ES2100903T3 - Aparato de television con procesamiento de señales de teletexto. - Google Patents
Aparato de television con procesamiento de señales de teletexto.Info
- Publication number
- ES2100903T3 ES2100903T3 ES91109325T ES91109325T ES2100903T3 ES 2100903 T3 ES2100903 T3 ES 2100903T3 ES 91109325 T ES91109325 T ES 91109325T ES 91109325 T ES91109325 T ES 91109325T ES 2100903 T3 ES2100903 T3 ES 2100903T3
- Authority
- ES
- Spain
- Prior art keywords
- teletext
- signal
- teletext signal
- clock
- signal processing
- 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.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/025—Systems for the transmission of digital non-picture data, e.g. of text during the active part of a television frame
- H04N7/035—Circuits for the digital non-picture data signal, e.g. for slicing of the data signal, for regeneration of the data-clock signal, for error detection or correction of the data signal
- H04N7/0352—Circuits for the digital non-picture data signal, e.g. for slicing of the data signal, for regeneration of the data-clock signal, for error detection or correction of the data signal for regeneration of the clock signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
- H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
- H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
- H04N7/0882—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of character code signals, e.g. for teletext
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Systems (AREA)
Abstract
UNA SEÑAL DE TELETEXTO DIGITAL ES TRANSMITIDA DURANTE PARTE DE UN PERIODO DE RESPALDO VERTICAL DE UNA SEÑAL TELEVISIVA. UN OSCILADOR DE RELOJ SINCRONIZADO POR LA SEÑAL DE TELETEXTO ESTA ACOPLADO AL IMPUT DE SINCRONIZACION DE UN CIRCUITO LOGICO SUMINISTRANDO SEÑALES DE RELOJ Y DE DATOS PARA EL PROCESAMIENTO DEL TELETEXTO. PARA EVITAR QUE LOS ARMONICOS ALTOS SEAN INCLUIDOS EN LAS SEÑALES DE RELOJ Y DATOS Y QUE PRODUZCAN INTERFERENCIAS DENTRO DE LA IMAGEN REPRODUCIDA, SE REDUCE LA AMPLITUD DE LA SEÑAL DE SALIDA DEL OSCILADOR DE RELOJ, DURANTE LA TRAZA VERTICAL, CUANDO LA SEÑAL DEL TELETEXTO NO SE TRASMITE, CON OBJETO DE EVITAR LAS OPERACIONES DE CONMUTACION EN EL CIRCUITO LOGICO.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB909013434A GB9013434D0 (en) | 1990-06-15 | 1990-06-15 | Television device with processing of teletext signals |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2100903T3 true ES2100903T3 (es) | 1997-07-01 |
Family
ID=10677708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES91109325T Expired - Lifetime ES2100903T3 (es) | 1990-06-15 | 1991-06-07 | Aparato de television con procesamiento de señales de teletexto. |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0461551B1 (es) |
JP (1) | JPH05122665A (es) |
KR (1) | KR0178398B1 (es) |
AT (1) | ATE149771T1 (es) |
DE (1) | DE69124845T2 (es) |
ES (1) | ES2100903T3 (es) |
GB (2) | GB9013434D0 (es) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4202012A (en) * | 1977-03-15 | 1980-05-06 | Matsushita Electric Industrial Co., Ltd. | Sampling clock reproducing device |
FR2496376B1 (fr) * | 1980-12-11 | 1985-06-28 | Signalisation Continental | Procede et systeme de teletexte pour l'affichage de donnees sur l'ecran d'un recepteur de television |
JPS598485A (ja) * | 1982-07-05 | 1984-01-17 | Matsushita Electric Ind Co Ltd | 文字多重放送受信機 |
US4638358A (en) * | 1982-07-19 | 1987-01-20 | Matsushita Electric Industrial Co., Ltd. | Sampling clock reproducing circuit |
DE3242517A1 (de) * | 1982-11-18 | 1984-05-24 | Robert Bosch Gmbh, 7000 Stuttgart | Zaehlvorrichtung fuer fernsehanlagen |
US4620227A (en) * | 1984-01-30 | 1986-10-28 | Cybernetic Data Products | Data decoder |
FR2608873B1 (fr) * | 1986-12-23 | 1989-03-24 | Radiotechnique Compelec | Dispositif de reception de donnees numeriques comportant un circuit de reconnaissance de debut de paquet |
-
1990
- 1990-06-15 GB GB909013434A patent/GB9013434D0/en active Pending
-
1991
- 1991-06-07 ES ES91109325T patent/ES2100903T3/es not_active Expired - Lifetime
- 1991-06-07 DE DE69124845T patent/DE69124845T2/de not_active Expired - Fee Related
- 1991-06-07 EP EP91109325A patent/EP0461551B1/en not_active Expired - Lifetime
- 1991-06-07 AT AT91109325T patent/ATE149771T1/de not_active IP Right Cessation
- 1991-06-07 GB GB9112462A patent/GB2245464A/en not_active Withdrawn
- 1991-06-14 KR KR1019910009783A patent/KR0178398B1/ko not_active IP Right Cessation
- 1991-06-14 JP JP3142889A patent/JPH05122665A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
GB9013434D0 (en) | 1990-08-08 |
KR920001959A (ko) | 1992-01-30 |
GB9112462D0 (en) | 1991-07-31 |
EP0461551A3 (en) | 1993-03-17 |
JPH05122665A (ja) | 1993-05-18 |
ATE149771T1 (de) | 1997-03-15 |
DE69124845T2 (de) | 1997-09-18 |
GB2245464A (en) | 1992-01-02 |
EP0461551B1 (en) | 1997-03-05 |
KR0178398B1 (ko) | 1999-05-01 |
EP0461551A2 (en) | 1991-12-18 |
DE69124845D1 (de) | 1997-04-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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