摘要:
A network digital video recording (nDVR) system may take into account the capabilities of a requesting user's local DVR when managing network recordings. The user's local DVR may include a temporary buffer that is normally used to record what the DVR is tuned to, and may be used for local trickplay functionality such as pausing live television. The nDVR features described herein may track the usage of the user's temporary DVR buffer, and use that in determining what to stream in response to a user's playback request. The nDVR system can also determine if the user's local DVR has an unused tuner at a time of a program recording, and can instruct the user's local DVR to also tune to the program.
摘要:
An apparatus, method, system and computer-readable medium are provided for generating one or more segments associated with content. The segments may include fragments that may correspond to portions of the content. The segments and/or the fragments may be included in a playlist, and may be based at least in part on a user selection.
摘要:
A method and system for delivering content is provided. In one example, responsive to a request by a client device identifying a video program, the system is configured to determine different first and second network paths for delivery of the video program from a content source; deliver the video program via the first network path to the client device; and responsive to a change in status of the video program being delivered via the first network path, deliver the video program via the second network path to the client device.
摘要:
An archive model can be used for managing networked storage of recorded content, such as network DVR (digital video recorder) content. Content may be initially recorded to an active storage device, with individual duplicate copies recorded for each requesting user, and subsequently archived to an archive storage device. For playback, the content can be reconstituted into the active storage device prior to delivery to the requesting user. Content can be predictively reconstituted in anticipation of user needs, and the reconstitution capacity of the system can be dynamically reallocated for load balancing.
摘要:
Tokens and policy descriptors are used for dynamic on demand session management in a distributed and scalable architecture for on demand sessions and resource management. The architecture includes an on demand client, a purchase server, and a session manager. A purchase token is generated at the purchase server and assigned to the on demand client. The purchase token represents at least one requested asset. In response to an on demand session set-up request corresponding to the purchase token from the on demand client to the session manager, the purchase token is expanded to generate at least one dynamic policy management descriptor for the on demand session. This provides token-based purchase authorization and policy management for on demand services.
摘要:
A method and system for delivering content is provided. In one example, responsive to a request by a client device identifying a video program, the system is configured to determine different first and second network paths for delivery of the video program from a content source; deliver the video program via the first network path to the client device; and responsive to a change in status of the video program being delivered via the first network path, deliver the video program via the second network path to the client device.
摘要:
Methods, apparatus, and network oriented systems are discussed for estimating system, e.g. web site, usage removed from the web site, as well as scheduling and directing a data broadcast source to provide content based on web site usage estimates and predictions in a broadcast data stream.
摘要:
A secondary packetized data stream, such as a commercial, is spliced with a primary packetized data stream, such as a network television program. The system does not require decompression of the data in the primary data stream, and is particularly suitable for use at a cable system headend to allow the insertion of commercials from local businesses into a nationally broadcast television program. When a start signal is received, a pre-splicing packet of the primary stream is determined. The pre-splicing packet is the packet closest to the start time which carries an anchor frame (e.g., I or P frame) start code. To prevent a potential discontinuity at the decoder, the pre-splicing packet is processed to discard the anchor frame data, and to insert a number of stuffing bytes which is equal to the number of bytes discarded into an adaptation field of the pre-splicing packet. To further maintain continuity at the decoder, identifying data of the primary stream such as PID and PSI data, is retrieved and provided to the secondary stream. A number of null packets are inserted into the output stream at the transition point between the main program and the commercial to prevent a buffer overflow at a decoder which receives the output stream.
摘要:
Aspects of the disclosure relate to control of consumption of content in an appliance. The content can include linear programming and non-linear assets. Such control can permit (i) changing a channel in the appliance (e.g., a CPE without upstream functionality) and thus selecting a linear-programming asset, a non-linear asset, and so forth, and (ii) controlling consumption of such assets. In one aspect, a device with upstream network connectivity can control the consumption of media in the appliance. The device can leverage data management and control functionality of a service provider network to acquire information related to assets available for consumption and to transmit asset requests to the service provider network, which can transmit content and signaling to the appliance in accordance at least in part with the asset request, thus controlling media consumption in the appliance.
摘要:
A two-beam interference lithography system offers large-area nanopatterning with tunability of pattern periodicities. The tunable feature is achieved by placing two rotatable mirrors in the two expanded beam paths which can conveniently be regulated for the designed pattern periodicities. While the effective interference pattern coverage is mainly determined by the optical coherence length and mirror size, the minimum pattern coverage area is as large as the effective coherence length of the laser and the selected mirror size over a wide range of periodicities.