DE606542C - Telegraph system based on the start-stop principle with devices for automatic feedback of a subscriber identification - Google Patents

Description

Telegraph system based on the start-stop principle with facilities for automatic feedback of a subscriber number for telephone systems are self-acting responders known to those with the participant speech apparatus connected and in the event of the subscriber's absence after the call has been made send a suitable message to the calling party. Submitting the report takes place either by telephone with phonographic devices or by telegram special signal generators that send out a fixed sequence of impulses and control a character receiver that is switched on at the calling subscriber. The message can contain various types of information. -it is essential, however, that the calling Subscriber 'receives an identifier of the called subscriber and thereby the correct establishment of the connection is confirmed.

The invention now aims to create a similar transport option for telegraph systems based on the start-stop principle, especially for teleprinters, Remote printer and the like finite switching operation. The use of for telephone systems known telegraphic responder is not possible without further information, since inter alia. the risk of incorrectly influencing the existing receiving equipment or the occurrence of other malfunctions exists. In addition, since each participant receives a complete Responding and receiving device assigned «must be grounded, would be the resulting Costs very substantial.

A significant cost reduction and elimination at the same time the aforementioned difficulties is achieved according to the invention in that a feedback device adapted in its mode of operation of the system is provided and the receiving device used for normal sweeping to record the message is used.

This adaptation to the mode of operation of the teleprinter system after The start-stop principle is achieved by connecting a marking device, which on certain. composed according to the normal telex characters. Pulse combinations forming the feedback are set in their entirety and runs automatically after triggering controlled via the subscriber connection, with the pulse distributor, which is also used for sending and which receives the individual pulses of the named Pulse combinations in the correct order and in one of the operating modes of the System adapted clock on -the line transmits, so the receipt of the feedback is possible through the normal telex receiver.

A perforated tape transmitter, a rotary selector type, can be used as a surge prayer trained Stepping mechanism, a contact mechanism with cam disks or the like Transmitter, in particular its impulse distributor, can also be used. Through this The feedback device becomes special in connection with the existing transmitter cheap and simple in structure. as the expensive facilities. such as B. Relays and synchronization devices, can be used together. Even the Rauinbedari of the feedback device is very small, and it is without further possible, the facility with the teletype or remote printing apparatus structurally to unite into a whole.

The feedback device is expediently provided with a contact in this way of the receive = relay connected. that it is triggered by this. once the Incoming call impulse. The receiving relay is preferably switched so that its The anchor is thrown once by the call impulse. The new situation remains during the Operation in all drawing breaks. is therefore according to the parlance as to designate actual rest position. On the other hand, when the entire facility is idle, d. H. before the call. the anchor is in the other position. those with the work situation agrees, but is better called the wrong position of rest.

Will now, for example, in a self-connecting remote printer system If a participant is to transmit a message to another, he puts it first in a known way the N # 'connection and then presses a call button, whereupon In the called station, the armature of the receiving relay is moved and the feedback device is put into action. Instead of the button, switching means can also be provided, the feedback device for start-up automatically after switching bring.

The response is now received from the recipient of the calling subscriber written down. so that this the correct establishment of the connection and the Can recognize that the called station is ready to receive. Then the The feedback device is automatically silent again and switches the receiving device on, unless this has already been caused by the call impulse.

The feedback device remains while the message transmission is now beginning ineffective; it is only ready for operation again after the connection has been disconnected made.

In the case of outgoing traffic, the feedback device must not start, otherwise interference would be inevitable. Switching means are therefore provided which directly or indirectly by the participant before or when the transmitter is switched on put into action "-earth and at a suitable point one of the circuits of the Interrupt the pulse generator.

An embodiment of the subject invention is shown in the figure shown. In this case, a rotary selector is used as the pulse generator for the feedback used, the arms of which are designated by dl to d. L means the receiving relay, whose anchor e is shown in the wrong rest position.

The receiving relay is connected on the one hand to the line L, on the other hand Via the distributor brush B with the Ruliesegmcnt O of the distributor, which has a Changeover contact is connected to + battery. This contact s is the sender "des Feril writing device and is assigned each time characters are sent when a button is pressed for the purpose of delivering a trigger impulse to - battery switched.

If a call impulse arrives, e is transferred. This causes relay 1 to respond and, with., R, switches relay I 'on. Y responds and applies with y, - and y = the voltage source S to the apparatus, so that its drive motor 1I starts up. At the same time, the J relay is energized in the following way: -'-- battery, normally closed contact a, relay J, button An, selector arm dl, shifted contact y3, - battery. The contact il turns on the rotary magnet D so that the voter takes his first step. At the same time the delay relay h is energized, which switches off the keyboard contacts (T) of the device with v1 and v2. During the step movement of the selector i2 is also closed, so that the circuit for J remains closed even if an interruption takes place when the arm dl passes from one contact to the other.

The arms d = to dB are now, depending on the character to be transmitted, partly to -f--, partly to --battery, so that a corresponding pulse sequence (for example + - -f- - +, as shown) is sent into the line when the brush is B turns over the transmitter disc.

The rotating movement of the brush is known in and of itself, every time for one revolution, triggered by the control magnet St, which is activated when the J relay via i "is excited by the charging current of capacitor C.

During the cycle, contact a is open and only becomes after End of circulation closed again. This will turn J on again, so that D speaks again and the voter takes another step power. The pulse sequence corresponding to the second selector step is now transmitted via the transmitter disc, for example - -i- -j--, sent on the line.

The process described is repeated until the rh Arrnt of the voter has accrued to the last contact. Here he stops, there 1-g is still open.

During the feedback, the relays X, I 'and L' are those with delayed -Waste are formed. constantly excited. As soon as the voter on the last contact has arrived, I 'drops and then sets the keyboard contacts (T) with v1 and v =. which were switched off during the feedback, to the battery or the \ Tetz.

The feedback has now ended and normal traffic can begin. Relays 1 and F remain continuously energized during traffic. First after the end of the traffic, the anchor of the receiving relay is in the wrong rest position covered. Z and F are then de-energized, so that .i- $ is closed again. Via z-, I is addressed again. D receives a new pulse and switches move the selector to the zero position. The control magnet St is no longer excited because x = is already open.

The system is now ready for a new call.

In the case of outgoing traffic, the subscriber flips the switch Kt, for example a button, either before or at the same time as the transmitter is switched on. The F-relay is then switched on in the l% anally, so that y1 and y = are closed. At the same time, Ans is opened so that I does not respond and the feedback device does not come into action.

Claims (1)

PATENT CLAIMS: i. Telegraph system based on the start-stop principle with facilities for automatic feedback of a subscriber identifier, e.g. B. the name or number of the called subscriber to the calling subscriber, characterized by the connection of the marking device, which refers to certain, composed in accordance with the normal telex characters, in their entirety the feedback forming pulse combinations is set and after over the subscriber connection controlled triggering runs automatically, finite your pulse distributor that is also used for sending, which the individual impulses of the mentioned impulse combinations in the correct order: -., follow and transmits to the line in a cycle adapted to the operating mode of the system, so that the reception of the response by the normal telex receiver is possible is. =. Plant according to claim i. characterized in that the I # drawing # device of the feedback: is designed as a punched tape encoder. 3. Plant according to claim 2. characterized in that the perforated tape according to the feedback has the shape of an endless ribbon. -System according to claim i. characterized, that the marking device of the feedback device as a contact with cam control is trained. 3. Plant according to claim i. characterized in that the marking device of the feedback is designed in the form of a stepping mechanism. 6. Plant night Claim 3, characterized in that the stepping mechanism is in the manner of a rotary selector is designed, the contact bank according to the current surge combinations of Feedback is wired. 7. Plant according to claim i to 6, characterized. that the feedback device is started by the receiving relay, "-elches expediently in an idle state before establishing the connection different idle state, leaving this idle state, z. B. when switching through the connection. puts the feedback device into operation. B. System according to claim i to 7, characterized by a call button, means .deren after establishing the call, the feedback device assigned to the called station can be put into action from the calling station. G. Plant after Claims i to ä, characterized in that the Rücknieldeeinrichtung with outgoing Traffic. d. H. so on. the calling station, remains ineffective.