PT1049283E - Transmissao com multirresolucao com sinais de portadoras multiplas - Google Patents
Transmissao com multirresolucao com sinais de portadoras multiplasInfo
- Publication number
- PT1049283E PT1049283E PT00114693T PT00114693T PT1049283E PT 1049283 E PT1049283 E PT 1049283E PT 00114693 T PT00114693 T PT 00114693T PT 00114693 T PT00114693 T PT 00114693T PT 1049283 E PT1049283 E PT 1049283E
- Authority
- PT
- Portugal
- Prior art keywords
- signal
- data
- divided
- frequency band
- low
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title abstract 2
- 238000010586 diagram Methods 0.000 abstract 2
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/36—Modulator circuits; Transmitter circuits
- H04L27/362—Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated
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- H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
- H03M13/23—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using convolutional codes, e.g. unit memory codes
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- H03M13/25—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM]
- H03M13/253—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM] with concatenated codes
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- H03M13/2933—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes using a block and a convolutional code
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- H04N21/631—Multimode Transmission, e.g. transmitting basic layers and enhancement layers of the content over different transmission paths or transmitting with different error corrections, different keys or with different transmission protocols
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- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/455—Demodulation-circuits
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- H—ELECTRICITY
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- H04N7/00—Television systems
- H04N7/24—Systems for the transmission of television signals using pulse code modulation
-
- H—ELECTRICITY
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- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
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- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
- H04L2027/0036—Correction of carrier offset using a recovered symbol clock
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0044—Control loops for carrier regulation
- H04L2027/0053—Closed loops
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0044—Control loops for carrier regulation
- H04L2027/0063—Elements of loops
- H04L2027/0067—Phase error detectors
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- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
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- H—ELECTRICITY
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- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- 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 or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440263—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the spatial resolution, e.g. for displaying on a connected PDA
- H04N21/440272—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the spatial resolution, e.g. for displaying on a connected PDA for performing aspect ratio conversion
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- H—ELECTRICITY
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- H04N7/015—High-definition television systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Probability & Statistics with Applications (AREA)
- Databases & Information Systems (AREA)
- Artificial Intelligence (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Television Systems (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Error Detection And Correction (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Color Television Systems (AREA)
- Radar Systems Or Details Thereof (AREA)
- Time-Division Multiplex Systems (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Digital Magnetic Recording (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Television Signal Processing For Recording (AREA)
- Eye Examination Apparatus (AREA)
- Radio Transmission System (AREA)
- Circuits Of Receivers In General (AREA)
- Amplitude Modulation (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP6793492 | 1992-03-26 | ||
JP25607092 | 1992-09-25 |
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PT1049283E true PT1049283E (pt) | 2002-08-30 |
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PT93302369T PT562875E (pt) | 1992-03-26 | 1993-03-26 | Sistema qam de multirresolucao |
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PT00114701T PT1039681E (pt) | 1992-03-26 | 1993-03-26 | Transmissao com multirresolucao e codificacao de correccao de erros com snais de portadoras multiplas |
PT00114689T PT1039673E (pt) | 1992-03-26 | 1993-03-26 | Transmissao com multirresolucao e codificacao de correccao de erros com sinais de portadoras multiplas |
PT03009287T PT1330092E (pt) | 1992-03-26 | 1993-03-26 | Transmissão com resolução múltipla |
PT03009288T PT1330093E (pt) | 1992-03-26 | 1993-03-26 | Transmissão com resolução múltipla |
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PT01118510T PT1154608E (pt) | 1992-03-26 | 1993-03-26 | Receptor com resolução múltipla |
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JP (15) | JP3109552B2 (pt) |
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CN (1) | CN1032099C (pt) |
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AU (1) | AU655539B2 (pt) |
CA (4) | CA2226489C (pt) |
DE (19) | DE69331669T2 (pt) |
DK (20) | DK1330088T3 (pt) |
ES (20) | ES2173842T3 (pt) |
PT (20) | PT1045541E (pt) |
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1998
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2001
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2002
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2003
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