DE3231789A1 - System for transmitting digitised sound broadcast signals - Google Patents

System for transmitting digitised sound broadcast signals

Info

Publication number
DE3231789A1
DE3231789A1 DE19823231789 DE3231789A DE3231789A1 DE 3231789 A1 DE3231789 A1 DE 3231789A1 DE 19823231789 DE19823231789 DE 19823231789 DE 3231789 A DE3231789 A DE 3231789A DE 3231789 A1 DE3231789 A1 DE 3231789A1
Authority
DE
Germany
Prior art keywords
bit
broadcast signals
time slots
frame
stereo
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
Application number
DE19823231789
Other languages
German (de)
Other versions
DE3231789C2 (en
Inventor
Otto 3160 Lehrte Klank
Heinz 3000 Hannover Röbel
Wolfgang Dr.-Ing. 7056 Weinstadt Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsche Thomson oHG
Original Assignee
ANT Nachrichtentechnik GmbH
Licentia Patent Verwaltungs GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ANT Nachrichtentechnik GmbH, Licentia Patent Verwaltungs GmbH filed Critical ANT Nachrichtentechnik GmbH
Priority to DE19823231789 priority Critical patent/DE3231789A1/en
Publication of DE3231789A1 publication Critical patent/DE3231789A1/en
Application granted granted Critical
Publication of DE3231789C2 publication Critical patent/DE3231789C2/de
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/04—Distributors combined with modulators or demodulators
    • H04J3/047—Distributors with transistors or integrated circuits

Abstract

System for transmitting digitised sound broadcast signals in a 1074-bit time division multiplex frame with a data protection of 34,368 Mbit/s corresponding to a tertiary PCM system which allows 32 stereo or 64 mono sound broadcast signals including the parity protection bit and identifier as well as a synchronisation word and two signalling words to be transmitted. <IMAGE>

Description

System zur Übertragung von digitalisierten Tonrundfunk-System for the transmission of digitized audio broadcasting

Signalen Die Erfindung bezieht sich auf ein System zur übertragung von digitalisierten Tonrundfunk-Signalen gemäß Oberbegriff des Patentanspruchs 1. Signals The invention relates to a system for transmission of digitized audio broadcast signals according to the preamble of claim 1.

Nach einem Normungsvorschlag werden Tonrundfunk-Signale mit der Analogbandbreite von 15 kHz mit 14 bit digitalisiert und im Zeitmultiplex mit anderen Tonrundfunk-Signalen verschachtelt mit einer Bitrate von 34,368 Mbit/s nach CCITT-Empfehlung übertragen. Diese Bitrate entspricht derjenigen einer PCM-Tertiärfolge, und es ergibt sich daraus bei einer Abtastfrequenz von 32 kHz eine Rahmenlänge von 1074 bit.According to a standardization proposal, audio broadcasting signals with the analog bandwidth of 15 kHz digitized with 14 bit and in time division multiplex with other audio broadcast signals nested with a bit rate of 34.368 Mbit / s according to the CCITT recommendation. This bit rate corresponds to that of a PCM tertiary sequence, and it results from this at a sampling frequency of 32 kHz a frame length of 1074 bits.

Aufgabe der Erfindung war es, in diesen Rahmen möglichst viele Tonrundfunk-Signale einschließlich einer Kennung und eines Fehlerkorrekturzeichens sowie ein Synchronisationszeichen unterzubringen.The object of the invention was to use as many audio broadcast signals as possible in this context including an identifier and an error correction character as well as a synchronization character accommodate.

Die Lösung erfolgt mit den im Patentanspruch 1 angegebenen Mitteln.The solution takes place with the means specified in claim 1.

Durch das erfindungsgemäße System ist es möglich, daß maximal 32 Stero-Tonrundfunkprogramme oder maximal 64 Mono-Tonrundfunkprogramme oder eine entsprechende Mischung von Stereo- und Mono-Tonrundfunkprogrammen übertragen werden können.The system according to the invention enables a maximum of 32 stereo audio broadcast programs or a maximum of 64 mono audio broadcast programs or a corresponding mix of stereo and monaural audio broadcast programs.

Es folgt nun die nähere Beschreibung anhand der Figur.The following is a more detailed description with reference to the figure.

Die mittlere Zeile der Figur zeigt den Rahmen des erfindungsgemäßen Systems, wobei mehrere Zeitschlitze erkennbar sind.The middle line of the figure shows the scope of the invention System, whereby several time slots can be recognized.

Von links beginnend ist der erste Zeitschlitz vorgesehen für das Synchronisationszeichen SYN, die weiteren Zeitschlitze L1, R1, L2, ... sind vorgesehen für Stereo-Rundfunkkanäle mit abwechslungsweiser Links- und Rechtsinformation. Nach dem 32. Zeitschlitzpaar folgen 2 Zeitschlitze SON, in denen beispielsweise 2 Stereoton-Sonderkanäle übertragen werden können. Jeder Zeitschlitz enthält 16 bit, so daß mit 67 Zeitsohlitzen à 16 bit 1072 bit vorliegen, die zusammen mit den Füll- oder Leerbits nach den beiden SON-Zeichen die geforderte Rahmenlänge von 1074 bit ergeben.Starting from the left, the first time slot is provided for the synchronization symbol SYN, the other time slots L1, R1, L2, ... are intended for stereo broadcast channels with alternating left and right information. After the 32nd time slot pair This is followed by 2 time slots SON in which, for example, 2 special stereo sound channels are transmitted can be. Each time slot contains 16 bits, so that with 67 time slots of 16 bit 1072 bits are present, which together with the filler or empty bits after the two SON characters result in the required frame length of 1074 bits.

Die obere Zeile der Figur zeigt die Bitstruktur insbesondere der Stereo-Rundfunkkanäle. Stellvertretend ist das Zeitschlitzpaar Nr. 10 dargestellt. Im ersten Zeitschlitz dieses Paares wird die Links-Information L und im zweiten Zeitschlitz wird die Rechts-Information R übertragen. Die Information wird durch die Bits Nummer 1 bis 14 getragen, das sich anschließende 15. Bit enthält die Information zur Fehlerverdeckung F, und das 16. bit schließlich enthält die Kennungsinformation K.The top line of the figure shows the bit structure in particular of the stereo broadcast channels. Time slot pair no. 10 is shown as a representative. In the first time slot of this pair the left information becomes L and in the second time slot the right information R transferred. The information is carried by bits number 1 to 14, the the following 15th bit contains the information on error concealment F, and that Finally, the 16th bit contains the identification information K.

In einer optimalen Ausgestaltung der Erfindung wird die Links-/ Rechtsinformation eines Stereotonkanals nicht in 2 benachbarten Zeitschlitzen übertragen, sondern um etwa Rahmendauerhälfte äquidistant versetzt, also z.B. für die Kanäle 1, 2, 3 die Linksinformation in den Zeitschlitzen 2, 3, 4 ... und die Rechtsinformation in den Zeitschlitzen 35, 36, 37 ...In an optimal embodiment of the invention, the left / right information of a stereo sound channel is not transmitted in 2 adjacent time slots, but Equidistantly offset by about half the frame duration, e.g. for channels 1, 2, 3 the left information in time slots 2, 3, 4 ... and the right information in time slots 35, 36, 37 ...

(untere Zeile der Figur). Dies hat den Vorteil einer unaufwendigen Empfängerschaltung bei den Teilnehmern, wobei lediglich 1 Digital/Analog-Wandler benötigt wird.(lower line of the figure). This has the advantage of being inexpensive Receiver circuit at the participants, with only 1 digital / analog converter is needed.

LeerseiteBlank page

Claims (4)

Patentansprüche 2$ System zur Übertragung von digitalisierten Tonrundfunk-Signalen in einem 1074 bit umfassenden Zeitmultiplex-Rahmen (Rahmen) mit einem Datenfluß von 34,368 Mbit/s, dadurch gekennzeichnet, daß der Rahmen aus 66 Zeitschlitzen und einem Synchronisationswort (SYN) zu je 16 bit sowie 2 Füllbits besteht.Claims 2 $ system for the transmission of digitized audio broadcast signals in a 1074 bit time division multiplex frame (frame) with a data flow of 34.368 Mbit / s, characterized in that the frame consists of 66 time slots and a synchronization word (SYN) of 16 bits each and 2 filler bits. 2. System nach Anspruch 1, dadurch gekennzeichnet, daß das Synchronisationswort (SYN) am Rahmenanfang steht, daß anschließend die 66 Zeitschlitze und am Ende die 2 Füllbits folgen.2. System according to claim 1, characterized in that the synchronization word (SYN) is at the start of the frame that the 66 time slots are then followed and the 2 fill bits follow. 3. System nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die ersten 64 Zeitschlitze jeweils 14 bit Information, 1 Paritätsbit zum Schutz bzw. zur Fehlerkorrektur/ Fehlerverdeckung der Information und 1 Kennungsbit in dieser Reihenfolge enthalten.3. System according to claim 1 or 2, characterized in that the first 64 time slots each 14 bit information, 1 parity bit for protection or for error correction / error concealment of the information and 1 identifier bit in this Order included. 4. System nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in den ersten 64 Zeitschlitzen 32 Stereo-, 64 Mono- oder gemischt Stereo- und Mono-Tonrund funksignale übertragen werden.4. System according to one of the preceding claims, characterized in that that in the first 64 time slots 32 stereo, 64 mono or mixed stereo and Mono sound and radio signals are transmitted.
DE19823231789 1982-08-26 1982-08-26 System for transmitting digitised sound broadcast signals Granted DE3231789A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19823231789 DE3231789A1 (en) 1982-08-26 1982-08-26 System for transmitting digitised sound broadcast signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823231789 DE3231789A1 (en) 1982-08-26 1982-08-26 System for transmitting digitised sound broadcast signals

Publications (2)

Publication Number Publication Date
DE3231789A1 true DE3231789A1 (en) 1984-03-15
DE3231789C2 DE3231789C2 (en) 1990-10-25

Family

ID=6171771

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19823231789 Granted DE3231789A1 (en) 1982-08-26 1982-08-26 System for transmitting digitised sound broadcast signals

Country Status (1)

Country Link
DE (1) DE3231789A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3327524A1 (en) * 1983-07-30 1985-02-07 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover System for transmitting digitised sound broadcasting signals

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2814351A1 (en) * 1978-04-03 1979-10-11 Siemens Ag Frame structure for third order digital TDM system - with every 1056 signal bits preceded by 18 additional bits to combine 120 speech channels into rapid linear data flow
DE3146466A1 (en) * 1981-11-24 1983-09-01 AEG-Telefunken Nachrichtentechnik GmbH, 7150 Backnang Method for trunking sound broadcast signals

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2814351A1 (en) * 1978-04-03 1979-10-11 Siemens Ag Frame structure for third order digital TDM system - with every 1056 signal bits preceded by 18 additional bits to combine 120 speech channels into rapid linear data flow
DE3146466A1 (en) * 1981-11-24 1983-09-01 AEG-Telefunken Nachrichtentechnik GmbH, 7150 Backnang Method for trunking sound broadcast signals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3327524A1 (en) * 1983-07-30 1985-02-07 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover System for transmitting digitised sound broadcasting signals

Also Published As

Publication number Publication date
DE3231789C2 (en) 1990-10-25

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Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee
8180 Miscellaneous part 1

Free format text: IN HEFT 32/85,SEITE 6721, SP. 3: DIE VEROEFFENTLICHUNG IST ZU STREICHEN

8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: TELEFUNKEN FERNSEH UND RUNDFUNK GMBH, 3000 HANNOVE

8327 Change in the person/name/address of the patent owner

Owner name: THOMSON CONSUMER ELECTRONICS SALES GMBH, 30453 HAN

8339 Ceased/non-payment of the annual fee