DE2529386C3 - Method for the additional transmission of data, remote control signals, etc. via an FM stereo radio transmitter - Google Patents
Method for the additional transmission of data, remote control signals, etc. via an FM stereo radio transmitterInfo
- Publication number
- DE2529386C3 DE2529386C3 DE19752529386 DE2529386A DE2529386C3 DE 2529386 C3 DE2529386 C3 DE 2529386C3 DE 19752529386 DE19752529386 DE 19752529386 DE 2529386 A DE2529386 A DE 2529386A DE 2529386 C3 DE2529386 C3 DE 2529386C3
- Authority
- DE
- Germany
- Prior art keywords
- data
- remote control
- radio transmitter
- control signals
- khz
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
- H04H60/13—Arrangements for device control affected by the broadcast information
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Stereo-Broadcasting Methods (AREA)
Description
Die Erfindung bezieht sich auf ein Verfahren gemäß dem Oberbegriff des Patentanspruchs, wie es aus der DE-AS 20 51 034 bekannt istThe invention relates to a method according to the preamble of the claim, as it is from DE-AS 20 51 034 is known
Im Rundfunkbetrieb werden zur Übertragung von Daten, Fernwirksignalen o.a. in zunehmendem Maße Gbertraguugskanäle benötigt, die möglichst die gleichen Wege nehmen sollen, wie die Rundfunkmodulation, und die eine oehr hohe Übertragungssicherheit haben müssen. Die Übertragungsgeschwindigkeit ist meist von untergeordneter Bedeutung.In broadcasting operations, remote control signals, etc., are increasingly being used for the transmission of data Transmission channels required that are as similar as possible Should take paths, such as radio modulation, and which have a very high transmission reliability need to have. The transmission speed is usually of minor importance.
Bekanntlich wird bei dem sogenannten Pilottonverfahren (DE-AS 12 83 931) zur Modulation eines FM-Stereo-Senders das Summensignal im Frequenzbereich von etwa 40—15 000Hz übertragen. Das Differenzsignal moduliert einen 38 kHz-Träger, dessen beide Seitenbänder von 23 bis 53 kHz reichen. Dieser Träger wird vor der Aussendung unterdrückt, nach den derzeitigen Normen um 36 dB.It is known that the so-called pilot tone method (DE-AS 12 83 931) is used to modulate a FM stereo transmitter transmit the sum signal in the frequency range of about 40-15,000 Hz. The difference signal modulates a 38 kHz carrier with both sidebands ranging from 23 to 53 kHz. This carrier is suppressed before transmission, according to current standards by 36 dB.
Um beim Empfang das Differenzsignal wieder demodulieren zu können, befindet sich in dem Multiplex-Signal ein 19 kHz-Pilotton, der nach Verdopplung und entsprechender Verstärkung den beiden Seitenbändern des Differenzsignals wieder zugesetzt wird und so die Demodulation mit einem einfachen Hüllkurven-Gleichrichter ermöglicht Die unvollständige Unterdrückung des 38 kHz-Trä|>ers auf der Sendeseite stört hierbei nichtIn order to be able to demodulate the difference signal again when receiving, the Multiplex signal a 19 kHz pilot tone, which after doubling and corresponding amplification, the two Sidebands of the difference signal is added again and so the demodulation with a simple Envelope rectifier enables the incomplete suppression of the 38 kHz carrier on the transmission side does not bother here
Zur zusätzlichen Ausnutzung der vorhandenen UKW-Sender für die Ausstrahlung von Verkehrsnachrichten ist bekannt geworden (DE-AS 20 51 034), für die Übertragung der Verkehrskennunjjen Hilfsträgerfrequenzen zu wählen, die das 3. und/oder 4. Vielfache der 19 kHz-Pilotfrequenz und synchron «u dieser sindFor additional use of the existing VHF transmitters for broadcasting traffic news has become known (DE-AS 20 51 034), for the transmission of Verkehrskennunjjen subcarrier frequencies to be selected that are the 3rd and / or 4th multiple of the 19 kHz pilot frequency and synchronous with this
ίο Die Aufgabe der Erfindung besteht demgegenüber darin, bei einem Verfahren der eingangs erwähnten Art ohne die 3. und/oder 4. Vielfachen der Pilotfrequenz auszukommen, um so auch mit Hilfe von Verkehrsfunksendern Informationen wie z. B. Daten, Fernwirksignale,The object of the invention is on the other hand therein, in a method of the type mentioned at the outset, without the 3rd and / or 4th multiples of the pilot frequency get along, so also with the help of traffic radio stations information such. B. data, remote control signals,
is Fernschreibsignale o. ä^ übertragen zu können, welche keine Verkehrskennungen sind.is to be able to transmit teletype signals or the like, which are not traffic identifiers.
Die Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Patentanspi üchs gelöst The object is achieved according to the invention by characterizing features of the patent claim solved
Bei dem erfindungsgemäßen Verfahren wird der an sich unterdrückte 3S kHz-Träger zur Übertra^n1* der erwähnten Informationen, wie z. B. Daten, Fernwirksignale, Fernschreibsignale o. ä. herangezogen. Zu diesem Zweck wird dem Multiplexsignal des FM-Stereo-Rundfunksenders der unterdrückte 38 kHz-Träger mit kleiner Amplitude wieder zugesetzt, wobei die Amplitude des zugesetzten 38 kHz-Trägers nur so groß gemacht werden darf, daß sie die vorgeschriebene Unterdrückung des Hilfsträgers nicht überschreitet Desweiteren wird der zugesetzte 38 kHz-Frequenz mit den zu übertragenden Signalen in Phasenumkehrmodulation moduliertIn the inventive method the suppressed se 3S kHz carrier to Übertra ^ n 1 * of said information such. B. data, telecontrol signals, teletype signals o. Ä. Used. For this purpose, the suppressed 38 kHz carrier with a small amplitude is added again to the multiplex signal of the FM stereo radio transmitter, whereby the amplitude of the added 38 kHz carrier may only be made so large that it does not exceed the prescribed suppression of the subcarrier the added 38 kHz frequency is modulated with the signals to be transmitted in reverse phase modulation
Die zuzusetzende 38 kHz-Frequenz wird zweckmäßigerweise aus der im Stcreocoder sowieso vorhande-The 38 kHz frequency to be added is expediently taken from the already existing in the Stcreocoder.
J5 nen 19 bzw. 38 kHz-Frequenz gewonnen. Sie wird dann z. B. durch Umtosten der Phase — ähnlich wie es bei dem bekannten Tonprüfzeichenverfahren mit einer Frequenz von 15 kHz geschieht — zur Übertragung von Daten, Fernwirk-, Fernschreibsignalen o. ä. verwendetJ5 won 19 or 38 kHz frequency. She will then z. B. by Umtosten the phase - similar to the known Tonprüfzeichenverfahren with a Frequency of 15 kHz happens - for the transmission of Data, telecontrol, teletype signals or the like are used
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752529386 DE2529386C3 (en) | 1975-07-02 | 1975-07-02 | Method for the additional transmission of data, remote control signals, etc. via an FM stereo radio transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752529386 DE2529386C3 (en) | 1975-07-02 | 1975-07-02 | Method for the additional transmission of data, remote control signals, etc. via an FM stereo radio transmitter |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2529386A1 DE2529386A1 (en) | 1977-01-20 |
| DE2529386B2 DE2529386B2 (en) | 1979-07-26 |
| DE2529386C3 true DE2529386C3 (en) | 1980-04-03 |
Family
ID=5950415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19752529386 Expired DE2529386C3 (en) | 1975-07-02 | 1975-07-02 | Method for the additional transmission of data, remote control signals, etc. via an FM stereo radio transmitter |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2529386C3 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH645489A5 (en) * | 1979-02-08 | 1984-09-28 | Bbc Brown Boveri & Cie | METHOD AND CIRCUIT ARRANGEMENT FOR CHARACTER TRANSFER BY MEANS OF AMPLITUDE-MODULATED BROADCASTING DEVICES. |
| GB8120186D0 (en) * | 1981-06-30 | 1998-06-03 | Secr Defence | Improvements in or relating to radio frequency communications |
| DE3530546A1 (en) * | 1985-08-27 | 1987-03-19 | Ant Nachrichtentech | Transmission method for a fast and a slow data stream |
| DE3634752A1 (en) * | 1986-10-11 | 1988-04-21 | Thomson Brandt Gmbh | BROADCAST RECEIVER |
| DE4008023A1 (en) * | 1990-03-09 | 1991-09-12 | Krone Ag | METHOD FOR IN-HOUSE VOICE AND DATA COMMUNICATION VIA THE IN-HOUSE POWER SUPPLY NETWORK |
-
1975
- 1975-07-02 DE DE19752529386 patent/DE2529386C3/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2529386B2 (en) | 1979-07-26 |
| DE2529386A1 (en) | 1977-01-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OD | Request for examination | ||
| C3 | Grant after two publication steps (3rd publication) | ||
| EGA | New person/name/address of the applicant | ||
| EF | Willingness to grant licences | ||
| 8339 | Ceased/non-payment of the annual fee |