Patent application number | Description | Published |
20090185562 | METHODS AND APPARATUS FOR AN EFFICIENT MULTICAST FILE DISTRIBUTION SYSTEM - Methods and apparatus for an efficient multicast file distribution system. A method for transmitting a file over a distribution network includes encoding the file with a selected encoding scheme to form encoded packets, generating file delivery protocol (FDP) packets from the encoded packets, generating a file delivery control protocol (FDCP) packet that comprises control information associated with the FDP packets, and transmitting the FDCP packet and the FDP packets over the distribution network. A method for receiving a file over a distribution network includes receiving a FDCP packet and FDP packets, decoding the FDP packets based on the FDCP packet to generate encoded packets, and generating at least a portion of the file from the encoded packets. | 07-23-2009 |
20090210706 | METHODS AND APPARATUS FOR CONDITIONAL ACCESS OF NON REAL-TIME CONTENT IN A DISTRIBUTION SYSTEM - Methods and apparatus for conditional access of non real-time (NRT) content in a distribution system. A method includes encrypting NRT content with a control word (CW) to generate encrypted NRT content, providing the CW to entitlement control message (ECM) generators, receiving ECMs from the ECM generators, wherein each ECM comprises a unique encryption of the CW to provide conditional access to the CW, and providing the encrypted NRT content and the ECMs for transmission over a distribution network. An apparatus includes a synchronizer configured to provide a CW to ECM generators and receive ECMs from the ECM generators, wherein each ECM comprises a unique encryption of the CW to provide conditional access to the CW, and a management module configured to encrypt the NRT content with the CW to generate encrypted NRT content and provide the encrypted NRT content and the ECMs for transmission over the distribution network. | 08-20-2009 |
20100005164 | METHODS AND APPARATUS FOR PROVIDING A CONTROL CHANNEL IN A DATA NETWORK - Methods and apparatus for providing a control channel in a data network. A method is provided that operates to provide a control channel in a data network. The method includes receiving one or more server digests, and generating a control channel digest from the one or more server digests. The method also includes communicating with a device, and transmitting the control channel digest to the device. | 01-07-2010 |
20100087225 | Method and System for Mapping Provisioning Information of Different Communications Networks - A wireless communications device is configurable to communicate with either one of two networks over a wireless medium, each of the two networks having a different air interface protocol. Additionally, the wireless device includes stored provisioning information for a set of networks of a first type and can map this first provisioning information into a second format for use with networks of a second type. The device also includes a non-volatile memory for storing default provisioning information so that some information remains available regardless of what is erased from the memory. The default provisioning information is enough to establish a connection over one of the available networks and allow reconstruction of a provisioning list. | 04-08-2010 |
20100235717 | METHODS AND APPARATUS FOR PROVIDING LINEAR ERASURE CODES - Methods and apparatus for providing linear erasure codes. In one aspect, a method is provided for encoding a set of data values into a code symbol. The method includes determining an index sequence that defines selected data values to be used to generate the code symbol, and determining a value sequence that defines factors to be multiplied by the selected data values to generate the code symbol. The method also includes generating a packet header that describes the index sequence and the value sequence. | 09-16-2010 |
20110194570 | METHODS AND APPARATUS FOR PROVIDING LINEAR ERASURE CODES - Methods and apparatus for providing linear erasure codes. In one aspect, a method is provided for encoding a set of data values into a code symbol. The method includes determining an index sequence that defines selected data values to be used to generate the code symbol, and determining a value sequence that defines factors to be multiplied by the selected data values to generate the code symbol. The method also includes generating a packet header that describes the index sequence and the value sequence. | 08-11-2011 |
20110295978 | FILE DELIVERY OVER A BROADCAST NETWORK USING FILE SYSTEM ABSTRACTION, BROADCAST SCHEDULE MESSAGES AND SELECTIVE RECEPTION - Methods, systems and devices provide mechanisms and systems for efficiently delivering files over a broadcast system to mobile devices. Files for broadcast may be logically identified as belonging to a directory in a file system. A Broadcast Schedule Message may inform receiver devices of files that will be broadcast at a specified time, as well as describe the files. File may be transmitted in file delivery pipes, which may be of different bandwidth and data rates. Receiver devices configured according to the embodiments may make use of the broadcast schedule message to select files to be received based on the service or application with which the file is associated, and whether the file is new or an update to a previously received file. Receiver devices activate receiver circuitry to capture the files within their advertised broadcast window, and pass the received files to applications or services requesting the files. | 12-01-2011 |
20110299587 | METHODS AND SYSTEMS FOR RESIZING MULTIMEDIA CONTENT BASED ON QUALITY AND RATE INFORMATION - In general, this disclosure describes techniques for exchanging information between a plurality of encoder modules and a multiplex module to combine segments of data from the encoder modules with an improved overall quality. In particular, the encoder modules associate their respective segments of data with quality and rate information and send at least the quality and rate information associated with the segments of data to the multiplex module. The multiplex module analyzes the quality and rate information to determine whether the segments of data that encoder modules desire to include in the current superframe fit within the available bandwidth of a transmission channel. If the multiplex module determines the plurality of segments of data do not fit within the available bandwidth, the multiplex module selects one or more of the segments to be resized based on the quality and rate information received from the encoder modules. | 12-08-2011 |
20120106414 | METHODS AND APPARATUS FOR ENCODING DATA IN A COMMUNICATION NETWORK - Methods and apparatus for encoding data in a communication network. In an aspect, a method is provided for coding data. The method includes generating one or more permutations of the data, determining weights associated with each permutation, calculating one or more code packets from each permutation based on the associated weights, and multiplexing the data and the one or more code packets into a code packet stream. In an aspect, an apparatus is provided for coding data. The apparatus includes permutation logic configured to generate one or more permutations of the data, and weight logic configured to determine weights associated with each permutation. The apparatus also includes processing logic configured to calculate one or more code packets from each permutation based on the associated weights, and a multiplexer configured to multiplex the data and the one or more code packets into a code packet stream. | 05-03-2012 |
20120151302 | BROADCAST MULTIMEDIA STORAGE AND ACCESS USING PAGE MAPS WHEN ASYMMETRIC MEMORY IS USED - A receiving device for storing and accessing data transmitted from a source, the data generated from transport objects comprises multimedia content that uses a forward error correction code, is subject to network losses, and/or is transported interleaved. The device includes a receiving module configured to store the data in first access memory according to a page format, write the data formatted as pages to physical storage media, and generate a page structure map describing a relationship between the data written and a data structure of the multimedia content. An access module receives a request for a portion of the multimedia content, determines pages of data from the physical storage medium as including data corresponding to the requested portion according to the page structure map, stores the determined pages, and decodes the data corresponding to the requested portion from a requesting module. A media player receives the requested portion for consumption. | 06-14-2012 |
20120207075 | MULTICAST DATA DELIVERY MECHANISM USING PACKET BUNDLING OR FILE DELIVERY FRAMEWORK - Methods, systems and devices enable efficient delivery of UDP packets over broadcast systems to receiver devices. UDP packets may be bundled and embedded within files for transmission over a file delivery framework, to deliver UDP packets over a broadcast network. A broadcast schedule message (BSM) may inform receiver devices of files and UDP packets that will be broadcast at a specified time, as well as describe the files and UDP packets. Files may be transmitted in file delivery pipes, which may be of different bandwidth and data rates. Receiver devices configured according to the embodiments may make use of the BSM message to select the UDP packets to be received based on the service or application to which the UDP packets are associated. Receiver devices activate receiver circuitry to capture the files and the UDP packets contained therein and pass the received files to applications or services requesting the files. | 08-16-2012 |
20130060911 | STREAMING OF MULTIMEDIA DATA FROM MULTIPLE SOURCES - In one example, a device includes a plurality of interfaces, wherein each of the interfaces is communicatively coupled to a respective one of a plurality of sources, a stream management unit configured to select, using a manifest file for multimedia content, one of a plurality of representations from which to retrieve multimedia data of the multimedia content, wherein the manifest file includes information indicative of the plurality of representations of the multimedia content, wherein the plurality of representations includes the selected representation, wherein multimedia data for the representations is available from the plurality of sources, and wherein the stream management unit is configured to select one of the sources from which to retrieve multimedia data for the selected representation, and a source component configured to retrieve multimedia data for the selected representation from the selected source via the one of the interfaces that is communicatively coupled to the selected source. | 03-07-2013 |
20130060956 | NETWORK STREAMING OF CODED VIDEO DATA - In one example, a device configured to receive a first sub-segment of a segment of multimedia data, the first sub-segment comprising a first set of one or more data units and a first header including data indicative of locations of the data units within the first sub-segment, wherein at least one of the data units refers to a data unit of a second sub-segment of the segment. The device is also configured to, after receiving the first sub-segment, receive the second sub-segment, the second sub-segment comprising a second set of one or more data units and a second header including data indicative of locations of the data units within the second sub-segment. The device is also configured to process at least a portion of the segment after receiving the first sub-segment and the second sub-segment. | 03-07-2013 |
20130097287 | CONTROLLING STREAMING DELAY IN NETWORKS - Techniques are provided for reducing delay during streaming transmissions. For example, a method may include receiving a stream of data segments. The method may include establishing a first group of segments based on the data segments, and generating a first table of information. The method may include transmitting the first table and the first group of segments, and establishing a second group of segments based on the data segments, the second group of segments including a partial overlap of data segments included in the first group of segments. The method may include generating a second table of information, and transmitting the second table and a collection of segments that includes data segments from the second group that were not part of the first group. | 04-18-2013 |
20130142053 | METHOD AND AN APPARATUS TO OPTIMIZE MONITORING FOR A NEW EMBMS SESSION IN LTE NETWORKS - A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus is configured to monitor for a notification of MCCH information change associated with an MBSFN area without having previously performed an MCCH information acquisition procedure to acquire MCCH information in the MBSFN area. Furthermore, the apparatus is configured to acquire the MCCH information while monitoring for the notification of the MCCH information change that indicates a change of MCCH information. | 06-06-2013 |
20130254611 | RECOVERING DATA IN MULTIMEDIA FILE SEGMENTS - This application relates to systems and methods for recovering data in multimedia file segments. A communication device may receive a multimedia file segment that includes damaged data. The communication device may replace the damaged data with dummy data to reconstruct the multimedia file segment. The communication device may then play the reconstructed multimedia file segment. Thus, by replacing the damaged data with dummy data, the communication device may play a multimedia file segment even when part of the segment may be damaged. | 09-26-2013 |
20140032987 | REPLACING LOST MEDIA DATA FOR NETWORK STREAMING - In one example, a device includes one or more processors configured to determine that data for at least a portion of a segment of media data has been lost after a remaining portion of the segment has been received via a network transmission in accordance with dynamic adaptive streaming over HTTP (DASH), based on the determination, prior to decoding the media data, add default data to the segment to replace the data that has been determined to be lost to form a replacement segment, and output media data of the replacement segment. | 01-30-2014 |
20140189052 | DEVICE TIMING ADJUSTMENTS AND METHODS FOR SUPPORTING DASH OVER BROADCAST - The systems, methods, and devices of the various embodiments enable a receiver device to adjust timing of requests for segments based on the actual times when the segments will be available on the receiver device. In various embodiments, a receiver device may be enabled to modify a segment availability timeline in which the availability times of the segments are adjusted to provide the actual times when segments will be available on the receiver device. In various embodiments, segment availability time adjustments may be made at a service layer of the receiver device. In various embodiments, segment availability time adjustments may be made by a client application on the receiver device. In the various embodiments, a network delay jitter estimate may be provided. In an embodiment, a network delay jitter estimate may be provided in a segment availability timeline. | 07-03-2014 |
20140189066 | ELASTIC RESPONSE TIME TO HYPERTEXT TRANSFER PROTOCOL (HTTP) REQUESTS - The systems, methods, and devices of the various embodiments enable elastic response times to file requests by a server. In this manner, the server may account for unpredictable delay in object/segment availability and reduce the frequency that error messages (e.g., 404 error messages) are returned in response to file requests when file unavailability is temporary and due to network delays. | 07-03-2014 |