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WO2006110975A8 - Multimedia system for mobile client platforms - Google Patents

Multimedia system for mobile client platforms

Info

Publication number
WO2006110975A8
WO2006110975A8 PCT/CA2005/000617 CA2005000617W WO2006110975A8 WO 2006110975 A8 WO2006110975 A8 WO 2006110975A8 CA 2005000617 W CA2005000617 W CA 2005000617W WO 2006110975 A8 WO2006110975 A8 WO 2006110975A8
Authority
WO
WIPO (PCT)
Prior art keywords
audio
multimedia
wireless clients
objects
video
Prior art date
Application number
PCT/CA2005/000617
Other languages
French (fr)
Other versions
WO2006110975A1 (en
Inventor
Mark Krebs
Original Assignee
Logovision Wireless Inc
Mark Krebs
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Logovision Wireless Inc, Mark Krebs filed Critical Logovision Wireless Inc
Priority to PCT/CA2005/000617 priority Critical patent/WO2006110975A1/en
Publication of WO2006110975A1 publication Critical patent/WO2006110975A1/en
Publication of WO2006110975A8 publication Critical patent/WO2006110975A8/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
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    • H04N7/00Television systems
    • H04N7/16Analogue secrecy systems; Analogue subscription systems
    • H04N7/173Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309Transmission or handling of upstream communications
    • H04N7/17336Handling of requests in head-ends
    • HELECTRICITY
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    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/103Selection of coding mode or of prediction mode
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    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
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    • H04N19/176Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
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    • H04N19/18Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a set of transform coefficients
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    • H04N19/186Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component
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    • H04N21/234Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2343Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234309Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 or from Quicktime to Realvideo
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    • H04N21/234Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
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    • H04N21/234318Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by decomposing into objects, e.g. MPEG-4 objects
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    • H04N21/25Management 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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    • H04N21/25Management 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
    • H04N21/266Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/2662Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
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    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/432Content retrieval operation from a local storage medium, e.g. hard-disk
    • H04N21/4325Content retrieval operation from a local storage medium, e.g. hard-disk by playing back content from the storage medium
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    • H04N21/433Content storage operation, e.g. storage operation in response to a pause request, caching operations
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    • H04N21/63Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
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    • H04N21/83Generation or processing of protective or descriptive data associated with content; Content structuring
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    • H04L65/80Responding to QoS

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

A method for multimedia playback and transmission to wireless clients is described. A host webserver transcodes a live digital or analog audio-visual or audio broadcast signal and splits the input stream into small multimedia objects of an efficient compression such as MPEG4/AAC, and then immediately deploys the objects to distributed content servers for a geographically dispersed population of wireless clients. A java applet object player, downloaded to wireless clients at the beginning of the multimedia on-demand session, interprets and decodes the multimedia objects as they are received, using multiple levels of optimization. The applet uses novel video and audio decoding optimizations which can be generically applied to many digital video and audio codecs, and specifically decodes Simple Profile MPEG4 video and Low Complexity AAC audio.
PCT/CA2005/000617 2005-04-22 2005-04-22 Multimedia system for mobile client platforms WO2006110975A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CA2005/000617 WO2006110975A1 (en) 2005-04-22 2005-04-22 Multimedia system for mobile client platforms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CA2005/000617 WO2006110975A1 (en) 2005-04-22 2005-04-22 Multimedia system for mobile client platforms

Publications (2)

Publication Number Publication Date
WO2006110975A1 WO2006110975A1 (en) 2006-10-26
WO2006110975A8 true WO2006110975A8 (en) 2008-01-24

Family

ID=37114645

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2005/000617 WO2006110975A1 (en) 2005-04-22 2005-04-22 Multimedia system for mobile client platforms

Country Status (1)

Country Link
WO (1) WO2006110975A1 (en)

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CN103814406A (en) * 2011-07-12 2014-05-21 奥林奇公司 Adaptation of analysis or synthesis weighting windows for transform encoding or decoding

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WO2009055896A1 (en) 2007-11-02 2009-05-07 Vantrix Corporation System and method for predicting the file size of images subject to transformation by scaling and a change of quality-controlling parameters
US8270739B2 (en) 2007-12-03 2012-09-18 Ecole De Technologie Superieure System and method for quality-aware selection of parameters in transcoding of digital images
KR101459395B1 (en) 2007-11-02 2014-11-10 에꼴 드 테크놀로지 수페리에르 System and method for quality-aware selection of parameters in transcoding of digital images
US10108738B2 (en) * 2008-10-30 2018-10-23 Raja Singh Tuli Image transmission method
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