MX9305537A - CODIFICADOR DE SEñAL DE TELEVISION DIGITAL QAM MULTIPLE. - Google Patents
CODIFICADOR DE SEñAL DE TELEVISION DIGITAL QAM MULTIPLE.Info
- Publication number
- MX9305537A MX9305537A MX9305537A MX9305537A MX9305537A MX 9305537 A MX9305537 A MX 9305537A MX 9305537 A MX9305537 A MX 9305537A MX 9305537 A MX9305537 A MX 9305537A MX 9305537 A MX9305537 A MX 9305537A
- Authority
- MX
- Mexico
- Prior art keywords
- qam
- priority
- television signal
- normal
- signal encoder
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/015—High-definition television systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- 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
- H04L27/3488—Multiresolution systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- 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
- H04N19/37—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability with arrangements for assigning different transmission priorities to video input data or to video coded data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Television Systems (AREA)
- Color Television Systems (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
En un codificador de señal de televisión de alta definición, los datos digitales de alta prioridad (5) y de prioridad normal (11), son separados (16,18) a componentes de cuadratura I y Q, se forman espectralmente mediante división de tiempo (32,34), para producir señales moduladas en amplitud, de cuadratura, respectivas, del tipo 32-QAM. La señal QAM de alta prioridad y la señal QAM de prioridad normal exhiben diferentes anchuras de banda y frecuencias de portadora. Las señales QAM de alta prioridad y de prioridad normal se combinan (40) en forma digital 32-QAM doble, con prioridades, antes de ser transportada a un solo convertidor de digital a analógico (50) y al conmutador de las redes (52,55) de transmisión de radio frecuencias analógicas.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB929219185A GB9219185D0 (en) | 1992-09-10 | 1992-09-10 | A single digital modem encoder to generate a twin qam signal for advanced digital television (adtv) |
US07/991,625 US5313279A (en) | 1992-09-10 | 1992-12-16 | Digital carrier combining apparatus in a multiple QAM digital television signal receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
MX9305537A true MX9305537A (es) | 1994-07-29 |
Family
ID=26301593
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX9305537A MX9305537A (es) | 1992-09-10 | 1993-09-09 | CODIFICADOR DE SEñAL DE TELEVISION DIGITAL QAM MULTIPLE. |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0588542B1 (es) |
JP (1) | JP3614451B2 (es) |
CN (1) | CN1048134C (es) |
DE (1) | DE69323944T2 (es) |
MX (1) | MX9305537A (es) |
SG (1) | SG95572A1 (es) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0775099A (ja) * | 1993-05-07 | 1995-03-17 | Philips Electron Nv | マルチプレックス直交振幅変調テレビジョン送信用送信方式、送信機及び受信機 |
US6456607B2 (en) * | 1996-10-16 | 2002-09-24 | Canon Kabushiki Kaisha | Apparatus and method for transmitting an image signal modulated with a spreading code |
US5900915A (en) * | 1997-03-18 | 1999-05-04 | Thomson Consumer Electronics, Inc. | HD to SD guide converter for electronic television schedule system |
DE19962760A1 (de) * | 1999-12-23 | 2001-06-28 | Rohde & Schwarz | Anordnung zum Erzeugen eines analogen I/Q-Signals aus zwei oder mehreren Datenströmen |
KR100454483B1 (ko) | 2002-03-04 | 2004-10-28 | 삼성전자주식회사 | 아이/큐 복조장치 및 그의 아이/큐 신호생성방법 |
CN103179079B (zh) * | 2011-12-21 | 2017-08-25 | 北京普源精电科技有限公司 | 正交幅度调制信号的产生方法、装置和数字信号发生器 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5134464A (en) * | 1990-11-16 | 1992-07-28 | North American Philips Corporation | Method and apparatus for the transmission and reception of a multicarrier digital television signal |
US5287180A (en) * | 1991-02-04 | 1994-02-15 | General Electric Company | Modulator/demodulater for compatible high definition television system |
US5111292A (en) * | 1991-02-27 | 1992-05-05 | General Electric Company | Priority selection apparatus as for a video signal processor |
-
1993
- 1993-09-06 EP EP93307017A patent/EP0588542B1/en not_active Expired - Lifetime
- 1993-09-06 SG SG9602410A patent/SG95572A1/en unknown
- 1993-09-06 DE DE69323944T patent/DE69323944T2/de not_active Expired - Lifetime
- 1993-09-09 MX MX9305537A patent/MX9305537A/es not_active IP Right Cessation
- 1993-09-09 JP JP24993493A patent/JP3614451B2/ja not_active Expired - Fee Related
- 1993-09-09 CN CN93117669A patent/CN1048134C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69323944D1 (de) | 1999-04-22 |
CN1090114A (zh) | 1994-07-27 |
DE69323944T2 (de) | 1999-07-29 |
CN1048134C (zh) | 2000-01-05 |
EP0588542A2 (en) | 1994-03-23 |
EP0588542A3 (en) | 1994-11-30 |
JPH06225342A (ja) | 1994-08-12 |
JP3614451B2 (ja) | 2005-01-26 |
SG95572A1 (en) | 2003-04-23 |
EP0588542B1 (en) | 1999-03-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG | Grant or registration | ||
MM | Annulment or lapse due to non-payment of fees |