EP1295480A2 - Kompressionssystem und -verfahren zum gebrauch in einer set-top-box - Google Patents

Kompressionssystem und -verfahren zum gebrauch in einer set-top-box

Info

Publication number
EP1295480A2
EP1295480A2 EP01948749A EP01948749A EP1295480A2 EP 1295480 A2 EP1295480 A2 EP 1295480A2 EP 01948749 A EP01948749 A EP 01948749A EP 01948749 A EP01948749 A EP 01948749A EP 1295480 A2 EP1295480 A2 EP 1295480A2
Authority
EP
European Patent Office
Prior art keywords
images
format
jpeg
mpeg
gif
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP01948749A
Other languages
English (en)
French (fr)
Inventor
Brian Knittel
Donn Denman
Vincent Lue
Andrew C. Wong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PowerTV Inc
Original Assignee
PowerTV Inc
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 PowerTV Inc filed Critical PowerTV Inc
Publication of EP1295480A2 publication Critical patent/EP1295480A2/de
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • 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
    • H04N21/258Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
    • H04N21/25808Management of client data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/40Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof

Definitions

  • An image display system includes a web server with web pages containing images in a first format.
  • the first format includes a Graphics Interchange Format (GIF), a Joint Photographies Experts Group (JPEG) format and/or a Motion Pictures Experts Group (MPEG) format.
  • GIF Graphics Interchange Format
  • JPEG Joint Photographies Experts Group
  • MPEG Motion Pictures Experts Group
  • a distributed communications system is connected to the web server.
  • a proxy server is connected to the distributed communications system. The proxy server decompresses the first format images.
  • the proxy server converts the first format images to a second format that includes either JPEG or
  • FIG. 8A is a flowchart illustrating steps for converting a GIF image with animation into MPEG I-frame(s);
  • FIG. 8B is a flowchart illustrating steps for converting a GIF image with translucency into MPEG I-frame(s);
  • the set top box 26 is illustrated in further detail and includes an input/output interface 150, a processor 154, and memory 156 that can include random access memory (RAM), read only memory (ROM), and other electronic storage such as a hard drive, a floppy drive, an optical storage device, or any other suitable memory.
  • RAM random access memory
  • ROM read only memory
  • other electronic storage such as a hard drive, a floppy drive, an optical storage device, or any other suitable memory.
  • an operating system 160 is loaded into the memory 156.
  • a set top box browser 162 is also loaded into the memory 156 when needed.
  • the set top box 26 is connected to a broadcast network 163.
  • the set top box 26 is connected to the distributed communication system 18 in any of the ways described above with respect to FIG 2A.
  • the proxy server 22 creates a first JPEG frame 206 from the GIF image 202.
  • a second JPEG frame 208 or a GIF image is created therefrom.
  • the area 204 is transparent, a single bit for each pixel is sufficient to describe the transparent mask. In this situation, the transparent information is preferably sent as a GIF image. If the area 204 is translucent, 8 bits or more may be employed to describe the translucency mask for each pixel in the frame 200. In these circumstances, an MPEG I-frame (first embodiment) or JPEG frame (second embodiment) is preferably used.
  • control decompresses the GIF image.
  • control recovers GIF frames within the GIF image animation.
  • control creates an MPEG header and an MPEG I-frame for the frames as previously described.
  • control compresses the MPEG I- frame or frames and transmits the MPEG I-frame(s) to the set top box 26 and/or stores the MPEG I-frame(s) at the proxy server 22.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Computer Graphics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
EP01948749A 2000-06-29 2001-06-27 Kompressionssystem und -verfahren zum gebrauch in einer set-top-box Withdrawn EP1295480A2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US60701500A 2000-06-29 2000-06-29
US607015 2000-06-29
PCT/US2001/020413 WO2002003705A2 (en) 2000-06-29 2001-06-27 Compression system and method for use in a set top box environment

Publications (1)

Publication Number Publication Date
EP1295480A2 true EP1295480A2 (de) 2003-03-26

Family

ID=24430432

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01948749A Withdrawn EP1295480A2 (de) 2000-06-29 2001-06-27 Kompressionssystem und -verfahren zum gebrauch in einer set-top-box

Country Status (2)

Country Link
EP (1) EP1295480A2 (de)
WO (1) WO2002003705A2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7831992B2 (en) 2002-09-18 2010-11-09 General Instrument Corporation Method and apparatus for forwarding television channel video image snapshots to an auxiliary display device
WO2004040914A1 (en) * 2002-11-01 2004-05-13 Nokia Corporation A method and device for transcoding images
GB0402482D0 (en) * 2004-02-04 2004-03-10 Pioneer Digital Design Ct Ltd Interactive multimedia processing system and method
US7936933B2 (en) 2005-11-18 2011-05-03 Microsoft Corporation Accelerating video data decoding

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3184763B2 (ja) * 1995-06-07 2001-07-09 インターナショナル・ビジネス・マシーンズ・コーポレ−ション マルチメディア直接アクセス記憶装置及びフォーマット方法
US5721878A (en) * 1995-06-07 1998-02-24 International Business Machines Corporation Multimedia control system and method for controlling multimedia program presentation
US6421733B1 (en) * 1997-03-25 2002-07-16 Intel Corporation System for dynamically transcoding data transmitted between computers
US6104441A (en) * 1998-04-29 2000-08-15 Hewlett Packard Company System for editing compressed image sequences

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0203705A3 *

Also Published As

Publication number Publication date
WO2002003705A3 (en) 2003-01-23
WO2002003705A2 (en) 2002-01-10

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