DE2529386B2 - 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
- DE2529386B2 DE2529386B2 DE19752529386 DE2529386A DE2529386B2 DE 2529386 B2 DE2529386 B2 DE 2529386B2 DE 19752529386 DE19752529386 DE 19752529386 DE 2529386 A DE2529386 A DE 2529386A DE 2529386 B2 DE2529386 B2 DE 2529386B2
- Authority
- DE
- Germany
- Prior art keywords
- data
- remote control
- control signals
- radio transmitter
- additional transmission
- 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.)
- Granted
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 patent claim, as is known from DE-AS 20 51 034
Im Rundfunkbetrieb werden zur Übertragung von Daten, Fernwirksignalen o. ä. in zunehmendem Maße Übertragungskanäle benötigt, die möglichst die gleichen Wege nehmen sollen, wie die Rundfunkmodulation, und die eine sehr hohe Übertragungssicherheit haben müssen. Die Übertragungsgeschwindigkeit ist meist von untergeordneter Bedeutung.In broadcasting operations, remote control signals or the like are increasingly used for the transmission of data Transmission channels required that should take the same path as possible as broadcast modulation, and which must have a very high transmission security. The transmission speed is mostly 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 transmits 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-Trägers auf der Sendeseite
stört hierbei nicht
Zur zusätzlichen Ausnutzung der vorhandenen UKW-Sender für die Ausstrahlung von Verkehrsnachrichten
ist bekannt geworden (DE-AS 20 51 034), für die
Übertragung der Verkehrskennungen Hilfsträgerfrequenzen zu wählen, die das 3. und/oder 4. Vielfache der
19 kHz-Pilotfrequenz und synchron zu dieser sind.In order to be able to demodulate the difference signal again when receiving, there is a 19 kHz pilot tone in the multiplex signal, which is added again to the two sidebands of the difference signal after doubling and corresponding amplification, thus enabling demodulation with a simple envelope rectifier Suppression of the 38 kHz carrier on the transmit side does not interfere with this
For the additional use of the existing VHF transmitter for the transmission of traffic news it has become known (DE-AS 20 51 034) to select subcarrier frequencies for the transmission of the traffic codes that are the 3rd and / or 4th multiple of the 19 kHz pilot frequency and are in sync with this.
lu 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,lu The object of the invention consists in contrast 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,
" Fernschreibsignäle o. ä, übertragen zu können, welche keine Verkehrskennungen sind."Teletype signals or the like to be able to transmit which are not traffic identifiers.
Die Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Patentanspruchs gelöst The object is achieved according to the invention by the characterizing features of the patent claim
in Bei dem erfindungsgemäßen Verfahren wird der an sich unterdrückte 38 kHz-Träger zur Übertragung der erwähnten Informationen, wie z. B. Daten, Fernwirksignale, Fernschreibsignale o. ä. herangezogen. Zu diesem Zweck wird dem Multiplexsignal des FM-Stereo-Rund-In the inventive method in the suppressed to be 38 kHz carrier for transmission of the information mentioned, such as is. B. data, telecontrol signals, teletype signals o. Ä. Used. For this purpose, the multiplex signal of the FM stereo broadcast
2"> funksenders 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 Hilfsträger nicht überschreitet2 "> radio transmitter with the suppressed 38 kHz carrier small amplitude added again, the amplitude of the added 38 kHz carrier only as large it may be made that it does not exceed the prescribed suppression of the auxiliary carrier
«» Desweiteren wird der zugesetzte 38 kHz Frequenz mit den zu übertragenden Signalen in Phasenumkehrmodulation moduliert.«» Furthermore, the added 38 kHz frequency is also included modulated the signals to be transmitted in reverse phase modulation.
Die zuzusetzende 38 kHz-Frequenz wird zweckmäßigerweise aus der im Stereocoder sowieso vorhande- > nen 19 bzw. 38 kHz-Frequenz gewonnen. Sie wird dann z. B. durch Umtasten der Phase — ähnlich wie es bei dem bekannten Tonprüfzeichenverfahren mit einer Frequenz von 15 kHz geschieht — zur Übertragung von Daten, Fernwirk-, Fernschreibsignalen o. ä. verwendet.The 38 kHz frequency to be added is expedient from the 19 or 38 kHz frequency that is already present in the stereo coder. She will then z. B. by keying the phase - similar to the known Tonprüfzeichenverfahren with a Frequency of 15 kHz happens - used for the transmission of data, telecontrol, teletype signals, etc.
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 true DE2529386B2 (en) | 1979-07-26 |
| DE2529386C3 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) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Families Citing this family (2)
| 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 |
-
1975
- 1975-07-02 DE DE19752529386 patent/DE2529386C3/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2529386C3 (en) | 1980-04-03 |
| 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 |