DE1238079B - Device for the digital synchronization of the reception distributor of a time division multiplex transmission system - Google Patents
Device for the digital synchronization of the reception distributor of a time division multiplex transmission systemInfo
- Publication number
- DE1238079B DE1238079B DE1964T0026154 DET0026154A DE1238079B DE 1238079 B DE1238079 B DE 1238079B DE 1964T0026154 DE1964T0026154 DE 1964T0026154 DE T0026154 A DET0026154 A DE T0026154A DE 1238079 B DE1238079 B DE 1238079B
- Authority
- DE
- Germany
- Prior art keywords
- synchronization
- clock counter
- pulse
- shift register
- clock
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/04—Speed or phase control by synchronisation signals
- H04L7/08—Speed or phase control by synchronisation signals the synchronisation signals recurring cyclically
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Time-Division Multiplex Systems (AREA)
Description
DEUTSCHES GERMAN 'MTTWt 'MTTWt PATENTAMTPATENT OFFICE
AUSLEGESCHRIFTEDITORIAL
DeutscheKl.: 21a4-49German class: 21a4-49
Nummer: 1 238 079Number: 1 238 079
Aktenzeichen: T 26154 IX d/21 a4File number: T 26154 IX d / 21 a4
1 238 079 Anmeldetag: 8.Mai 19641 238 079 filing date: May 8, 1964
Auslegetag: 6. April 1967Opened on: April 6, 1967
Das Hauptpatent betrifft eine Einrichtung zur digitalen Synchronisierung des Empfangsverteilers eines Zeitmultiplex-Übertragungssystems mit Hilfe von Synchronisiersignalen, bei dem der Empfangsverteiler eine umlaufende Impulszählkette enthält, von deren aufeinanderfolgenden Zählstufen mindestens eine für die Aufnahme der Synchronisierzeichen vorgesehen ist, wobei der Inhalt der für die Aufnahme der Synchronisierzeichen vorgesehenen Zählstufen mittels einer Verknüpfungsschaltung mit einem Steuersignal verglichen wird und die dabei als richtig erkannten Zeichen in einer besonderen Synchronisierzählkette fortlaufend gezählt werden, während bei in der Erwartungszeit ausbleibender Synchronisierzeichen die Zählkette jeweils um eine oder mehrere Zähleinheiten zurückgestellt wird, und das Erreichen der Endstellung der Zählkette für die Herbeiführung der Betriebsbereitschaft des Empfängers ausgewertet wird.The main patent relates to a device for digitally synchronizing the reception distributor of a Time division multiplex transmission system with the help of synchronization signals, in which the receive distributor contains a revolving pulse counting chain, of the successive counting stages at least one is provided for recording the synchronization characters, the content of which is for recording of the synchronization characters provided by means of a logic circuit with a Control signal is compared and the characters recognized as correct in a special synchronization counting chain are counted continuously, while there are no synchronization characters in the waiting time the counting chain is set back by one or more counting units, and the achievement the end position of the counting chain is evaluated to bring about the operational readiness of the receiver will.
Aufgabe der Erfindung ist, die Einrichtung nach dem Hauptpatent so zu ergänzen, daß die durch den Übertragungskanal verzerrten, impulsförmigen Signale auf der Empfangsseite formgetreu, frequenz- und phasenrichtig regeneriert werden.The object of the invention is to supplement the device according to the main patent so that the through the Transmission channel distorted, pulse-shaped signals on the receiving side true to shape, frequency- and regenerated in the correct phase.
In einer bekannten Anordnung werden die durch die Leitung verzerrt empfangenen Impulse durch einen Impulsgenerator, der an einen mit dem Impulsgenerator des Senders zu synyhronisierenden örtlichen Impulsgenerator angeschlossen ist, durch örtlich erzeugte Impulse ersetzt. Bei dieser Anordnung muß, ebenso wie bei anderen für die Regenerierung von Impulsen verwendeten Einrichtungen, empfangsseitig ein mit dem Impulsgenerator der Sendeseite synchronisierter Impulsgenerator vorhanden sein.In a known arrangement, the pulses received through the line are distorted a pulse generator which is connected to a local to be synchronized with the pulse generator of the transmitter Pulse generator is connected, replaced by locally generated pulses. With this arrangement must, as with other devices used for the regeneration of pulses, on the receiving side a pulse generator synchronized with the pulse generator on the transmitting side is available be.
Die Erfindung vermeidet diesen Nachteil. Sie ist dadurch gekennzeichnet, daß die Synchronisiersignale für den Kanalverteiler der Empfangsseite ebenso wie die übrigen durch den Ubertragungskanal einlaufenden impulsförmigen Informationen zur Steuerung einer spannungsempfindlichen Kippstufe, vorzugsweise eines Schmitt-Triggers, dienen, der einen Taktzähler anstößt, welcher mit dem Takt eines Impulsgenerators der Empfangsseite neue Impulse erzeugt, die in ein Schieberegister eingeschrieben werden.The invention avoids this disadvantage. It is characterized in that the synchronization signals for the channel distributor on the receiving side as well as the other incoming through the transmission channel pulse-shaped information for controlling a voltage-sensitive trigger stage, preferably a Schmitt trigger, which triggers a clock counter, which with the clock of a pulse generator the receiving side generates new pulses that are written into a shift register.
Die Erfindung wird an Hand eines in der Zeichnung als Blockschaltbild dargestellten Ausführungsbeispieles näher erläutert. The invention is explained in more detail with reference to an embodiment shown in the drawing as a block diagram.
Die impulsförmigen Informationen gelangen in beliebiger Phasenlage und durch den Übertragungskanal verzerrt an den Eingang E der Anordnung, wo
sie zur Steuerung einer spannungsempfindlichen Einrichtung zur digitalen Synchronisierung des
Empfangsverteilers eines Zeitmultiplexübertragungssystems The pulse-shaped information arrives in any phase position and is distorted through the transmission channel to the input E of the arrangement, where it is used to control a voltage-sensitive device for digital synchronization of the
Receiving distributor of a time division multiplex transmission system
Zusatz zum Patent: 1195 373Addendum to the patent: 1195 373
ίο ίο
Anmelder:
TelefunkenApplicant:
Telefunken
Patentverwertungsgesellschaft m. b. H.,
Ulm/Donau, Elisabethenstr. 3Patentverwertungsgesellschaft mb H.,
Ulm / Danube, Elisabethenstr. 3
Als Erfinder benannt:
Dipl.-Ing. Gerhard Hofmeister,
Dietrich Rinck, Bacloiang (Württ.)Named as inventor:
Dipl.-Ing. Gerhard Hofmeister,
Dietrich Rinck, Bacloiang (Württ.)
Kippstufe ST, beispielsweise eines Schmitt-Triggers, dienen. Das Kippen des Schmitt-Triggers ST, das durch einen über den Eingang E ankommenden Impuls ausgelöst wird, läßt einen Taktzähler TZ anlaufen und schaltet eine bistabile Kippschaltung FF um.Flip-flop ST, for example a Schmitt trigger, are used. The toggling of the Schmitt trigger ST, which is triggered by a pulse arriving via the input E , causes a clock counter TZ to start and switches a bistable toggle circuit FF .
Mit der Taktfrequenz eines Impulsgenerators läuft der Taktzähler TZ auf eine vorher eingestellte Stellung, z. B. die Stellung 4, und schaltet, falls inzwischen der Schmitt-Trigger ST in die Ausgangslage zurückgekippt ist, die bistabile Kippschaltung FF erneut um, so daß sich diese wieder in ihrem ursprünlichen Zustand befindet. Ist der Schmitt-Trigger ST noch nicht zurückgekippt, wenn der Taktzähler TZ die vorher eingestellte Stellung erreicht hat, so startet dieser zu einem neuen Umlauf, ohne zuvor die bistabile Kippschaltung FF umzuschalten. Der Umlauf des Taktzählers TZ wird, um die Identifizierung eines verlängerten Impulses als zwei Impulse zu verhindern, auf jeder Stellung m < wobei η die Zahl derWith the clock frequency of a pulse generator, the clock counter TZ runs to a previously set position, e.g. B. the position 4, and switches, if the Schmitt trigger ST has tilted back to the starting position in the meantime, the bistable flip-flop FF again so that it is back in its original state. If the Schmitt trigger ST has not yet turned back when the clock counter TZ has reached the previously set position, it starts a new cycle without first switching over the bistable multivibrator FF . The cycle of the clock counter TZ is, in order to prevent the identification of a prolonged pulse as two pulses, on each position m <where η is the number of
**
bei einem vollen Umlauf abgezählten Stellung ist, in die Nullstellung gebracht, sobald der Schmitt-Trigger ST in die Ausgangslage zurückkippt, und schaltet die bistabile Kippschaltung FF um. Am Ausgang der bistabilen Kippschaltung FF liegt ein Schieberegister SR, das von einem Bitzähler BZ weitergeschaltet wird.is the position counted during a full revolution, brought into the zero position as soon as the Schmitt trigger ST tilts back into the starting position, and switches the bistable flip-flop FF . At the output of the flip-flop FF there is a shift register SR which is switched on by a bit counter BZ .
709 548/131709 548/131
Claims (4)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET23180A DE1195373B (en) | 1962-12-11 | 1962-12-11 | Device for digital synchronization of the reception distributor of a time division multiplex transmission system |
GB4768863A GB1069650A (en) | 1962-12-11 | 1963-12-03 | Digital synchronisation arrangements for time multiplex transmission receivers |
DE1964T0026154 DE1238079B (en) | 1962-12-11 | 1964-05-08 | Device for the digital synchronization of the reception distributor of a time division multiplex transmission system |
GB1878165A GB1102715A (en) | 1962-12-11 | 1965-05-04 | Improvements in or relating to digital synchronisation arrangements for time multiplex transmission system receivers |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET23180A DE1195373B (en) | 1962-12-11 | 1962-12-11 | Device for digital synchronization of the reception distributor of a time division multiplex transmission system |
DE1964T0026154 DE1238079B (en) | 1962-12-11 | 1964-05-08 | Device for the digital synchronization of the reception distributor of a time division multiplex transmission system |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1238079B true DE1238079B (en) | 1967-04-06 |
Family
ID=25999667
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DET23180A Pending DE1195373B (en) | 1962-12-11 | 1962-12-11 | Device for digital synchronization of the reception distributor of a time division multiplex transmission system |
DE1964T0026154 Pending DE1238079B (en) | 1962-12-11 | 1964-05-08 | Device for the digital synchronization of the reception distributor of a time division multiplex transmission system |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DET23180A Pending DE1195373B (en) | 1962-12-11 | 1962-12-11 | Device for digital synchronization of the reception distributor of a time division multiplex transmission system |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE1195373B (en) |
GB (2) | GB1069650A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1267248B (en) * | 1966-02-17 | 1968-05-02 | Telefunken Patent | Process for the digital synchronization of pulse-coded information of a data transmission system |
US3562432A (en) * | 1966-11-16 | 1971-02-09 | Communications Satellite Corp | Synchronizer for time division multiple access satellite communication system |
US3526719A (en) * | 1966-11-17 | 1970-09-01 | Communications Satellite Corp | Double aperture technique for detecting station identifying signal in a time division multiple access satellite communication system |
GB1176869A (en) * | 1967-11-06 | 1970-01-07 | Marconi Co Ltd | Improvements in or relating to Multiplexing Arrangements. |
GB1280827A (en) * | 1968-10-28 | 1972-07-05 | Post Office | Improvements relating to apparatus for synchronizing a clock with a received signal |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1225043A (en) * | 1959-02-12 | 1960-06-28 | Improvements to small-size electromagnetic relays for low powers |
-
1962
- 1962-12-11 DE DET23180A patent/DE1195373B/en active Pending
-
1963
- 1963-12-03 GB GB4768863A patent/GB1069650A/en not_active Expired
-
1964
- 1964-05-08 DE DE1964T0026154 patent/DE1238079B/en active Pending
-
1965
- 1965-05-04 GB GB1878165A patent/GB1102715A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1195373B (en) | 1965-06-24 |
GB1069650A (en) | 1967-05-24 |
GB1102715A (en) | 1968-02-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
E77 | Valid patent as to the heymanns-index 1977 | ||
EF | Willingness to grant licences |