Patent application number | Description | Published |
20130290697 | System and Method for Signaling Segment Encryption and Key Derivation for Adaptive Streaming - An apparatus for decoding a media stream, wherein the apparatus comprises a memory module, a processor module coupled to the memory module, wherein the memory module contains instructions that when executed by the processor cause the apparatus to perform the following: receive a media stream comprising a segment signaling information and a plurality of segments, wherein the plurality of segments comprises encoded and unencoded segments, wherein the segment signaling information comprises identification of at least two segment groups each comprising at least one segment, identify at least one segment group using the segment signaling information in the media stream, identify at least one segment decoding algorithm for the at least one segment group, identify at least one decoding key for the at least segment group, and decode each encoded segment within the at least segment group using the at least segment decoding algorithm and the at least one decoding key. | 10-31-2013 |
20130291082 | Systems and Methods for Segment Integrity and Authenticity for Adaptive Streaming - System and method embodiments are provided for segment integrity and authenticity for adaptive streaming. In an embodiment, the method includes receiving at a data processing system a segment of a media stream, determining, with the data processing system, a digest or a digital signature for the segment, and comparing, with the data processing system, the digest/digital signature to a correct digest or a correct digital signature to determine whether the segment has been modified. | 10-31-2013 |
20130347123 | MEDIA DATA PROCESSING METHOD AND APPARATUS - Embodiments of the present invention provide a media data processing method and apparatus. The media data processing method includes: obtaining each media segment in a coding representation; and performing content protection processing on at least a part of media segments in the coding representation. In the embodiments of the present invention, a media segment in a coding representation is used as a unit of content protection, and the content protection may be performed on at least a part of media segments in the coding representation, so that protection manners of media segments in the coding representation are differentiated, so as to improve reliability and flexibility of performing the content protection on an HTTP streaming media service. | 12-26-2013 |
20140020111 | Signaling and Handling Content Encryption and Rights Management in Content Transport and Delivery - An apparatus comprising a memory, a processor coupled to the memory and configured to obtain a protection description for media content comprising a plurality of content items, wherein the protection description comprises data signaling at least two protection mechanisms for at least two content items in a media content, wherein each of the at least two content items is protected by one or more of the at least two protection mechanisms, and wherein the protection mechanisms for the at least two content items are different, determine the protection mechanisms for the at least two content items from the data, and process the at least two content items according to their associated protection mechanisms. | 01-16-2014 |
20140096271 | Segment Authentication for Dynamic Adaptive Streaming - A method comprising generating a segment signature for a segment of a media content based on the segment, trusted information contained in a media presentation description (MPD), and a signature signing key, wherein the MPD describes the media content. An apparatus comprising a processor configured to compute a segment signature for a segment of a media content based on the segment, a signature signing key, and trusted information contained in a media presentation description (MPD), wherein the MPD describes the media content. | 04-03-2014 |
20140201334 | Storing and Transmitting Content for Downloading and Streaming - A method implemented by a first client device, the method comprising receiving a media presentation description (MPD) for a media content from a streaming server, receiving a plurality of segments for the media content from one or more streaming servers, and packaging the MPD and at least part of the received segments such that the packaged segments are accessible by a second client device through the packaged MPD. | 07-17-2014 |
20140304297 | Method, Server, and User Terminal for Providing and Acquiring Media Content - A method, a server, and a user terminal for providing and acquiring media content are provided. The providing method includes: receiving a file segment acquiring request sent by a user terminal, where the file segment acquiring request is generated and sent by the user terminal according to an identifier of the user terminal, and the media segment description file includes a storage address and an embedded identifier of each media file segment that is divided from media content; and providing the user terminal with a media file segment that is embedded with the identifier of the user terminal. In the technical solution of the present invention, a server no longer processes media content in real time and responds to an acquiring request of a user terminal, thereby reducing concurrent load of the server and reducing concurrent bandwidth occupied by media content distribution. | 10-09-2014 |
20140365759 | Signaling and Carriage of Protection and Usage Information for Dynamic Adaptive Streaming - A Dynamic Adaptive Streaming over Hypertext Transport Protocol (DASH) server component is disclosed. The DASH server component may comprise a memory, a processor coupled to the memory, and a transmitter coupled to the processor. The processor may be configured to generate one or more keys containing content protection information for media content, associate the keys with one or more segments of media content, store the keys in a DASH metadata track in the memory, and generate a media presentation description (MPD) specifying an association between the keys and the segments of media content. The transmitter may be configured to transmit the keys to at least one client independently of transmitting the media content and transmit the MPD to the at least one client. | 12-11-2014 |
20150032854 | SYSTEM AND METHOD FOR NETWORK-ASSISTED ADAPTIVE STREAMING - A system, method and device are configured to guarantee bandwidth to adaptive streaming clients through negotiation with a network unit to achieve better quality of services in adaptive streaming that utilizes network bandwidth conditions more accurately than based on client estimations. | 01-29-2015 |
20150032855 | SYSTEM AND METHOD FOR EFFECTIVELY CONTROLLING CLIENT BEHAVIOR IN ADAPTIVE STREAMING - The present invention teaches new solutions based on an alternative approach to controlling client behavior in adaptive streaming applications, namely, server managed adaptive streaming. in this approach, the client makes requests for streaming content and provides extra information about its behaviors, and the server verifies the information to determine if the requests can be granted. This way, even if the client is not trusted, its behaviors can be properly and effectively controlled. Moreover, all of the solutions resulting from adopting this server managed adaptive streaming approach fit into the MPEG/3GPP standards of Dynamic Adaptive Streaming over HTTP (DASH). | 01-29-2015 |
20150032901 | SYSTEM AND METHOD FOR SPATIAL ADAPTATION IN ADAPTIVE STREAMING - Systems, methods, and devices for spatial adaptation with dynamic adaptive streaming are disclosed. In an embodiment, systems, methods and devices are disclosed for signaling a spatial relationship of one or more tiles in a tiled presentation with an attribute in a media presentation description. In other embodiments, systems, methods and devices are disclosed for server-managed adaptive streaming wherein a client generates and transmits a spatial adaptation URL query parameter to the server for free-zooming or free view-angle spatial adaptation to a region of interest. | 01-29-2015 |
20150052259 | Method For Generating Media Information, Terminal, Server, and AHS System - The present invention discloses a method for generating media information, a terminal, a server, and an adaptive streaming system. Media code streams of m types of code rate, which are generated by an AHS system, are divided into h groups, and tracing codes are separately embedded into code stream segments of each group. The tracing codes embedded into the code stream segments, and code stream group information are stored in a media presentation description MPD file. In a downloading process of a terminal, tracing of an end user that downloads media data is implemented. | 02-19-2015 |