DE850905C - Arrangement for the simplified multiple utilization of line channels by means of audio frequencies - Google Patents
Arrangement for the simplified multiple utilization of line channels by means of audio frequenciesInfo
- Publication number
- DE850905C DE850905C DEO1537A DEO0001537A DE850905C DE 850905 C DE850905 C DE 850905C DE O1537 A DEO1537 A DE O1537A DE O0001537 A DEO0001537 A DE O0001537A DE 850905 C DE850905 C DE 850905C
- Authority
- DE
- Germany
- Prior art keywords
- frequencies
- arrangement
- characters
- line channels
- receiving point
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/14—Arrangements providing for calling or supervisory signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/02—Channels characterised by the type of signal
- H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Description
Es sind bislang Verfahren bekannt, die es gestatten, bei der Fernübertragung von Stromstößen nach dem Impulshäufigkeitsverfahren Leitungskanäle unter Anwendung von Tonfrequenzen mehrfach auszunützen. Dabei wird jedem Geber eine bestimmte Frequenz zugeordnet. Diese wird in Abhängigkeit von der Zeichenfolge getastet, wobei zwischen Zeichenfolge und Tastfrequenz direkte Abhängigkeit besteht. Die Tonfrequenzimpulse sämtlicher Geber werden auf den zur Fernübertragung benützten Leitungskanal gegeben und auf der Empfangsseite mit Hilfe von abgestimmten Siebketten oder Frequenzrelais wieder auseinandergetrennt und den eigentlichen Empfängern zugeführt. Diesen Empfängern obliegt es dann, die Impulsfrequenz gegebenenfalls im Anzeigewert umzuformen, die mit den Impulsfolgender Sendestelle übereinstimmen.There are previously known methods that allow remote transmission of power surges according to the pulse frequency method using conduits multiple use of audio frequencies. Each encoder is given a specific frequency assigned. This is keyed depending on the character string, with between There is a direct dependency on the character sequence and the sampling frequency. The audio frequency pulses all encoders are sent to the line channel used for remote transmission and on the receiving side with the help of matched filter chains or frequency relays separated again and fed to the actual recipients. These recipients It is then incumbent upon to convert the pulse frequency into the display value if necessary match the pulse trains of the transmitting station.
Dieses Verfahren benötigt für jeden Geber einen besonderen Tonfrequenzgenerator, der am Ort des jeweiligen Gebers stehen muß. Dies wirkt sich besonders dann ungünstig aus, wenn beispielsweise von einem Ort nur einmal Zeichen, die anderen Zeichen aber von anderen Stellen übertragen werden sollen. Die Industrie stellt Tonfrequenzgeneratoren in Einheiten von 6, 12, 18 verschiedenen Frequenzen her. In solchen Fällen aber, wie oben geschildert, können also nicht alle Frequenzen ausgenützt werden. In diesem Fall bleibt nur der äußerst kostspielige und einen großen Aufwand erfordernde Weg, jeden Geber mit einem eigenen Röhrengenerator auszustatten.This procedure requires a special tone frequency generator for each transmitter, which must be at the location of the respective donor. This has a particularly unfavorable effect off, if, for example, only one character from a location, but the other characters should be transferred from other bodies. The industry makes tone frequency generators in units of 6, 12, 18 different frequencies. In such cases, however, As described above, not all frequencies can be used. In this Case, there is only the extremely costly and laborious way to to equip each transmitter with its own tube generator.
Der geschilderte Nachteil wird durch die neue Schaltung vermieden und soll an Hand der Abbildung näher erläutert werden.The described disadvantage is avoided by the new circuit and should be explained in more detail using the illustration.
Der Tonfrequenzgenerator, der f" Frequenzen erzeugen möge, wird an der Empfangsstelle aufgestellt. Seine sämtlichen Frequenzen werden über abgestimmte Kreise parallel geschaltet. Das sich ergebende Gemisch aller Frequenzen wird über einen Leitungskanal an sämtliche Stationen gegeben, von welchen aus die Zeichen an die Empfangsstelle gegeben werden sollen. In den einzelnen Geberstationen werden durch abgestimmte Filter Fi so viele Frequenzen, als Meßstellen in einer Gruppe vonAnpassungswi.derständenvorhandeti sind,inAl>-hängigkeit von der zu übertragenden Zeichenfolge getastet. Die getasteten Frequenzen werden wieder einem gemeinsamen Leitungskanal zugeleitet und zur Empfangsstelle zurückgeführt. Dort wird das Frequenzgemisch durch abgestimmte Filter Fi wieder auseinandergetrennt. Den Empfängern E mit ihren Anzeigevorrichtungen I wird jeweils eine der getrennten Frequenzen zugeführt.The audio frequency generator, which is supposed to generate f "frequencies, is switched on set up by the receiving office. All of its frequencies are tuned over Circuits connected in parallel. The resulting mixture of all frequencies is over given a conduit to all stations from which the characters should be given to the receiving office. In the individual donor stations through matched filters Fi as many frequencies as there are measuring points in a group of adaptation resistances are available, depending on the Keyed string. The sampled frequencies become common again Line channel fed and returned to the receiving point. There is the frequency mix separated again by matched filters Fi. The recipients E with their Display devices I are each fed to one of the separate frequencies.
Diese Anordnung kann so oft parallel geschaltet werden, als es die Leistungsfähigkeit der Tonfrequenzgeneratoren erlaubt.This arrangement can be connected in parallel as often as the Performance of the audio frequency generators allowed.
Hier zeigt sich auch der weitere Vorteil dieser Schaltung. In den einzelnen Geberstationen, aus denen die Zeichen übertragen werden, sind keinerlei Hilfsspannungen nötig. Alle Teile, die Hilfsspannungen und eine evtl. Wartung erfordern, sind an einer Zentralstelle zusammengefaßt.This is where the further advantage of this circuit becomes apparent. In the individual donor stations from which the characters are transmitted are not Auxiliary voltages required. All parts that require auxiliary voltages and any maintenance, are combined at a central point.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEO1537A DE850905C (en) | 1951-04-12 | 1951-04-12 | Arrangement for the simplified multiple utilization of line channels by means of audio frequencies |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEO1537A DE850905C (en) | 1951-04-12 | 1951-04-12 | Arrangement for the simplified multiple utilization of line channels by means of audio frequencies |
Publications (1)
Publication Number | Publication Date |
---|---|
DE850905C true DE850905C (en) | 1952-09-29 |
Family
ID=7349600
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEO1537A Expired DE850905C (en) | 1951-04-12 | 1951-04-12 | Arrangement for the simplified multiple utilization of line channels by means of audio frequencies |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE850905C (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1044680B (en) * | 1957-11-02 | 1958-11-20 | Metrawatt Ag | Method for the simultaneous remote transmission of several measured values via one channel, whereby the measured values are represented as frequencies |
DE1077846B (en) * | 1958-04-17 | 1960-03-17 | Standard Elektrik Lorenz Ag | Circuit arrangement for signaling from the moving conveyor basket |
DE1158547B (en) * | 1962-01-23 | 1963-12-05 | A Stankiewicz G M B H Chemisch | Arrangement to improve the audibility of acoustic signals |
DE1159820B (en) * | 1954-02-26 | 1963-12-19 | Bendix Corp | Device for remote transmission of coded signals with a single transmission channel |
DE1217057B (en) * | 1961-08-12 | 1966-05-18 | Continental Gummi Werke Ag | Process for reworking defects on air suspension bellows or similar hollow bodies made of natural or synthetic rubber with reinforcement inserts |
DE1256711B (en) * | 1962-05-30 | 1967-12-21 | Nippon Electric Co | Remote control and monitoring system for a communication network |
DE1296551B (en) * | 1964-04-29 | 1969-05-29 | Siemens Ag | Order to identify the location of reporting points |
DE2713918A1 (en) * | 1977-03-29 | 1978-10-05 | Siemens Ag | Frequency multiplexed signal transmission - allows high channel density by relating all signal frequencies to base reference frequency |
-
1951
- 1951-04-12 DE DEO1537A patent/DE850905C/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1159820B (en) * | 1954-02-26 | 1963-12-19 | Bendix Corp | Device for remote transmission of coded signals with a single transmission channel |
DE1044680B (en) * | 1957-11-02 | 1958-11-20 | Metrawatt Ag | Method for the simultaneous remote transmission of several measured values via one channel, whereby the measured values are represented as frequencies |
DE1077846B (en) * | 1958-04-17 | 1960-03-17 | Standard Elektrik Lorenz Ag | Circuit arrangement for signaling from the moving conveyor basket |
DE1217057B (en) * | 1961-08-12 | 1966-05-18 | Continental Gummi Werke Ag | Process for reworking defects on air suspension bellows or similar hollow bodies made of natural or synthetic rubber with reinforcement inserts |
DE1158547B (en) * | 1962-01-23 | 1963-12-05 | A Stankiewicz G M B H Chemisch | Arrangement to improve the audibility of acoustic signals |
DE1256711B (en) * | 1962-05-30 | 1967-12-21 | Nippon Electric Co | Remote control and monitoring system for a communication network |
DE1296551B (en) * | 1964-04-29 | 1969-05-29 | Siemens Ag | Order to identify the location of reporting points |
DE2713918A1 (en) * | 1977-03-29 | 1978-10-05 | Siemens Ag | Frequency multiplexed signal transmission - allows high channel density by relating all signal frequencies to base reference frequency |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE850905C (en) | Arrangement for the simplified multiple utilization of line channels by means of audio frequencies | |
DE890470C (en) | Device for the electrical remote display of messages, measured values, etc. like | |
DE811807C (en) | Arrangement for the simultaneous transmission of several measured values | |
DE2316166B2 (en) | Community antenna system with alarm devices for the individual participants | |
DE962265C (en) | System for the distribution of several television programs over lines | |
DE1122581B (en) | Method and circuit arrangement for the approximate simulation of the short-term spectra of speech signals transmitted according to the vocoder method | |
DE918976C (en) | Process for the simultaneous transmission of several measured values by means of pulses | |
DE934562C (en) | Arrangement for the transmission of a larger number of measured values | |
DE900583C (en) | Method for message transmission by changing the frequency by changing the running time in electrical chain links at the input and output of an electrical transmission path | |
AT156437B (en) | Arrangement for the transmission of messages by means of high-frequency alternating currents, preferably via lines. | |
DE928110C (en) | Four-wire carrier frequency transmission system | |
DE476848C (en) | Arrangement for the transmission of measured values on a high-frequency line, in particular a power line used for telephony | |
DE670586C (en) | Arrangement for coupling normal radio receivers that are asymmetrical to earth to networks, over which messages are transmitted by means of high-frequency carriers | |
DE2140722C3 (en) | Receiving antenna arrangement for VHF audio broadcasting | |
DE826009C (en) | Transmission system for radio programs | |
DE477114C (en) | Process for increasing the efficiency in circuits that are free of feedback between the receiving and transmitting circuits | |
DE820024C (en) | Arrangement for the optional connection of devices or exchange lines to two-wire or four-wire carrier frequency trunk lines | |
DE1288823B (en) | Circuit arrangement for transmitting fast clock pulses | |
DE370959C (en) | Device for sending electrical waves | |
DE886016C (en) | Method for generating control frequencies for level regulation in carrier frequency systems | |
DE1063648B (en) | Carrier frequency system, especially for smaller numbers of channels | |
DE862466C (en) | Circuit arrangement for intermediate points in communication links that work with a high-frequency carrier | |
DE953884C (en) | Method for measuring the damping of carrier frequency systems | |
DE846705C (en) | Transmitter for multi-channel carrier frequency systems with transmission of the carrier and both sidebands | |
DE926432C (en) | Synchronized multiple microwave generator |