Patent application number | Description | Published |
20080205511 | BACKWARD-COMPATIBLE CHARACTERIZATION OF AGGREGATED MEDIA DATA UNITS - A system and method for conveying information that is helpful for a network middlebox or a media player to decided which coded data units to forward or process within an RTP payload or a file format data unit in an easy-to-access manner. This mechanism can be used to provide indications of items such as redundant coded pictures, temporal level switching points, gradual decoding refresh access points, view identifiers, and view random access points. A middlebox and/or receiver can then use this information to determine whether certain coded data units need to be processed and/or transmitted. | 08-28-2008 |
20080253467 | SYSTEM AND METHOD FOR USING REDUNDANT PICTURES FOR INTER-LAYER PREDICTION IN SCALABLE VIDEO CODING - A system and method for indicating whether a redundant picture can be used to replace a corresponding primary picture for inter-layer prediction. Various embodiments involve the use of a property of a redundant picture in relation to the corresponding primary picture. Based on such a property, a decoder can derive whether the redundant picture or a portion thereof can be utilized for inter-layer prediction of intra texture, macroblock coding mode, motion, and/or residual properties. | 10-16-2008 |
20080260034 | VIRTUAL DECODED REFERENCE PICTURE MARKING AND REFERENCE PICTURE LIST - An improved system and method for implementing efficient decoding of scalable video bitstreams is provided. A virtual decoded picture buffer is provided for each lower layer of the scalable video bitstream. The virtual decoded picture buffer stores decoded lower layer pictures for reference. The decoded lower layer pictures used for reference are compiled to create a reference picture list for each layer. The reference picture list generated by the virtual decoded picture buffer is used during a direct prediction process instead of a target reference list to correctly decode a current macroblock. | 10-23-2008 |
20080260047 | FEEDBACK BASED SCALABLE VIDEO CODING - A system and method provides a first integrity check code that can be calculated at an encoder and then sent to a decoder as a supplemental enhancement information message. The decoder can then calculate a second integrity check code over the actual received network abstraction layer units. This second integrity check code can be compared with the encoder-generated first integrity check code sent via the supplemental enhancement information message to indicate if in fact all of the transmitted NAL units from which the integrity check code was generated have been received without changes in their content. In addition, an error tracking algorithm is provided that can be run at either the encoder or the decoder in order to determine if the network abstraction layer units are correct in content at the decoder level. Therefore, pictures that are sent as just intra coded frames and pictures that are sent as just inter coded frames can both be checked for errors. Hence, error checking can be provided in those situations where the decoder fails to provide adequate information to the encoder as to what has actually been decoded. | 10-23-2008 |
20080292003 | Signaling of multiple decoding times in media files - The exemplary embodiments of this invention provide in one aspect thereof an ability to signal multiple decoding times for each sample in a file format level in order to allow, for example, different decoding times for each sample (or sample subset) between decoding an entire stream and decoding a subset of the stream. An alternate decoding time box is specified to allow for the signaling of multiple decoding times for each sample. Such a box can contain a compact version of a table that allows indexing from an alternate decoding time to a sample number, where an alternate decoding time is a decoding time to be used with a sample when only a subset of an elementary stream stored in a track is to be decoded. Furthermore, each entry in the table provides the number of consecutive samples with the same time delta, and the delta between those consecutive samples. By adding the deltas a complete time-to-sample map can be constructed. | 11-27-2008 |
20090003439 | System and method for indicating temporal layer switching points - Disclosed are a system, apparatus, computer programs and methods for indicating proper temporal layer switching points for temporal scalable coding. Various embodiments provide an apparatus and method for properly indicating temporal layer switching points in a scalable video bit stream or in a scalable video file container. Using these indications, a decoder can determine where to perform temporal layer switching, after which all of the pictures at and below the desired temporal layer can be correctly decoded. | 01-01-2009 |
20090003443 | PRIORITY-BASED TEMPLATE MATCHING INTRA PREDICTION VIDEO AND IMAGE CODING - Template matching intra prediction based on a given priority is provided. Priority values of all, or a subset of the pixels on a border between a current block and a reconstructed area are calculated. A border pixel with the highest priority is used as the center of a template block. A search for the best matched candidate template is performed in the reconstructed area. Distortion metrics between known pixels in the to-match template and corresponding pixels in candidate templates are calculated and compared. The candidate template with the smallest distortion metric value is chosen as the best match. Corresponding pixels of the best-matched candidate template in the searching area are used as predictors of the unknown pixels in the template centered at the pixel with the highest priority, and the predicted pixels are marked as known. The process is repeated until all pixels in the current block are marked as known. | 01-01-2009 |
20090083434 | CODED APPLICATION DATA UNIT ORDER RECOVERY IN LAYERED MULTICAST - Systems and methods are provided which allow receivers to recover the decoding order of network abstraction layer (NAL) units conveyed in different Real Time Protocol (RTP) sessions. An indication of decoding order for application data units (ADUs) in each packet is included in the packet structure of a PACSI NAL unit, when the PACSI NAL unit is a single-time aggregation packet type A (STAP-A) packet and the PACSI NAL unit is the first NAL unit in an aggregation packet (e.g., when a receiver is subscribed to different RTP session that convey NAL units). If the receiver is subscribed to only a base layer RTP session, the CL-DON indication can be ignored. | 03-26-2009 |
20090116558 | Motion skip and single-loop encoding for multi-view video content - A system, method and computer program tangibly embodied in a memory medium for implementing motion skip and single-loop decoding for multi-view video coding. In various embodiments, a more efficient motion skip is used for the current JMVM arrangement by 8×8 or 4×4 pel disparity motion vector accuracy, while maintaining the motion compensation process that is compliant with the H.264/AVC design regarding hierarchical macroblock partitioning. Adaptive referencing merging may be used in order achieve a more accurate motion skip from one inter-view reference picture. In order to indicate whether a picture is to be used for motion skip, a new syntax element or syntax modification in the NAL unit header may be used. | 05-07-2009 |
20090279602 | Method, Device and System for Effective Fine Granularity Scalability (FGS) Coding and Decoding of Video Data - Methods, devices and systems for effective and improved video data scalable coding and/or decoding based on Fine Grain Scalability (FGS) information are disclosed. A method for encoding video data is shown, comprising obtaining video data; generating a base layer picture based on the obtained video data, the base layer picture comprising at least one slice, the slice corresponding to a region within the base layer picture; and generating at least one enhancement layer picture corresponding to the base layer picture, wherein the at least one enhancement layer picture comprises at least one FGS slice corresponding to a region within the enhancement layer picture, wherein the region to which the at least one of said FGS-slices corresponds is different from the region to which the slice in the base layer picture corresponds, encoding the base layer picture and the at least one enhancement layer picture resulting in encoded video data. | 11-12-2009 |
20090327346 | SPECIFYING MEDIA CONTENT PLACEMENT CRITERIA - To control advertisement or other media content placement in content, content owners or other interested parties may include ad or media content placement metadata in the content item. Media content placement metadata may provide specifications such as a maximum media content (e.g., ad) duration, media content rating, media content size, payment information, placement location on a screen (i.e., for videos or images) and the like. The media content metadata may be extracted and used to retrieve matching media content such as advertisements for inclusion during play of a corresponding content item. | 12-31-2009 |
20100144283 | Method and System for Creation and Control of Virtual Rendering Devices - Methods and systems for coordinating user terminals are disclosed. A user terminal may receive a user terminal identifier and a sensor identifier from a user terminal, determine a group topology based on the user terminal identifier and the sensor identifier to identify a spatial relationship relative to the user terminal, receive a media signal, and identify a subsection of the media signal. The user terminal also may generate subsection information to assign a subsection of the media signal to the user terminal corresponding to the spatial relationship, and may communicate the subsection information to the user terminal. | 06-10-2010 |
20100215339 | Refined quality feedback in streaming services - A method for quality feedback in a streaming service is shown, wherein at least one media stream is streamed to a client for playback, the method comprising determining a quality feedback value according to at least one quality metric from a pre-defined set of quality metrics, wherein the pre-defined set of quality metrics contains a quality metric related to at least one of the playback of the at least one media stream and a corruption of one out of at least two types of frames contained in the at least one media stream, and reporting the quality feedback value to a server. A system, a client, a server, a computer program, a computer program product and a protocol for quality feedback are also shown. | 08-26-2010 |
20130107954 | CARRIAGE OF SEI MESSAGES IN RTP PAYLOAD FORMAT | 05-02-2013 |
20130121413 | CARRIAGE OF SEI MESSAGES IN RTP PAYLOAD FORMAT - A system and method of modifying error resiliency features by conveying temporal level 0 picture indices, such as t10_pic_idx, within an SEI message instead of optionally including them in the NAL unit header is provided. In addition, a mechanism is provided for enabling repetition of any SEI messages in Real-Time Transport Protocol (RTP) packets. Enabling such repetition of any SEI messages facilitates detection of lost temporal level 0 pictures on the basis of any received packet. | 05-16-2013 |
20130297786 | CLASSIFIED MEDIA QUALITY OF EXPERIENCE - A method for reporting a streaming quality is shown, wherein at least one continuous media stream is streamed to a client ( | 11-07-2013 |
20140269940 | PICTURE DELIMITER IN SCALABLE VIDEO CODING - The use of a picture delimiter that is contained in a NAL unit type value that is reserved in the current AVC or SVC specification. The present invention provides the scalability information for the H.264/AVC base layer in such a manner that bitstreams remain decodable with H.264/AVC decoders. In addition, the picture delimiter of the present invention may contain many other syntax elements that can help in easier processing of bitstreams compared to the plain H.264/AVC bitstream syntax. | 09-18-2014 |
20140307802 | CODING, STORAGE AND SIGNALLING OF SCALABILITY INFORMATION - A method and device for encoding, decoding, storage and transmission of a scalable data stream to include layers having different coding properties including: producing one or more layers of the scalable data stream, wherein the coding properties include at least one of the following: Fine granularity scalability information; Region-of-interest scalability information; Sub-sample scalable layer information; Decoding dependency information; and Initial parameter sets, and signaling the layers with the characterized coding property such that they are readable by a decoder without the need to decode the entire layers. A corresponding method of encoding, decoding, storage, and transmission of a scalable bit stream is also disclosed, wherein at least two scalability layers are present and each layer has a set of at least one property, such as those above identified. | 10-16-2014 |
20150055712 | CARRIAGE OF SEI MESSAGES IN RTP PAYLOAD FORMAT - A system and method of modifying error resiliency features by conveying temporal level 0 picture indices, such as tl0_pic_idx, within an SEI message instead of optionally including them in the NAL unit header is provided. In addition, a mechanism is provided for enabling repetition of any SEI messages in Real-Time Transport Protocol (RTP) packets. Enabling such repetition of any SEI messages facilitates detection of lost temporal level 0 pictures on the basis of any received packet. | 02-26-2015 |