DE1018098B - Arrangement for the synchronization of several broadcasting points from a central point for television and image transmissions - Google Patents

Arrangement for the synchronization of several broadcasting points from a central point for television and image transmissions

Info

Publication number
DE1018098B
DE1018098B DEF4262D DEF0004262D DE1018098B DE 1018098 B DE1018098 B DE 1018098B DE F4262 D DEF4262 D DE F4262D DE F0004262 D DEF0004262 D DE F0004262D DE 1018098 B DE1018098 B DE 1018098B
Authority
DE
Germany
Prior art keywords
arrangement
synchronization
television
central point
pulse generators
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
Application number
DEF4262D
Other languages
German (de)
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.)
Robert Bosch Fernsehanlagen GmbH
Original Assignee
Fernseh 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 Fernseh GmbH filed Critical Fernseh GmbH
Publication of DE1018098B publication Critical patent/DE1018098B/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/04Synchronising
    • H04N5/06Generation of synchronising signals
    • H04N5/067Arrangements or circuits at the transmitter end
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/04Synchronising
    • H04N5/06Generation of synchronising signals
    • H04N5/067Arrangements or circuits at the transmitter end
    • H04N5/073Arrangements or circuits at the transmitter end for mutually locking plural sources of synchronising signals, e.g. studios or relay stations

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Description

Anordnung zur Synchronisierung mehrerer Sendestellen von einer zentralen Stelle aus bei Fernseh- und Bildübertragungen Die Erfindung betrifft eine Anordnung, bei der mehrere Sendestellen oder Aufnahmegeräte vorhanden sind, wie sie z. B. Anwendung finden können für Reportagezwecke, bei denen an verschiedenen Stellen Aufnahmegeräte vorgesehen und mit einer zentralen Stelle verbunden sind, von der für die verschiedenen Stellen die Synchronisierimpulse geliefert werden. Bei derartigen Anordnungen ist es notwendig, jede einzelne Sendestelle bzw. jedes einzelne Aufnahmegerät von der zentralen Stelle aus derart zu steuern, daß man ohne weiteres von einer Sendestelle zur anderen übergehen kann, also Überblendungen der verschiedenen Aufnahmen vornehmen kann, ohne daß auf der Empfangsseite eine Phasennachstellung der entsprechenden Kippschwingungsgeräte notwendig ist.Arrangement for the synchronization of several transmission points from a central one Body for television and video transmissions The invention relates to an arrangement, in which several broadcasting stations or recording devices are available, as they are, for. B. Application can be found for reportage purposes, in which recording devices in different places are provided and connected to a central point of the for the various Set the synchronization pulses to be delivered. In such arrangements it is necessary to transfer each individual broadcasting point or each individual recording device from the central point to be controlled in such a way that you can easily from a transmission point can go over to the other, so make cross-fades of the various recordings can without a phase adjustment of the corresponding on the receiving side Tilting vibration equipment is necessary.

Es ist bekannt, von einem zentral gelegenen Taktgeber Synchronisierzeichen auszusenden und damit die an verschiedenen Unterstationen arbeitenden Abtast- und Sendeeinrichtungen zu synchronisieren. Ferner ist es bekannt, daß bei der Übertragung von Synchronisierzeichen über längere Strecken infolge der auftretenden Laufzeiten Phasenverschiebungen eintreten können und zum Ausgleich dieser Phasenverschiebungen phasenschiebende Einrichtungen vorzusehen sind. Bei diesem Stand der Technik wäre es naheliegend, phasenschiebende Mittel im Übertragungsweg für die Synchronisierimpulse bzw. für die Bildinhaltssignale vorzusehen.It is known to synchronize signals from a centrally located clock generator to send out and thus the scanning and To synchronize broadcasting facilities. It is also known that when transmitting of synchronization characters over long distances due to the running times that occur Phase shifts can occur and to compensate for these phase shifts phase-shifting devices are to be provided. With this state of the art it would be Obviously, phase-shifting means in the transmission path for the synchronization pulses or to be provided for the image content signals.

Die Erfindung beruht auf der Erkenntnis, daß eine Phasenverschiebung der zur Übertragung gelangenden Synchronisierimpulse oder der Bildinhaltssignale und Synchronisierimpulse enthaltenen Signalgemische mit großem Aufwand verbunden ist, da eine phasengleichmäßige Verschiebung für ein sehr großes Frequenzband notwendig wäre.The invention is based on the knowledge that a phase shift the synchronization pulses or the image content signals to be transmitted and signal mixtures contained in synchronization pulses are associated with great effort is, since a phase-uniform shift is necessary for a very large frequency band were.

Die Erfindung betrifft eine Anordnung zur Synchronisierung mehrerer Sendestellen von einer zentralen Stelle aus bei Fernseh- und Bildübertragungen unter Verwendung eines im wesentlichen sinusförmigen Wechselstrom erzeugenden Hauptschwingungserzeugers und besteht darin, daß zwischen dem Hauptschwingungserzeuger einerseits und den vom Hauptschwingungserzeuger gesteuerten Synchronisierimpulsgeneratoren für die einzelnen auf der Sendeseite angeordneten Sendestellen andererseits phasenschiebende Einrichtungen vorgesehen sind.The invention relates to an arrangement for synchronizing several Broadcasting points from a central point for television and image transmissions Use of an essentially sinusoidal alternating current generating main oscillator and consists in that between the main vibrator on the one hand and the synchronizing pulse generators controlled by the main vibrator for the individual transmission points arranged on the transmission side, on the other hand, phase-shifting Facilities are provided.

Die Erfindung besitzt den Vorteil, daß die phasenschiebende Einrichtung nur zur Phasenverschiebung eines sinusförmigen Wechselstroms geeignet sein muß und daher viel einfacher ausgebildet ist und dabei trotzdem die gewünschte richtige Phaseneinstellung mit Sicherheit gewährleistet. Da der sinusförmige Wechselstrom durch die phasenschiebenden Mittel bereits die richtige Phasenlage besitzt, die die für die einzelnen Sendestellen vorgesehenen Synchronisierimpulsgeneratoren steuert, wird gleichzeitig erreicht, daß die von diesen Synchronisierimpulsgeneratoren gelieferten Synchronisierimpulse in ihrer Form bei der Übertragung durch phasenschiebende Mittel nicht mehr beeinflußt werden und somit eine vollständige Erhaltung der Flankenbegrenzung der von den Synchronisierimpulsgeneratoren gelieferten Synchronisierimpulse gewährleistet ist, wodurch sich wieder eine einwandfreie Synchronisierung der Kippgeräte an den Aufnahmestellen ergibt.The invention has the advantage that the phase-shifting device must only be suitable for phase shifting a sinusoidal alternating current and is therefore designed much simpler and still the desired correct one Phase adjustment guaranteed with certainty. Because the sinusoidal alternating current already has the correct phase position due to the phase-shifting means controls the synchronization pulse generators provided for the individual transmission points, it is achieved at the same time that the synchronizing pulse generators supplied by these Synchronization pulses in their form when transmitted by phase-shifting means can no longer be influenced and thus a complete preservation of the edge limitation of the synchronization pulses supplied by the synchronization pulse generators is, which again ensures perfect synchronization of the tilting devices to the Admission sites results.

Durch die Wirkung der phasenschiebenden Kreise ist ein einfaches Mittel gegeben, um von einer Sendestelle zur anderen überzugehen, ohne daß auf der Empfangsseite eine Phasennachstellung der entsprechenden Kippschwingungsgeräte notwendig ist.The action of the phase-shifting circles is a simple remedy given to go from one sending point to another without being on the receiving side a phase adjustment of the corresponding tilting vibration devices is necessary.

Claims (1)

PATENTANSPRÜCHE: 1. Anordnung zur Synchronisierung mehrerer Sendestellen von einer zentralen Stelle aus bei Fernseh- und Bildübertragungen unter Verwendung eines im wesentlichen sinusförmigen Wechselstrom erzeugenden Hauptschwingungserzeugers, dadurch gekennzeichnet, daß zwischen dem Hauptschwingungserzeuger einerseits und den vom Hauptschwingungserzeuger gesteuerten Synchronisierimpulsgeneratoren für die einzelnen auf der Sendeseite angeordneten Sendestellen andererseits phasenschiebende Einrichtungen vorgesehen sind. 2. Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß der Hauptschwingungsgenerator außer den Zerlegungseinrichtungen und den Synchronisierimpulsgeneratoren zusätzliche Impulsgeneratoren steuert, die das Elektronenbündel während der Rücklaufzeit auslöschen. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 498 415; britische Patentschriften Nr. 322 025, 402 121, 415 118; französische Patentschriften Nr. 675 539, 699 544, 738 750, 771718, 773 485. PATENT CLAIMS: 1. Arrangement for synchronizing several transmission points from a central point in television and image transmissions using a substantially sinusoidal alternating current generating main oscillator, characterized in that between the main oscillator on the one hand and the main oscillator controlled by the main oscillator for the individual synchronizing pulse generators arranged on the transmission side Transmitting stations on the other hand phase-shifting devices are provided. 2. Arrangement according to claim 1, characterized in that the main oscillation generator, in addition to the decomposition devices and the synchronizing pulse generators, controls additional pulse generators which extinguish the electron beam during the retrace time. Documents considered: German Patent No. 498,415; British Patent Nos. 322 025, 402 121, 415 118; French patents nos. 675 539, 699 544, 738 750, 771718, 773 485.
DEF4262D 1935-08-06 1936-08-06 Arrangement for the synchronization of several broadcasting points from a central point for television and image transmissions Pending DE1018098B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1018098X 1935-08-06

Publications (1)

Publication Number Publication Date
DE1018098B true DE1018098B (en) 1957-10-24

Family

ID=10868296

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF4262D Pending DE1018098B (en) 1935-08-06 1936-08-06 Arrangement for the synchronization of several broadcasting points from a central point for television and image transmissions

Country Status (1)

Country Link
DE (1) DE1018098B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1170458B (en) * 1959-03-14 1964-05-21 Fernseh Gmbh Method and arrangement for switching television signals with practically the same synchronization frequency
DE1197120B (en) * 1962-11-13 1965-07-22 Fernseh Gmbh Method and circuit arrangement for synchronizing a television image signal generator
DE1258890B (en) * 1961-04-05 1968-01-18 Pye Ltd Control circuit for television recorders

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB322025A (en) * 1928-09-17 1929-11-28 Graham Amplion Ltd Improvements in and relating to systems for the electrical transmission of photographs and the like and for television
FR675539A (en) * 1929-04-30 1930-02-11 Electrical Res Prod Inc Electric transmission system
DE498415C (en) * 1924-12-09 1930-05-22 Paul Nipkow Device for achieving synchronism in apparatus for electrical image transmission
FR699544A (en) * 1931-09-26 1931-02-16 Westinghouse Electric & Mfg Co Remote transmission system of images and other objects
FR738750A (en) * 1931-06-19 1932-12-29 Thomson Houston Comp Francaise Improvements to electric pulse generators
GB402121A (en) * 1932-05-25 1933-11-27 Marconi Wireless Telegraph Co Improvements in or relating to television systems
GB415118A (en) * 1933-02-15 1934-08-15 Emi Ltd Improvements in or relating to television and the like systems
FR773485A (en) * 1933-06-01 1934-11-19 Rca Corp Improvements to television systems

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE498415C (en) * 1924-12-09 1930-05-22 Paul Nipkow Device for achieving synchronism in apparatus for electrical image transmission
GB322025A (en) * 1928-09-17 1929-11-28 Graham Amplion Ltd Improvements in and relating to systems for the electrical transmission of photographs and the like and for television
FR675539A (en) * 1929-04-30 1930-02-11 Electrical Res Prod Inc Electric transmission system
FR738750A (en) * 1931-06-19 1932-12-29 Thomson Houston Comp Francaise Improvements to electric pulse generators
FR699544A (en) * 1931-09-26 1931-02-16 Westinghouse Electric & Mfg Co Remote transmission system of images and other objects
GB402121A (en) * 1932-05-25 1933-11-27 Marconi Wireless Telegraph Co Improvements in or relating to television systems
GB415118A (en) * 1933-02-15 1934-08-15 Emi Ltd Improvements in or relating to television and the like systems
FR771718A (en) * 1933-02-15 1934-10-15 Emi Ltd Improvements to television systems or similar systems
FR773485A (en) * 1933-06-01 1934-11-19 Rca Corp Improvements to television systems

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1170458B (en) * 1959-03-14 1964-05-21 Fernseh Gmbh Method and arrangement for switching television signals with practically the same synchronization frequency
DE1258890B (en) * 1961-04-05 1968-01-18 Pye Ltd Control circuit for television recorders
DE1197120B (en) * 1962-11-13 1965-07-22 Fernseh Gmbh Method and circuit arrangement for synchronizing a television image signal generator

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