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Estévez et al., 2009 - Google Patents

Implementation of a media synchronization algorithm for multistandard IP set-top box systems

Estévez et al., 2009

Document ID
1292506559158267004
Author
Estévez E
Samper D
Pescador F
Juárez E
Sanz C
Publication year
Publication venue
VLSI Circuits and Systems IV

External Links

Snippet

Media synchronization at network context minimizes the effects of the network jitter and the skew between the emitter and receiver clocks. Theoretical algorithms cannot always be implemented on real systems for the architecture differences between a real and a …
Continue reading at www.spiedigitallibrary.org (other versions)

Classifications

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    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of content streams, manipulating MPEG-4 scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of content streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
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    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network, synchronizing decoder's clock; Client middleware
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetized elementary stream
    • H04N21/4347—Demultiplexing of several video streams
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    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a Uniform Resource Locator [URL] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetized elementary stream
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    • H04N21/4302—Content synchronization processes, e.g. decoder synchronization
    • H04N21/4305—Synchronizing client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets
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    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
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    • H04N21/8547—Content Authoring involving timestamps for synchronizing content
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    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
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