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 transmissionsInfo
- 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
Links
- 230000005540 biological transmission Effects 0.000 title claims description 12
- 238000000354 decomposition reaction Methods 0.000 claims 1
- 238000010894 electron beam technology Methods 0.000 claims 1
- 230000010355 oscillation Effects 0.000 claims 1
- 230000010363 phase shift Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
- H04N5/06—Generation of synchronising signals
- H04N5/067—Arrangements or circuits at the transmitter end
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
- H04N5/06—Generation of synchronising signals
- H04N5/067—Arrangements or circuits at the transmitter end
- H04N5/073—Arrangements 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)
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)
| 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)
| 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 |
-
1936
- 1936-08-06 DE DEF4262D patent/DE1018098B/en active Pending
Patent Citations (9)
| 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)
| 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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