CA2388606A1 - Picture-in-picture and multiple video streams using slice-based encoding - Google Patents

Picture-in-picture and multiple video streams using slice-based encoding Download PDF

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Publication number
CA2388606A1
CA2388606A1 CA002388606A CA2388606A CA2388606A1 CA 2388606 A1 CA2388606 A1 CA 2388606A1 CA 002388606 A CA002388606 A CA 002388606A CA 2388606 A CA2388606 A CA 2388606A CA 2388606 A1 CA2388606 A1 CA 2388606A1
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Canada
Prior art keywords
slices
packets
encoding
video streams
bitstream
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Granted
Application number
CA002388606A
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French (fr)
Other versions
CA2388606C (en
Inventor
Donald F. Gordon
Sadik Bayrakeri
Edward A. Ludvig
Eugene Gershtein
Jeremy S. Edmonds
John Comito
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Comcast IP Holdings I LLC
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Individual
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Publication date
Priority claimed from US09/428,066 external-priority patent/US6651252B1/en
Application filed by Individual filed Critical Individual
Priority to CA2680673A priority Critical patent/CA2680673C/en
Publication of CA2388606A1 publication Critical patent/CA2388606A1/en
Application granted granted Critical
Publication of CA2388606C publication Critical patent/CA2388606C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 video streams, manipulating MPEG-4 scene graphs
    • H04N21/23412—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs for generating or manipulating the scene composition of objects, e.g. MPEG-4 objects
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    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video 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
    • H04N21/234318—Processing of video elementary streams, e.g. splicing of video 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 by decomposing into objects, e.g. MPEG-4 objects
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    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
    • H04N21/4351—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream involving reassembling additional data, e.g. rebuilding an executable program from recovered modules
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    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
    • H04N21/44012—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving rendering scenes according to scene graphs, e.g. MPEG-4 scene graphs
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    • H04N21/44016—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving splicing one content stream with another content stream, e.g. for substituting a video clip
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    • H04N21/47205—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for manipulating displayed content, e.g. interacting with MPEG-4 objects, editing locally
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    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
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    • H04N5/00—Details of television systems
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    • H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen

Abstract

A head-end centric system and apparatus for encoding and delivery of realtim e and non-realtime content including: a non-realtime content source for providing guide content; a guide encoder (416) for encoding the non-realtime content into encoded non-realtime content; a realtime content source for providing realtime video and audio content; a realtime encoder unit (408) fo r encoding the realtime video and audio content into encoded realtime video an d audio; a remultiplexor for repacketizing the encoded non-realtime content an d the encoded realtime video and audio into transport packets; and a re- timestamp unit coupled to the remultiplexer for providing timestamps to be applied to the transport packets in order to synchronize the realtime and no n- realtime content therein.

Claims (23)

1. A method for encoding a program guide, the method comprising:
encoding a first set of slices for each of a plurality of graphics pages; and encoding a second set of slices for each of a plurality of video streams.
2. The method of claim 1, where the first set of slices are intra-coded.
3. The method of claim 2, where the second set of slices are intra-coded.
4. The method of claim 3, further comprising:
encoding a third set of slices for each of the plurality of video streams, where the third set of slices are predictive-coded.
5. The method of claim 4, further comprising:
encoding a fourth set of slices for each of the plurality of video streams, where the fourth set of slices comprise skipped-coded graphics.
6. The method of claim 3, where encoding the second set of slices is performed once per group of pictures (GOP) for each of the plurality of video streams.
7. The method of claim 4, where encoding the third set of slices is performed multiple times per group of pictures (GOP) for each of the plurality of video streams.
8. The method of claim 5, where encoding the fourth set of slices is performed multiple times per group of pictures (GOP) for each of the plurality of video streams.
9. The method of claim 1, further comprising:.
encoding a plurality of audio streams, each audio stream having a corresponding video stream.
10. The method of claim 5, further comprising:.

forming a packet stream by multiplexing together first, second, third, and fourth sets of packets, where the first set of packets include the first set of slices, the second set of packets include the second set of slices, the third set of packets include the third set of slices, and the fourth set of packets include the fourth set of slices.
11. The method of claim 10, further comprising:.
encoding a plurality of audio streams, each audio stream having a corresponding video stream;
forming an audio packet stream by multiplexing together the plurality of audio streams; and forming a transport stream by multiplexing together the packet stream and the audio packet stream.
12. A bitstream for representing a program guide, the bitstream comprising:
a first set of packets including a set of slices for each of a plurality of graphics pages; and a second set of packets including a set of slices for each of a plurality of video streams.
13. The bitstream of claim 12, where the first set of packets are identifiable by a first set of packet identifiers.
14. The bitstream of claim 13, where the second set of packets are identifiable by a second set of packet identifiers.
15. The bitstream of claim 14, where the first set of packets comprise a set of intra-coded slices for each of the plurality of graphics pages.
16. The bitstream of claim 15, where the second set of packets comprise a set of intra-coded slices for each of the plurality of video streams.
17. The bitstream of claim 16, where the second set of packets further include a second set of slices for each of a plurality of video streams, where the second set of slices are predictive-coded.
18. The bitstream of claim 17, where the second set of packets further include a third set of slices for each of a plurality of video streams, where the third set of slices are skipped-coded.
19. The bitstream of claim 12, further comprising:.
a third set of packets including a plurality of audio streams, each audio stream having a corresponding video stream.
20. The bitstream of claim 12 including multiple full motion video streams which can be retrieved directly with a demultiplexer and decoder from a single tuner at a receiving terminal.
21. The bitstream of claim 12 including multiple full motion video streams which can be played interchangeably from a single tuner.
22. The bitstream of claim 12 including multiple full motion video streams which can be retrieved directly with a demultiplexer and decoder without being accessible to a microprocessor.
23. A method of generating a user interface to be transmitted in a packet stream to terminal units, the method comprising:
creating a first set of packets by encoding a set of slices for each of a plurality of graphics; and creating a second set of packets by encoding a set of slices for each of a plurality of video streams.
CA002388606A 1999-10-27 2000-10-27 Picture-in-picture and multiple video streams using slice-based encoding Expired - Lifetime CA2388606C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2680673A CA2680673C (en) 1999-10-27 2000-10-27 Picture-in-picture and multiple video streams using slice-based encoding

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US09/428,066 US6651252B1 (en) 1999-10-27 1999-10-27 Method and apparatus for transmitting video and graphics in a compressed form
US09/428,066 1999-10-27
US09/454,216 US6481012B1 (en) 1999-10-27 1999-12-09 Picture-in-picture and multiple video streams using slice-based encoding
US09/454,216 1999-12-09
PCT/US2000/029805 WO2001031914A1 (en) 1999-10-27 2000-10-27 Picture-in-picture and multiple video streams using slice-based encoding

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2680673A Division CA2680673C (en) 1999-10-27 2000-10-27 Picture-in-picture and multiple video streams using slice-based encoding

Publications (2)

Publication Number Publication Date
CA2388606A1 true CA2388606A1 (en) 2001-05-03
CA2388606C CA2388606C (en) 2009-12-29

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Family Applications (1)

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CA002388606A Expired - Lifetime CA2388606C (en) 1999-10-27 2000-10-27 Picture-in-picture and multiple video streams using slice-based encoding

Country Status (7)

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US (2) US8032906B2 (en)
EP (1) EP1226713B1 (en)
AT (1) ATE359669T1 (en)
AU (1) AU1576801A (en)
CA (1) CA2388606C (en)
DE (1) DE60034364D1 (en)
WO (1) WO2001031914A1 (en)

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