Patent application number | Description | Published |
20110191414 | METHOD AND APPARATUS FOR EFFICIENT HTTP STREAMING - A method and apparatus provide streaming delivery of data such as media data (video, audio) using a non-streaming delivery mechanism such as HTTP along with server-side pacing of the delivery. An initial portion of the media data is preloaded to a client buffer in a bursting manner to minimize latency. The method may include client request verification, support for client self-pacing, and support for catch-up pacing reductions. A proxy server apparatus may also be used which employs both server-side and client-side pacing and may include caching and both cache and client preloading for minimized latency. A similar proxy server apparatus may be used to provide an efficient alternative to client polling for data from a polled data service, such as stock quotes etc., using streaming updates. The method may include support for stream modification through persistent client requests. | 08-04-2011 |
20120002717 | METHOD AND SYSTEM FOR LIVE STREAMING VIDEO WITH DYNAMIC RATE ADAPTATION - A live streaming system/method provides cross platform live streaming capabilities to mobile devices. A file format compatible with legacy HTTP infrastructure is used to deliver media over a persistent connection. Legacy client media players can dynamically change the encoded rate of the media delivered over a persistent connection. Standard HTTP servers may be used without modification, leveraging standard media players embedded in mobile devices for seamless media delivery over wireless networks with high bandwidth fluctuations. | 01-05-2012 |
20120004960 | METHOD AND SYSTEM FOR EFFICIENT STREAMING VIDEO DYNAMIC RATE ADAPTATION - A streaming media system employs dynamic rate adaptation. The method includes a file format compatible with legacy HTTP infrastructure to deliver media over a persistent connection. The method further includes the ability for legacy client media players to dynamically change the encoded delivery rate of the media over a persistent connection. The method provided works transparently with standard HTTP servers, requiring no modification and leverages standard media players embedded in mobile devices for seamless media delivery over wireless networks with high bandwidth fluctuations. A system is also specified for implementing a client and server in accordance with the method. | 01-05-2012 |
20120005364 | SYSTEM AND METHOD FOR NETWORK AWARE ADAPTIVE STREAMING FOR NOMADIC ENDPOINTS - In a system for streaming data over a network, the type and rate of streaming are automatically varied based on available network bandwidth. Video media is transcoded into different bit rate encodings that are divided into segment files. Segments are sent from a network-aware adaptive streaming (NAAS) server and reassembled and presented to a media player at a client device. The system may download additional segment files ahead of time from multiple NAAS servers to increase throughput. A playback status (“bookmark”) may be maintained to keep track of what the user has viewed and to allow the user to continue playing from where the user left off. The user may continue watching from the bookmark point on the same device or on a different device. | 01-05-2012 |
20120005365 | METHOD AND SYSTEM FOR EFFICIENT STREAMING VIDEO DYNAMIC RATE ADAPTATION - A streaming media system employs dynamic rate adaptation. The method includes a file format compatible with legacy HTTP infrastructure to deliver media over a persistent connection. The method further includes the ability for legacy client media players to dynamically change the encoded delivery rate of the media over a persistent connection. The method provided works transparently with standard HTTP servers, requiring no modification and leverages standard media players embedded in mobile devices for seamless media delivery over wireless networks with high bandwidth fluctuations. A system is also specified for implementing a client and server in accordance with the method. | 01-05-2012 |
20120005366 | METHOD AND APPARATUS FOR RETRIEVING AND RENDERING LIVE STREAMING DATA - A live streaming system/method provides cross platform live streaming capabilities to mobile devices. A file format compatible with legacy HTTP infrastructure is used to deliver media over a persistent connection. Legacy client media players can dynamically change the encoded rate of the media delivered over a persistent connection. Standard HTTP servers may be used without modification, leveraging standard media players embedded in mobile devices for seamless media delivery over wireless networks with high bandwidth fluctuations. | 01-05-2012 |
20120011267 | LIVE STREAMING MEDIA DELIVERY FOR MOBILE AUDIENCES - A live streaming system/method provides cross platform live streaming capabilities to mobile devices. The live streaming system includes a live streaming recorder operative to (1) capture a live media stream generated by a live media source and save the captured live media stream as a recorded stream in a recorded media file, and (2) transcode the recorded stream into a plurality of transcoded media files of respective different media encoding formats. The system further includes a stream distribution subsystem operative to generate a plurality of distributed media streams each generated from one or more of the transcoded media files, each distributed media stream being delivered to a corresponding set of the mobile endpoint devices. | 01-12-2012 |
20120240176 | METHOD AND SYSTEM FOR FEDERATED OVER-THE-TOP CONTENT DELIVERY - A method is provided for managing over-the-top delivery of content through a plurality of content delivery networks (CDN). The method provided works transparently with standard HTTP servers supporting an initial request for content from a client to a first preferred CDN. If the first CDN does not have the content, the method includes provisions for the first CDN to acquire the content from a second CDN, or for the client to request the content from a second CDN directly. A system is also specified for implementing a client and server infrastructure in accordance with the provisions of the method. | 09-20-2012 |
20120265892 | METHOD AND SYSTEM FOR SECURE AND RELIABLE VIDEO STREAMING WITH RATE ADAPTATION - A system for media delivery includes a server-side proxy for aggregating and encrypting stream data for efficient HTTP-based distribution over an unsecured network. A client-side proxy decrypts and distributes the encapsulated stream data to client devices. A multicast-based infrastructure may be used for increased scalability. The encoded rate of the media delivered over the persistent HTTP proxy connections may be dynamically adapted. The client-side proxy may be integrated within a mobile device for maximum network security and reliability. | 10-18-2012 |
20120331293 | METHOD AND SYSTEM FOR SECURE OVER-THE-TOP LIVE VIDEO DELIVERY - A method is provided for managing key rotation (use of series of keys) and secure key distribution in over-the-top content delivery. The method provided supports supplying a first content encryption key to a content packaging engine for encryption of a first portion of a video stream. Once the first content encryption key has expired, a second content encryption key is provided to the content packaging engine for encryption of a second portion of a video stream. The method further provides for notification of client devices of imminent key changes, as well as support for secure retrieval of new keys by client devices. A system is also specified for implementing a client and server infrastructure in accordance with the provisions of the method. | 12-27-2012 |
20130019273 | METHOD AND SYSTEM FOR TRICK PLAY IN OVER-THE-TOP VIDEO DELIVERY - A method for trick play (fast forward, rewind, etc.) in video streams using adaptive bitrate HTTP delivery protocols includes playing only portions of a video at a current bitrate to achieve the initial trick play functionality. A new trick play bitrate is selected based on a trick play playout rate, the trick play bitrate for the duration of the trick play is retrieved, and operation is switched back to a previous bitrate when normal playback resumes. A system is also specified for implementing a client and server infrastructure in accordance with the method. | 01-17-2013 |
20130097309 | METHOD AND APPARATUS FOR CARRIER CONTROLLED DYNAMIC RATE ADAPTATION AND CLIENT PLAYOUT RATE REDUCTION - A method and system is provided for controlling bandwidth rate limiting and client rendering rate limiting in a video delivery network. The method provides network service providers with a means for overriding video delivery data rates selected through dynamic client bitrate adaptation, as well as video data rendering rates of the clients, to limit the impact of network congestion. A system is also specified for implementing a client and a proxy computer in accordance with the method. The system works transparently with standard HTTP-based video delivery systems and includes an HTTP proxy cache infrastructure to support bandwidth rate limiting and client rending rate limiting. The system further provides for administrative overrides of client bitrate selection and client bandwidth usage. | 04-18-2013 |
20130152180 | DEVICE USING SECURE PROCESSING ZONE TO ESTABLISH TRUST FOR DIGITAL RIGHTS MANAGEMENT - A DRM client on a device establishes trust with a DRM server for playback of digital content. The client executes in a secure execution environment, and the process includes (1) securely loading loader code from secure programmable memory and verifying it using a digital signature scheme and first key securely stored in the device; (2) by the verified loader code, loading DRM client code from the memory and verifying it using a digital signature scheme and second key included in the loader code; (3) by the verified DRM client code (a) obtaining a domain key from the memory; (b) encrypting the domain key with a device identifier using a DRM system key included in the DRM client code; and (c) sending the encrypted domain key and device identifier to the DRM server, whereby the device becomes registered to receive content licenses via secure communications encrypted using the domain key. | 06-13-2013 |
20130282890 | IN-STREAM COLLECTION OF ANALYTICS INFORMATION IN A CONTENT DELIVERY SYSTEM - Analytics information is collected in a content delivery network when content requests are received by a content router. Analytics information may be gleaned from uniform resource identifiers, and additional augmented analytics information may be specified by either the client that issued the request or an intermediate network node that proxied the request. The augmented analytics information may be specified in proprietary HTTP header fields. Information collection includes intercepting content requests; correlating URIs with known content assets; associating content requests with session state; extracting downstream node augmented information from the content requests; updating session information in persistent storage; selecting target locations from which to retrieve the content assets; and redirecting the content requests to the target locations. | 10-24-2013 |
20130297815 | SERVER-SIDE CLASS-OF-SERVICE-BASED BANDWIDTH MANAGEMENT IN OVER-THE-TOP VIDEO DELIVERY - A server device delivers content to a client device by sending the content as a series of segments using chunked delivery. The sending is paced in accordance with a class of service for the client device, the class of service having an associated target chunk send time that decreases with higher classes of service. Pacing includes sending a chunk over an actual chunk send time and calculating an inter-chunk delay as a difference between the target chunk send time and the actual chunk send time. If the inter-chunk delay is positive, then the server waits the inter-chunk delay before beginning to send a next successive chunk, and otherwise it immediately begins sending the next successive chunk. The server also employs bitrate selection to manage client use of available bandwidth. | 11-07-2013 |
20140047069 | METHOD AND SYSTEM FOR FEDERATED OVER-THE-TOP CONTENT DELIVERY - A method is provided for managing over-the-top delivery of content through a plurality of content delivery networks (CDN). The method provided works transparently with standard HTTP servers supporting an initial request for content from a client to a first preferred CDN. If the first CDN does not have the content, the method includes provisions for the first CDN to acquire the content from a second CDN, or for the client to request the content from a second CDN directly. A system is also specified for implementing a client and server infrastructure in accordance with the provisions of the method. | 02-13-2014 |
20140095729 | CLIENT-SIDE CLASS-OF-SERVICE-BASED BANDWIDTH MANAGEMENT IN OVER-THE-TOP VIDEO DELIVERY - A client device downloads content from a content delivery network as segments encoded at respective bitrates selected from distinct encoding bitrates. Downloading is paced per a class of service having an associated abort timeout increasing with higher classes of service. Pacing includes downloading a segment encoded at a first bitrate and monitoring for the earlier of completing the downloading or aborting the downloading based on the abort timeout. Upon the downloading being aborted, a first backoff duration is calculated as a remainder of a playback interval and the first backoff duration is waited before downloading of the same segment is re-initiated at a second bitrate less than the first bitrate. Upon the downloading completing successfully, a second backoff duration is calculated and the second backoff duration is waited before downloading is initiated of a next segment encoded at either the first bitrate or at a greater third bitrate. | 04-03-2014 |
20140149210 | METHOD AND SYSTEM FOR AD INSERTION IN OVER-THE-TOP LIVE MEDIA DELIVERY - A method is provided for performing targeted ad insertion in over-the-top delivery of content by detecting ad replacement opportunities in a live content stream and preparing the content for seamless replacement with segmented HTTP adaptive streaming delivery. The method includes provisions for multi-stage proxy-based segment replacement for targeted ad delivery. The method provided works transparently with standard HTTP adaptive streaming clients. A system is also specified for implementing a client and server content delivery infrastructure in accordance with the provisions of the method. | 05-29-2014 |
20140150019 | METHOD AND SYSTEM FOR AD INSERTION IN OVER-THE-TOP LIVE MEDIA DELIVERY - A method is provided for performing targeted ad insertion in over-the-top delivery of content by detecting ad replacement opportunities in a live content stream and preparing the content for seamless replacement with segmented HTTP adaptive streaming delivery. The method includes provisions for multi-stage proxy-based segment replacement for targeted ad delivery. The method provided works transparently with standard HTTP adaptive streaming clients. A system is also specified for implementing a client and server content delivery infrastructure in accordance with the provisions of the method. | 05-29-2014 |
20140237243 | METHOD AND SYSTEM FOR SECURE OVER-THE-TOP LIVE VIDEO DELIVERY - A method is provided for managing key rotation (use of series of keys) and secure key distribution in over-the-top content delivery. The method provided supports supplying a first content encryption key to a content packaging engine for encryption of a first portion of a video stream. Once the first content encryption key has expired, a second content encryption key is provided to the content packaging engine for encryption of a second portion of a video stream. The method further provides for notification of client devices of imminent key changes, as well as support for secure retrieval of new keys by client devices. A system is also specified for implementing a client and server infrastructure in accordance with the provisions of the method. | 08-21-2014 |
20150074831 | Method and System for Federated Over-the-Top Content Delivery - A method is provided for managing over-the-top delivery of content through a plurality of content delivery networks (CDN). The method provided works transparently with standard HTTP servers supporting an initial request for content from a client to a first preferred CDN. If the first CDN does not have the content, the method includes provisions for the first CDN to acquire the content from a second CDN, or for the client to request the content from a second CDN directly. A system is also specified for implementing a client and server infrastructure in accordance with the provisions of the method. | 03-12-2015 |