference values, are transmitted at a second bit rate, for example to a receiver device such as a set top box, thereby enabling the set top box to perform a channel change procedure more quickly. | 09-27-2012 |
20120250765 | Method and Arrangement for Video Coding - Methods and arrangements in video encoding and decoding entities. The methods and arrangements relate to the joint encoding of reference information associated with encoded video. The method and arrangement in a decoding entity relate to obtaining ( | 10-04-2012 |
20120250766 | Method and Arrangement for Video Coding - Methods and arrangements in video encoding and decoding entities. The methods and arrangements involve determining ( | 10-04-2012 |
20120263063 | Client Entity, Network Entity and Data Replacement Entity - The present invention relates to a client entity being capable of communicating over a communication network. The client entity comprises a receiver ( | 10-18-2012 |
20130027523 | METHODS AND ARRANGEMENTS FOR 3D SCENE REPRESENTATION - The embodiments of the present invention relates to a method and a processor for representing a 3D scene. In the method, one 3D component of the 3D scene to be represented, captured at least three different views (v | 01-31-2013 |
20130128052 | Synchronization of Cameras for Multi-View Session Capturing - The invention provides a solution for synchronizing cameras connected via a telecommunication network for capturing a multi-view session controlled by a synchronization module. The synchronization module provides a multi-view capturing parameter determined from capturing parameter received from the at least one camera. Said multi-view capturing parameter is provided to the cameras participating in the session capturing in order to synchronize the capturing of the multi-view session. Further a camera device is proposed which inform the synchronization module about its disposability and about the capturing parameter of the camera. Said camera receives a multi-view capturing parameter which is used for capturing the session. | 05-23-2013 |
20130188708 | Multi-View Encoding and Decoding Technique Based on Single-View Video Codecs - A technique for encoding and decoding data pertaining to multiple video views is presented. A method embodiment of the encoding technique comprises the steps of providing first picture stream belonging to a first view and performing a first encoding operation to encode a picture of the first picture stream. The first encoding operation is based on a single-view video codec and provides encoder state information relevant for the encoding of another picture of the first picture stream. Also provided is a second picture stream belonging to a second video view. A second encoding operation is performed to encode a picture of the second picture stream based on the single-view video codec, wherein the second encoding operation is based on the encoder state information provided by the first encoding operation. On the basis of the encoded picture of the first picture stream and encoded picture of the second picture stream, dedicated video streams are generated. | 07-25-2013 |
20130271571 | Method and Arrangement for Processing of Encoded Video - Methods and arrangements in video handling entities for transforming an MVC bit stream to an AVC bit stream and vice versa. The methods and arrangements involve modification of reference data in an obtained bit stream and thus transforming the bit stream into another format. The suggested solution is a low complexity procedure, and thus much faster than e.g. transcoding of a bit stream into another format. | 10-17-2013 |
20130278719 | View Synthesis - Control of view synthesis of a 3D scene is described. A method comprises detecting discontinuities in a depth map that comprises depth values corresponding to a view point of a reference camera (C | 10-24-2013 |
20130287123 | Indicating Bit Stream Subsets - A method of indicating bit stream subsets in a video bit stream ( | 10-31-2013 |
20140126652 | Indicating Bit Stream Subsets - A method of indicating bit stream subsets in a compressed video bit stream is provided. The method comprises receiving the bit stream, dividing the bit stream into packets, wherein each packet comprises either one of video data or supplemental information, marking each packet ( | 05-08-2014 |
20140176553 | Method and Apparatus for Creating a Disocclusion Map used for Coding a Three-Dimensional Video - It is presented a method for creating a disocclusion map used for coding a three-dimensional, 3D, video, the method comprises receiving ( | 06-26-2014 |
20140177718 | Multi-Layer Video Stream Encoding and Decoding - Multi-layer dependencies are signaled in an efficient way for a multi-view video stream (1). Coding or decoding relationship information defining coding or decoding dependencies is represented in bit-efficient syntax code, preferably through usage of hierarchical layer dependencies using layer indices for representing layer dependencies. | 06-26-2014 |
20140181885 | MULTI-LAYER VIDEO STREAM DECODING - Multi-layer dependencies are signaled in an efficient way for a multi-view video stream. Coding or decoding relationship information defining coding or decoding dependencies is represented in bit-efficient syntax code, preferably through usage of hierarchical layer dependencies using layer indices for representing layer dependencies. | 06-26-2014 |
20140185686 | Motion Vector Processing - The embodiments relates to motion vector prediction and decoding for multi-view video content from multiple camera views ( | 07-03-2014 |
20140192048 | Device, Method and Computer Program for Generating a Synthesized Image - The invention relates to a method of generating a synthesized image representing a view of a scene from a first input image representing the view and a second input image representing the view, the synthesized image comprising synthesized image positions, by assigning a synthesized image data value to a synthesized image position. The method comprises determining whether input images have at the synthesised image position data values associated with them. If either one has a data value associated, that data value is assigned to the synthesized image position. If both, an average of both values is assigned. The average is a weighed average, with weighing factors being a function of a distance or distances to a closest image position with no image data value or valid image data value assigned. | 07-10-2014 |
20140192148 | Encoder, Method in an Encoder, Decoder and Method in a Decoder for Providing Information Concerning a Spatial Validity Range | 07-10-2014 |
20140192165 | SIGNALING OF CAMERA AND/OR DEPTH PARAMETERS - An encoder and a method therein for providing an update message relating to at least one of camera parameters and depth parameters “the parameters”, a decoder and a method therein for decoding the update message, a first device comprising the encoder and a second device comprising the decoder are provided. The parameters enable the decoder to synthesize a first view for a first camera position based on a second view for a second camera position and the parameters of the second view. The encoder detects which of the parameters are changing over time. Next, the encoder modularizes the parameters into a respective module. Furthermore, the encoder encodes each respective module into the update message and sends the update message to the decoder. Next, the decoder decodes each respective module of the update message to obtain the parameters which are to be updated. | 07-10-2014 |
20140198856 | Motion Vector Processing - The embodiments relates to motion vector prediction and decoding for multi-view video content from multiple camera views ( | 07-17-2014 |
20140205015 | Depth Map Encoding and Decoding - The embodiments use prediction weights in connection with predictive encoding and decoding of a depth map in the form of a frame ( | 07-24-2014 |
20140205023 | Auxiliary Information Map Upsampling - An auxiliary information map ( | 07-24-2014 |
20150078455 | IDENTIFYING A PARAMETER SET FOR DECODING A MULTI-LAYER VIDEO REPRESENTATION - A method of identifying a parameter set for decoding a multi-layer video representation. The method includes identifying the parameter set based on a parameter set identifier and one or more layer identifiers indicating a layer of the video representation. Optionally, the method may further include returning the identified parameter set from a parameter set database, and activating the parameter set. Identifying parameter sets using both a parameter set identifier and one or more layer identifiers is advantageous in that the length of the parameter set identifier codeword may be shorter. This results in bitrate savings, since the number of bits which need to be transmitted is reduced. Corresponding computer program products and video decoders for decoding a multi-layer video representation are disclosed. | 03-19-2015 |