EP0338917A1 - Communication method and device with subcarriers integrated in an analogous or digital signal - Google Patents
Communication method and device with subcarriers integrated in an analogous or digital signal Download PDFInfo
- Publication number
- EP0338917A1 EP0338917A1 EP89401077A EP89401077A EP0338917A1 EP 0338917 A1 EP0338917 A1 EP 0338917A1 EP 89401077 A EP89401077 A EP 89401077A EP 89401077 A EP89401077 A EP 89401077A EP 0338917 A1 EP0338917 A1 EP 0338917A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- digital
- analog
- khz
- filter
- information
- 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.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
- H04H20/33—Arrangements for simultaneous broadcast of plural pieces of information by plural channels
- H04H20/34—Arrangements for simultaneous broadcast of plural pieces of information by plural channels using an out-of-band subcarrier signal
Definitions
- the present invention relates to a communication method and device, by subcarriers integrated into an analog or digital signal.
- Certain communication systems operating by dedicated terrestrial line or by satellite have digital integration inside their original signal used for service signals for the remote control. In general this digital integration is inserted towards the end of the band of the original signal and consequently only admits a single subcarrier, taking into account the bandwidth.
- DBR digital integration
- FM radio Another communication system operating over the air (FM radio) also exists and is known as SCA.
- SCA This system, in general, is integrated after the multiplexed signal of the analog channel, around 60 KHz. This subcarrier makes it possible to obtain an audio channel or digital information.
- the object of the invention is to increase the number of transmissible subcarriers in an analog or digital signal and thus to increase the possibilities of transmission of said analog or digital signal. This goal is achieved for all modes of transmission, whether terrestrial or wireless, thanks to a specific process and device.
- Method according to the invention as regards a modulator of subcarriers in source of emission and a demodulator of subcarriers in reception of the source of emission.
- the digital and analog information to be transmitted on a single analog or digital signal are modulated into subcarriers by the modulator.
- the modulator breaks down the original analog or digital signal into two different or identical frequency bands.
- the modulator modulates two subcarriers for digital information or else a subcarrier in the audio channel in the second frequency band.
- Identical frequency bands if you do not want quality audio support; in this case, the modulator modulates in each frequency band two subcarriers for digital information or else a subcarrier in the audio channel.
- the modulator modulates in each frequency band two subcarriers for digital information or else a subcarrier in the audio channel.
- a subcarrier demodulator Upon reception of said basic analog or digital signal, whether terrestrial or wireless, a subcarrier demodulator reshapes and distributes either two digital pieces of information or one audio channel, or four pieces of digital information or two tracks. Also at reception, the choice between digital information and the audio channels is made by an automatic command switching remote controlled from the transmission source by the subcarrier modulator.
- a central management computer receiving its peripherals: image server, text server, digital advertising audio control, etc. for digital information; Sound control for quality audio support or for at least one audio channel.
- This digital or analog information to be transmitted arrives at a subcarrier modulator comprising: - an 8 KHz filter for sending a quality audio source, bandwidth: 50 HZ ... 8 KHz. - A 4.5 KHz filter for sending an audio bandwidth channel: 50 Hz ... 4.5 KHz. - A subcarrier modulation for the next filter. - A 12 KHz filter for sending digital information. - A mixer mixing the 8 KHz and 12 KHz filters.
- a receiver according to the type of reception desired, for example: a demodem for the reception of a dedicated line, a satellite receiver for the reception of a satellite, a receiver demodulated in frequency for the reception of a hertzian wave frequency modulated, ... - A sub-carrier demodulator output from the receiver and comprising: - An analog signal shaping. - An 8 KHz filter restoring the quality audio support. - A shaping of digital signals. - A 12 KHz filter restoring the digital information. - An amplifier of the preceding filter. - A subcarrier demodulator. - A 4.5 KHz filter with its de-emphasis and restoring the audiophonic channel. Note that the frequencies indicated for the filters are not fixed.
- each digital item of information is connected to a digital addressing.
- This digital addressing sends sixty-four digital information in deferred time and can, if it is coupled to a digital advertising audio system, define the time for the passage of specific audio messages.
- the advantages of the device according to the invention are significant: - The possibility of being able to transport several digital or analog information on a single analog or digital signal, allows the user to considerably increase his communication possibilities. - The addition of digital addressing to the device also allows the user to be able to manage a very large number of messages and thus ensure almost all requests from customers in communication.
- This product exactly meets an important demand of the communication market in audiovisual media: for example : Department store chains, cities, media, etc.
Abstract
Description
La présente invention concerne un procédé et un dispositif de communication, par sous-porteuses intégrées dans un signal analogique ou numérique.The present invention relates to a communication method and device, by subcarriers integrated into an analog or digital signal.
Les systèmes actuels de communication qu'ils soient terrestre (liaison spécialisée Télécom) ou hertzien (radio, satellite), transportent une seule information à l'intérieur de leur signal d'origine.Current communication systems, whether terrestrial (specialized telecom link) or hertzian (radio, satellite), transport only one piece of information inside their original signal.
Certains systèmes de communication fonctionnant par ligne spécialisée terrestre ou par satellite, possèdent à l'intérieur de leur signal d'origine une intégration numérique servant à des signaux de service pour de la télécommande. En général cette intégration numérique est insérée vers la fin de bande du signal d'origine et en conséquence n'admet qu'une seule sous-porteuse, compte tenu de la largeur de bande passante.Un de ces systèmes est connu sous le nom de DBR.Certain communication systems operating by dedicated terrestrial line or by satellite have digital integration inside their original signal used for service signals for the remote control. In general this digital integration is inserted towards the end of the band of the original signal and consequently only admits a single subcarrier, taking into account the bandwidth. One of these systems is known as DBR.
Un autre système de communication fonctionnant lui par voie hertzienne (radio FM) existe également et est connu sous le nom de SCA.
Ce système, en général, est intégré après le signal multiplexé de la voie analogique, aux environs de 60 KHz. Cette sous-porteuse permet d'obtenir une voie audio ou une information numérique.Another communication system operating over the air (FM radio) also exists and is known as SCA.
This system, in general, is integrated after the multiplexed signal of the analog channel, around 60 KHz. This subcarrier makes it possible to obtain an audio channel or digital information.
L'invention a pour but d'augmenter le nombre de sous-porteuses transmissibles dans un signal analogique ou numérique et d'ainsi d'augmenter les possibilités de transmission dudit signal analogique ou numérique.
Ce but est atteint pour tous les modes de transmission qu'ils soient terrestre ou hertzien grâce à un procédé et à un dispositif de mise en oeuvre spécifique.The object of the invention is to increase the number of transmissible subcarriers in an analog or digital signal and thus to increase the possibilities of transmission of said analog or digital signal.
This goal is achieved for all modes of transmission, whether terrestrial or wireless, thanks to a specific process and device.
Procédé selon l'invention en ce qui concerne un modulateur de sous-porteuses en source d'émission et un démodulateur de sous-porteuses en réception de la source d'émission.
Les informations numériques et analogiques à transmettre sur un unique signal analogique ou numérique, sont modulées en sous-porteuses par le modulateur. Pour ce faire, le modulateur décompose le signal analogique ou numérique d'origine en deux bandes de fréquences différentes ou identiques.Method according to the invention as regards a modulator of subcarriers in source of emission and a demodulator of subcarriers in reception of the source of emission.
The digital and analog information to be transmitted on a single analog or digital signal are modulated into subcarriers by the modulator. To do this, the modulator breaks down the original analog or digital signal into two different or identical frequency bands.
Différentes afin d'obtenir une largeur de bande suffisante pour un support audiophonique de qualité dans la première bande de fréquences ; dans ce cas, le modulateur module deux sous-porteuses pour les informations numériques ou bien une sous-porteuse en voie audiophonique dans la deuxième bande de fréquences. Bandes de fréquences identiques si l'on ne désire pas de support audiophonique de qualité ; dans ce cas, le modulateur module dans chaque bande de fréquences deux sous-porteuses pour les informations numériques ou bien une sous-porteuse en voie audiophonique. Ainsi, dans ce cas, l'on obtient sur la transmission d'un signal analogique ou numérique unique, quatre sous-porteuses pour les informations numériques ou bien deux sous-porteuses en voies audiophoniques. En réception dudit signal analogique ou numérique de base, qu'il soit terrestre ou hertzien, un démodulateur de sous-porteuses remet en forme et distribue ou bien deux informations numériques ou une voie audiophonique, ou bien quatre informations numériques ou deux voies audiophoniques.
A la réception également, le choix entre les informations numériques et les voies audiophoniques se fait par une commutation de commande automatique télécommandée depuis la source d'émission par le modulateur de sous-porteuses.Different to obtain sufficient bandwidth for quality audio support in the first frequency band; in this case, the modulator modulates two subcarriers for digital information or else a subcarrier in the audio channel in the second frequency band. Identical frequency bands if you do not want quality audio support; in this case, the modulator modulates in each frequency band two subcarriers for digital information or else a subcarrier in the audio channel. Thus, in this case, one obtains on the transmission of a single analog or digital signal, four subcarriers for digital information or else two subcarriers in audiophonic channels. Upon reception of said basic analog or digital signal, whether terrestrial or wireless, a subcarrier demodulator reshapes and distributes either two digital pieces of information or one audio channel, or four pieces of digital information or two tracks.
Also at reception, the choice between digital information and the audio channels is made by an automatic command switching remote controlled from the transmission source by the subcarrier modulator.
Dispositif pour la mise en oeuvre du procédé selon l'invention comportant : En émission : Un ordinateur central de gestion recevant ses périphériques : serveur image, serveur texte, régie audiophonique publicitaire numérisée,etc... pour les informations numériques ; Une régie son pour un support audiophonique de qualité ou pour au moins une voie audiophonique.
Ces informations numériques ou analogiques à transmettre arrivent à un modulateur de sous-porteuses comportant :
- un filtre à 8 KHz pour l'envoi d'une source audiophonique de qualité, bande passante : 50 HZ...8 KHz.
- Un filtre à 4,5 KHz pour l'envoi d'une voie audiophonique bande passante : 50 Hz...4,5 KHz.
- Une modulation de sous-porteuse pour le filtre suivant.
- Un filtre à 12 KHz pour l'envoi des informations numériques.
- Un mélangeur mixant les filtres de 8 KHz et de 12 KHz.
En réception : Un récepteur selon le type de réception voulue, par exemple : un démodem pour la réception d'une ligne spécialisée, un récepteur satellite pour la réception d'un satellite, un récepteur démodulé en fréquence pour la réception d'une onde hertzienne modulée en fréquence,...
- Un démodulateur de sous-porteuses mis en sortie du récepteur et comportant :
- Une mise en forme du signal analogique.
- Un filtre à 8 KHz restituant le support audiophonique de qualité.
- Une mise en forme des signaux numériques.
- Un filtre à 12 KHz restituant les informations numériques.
- Un amplificateur du filtre précédeur.
- Un démodulateur de sous-porteuse.
- Un filtre à 4,5 KHz avec sa désaccentuation et restituant la voie audiophonique.
A noter que les fréquences indiquées pour les filtres ne sont pas figées.Device for implementing the method according to the invention comprising: In transmission: A central management computer receiving its peripherals: image server, text server, digital advertising audio control, etc. for digital information; Sound control for quality audio support or for at least one audio channel.
This digital or analog information to be transmitted arrives at a subcarrier modulator comprising:
- an 8 KHz filter for sending a quality audio source, bandwidth: 50 HZ ... 8 KHz.
- A 4.5 KHz filter for sending an audio bandwidth channel: 50 Hz ... 4.5 KHz.
- A subcarrier modulation for the next filter.
- A 12 KHz filter for sending digital information.
- A mixer mixing the 8 KHz and 12 KHz filters.
In reception: A receiver according to the type of reception desired, for example: a demodem for the reception of a dedicated line, a satellite receiver for the reception of a satellite, a receiver demodulated in frequency for the reception of a hertzian wave frequency modulated, ...
- A sub-carrier demodulator output from the receiver and comprising:
- An analog signal shaping.
- An 8 KHz filter restoring the quality audio support.
- A shaping of digital signals.
- A 12 KHz filter restoring the digital information.
- An amplifier of the preceding filter.
- A subcarrier demodulator.
- A 4.5 KHz filter with its de-emphasis and restoring the audiophonic channel.
Note that the frequencies indicated for the filters are not fixed.
Selon une réalisation préférentielle de l'invention, chaque information numérique est connectée à un adressage numérique. Cet adressage numérique envoie soixante quatre informations numériques en temps différé et peut, s'il est couplé à une régie audiophonique publicitaire numérisée, définir le temps de passage des messages audiophoniques spécifiques.According to a preferred embodiment of the invention, each digital item of information is connected to a digital addressing. This digital addressing sends sixty-four digital information in deferred time and can, if it is coupled to a digital advertising audio system, define the time for the passage of specific audio messages.
L'invention sera expliquée plus en détail au moyen d'un exemple de réalisation non limitatif décrit ci-après en regard aux dessins annexés dans lesquels :
- - La figure 1 représente schématiquement le modulateur de sous-porteuses en situation.
- - La figure 2 représente schématiquement le démodulateur de sous-porteuses en situation.
En figure 2, la sortie audiophonique analogique ou numérique du récepteur approprié, que ce soit un démodem 1 pour une réception en ligne spécialisée, un
- - Figure 1 schematically shows the subcarrier modulator in situation.
- - Figure 2 shows schematically the demodulator of subcarriers in situation.
In Figure 2, the analog or digital audio output of the appropriate receiver, whether it be a demodem 1 for dedicated online reception, a
Les avantages du dispositif selon l'invention sont importants :
- La possibilité de pouvoir transporter plusieurs informations numériques ou analogiques sur un unique signal analogique ou numérique, permet à l'utilisateur d'augmenter considérablement ses possibilités de communication.
- L'adjonction de l'adressage numérique au dispositif permet également à l'utilisateur de pouvoir gérer un nombre de messages très important et d'assurer ainsi la quasi totalité des demandes de la clientèle en communication.The advantages of the device according to the invention are significant:
- The possibility of being able to transport several digital or analog information on a single analog or digital signal, allows the user to considerably increase his communication possibilities.
- The addition of digital addressing to the device also allows the user to be able to manage a very large number of messages and thus ensure almost all requests from customers in communication.
Ce produit répond exactement à une demande importante du marché de la communication dans les supports audiovisuels :
par exemple :
Chaînes de grands magasins, villes, médias, etc...This product exactly meets an important demand of the communication market in audiovisual media:
for example :
Department store chains, cities, media, etc.
Claims (6)
- soit de deux numériques ou une voie audiophonique
- soit de quatre numériques ou deux voies audiophoniques si l'on ne désire pas de support audiophonique de qualité.2. Method according to claim 1, characterized in that the number of information transmitted and received are:
- either two digital or one audiophonic channel
- either four digital or two audiophonic channels if quality audio support is not desired.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8805334 | 1988-04-22 | ||
FR8805334A FR2630604A1 (en) | 1988-04-22 | 1988-04-22 | METHOD AND APPARATUS FOR COMMUNICATION BY INTEGRATED SUBCARKERS IN AN ANALOG OR DIGITAL SIGNAL |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0338917A1 true EP0338917A1 (en) | 1989-10-25 |
Family
ID=9365557
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89401077A Withdrawn EP0338917A1 (en) | 1988-04-22 | 1989-04-18 | Communication method and device with subcarriers integrated in an analogous or digital signal |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0338917A1 (en) |
AU (1) | AU3539389A (en) |
DE (1) | DE3838727A1 (en) |
FR (1) | FR2630604A1 (en) |
WO (1) | WO1989010662A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0423381A1 (en) * | 1989-10-16 | 1991-04-24 | MPS Media Presse Service GmbH & Co. KG | Apparatus for transmitting audio and/or digital information |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19601161A1 (en) * | 1995-05-27 | 1996-11-28 | Deutsche Telekom Ag | Additional information transmission method esp. for television channels |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2051034A1 (en) * | 1970-10-17 | 1972-06-08 | Hessischer Rundfunk | VHF radio transmission system, especially stereophonic transmission system |
US3922607A (en) * | 1974-08-14 | 1975-11-25 | Drake Co R L | Radio broadcasting system |
US4379947A (en) * | 1979-02-02 | 1983-04-12 | Teleprompter Corporation | System for transmitting data simultaneously with audio |
US4417349A (en) * | 1979-11-08 | 1983-11-22 | Digital Broadcasting Corporation | SCA Data transmission system with a raised cosine filter |
US4449249A (en) * | 1982-09-27 | 1984-05-15 | Price Robert T | Televison programming information system |
GB2146204A (en) * | 1983-09-06 | 1985-04-11 | Mcmartin Ind Inc | FM subsidiary transmission method and system |
EP0172095A1 (en) * | 1984-07-30 | 1986-02-19 | Dimitri Baranoff-Rossine | Method and arrangement for transmitting coded information by radio channel in superposition on a traditional frequency modulation transmission |
US4660193A (en) * | 1983-10-11 | 1987-04-21 | Regency Electronics, Inc. | Digital modulation method for standard broadcast FM subcarrier |
-
1988
- 1988-04-22 FR FR8805334A patent/FR2630604A1/en active Pending
- 1988-11-15 DE DE19883838727 patent/DE3838727A1/en not_active Ceased
-
1989
- 1989-04-18 WO PCT/FR1989/000178 patent/WO1989010662A1/en unknown
- 1989-04-18 EP EP89401077A patent/EP0338917A1/en not_active Withdrawn
- 1989-04-18 AU AU35393/89A patent/AU3539389A/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2051034A1 (en) * | 1970-10-17 | 1972-06-08 | Hessischer Rundfunk | VHF radio transmission system, especially stereophonic transmission system |
US3922607A (en) * | 1974-08-14 | 1975-11-25 | Drake Co R L | Radio broadcasting system |
US4379947A (en) * | 1979-02-02 | 1983-04-12 | Teleprompter Corporation | System for transmitting data simultaneously with audio |
US4417349A (en) * | 1979-11-08 | 1983-11-22 | Digital Broadcasting Corporation | SCA Data transmission system with a raised cosine filter |
US4449249A (en) * | 1982-09-27 | 1984-05-15 | Price Robert T | Televison programming information system |
GB2146204A (en) * | 1983-09-06 | 1985-04-11 | Mcmartin Ind Inc | FM subsidiary transmission method and system |
US4660193A (en) * | 1983-10-11 | 1987-04-21 | Regency Electronics, Inc. | Digital modulation method for standard broadcast FM subcarrier |
EP0172095A1 (en) * | 1984-07-30 | 1986-02-19 | Dimitri Baranoff-Rossine | Method and arrangement for transmitting coded information by radio channel in superposition on a traditional frequency modulation transmission |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0423381A1 (en) * | 1989-10-16 | 1991-04-24 | MPS Media Presse Service GmbH & Co. KG | Apparatus for transmitting audio and/or digital information |
Also Published As
Publication number | Publication date |
---|---|
AU3539389A (en) | 1989-11-24 |
DE3838727A1 (en) | 1989-11-09 |
WO1989010662A1 (en) | 1989-11-02 |
FR2630604A1 (en) | 1989-10-27 |
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