DEA0019255MA - - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

Registration date: December 1, 1953 Published on October 11, 1956

GERMAN PATENT OFFICE

The invention relates to pulse generators, especially with key control, in which a digit memory circuit and an electronic Counting tube circuit is used. Key pulse generators are usually found in communications engineering, especially in telephone exchange technology, application where certain information, for example a series of digits for setting or selecting various facilities above ίο a line is to be transferred. This is done by a civil servant who has a set of keys with a number of numeric keys available has, when actuated, the corresponding lines are identified by the numeric keys. When many female officers use a limited number of storage and pulse generators must, a control circuit is usually provided via which a free memory and pulse generator connected to the individual key sets at the various operator stations and various other control operations can be performed. It used to be used in the memory and impulse generators of the Key transmitter mostly relay and step selector for storing the digits and for counting the Impulses. Lately they are in the wake of advances the electronic circuit technology, however, also electronic key transmitters on various occasions

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have been created in which capacitors, neon tubes or electron tubes to store the Digit information is used and electronic counting circuits for control and counting serve the number of pulses to be delivered. Examples of such known circuits are in U.S. Patents 2561722, 2570279, 2,576,099 and 2,463,708.

The known memory circuits with capacitors have the shortcoming that the individual too stored information must be differentiated by different voltages and these voltages are subject to all fluctuations in the power supply and by dissipation to be influenced. Exact forwarding of stored information is therefore not guaranteed. The neon tube and electron tube circuits, on the other hand, require one high effort and also have the disadvantage that voltage changes are not always avoided can be and the stored information is not in all cases flawlessly on the electronic Counting circuit can be transmitted. A serious problem with capacitor or tube storage lies in the provision of an economical control device for the start-up the required impulse output, as special protective measures must be taken, in order to prevent the inductive effect of the relays used on the various circuits. This object is achieved according to the invention by a relay which has a number of Tubes in the counter tube circuit is common and immediately after ■ the setting of the counter tube circuit is operated to set the pulser circuit in motion.

Accordingly, in the electronic pulse generator according to the invention, the described Defects avoided and the explained object achieved by a circuit of such a design that the first digit stored in the digit memory circuit automatically immediately after Storage in the electronic counter tube circuit is counted that then automatically immediately after counting the first digit in the electronic counter tube circuit, a pulse generator circuit brought to response and thereby the first digit is given and that after submitting the first digit, the circuit is activated again, and each additional digit is saved Number consecutively in the electronic tube counter circuit immediately after the each preceding digit is counted and the pulse generator circuit automatically after each count a digit is made to respond again, so that all digits are released consecutively will.

The circuit is expediently made in such a way that a digit according to a specific code is placed on switching elements the memory circuit is stored and determined by the stored values Tubes of the counter tube circuit are excited and when these tubes are excited one in the working groups the tubes lying relay circuit is made to respond, if necessary via further relays, a pulse generator circuit for Brings response and thereby causes the tubes of the counting circuit to count the number of pulses count, and that through the tubes of the counting circuit after its response by one of the stored Number of pulses corresponding to the number of digits to respond to a circuit which stops the pulse generator circuit. According to this storage and counting principle, a key transmitter be built for ten digits, which requires little contact springs in the key set, Requires to mark the lines to the memory circuit. This is made possible, for example through the use of rectifiers connected to certain lines and buttons, and by a binary electronic counting circuit adapted to be up to 12 and not like usually counts to 16. In one embodiment of the invention, each line is sequentially subsequent actuation of the keys of the key set via the successive contacts a contact level of a rotary switch assigned to each line on a number of Individual capacitors placed in this way to store a number of digits, and each The designated line charges the associated capacitor accordingly. The charge on the capacitor connected to the first contact of the rotary switch level is connected via a corresponding Contact of a corresponding level of another rotary switch on the electronic Transferred counting circuit, so that there is a state given by the first digit in this. In the meantime the first rotary switch has moved on, so that a second digit on one with. connected to the second contacts of the rotary switch level Capacitor can be stored. Because the second contact of the second rotary switch is not connected to that capacitor until the first digit has been given and the first Rotary switch moves continuously, after each digit has been saved, the " individual bank contacts lying capacitors completely isolated, except when their charge is on the electronic counting circuit is passed on, and there is thus no possibility that the Capacitor charges are discharged and the device is no longer operated correctly. at Another embodiment of the invention are instead of capacitors on the contacts The rotary switch level tubes are provided by the designations on the button set lines be ignited.

The electronic counting circuit counts to 12, and each digit is counted as 12 in the counting circuit, minus the special number to be handed in. A pulse generator circuit is provided, which comes into action as soon as the digit is registered in the counting circuit, and transmits the impulses to the desired drive-in device and at the same time to the counting circuit, see above

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that the counting circuit continues to work until 12, whereupon the pulse is interrupted, so that only the correct number of pulses is emitted and the second rotary switch continues to move to the to register the next stored digit in the counting circuit.

By the measures according to the invention a largely trouble-free operation of an electronic Keypad ensured, so that a proper registration of information is made possible and errors are avoided, which are caused by fluctuations in the voltage and power supply devices have been caused so far. The equipment required and the manufacturing costs are also largely reduced. This is due, among other things, to the mentioned rectifier circuit, the one Reduction of the line effort made possible. The invention finally allows such Operation of the pulse generator that the stored pulses are only passed on after the Official has finished storing the digits. Further objects and features of the invention result from the following description in conjunction with the drawings, wherein the Various embodiments of the invention primarily for use in conjunction with telephone exchanges in telephone systems are intended.

In one embodiment according to the invention, capacitors for the registration of the Numerals are used as well as current tubes with glow cords for counting the pulses, while at the other embodiment, current torques with cold cathodes for registration and counting the impulses can be used. The hot cathode tubes generally respond when the Control grid voltage exceeds -1 or -2 volts with respect to the cathode.

Each of the two embodiments of the pulse generator can have a transmitter control circuit from a civil servant who intends to register the digits and submit them. In the first Embodiment, a signal is first recorded, which indicates in a manner known per se, that the pulse generator has been occupied. The officer can then specify which of the individual digits if you intend to dispense, press the appropriate keys. Through the one pressed by the officer Button, a corresponding line or several lines are seized by their button set make the first contacts of a rotary selector with four levels provided in the pulse generator, to charge one or more of a series of capacitors, each with the first Contact of each level of the voter is connected and corresponding to the respective key pressed being charged. As soon as the officer releases the button, the voter is on his next contact rotated further so that it is the next digit on a corresponding series of capacitors to proceed to register the following digits in the same way. After registering the required number of digits, the officer can use her disconnect button Press (not shown) to separate your set of buttons from the pulse generator. The second Embodiment according to the invention are instead of the registration by charging a Capacitor current torröhren with cold cathodes used in accordance with the Pressing a specific key can be ignited.

In any of the embodiments described are economical and accurate means intended for registration. By avoiding relays for registration and the associated costs in connection with the ongoing monitoring required achieved a remarkable saving. It is pointed out at this point that the Capacitors applied charges at each capacitor have the same value while In previous systems, the charge on the capacitor depends on the specific to registering digit changed. This latter procedure made a critical and accurate charge of the capacitors required, and it arose as a result, as the capacitor charges are influenced by changing charging voltages and other circuit conditions, often Disturbances in the company. With the present arrangement, the size of the load needs no distinction is made on each capacitor, rather it is only necessary to ensure that the charge is large enough to that associated with the respective capacitor Tube to respond ·. This condition can be easily implemented in the invention, as will be apparent from the following description results.

In both embodiments according to the invention, a binary electronic counting system is used, which can easily be stopped at the numerical value of 12. For this purpose, when a key is pressed, one or more lines from the key set are occupied, whereby these lines correspond to the number of 12 less than the value of the key pressed. This number is referred to as the complement of 12 in the following description. For purposes of illustration, it is assumed that four character lines extend from the key set. The line A has the value 1, the line B the value 2, the line C the value 4 and the line D the value 8, so that these lines correspond to the binary series 1, 2, 4, 8 ... The contacts of the key set are connected to lines A to D and to the rectifiers M and F in such a way that when a key is pressed, those lines are marked that never have a total value equal to 12 less the numerical value of the key pressed. When you press key 1, lines ^, B and D are assigned the total value 1 + 2 + 8 or 11. In the same way, when you press button ο, only line B is seized according to 2. This designation

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Responses are registered and cause certain corresponding tubes in the counting system to respond, which set the system to a value corresponding to the complement. As a result, the output of pulses will cease at the numerical value of 12 less the complement of the value of the pressed key, so that only a number of pulses corresponding to the number of the pressed key will be emitted.
Ίο As previously explained, the binary electronic counting system used in the present pulse generator works on the principle that counting is stopped at the numerical value of 12. The construction of the pulse generator could be simplified if one were to use a counting system which is stopped at the numerical value of 16, but this would make it necessary to mark lines corresponding to the value 16 less the numerical value of the key pressed, which is undesirable because of the considerable amount Increase in the number of contacts in the button set.

The counting system itself consists of four stages with electron tubes, the first being three stages each contain tubes interconnected in pairs. Each level responds once if the immediately preceding stage responds twice, so that it is necessary to address the last stage is that the previous stage twice,

3P the next stage four times and the first stage eight times responds, Each of the first three stages consists of an initially addressed tube and a counter-roar that was initially not addressed. To explain how this arrangement works it is assumed that a count of the value of 12 is to be performed. In the first count, the tube of the first stage, which is not addressed at first, becomes the response brought and deleted the tube that was already mentioned at the beginning. The next count will be this process reversed; however, the second tube brings the first when it goes out non-addressed counter tube of the second stage for addressing, which in turn is the addressed one Brings the tube of the second stage to extinction. The third count becomes the second Level 1 state reversed, and the fourth count reverses the third state of level 1, which in turn reverses the existing state of level 2 and thereby the initially deleted The tube responds again and the opposite tube goes out. The counter tube causes at its extinction the response of the counter tube of level 3 and brings the initially addressed Tube in the third stage to extinguish. The fifth count returns the fourth State from level 1 to, so that the initially addressed tube is now deleted and the counter tube is addressed. The sixth count reverses the fifth state of the first stage and the State of the second stage, in which it is at the end of the fourth count. The seventh Counting reverses the sixth state of the first Level around. The eighth count reverses the seventh state of the first stage, and thereby becomes the initially addressed tube of the second stage to respond and its counter tube to extinguish brought and further ignited the initially mentioned tube of the third stage and their counter tube deleted, which then brings the tube of the fourth stage to respond. This in the fourth. The last tube located in the 3rd stage and actuated at the count of 8 is now ready the trigger circuit of another tube, which is actuated at the count of 12. the Counting 9 reverses the eighth state of the first stage. The count of 10 returns to the ninth State of the first stage and the state of the second stage at the end of the eighth count prevails to. The eleventh count reverses the tenth state of level 1. The twelfth count reverses the eleventh state of stage 1 and effects also the reversal of the state of stage 2 which prevails at the end of the tenth count, and furthermore the reversal of the state of stage 3 at the end of the eighth count. The reversal of At this point in time, stage 3 causes their initially addressed tube to go out and that Addressing the associated counter tube. When the initially addressed tube goes out from step 3 the tube is now made to respond, its circuit when responding the tube in the fourth stage had been prepared during the count of 8. This At the count of 12, the tube now closes a circuit that ends the pulse output. ··

With this counting system, different features have to be considered. If only the tubes of the first three stages addressed at the beginning responded alone, the system will be on o, and it will then be able to count up to 12. In most cases, however, only ten pulses should be emitted over the line, and the counting system must therefore be set to a value of 2 or more. As a result, the lines occupied by a pressed key in the key set correspond to the value 12 less than the value of the pressed key. These designations can be registered or stored and then used to actuate the respective counter tubes ¹ in order to set the counting chain in motion. In the case of 'odd numbers, the initially addressed tube of the first stage is deleted, while its counter tube is made to respond. With even numbers the ratios are reversed. When counting 2 or a multiple of 2 with the exception of 4, 8 and 12, the counter tube of stage 2 is made to respond, while its initially addressed tube has not responded and the opposite ratios are present for the counts 4, 8 and 12. When counting from 4 to 8, the initially addressed tube from level 3 is deleted and its counter tube is activated. When counting from 8 to 12, this status is reversed from level 3 and the

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Stage 4 actuated, so that this one circuit for the tube to be actuated at the count of 12 prepared. Level 4 remains addressed from the count of 8 until the end of the count. At the count of 12 the state becomes the Step 3 reversed so that it now has the same status as when counting from 4 to 8. In accordance with this, the tube prepared with its circuit through stage 4 is made actuated and thereby each impulse being interrupted. It is thus clear that any reversal from Stage 1 is equivalent to a count. With everyone. Reversing from level 2, 2 is added to this value. At each reversal of level 3, 4 is added to the value and the actuation of Level 4 is equivalent to a value of 8. This actuation of the counter tubes in the first three stages or the tube in the fourth stage by marking corresponding lines from Button set Has the setting of the system to the additional value of the addressed counter tubes or the tube in the fourth stage. For example, to set a value of 9, the counter tube of level 1 made to respond and also actuated the stage 4 tube. Around. to reach the value of 11 will button 1 is pressed and the counter tubes of levels 1 and 2 and the tube speak level 4.

When assigning the pulse generator, the tubes mentioned at the beginning of the different levels of the counting system in the pulse generator to respond. after the Official has saved the desired number, each of the saved designations will be sent to the first contact of another rotary selector with four levels brought up, and from here they are used to operate one or more specific tubes corresponding to the marked Contact or contacts. In doing so, certain of the tubes mentioned at the beginning of the group ignited first is deleted and the counting system is set to a value as a result which corresponds to 12 less than the complement of the number of the key pressed. Short a circuit is then closed, which enables the impulses to be emitted via a line and supplies incoming pulses for the counting process. With each pulse there is a capacitor discharged and a current pulse is delivered to the counting circuit, and as the counting progresses this caused certain tubes to respond. The delivery of the impulses over the line is ended by the counting process at the point in time when the pressed by the officer Corresponding number of pulses has been sent. The second rotary selector with four levels are then switched to its next contact, namely to the contact which has been occupied in each case, so that now again pulses corresponding to the next number stored by the officer.

The arrangement is such that the officer can save several different groups of digits can, in other words, the officer can after storing one set of digits another Pulse generator occupy while the first pulse generator continues to work after the officer Saving has ended. For this purpose, the circuit is set up so that after setting all Digits of the desired number by the officer to press the disconnect button (not shown) and thereby the set of buttons of the civil servant in a manner known per se from the donor control circuit and from Pulse generator is disconnected. Meanwhile, the pulse generator keeps the control circuit in itself known way, until all digits have been delivered, whereupon the Impulssen.der from the encoder control circuit is separated and returned to the normal position. Although this feature is on. both Embodiments according to the invention is applicable, it is only referred to below in connection explained with the second embodiment.

In the drawings represents. .

Fig..ι a through to use the officer Set of buttons after the first. Embodiment of the invention; . ...

Fig. 2 shows a circuit arrangement with capacitors for the storage of digits according to the first embodiment of the invention;

Fig. 3 shows a counting circuit in connection with both embodiments of the invention can be used and is explained here in connection with the first embodiment; '

Figures 4, 5, 6 relate to the second embodiment of the invention and correspond to Figures 1 and 2, respectively or 3. ....

The first embodiment of the invention will be explained first. The pulse generator is assigned in the manner already mentioned, known per se, via a transmitter control circuit through which the line S shown in FIG. 2 is earthed and the excitation circuit of the relay 210 is closed. The relay 210 closes the contacts 211, 212 and 213 when it responds and opens the contacts 214 and 215. When the contact 211 closes, a holding circuit for the relay 210 is closed. The power supply is switched on by contact 212, the 4-wire of which is connected to the anodes and grids of tubes X, Y and Z, while the -40-volt line is connected to their cathodes, so that these tubes work . Contact 213 brings the relay. 310 in Fig. 3 to respond, via the circuit from earth, line 253, contact 386, the winding of the relay 310 to the battery. The relay 310 closes the contacts 311, 312, 31.3, 315 and 317 when responding. Der.Kontakt 312 connects the + line of the power supply via the upper winding of the relay 340 with the anodes of the. Tubes S-τ, S-2 and S-4; however, these tubes will not ignite because their grids are connected to the -50 volt line. Contact 311 closes a response circuit for relay 320 from earth, contact 396, contact 311,

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'Contact 343 and the winding of relay 320 to the battery. The relay 320 opens the contact 321

· '■' and closes contacts 322, 324, 326 and 328.

The relay 320 also opens the contact 320 ^ ,.

which has the task of controlling the encoder control circuit hold until all digits have been submitted.

Its working is in conjunction with the second embodiment of the invention will be explained. By closing the latter Contacts become the grids of the associated tubes for occupancy by the Keys to be operated in the officer's key set. prepared.

As soon as the officer is shown in a known manner that a pulse generator has been occupied, she now presses one of her number keys to charge or designate one or more capacitors that are connected to the first contact of the four levels RS-τ . Should both

ao. For example, the number 3 is stored, the officer presses button number 3 and thereby closes the circuit from the battery via the resistor RD, the line D to the second contact of the button 3, the line G, the winding of this relay 220 to earth and also the circuit of the battery through the resistor RA, the line ^, the first contact of the button 3, the line G and the winding of the relay 220 to earth. The battery connected to the resistor should have a voltage of -50 volts and that of capacitors C-1 through C-4. connected battery are substantially the same size. By closing the above-mentioned circuits, the capacitors Ci and C-4 are charged to a value of around -10 volts, which depends on the size of the resistors RD and RA and the resistance of the winding of the relay 220. The charge on the capacitors, although influenced by discharge, does not drop below a value of - ^ 40 volts, which is the minimum voltage for exciting the grid. associated tube represents. The resistors RA and RD are to be dimensioned small enough to ensure the response of the relay 220. The relay 220 responds and closes the contacts 221 and 222. By closing the contact

221 the circuit of the relay 230 is closed, which opens the contacts 231 to 234 when responding and thereby prevents the charges on the capacitors, for example C- 1 and C-4, from flowing away. When the contact closes

222 Mi is excited, which opens the contact M- 1 B and the contact Μ-τ Α closes. When the contact M-iA closes , the holding circuit of the relay 230 is closed. MI does not switch RS-I any further until the officer releases her button, thereby causing relay 220 to drop, and contact 222 opens. Mi then switches RS-1 to his next contact when he is de-energized, so that the officer can save another digit. Capacitors C-1 and C-4 apply an initial voltage of no less than -10 volts to the first contact of RS-2 A and RS-2 D , and this assignment is applied via lines 241 and 244 to the grid of the counter tube Si of the first stage or the fourth stage to the grid of the tube S-8 , so that these tubes respond now because their grid voltage has been increased from -: 50 volts to a value of no less than -40 volts. When the tubes S-τ and S-8 respond, the counting circuit is set to 9, so ¹ , so that three pulses can be emitted before the value of 12 is reached and the pulse is terminated. The flow of current into the anode circuit of these tubes energizes the top winding of relay 340 and this winding shorts itself through contact 341. A holding circuit for the lower winding of the relay 340 is now energized from the battery via the contact 342, the contact 311 and the contact 396 to earth. The relay 340 also opens the contacts 343 and 344 and closes the contact 345. The contact 343 breaks the circuit to the relay 320 when opened, and this drops out. Contact 345 prepares a circuit to pulse relays 350, 355, 360 when it closes. In the event of a drop, relay 320 closes contacts 321, 322, 325, 327 and 329. At contact 321, a circuit is closed to one of pulse relays 355, which will be described later. '

In the meantime, the response of the current gate Si causes the interruption of the initially addressed current gate X due to the coupling of its cathode circuits via the capacitance 303. When the tube S- 1 is ignited, its cathode potential increases from -40 to -10 volts. This feature applies to tubes X, Y, Z, S-2, SA, S-8 and GS in this embodiment of the invention. The germanium diode rectifier Ä-305 receives a bias voltage of -10 volts from the power supply on its opposite side and thus prevents the passage of current. The tube S-8 responds via the circuit with the contact 392 and energizes the relay 330, which closes the contact 331 and prepares the tube GS for further operation. As already mentioned, the contact 321 has closed the response circuit for the relay 355 from earth via the contact 372, the contact 345, the contact 321, the contact 351 and the winding of the relay 355 to the battery. The relay 355 closes the contact 356 for a temporary holding circuit and the contact 357 for the energization of the relay 360. The relay 360 closes the contact when responding

361 and thereby causes relay 350 to respond, which opens the circuit to relay 355, which in turn opens the circuit to relay 360 opens and: brings this relay to waste. The relay 360 has also opened the contact 363, and when it drops, it closes this contact again and gives an impulse via the line. It has also the contact 365 opened and the contact

362 is closed so that the capacitor 364 can be discharged. The resistors in series with the grids of the tubes have a high value compared to the common resistance in the

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- 50 volt power supply. As a result, the grid of tube X is maintained at a value of approximately -50 volts and prevents tube X from responding until capacitor 364, when discharged, increases the grid voltage of tube X to a positive value with respect to its cathode and thereby the Brings tube X to respond. Tube X responds and extinguishes tube .9-1. In this mode of operation, the cathode of the tube Si is brought to a value of + 20 volts and this causes the rectifier λ-305 to become conductive for a short time. During this short interval, when the rectifier becomes conductive, the control grid of tube S-2 jumps from -50 to -20 volts and tube S-2 thereby becomes conductive. The tube S-2 extinguishes when responding, the tube Y due to the coupling of its cathode circuits via the capacitance C-306. The rectifier -R-307 prevents the passage of current from the cathode of the tube S-2, since both sides of the rectifier are at about

- 10 volts are biased. The count is with it advanced from 9 to 10.

The impulse circuit will now be considered for a moment, and it is recalled in this context that the relay 360 closed the contact 361 when responding and thereby caused the relay 350 to respond, which in turn opened the circuit to the relay 355 has, and this relay opens the circuit to the relay 360, the relay 350 is brought to the dropout and the relay 355 caused to respond again, then the relay 360 responds, and the process explained runs again over the various contacts. When discharging at this point in time, the capacitor 364 causes the tube Si to respond in the same way as it actuated the tube X during the previous pulse. When the tube Si responds, the tube X goes out and the count advances to 11. The pulse relays respond again while repeating their mode of operation, and when the capacitor 364 is discharged when the relay 360 responds for the third time, the tube X now operates, which in turn extinguishes the tube Si. Simultaneously with this, the cathode potential at the tube S-τ is increased and the rectifier A-305 is thereby made conductive, so that the grid voltage of the tube Y is increased to a sufficiently positive value and the tube Y is made to respond in the same way as the tube S-2 had been operated. Tube Y extinguishes tube S-2 when it responds, and at the same time the cathode potential of tube S-2 increases from its operating value of about -10 volts to a value of the order of +20 volts, so that rectifier R-307 becomes conductive in the same way as the rectifier i? -3O5 and the tube S-4 responds in the same way as before the tube S-2. The tube S-4 extinguishes when responding to the tube Z due to the coupling of its cathode circuits via the capacitance 309. The cathode of the tube Z jumps to a positive value when extinguishing, so that current can flow through the rectifier R-348 and the tube GS in in the same way as before the tube S-2 is operated. Tube GS cannot respond before tube S-8 has responded, which only happens when the count has reached 8. The tube GS actuates the relay 370 when responding, and this opens the contact 372 and closes the contact 371. The contact 372 interrupts the circuit to the pulse relays when opened and these stop working at the end of the third pulse or at the count of 12 . The response circuit of relay 380 is closed at contact 371. The relay 380 closes the contacts 381, 382, 384, 387, 388, 389, 390 and 391 when responding and opens the contacts 383, 385, 386, 392 and 394. The contacts 387, 388, 389 and 390 bridge the when closing Capacitors CI through C-4 and remove the charge on these capacitors. Contact 394 opens the anode circuits of all counting tubes, and all addressed tubes are cleared. When contact 386 opens, relay 310 drops out, and another point in the anode power supply circuit of tubes Si, S-2 and S-4 is opened. At contact 392 another point in the anode circuit of tube S-8 is opened and the circuit to relay 330 is interrupted, so that relay 330 drops out and contact 331 releases. The tube GS continues to work, however, since when the relay 380 responded, the contact 381 was closed and a replacement anode circuit was thereby provided before the contact 331 opened. When relay 310 drops out, relay 340 also drops out and closes contact 344, and this also applies the anode power supply to tube S-8 through relay 395. However, tube S-8 cannot be ignited because contact 394 has been opened, and relay 395 now does not respond, since during this time relay 340 has dropped out and tube S-8 has not been actuated. Relay 380 connects the grid of tube S-8 to a time delay circuit when contacts 384 and 382 are closed. The capacitor 399 is charged via the variable resistor 319, and in the process the voltage on the grid of the tube S-8 rises to a value which is determined by the required length of the pause between the digits. As soon as the charging of the capacitor 399 has progressed sufficiently, the tube S-8 responds and causes the relay 395 to respond. The relay 395 opens the contacts 396 and 398 and closes the contact 397. When the contact 398 opens, the tube GS is extinguished, and the relay 370 drops out, and this causes the relay 380 to drop out. At the contact 387 the The excitation circuit for the drive magnet M-2 of the three-way selector RS-2 is closed from earth via the contact 397, the line 251 and the magnet M-2 to the battery. When relay 380 drops out, contact 391 opens,

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and contact 392 is closed so that the anode circuit of tube S-8 is broken and that tube is extinguished. When the anode circuit of the tube S-8 is interrupted, the relay 395 drops out and opens the contact 397, whereby the drive magnet M-2 is triggered and now, when it is de-energized, the rotary selector RS-2 switches to its second contact, so that the pulse generator can now emit pulses corresponding to the characters that have been stored on the capacitors connected to the second contacts of the four levels of the selector RS-1.

In the second embodiment of the invention, cold cathode tubes are used for all processes used for both storage and counting. It will a set of buttons provided with the earth connected directly to the officer's buttons is used in place of the feed via a

Relay according to the first embodiment. The character lines are the same as those of the first embodiment. The pulse generator is assigned in a corresponding manner as in the first embodiment, and the relay 5 ro in FIG. 5 is actuated in the same way as the relay 210 in the previous embodiment. The relay 510 turns on the power supply when responded, thereby causing the tubes X ', Y' and Tf to respond. All of the tubes used in this second embodiment respond as soon as the grid is brought to a positive value of approximately 85 volts with respect to the cathode, and during this process the cathode has a voltage of about -75 volts relative to the anode. Since the anode voltage is approximately 50 volts positive, the cathode will be approximately 25 volts negative when the tube is ignited.

As soon as the officer receives the signal in a manner known per se that the pulse generator has been occupied, she presses the key corresponding to the digit in question that she intends to store, for example key 9. When key 9 is pressed, the earth is connected to the lines A and B 'are applied which, corresponding to lines A and B of the first embodiment, denote the complement of FIG. 12, and the circuit of relay 520 is closed, which closes contact 521 and energizes solenoid Mi' of rotary selector RS-τ ' . The rotary selector RS-i ' is designed in the same way as the rotary selector RS-i, and the ground potential on the lines ^' and B ' is via the first contacts of RS-τ A' and RS-τ B 'of the rotary selector RS-1 'brought up to the grid of the tubes GA or GB , so that these tubes are made to respond. When these tubes respond, their cathode voltage rises to a value of - 25 volts.

As soon as the relay 510 responds in the manner previously described, ground potential is applied to the line 353, and the relay 610 responds in the same way as the relay 310. The relay 610 closes when responds corresponding contacts as the relay 310, and this is Relay 620 triggered in the same way as relay 320 and connects the anode power supply to tubes S-i ', S-2', S-4 ' and S-8 ". The relay 620 opens the contact 620 A (corresponding to the contact 320 A of the previous embodiment), and this removes the earth from the holding line in order to achieve a delayed drop in the relay located in the GebersteuerstiOtnkreis and with the holding line νεΛμηαεηεη relay, in this case and Point in time, however, for no other purpose, and the contact 620 ^ is through another. Grid held addressed because the officer has not yet pressed her disconnect button. When responding, the relay 620 connects the grids of the tubes Si ' to S-8' with the first contact of the various contact paths of the rotary selector RS-2 ', and the grid voltage of the tubes 6 "-1' and S-2 'increases in the process a value of approximately -25 volts, so that these tubes are made to respond. In the meantime, of course, the officer may have released her number key, whereby the relay 520 is triggered one after the other, the contact 521 opens, the magnet M-1 ' is de-energized and switches the selector RS-i ' to its next contact so that she can store another digit. After the officer has finished storing the digits, she can press her disconnect button shown) in the encoder control circuit; however, this relay is initially still activated, namely via the earth at contact 620 ^. The contact 620 ^ 4 is only open for a short period of time, as the Relay 620 drops out briefly when relay 640 is actuated. This period of time is not long enough to cause the delay relay to drop out, and the transmitter control circuit is consequently held until all digits have been delivered.

When the tube Si ' is ignited, the tube X' is extinguished, and when the tube S-2 'is ignited, the tube Y ' is extinguished and the count is thereby set to the value 3 so that nine pulses are emitted before the count ends Value 12 is reached and the surge circuit is shut down. When the tubes Si ' and S-2' are ignited, the relay 640 responds in the same way as the relay 340, and this prepares the circuit for the actuation of the pulse relays 650, 655 and 660 and triggers the relay 620 to activate the To set impulses in motion. The surge circuit operates in the manner previously described, closing contact 662 to discharge capacitor 664 and raise the grid voltage of tube X ' from -125 volts to ground and ignite tube X'. When it is ignited, the tube X ' extinguishes the tube SV due to the capacitive coupling of its cathode circuits. When the tube 6 * - 1 'is erased due to the increase in its cathode potential, the grid voltage of the tube Y', and increases

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this ignites and extinguishes the tube S-2 ''. When the tube S-2 ' is extinguished, the grid voltage of the tube S-4' increases and this is caused to ignite, extinguishing the tube Z '. The counting advances from 3 to 4, and the next timing relay 660 closes contact 662, capacitor 664 is discharged again, then tube Si 'is made to respond and it clears tube X'. This increases the count to 5, which is equivalent to delivering two pulses over the line at contact 663. With the next pulse, the tube X ' is actuated in response to the discharge of the capacitor 664, then the tube S-i' goes out, the tube S-2 ' responds to this, and this now clears the tube Y', so that the count increased to 6. At the count of 7 corresponding to the fourth pulse, the discharge of the capacitor 664 actuates the tube Si ' and the tube X' is extinguished. The fifth pulse, corresponding to the count of 8, results from the response of the tube X ', which thereupon clears the tube Si' and causes the tube Y ' to respond. When responding, the tube Y ' extinguishes the tube S-2' and actuates the tube Z '. When responding, the tube Z 'extinguishes the tube S-4' and causes the tube S-8 ' to respond. When the tube SW responds , the grid voltage of the tube GS rises to a value somewhat below the ignition point, this tube being prepared for the response in the manner described below. The count now advances to 9 corresponding to the sixth pulse and, in response to the discharge of capacitor 664, tube S-i ' is activated and tube X' is extinguished. At the count 10 corresponding to the seventh pulse, the capacitor 664 is discharged again and the tubes X ' and S-2' respond. The tube S-2 ', when responding, extinguishes the tube Y'. At the count of 11 corresponding to the eighth pulse, the tube Si ' responds and the tube X' is extinguished. At the count of 12 corresponding to the ninth pulse, tube X 'is made to respond again, tube Si' is extinguished again, and tube Y ' is again activated. The tube Y ' now extinguishes when responding to the tube S-2' and causes the tube S-4 ' to respond, which extinguishes the tube Z'. Simultaneously with the deletion of the tube Z ', the grid voltage of the tube GS' is increased. so that the tube GS ' responds and causes the relay 670 to respond in a manner corresponding to that of the relay 370. Relay 670 actuates relay 680 when responding in the same way as relay 380. Relay 680 when responding connects the +50 volt supply voltage to the cathode of the storage tubes via contacts 687 to 690, so that all respondents The tubes go out. Contact 694, when opened, breaks the anode circuits of all counting tubes and these are deionized. At contact 686, the circuit to relay 610 is opened, so that it drops out and then the circuit to relay 620 opens, which also drops out. When it drops out, relay 610 opens another point in the anode circuit of tubes S-1 ', S-2', S-4 ' and S-8', namely at contact 612. At contact., 681 the + 25- Volt power supply is connected to the anode of tube GP ' and at contact 683 the -125 volt voltage is removed from the grid of tube GP'. Capacitor 696 is charged from the +25 volt power supply to a value determined by the required length of the pause between digits and, once the voltage on capacitor 696 has reached the ignition voltage of tube GP ' , the tube speaks GP ' and also causes the relay 690, which is switched on in its anode circuit, to respond.

When it responds, the relay 690 applies earth to the switching magnet M-2 'of the rotary selector RS-2' and excites it in the same way as the magnet M-2. of the rotary selector RS-2. When the contact 691 is opened, the anode circuit of the tube GS 'is interrupted and this tube is thereby extinguished, the relay 670 being released, which in turn causes the relay 680 to be released. Relay 680 opens contact 681 when it drops out, breaks the anode circuit of tube GP ' and disconnects the power supply from tubes X', Y ' and Z'. When the tube GP 'goes out , the relay 690 is made to drop out, and this then interrupts the circuit to the magnet M-2' of the rotary selector RS-2 '. The magnet M-2 'of the rotary selector RS-2' is now de-energized and, when de-energized, switches the dial to its next contact so that the process can be repeated for the next number to be stored.

After all digits have been delivered, the relay 680 drops out, the relay 610 responds again and prepares the circuit for the relay 620, which responds again when the relay 690 drops out. The relay 620 opens when responding to the contact 620 A. In the event that the officer does not save as many digits as contacts are provided on the rotary selectors, or she wishes to separate her key set from the transmitter, she can press her disconnect key. Here, the retaining earth is removed from the drop-out delayed relay provided in the transmitter control circuit in the manner described. This relay does not drop out if the relay 640 is actuated by one of the counter tubes, since the relay 620 is triggered when the relay 640 responds before the delay relay can drop out. However, if no further digits have been saved or the rotary selector in. its rest position has been switched back, the relay 640 is not made to respond, and the relay 620 remains addressed, so that this causes the delay relay to drop out, which then separates the control circuit from the pulse generator, which is known per se, whereupon the relay finally 510 is brought to waste. The relay 510 also causes the when it drops

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Relay 6io and 620 drop out. Relay 510

. 'also closes replacement switching -.' ■ '"circuits for the selectors RS-i' and RS-2 ' via their corresponding switch contact, which is closed outside the normal position, so that the selectors are switched back to their normal position.

Claims (15)

PATENT CLAIMS: 1. Pulse generator for telecommunication systems, in particular self-connecting switching systems, with a digit memory, through which the digits of a series of digits are saved consecutively and then counted in an electronic counter tube circuit, characterized by a circuit of such Training that the first digit stored in the digit memory circuit automatically counted immediately after storage in the electronic counter tube circuit .. ■ is that then automatically immediately after counting the first digit in the electrical - Frilly counter tube circuit made a pulse generator circuit respond and thereby the first digit is submitted and that after submitting the first digit, the circuit addressed again and each additional digit stored consecutively in the electronic counter tube circuit immediately after submitting the previous digit counted and the pulse generator circuit automatically after each count of a digit 'again is made to respond, so that all digits are delivered consecutively. 2. Pulse generator according to claim 1, characterized. characterized in that a digit is stored according to a certain code on switching elements (Ci to C4; GA to GD) of the memory circuit and certain tubes (Si to S-8; Si ' to S-8') of the counter tube circuit are excited by the stored values and when these tubes are excited, a relay circuit (340, 640) located in the working circuits of the tubes is made to respond, which, if necessary via further relays, causes a pulse generator circuit (350 to 361; 650 to 661) to respond and thereby causes the tubes of the counting circuit count the number of pulses, and that through the tubes of the counting circuit, after they have been addressed by one of the stored digits, .- speaking number of pulses a circuit (GS, GS ') is made to respond, which shuts down the pulse generator circuit. 3. Pulse generator according to claim 1 and 2, d ^; a-. characterized in that the switching elements of the memory circuit are the specific tubes ; - energize the counting circuit one after the other to to register a series of digits, and that the circuit is arranged so that each digit . . one after the other through the tubes is registered after the pulse generator circuit a . corresponding to the previously registered number. .Number of pulses -delivered. 4. Pulse generator according to claim 1 to 3, characterized in that the memory switching elements A series of capacitors (Ci to C 4) are provided for the excitation of the tubes is. 5. Pulse generator according to claim 1 to 3, characterized in that a series of electron tubes (GA to GD), in particular grid-controlled gas discharge tubes, is provided as memory switching elements for the excitation of the tubes. 6. Pulse generator according to one of claims 1 to 5, characterized in that selection devices (RS-x A to RS-i D; RS-τΆ to RS-i D ') are provided which have a voltage source with the memory switching elements. (C 1 - C4; GA-GD) for the excitation of the tubes and only allow certain of these memory switching elements to be charged in accordance with a selected predetermined code. 7. Pulse generator according to claim 6, characterized in that a step switch (RS-iA to RS-iD; RS-τΑ ' to RS-i D') is provided as the selection device, which has contacts via which a designation device (Fig. Ι and 4) can be connected in consecutive order with each multiple group of memory switching elements (C1-C4; GA-GD) in order to thereby charge certain memory elements within each of these multiple groups, that a further selection device (RS-2 A to RS-2 D; RS-2 Ä to RS-2 D ') is provided which connects the tubes of the counting circuit, after it has counted the number of pulses determined by the designation or charging of the storage elements of a multiple group, with the subsequent multiple group of storage elements. 8. Pulse generator according to one of claims 1 to 7, characterized in that an output circuit (364; 664) controlled by the pulse generator circuit (350 to 361; 650 to 661) is provided, via which further tubes (X, Y, Z; X '', Y ', Z') are excited in cooperation with the specific tubes (SI to S-8; S-1 ' to S-8') and count the number of pulses. no 9. Pulse generator according to one of claims 1 to 8, characterized in that some of the electron tubes (X, Y, Z, SI to S-8; X ', Y', Z ', Si' to S-8 ') are connected together in pairs are (X, Si , etc.) and each tube pair is assigned a 115th extinguishing device (303, 306, 309), with the aid of which the respectively excited tube of the tube pair is extinguished when the other tube of the pair is excited. 10; Pulse generator according to claim 9, characterized in that each of the tubes connected in pairs and the following pair of tubes is assigned a unidirectional circuit (.R305, R 307, R 347) and these unidirectional circuits * ^a 5 have such a bias voltage from a voltage ■ 609 657/157 A 19255 VIIIal21 a ³ source obtained that the passage of current is prevented when the associated tube has been energized, and the passage of current is enabled when the associated tube is extinguished, with the non-excited tube of the following pair of tubes to respond is brought and that to the same. ■ Deletes the other tube belonging to the tube pair. 11. Pulse generator according to claim 9 or 10, characterized in that a series-connected pair of resistors is connected between the control electrodes of each pair of tubes and a rectifier (R 305, R 307, R 347) and a coupling capacitor (304, 308, 346) are in series between the cathode of one tube of each tube pair and the connection of the resistor pair to the following tube pair, while a bias voltage source is connected to both sides of the coupling capacitor (304, 308, 346) via special resistors and the current is passed through the rectifier (I? 305, i? 3O7, R 347) blocks, whereby the circuit is made so that the voltage surge, which is generated when one tube of the tube pair is extinguished by the excitation of the opposing tube, is transmitted via the connected rectifier and coupling capacitor to the control electrodes of the subsequent tube pair and thereby causes the change in the state of the same. 12. Pulse generator according to one of claims 1 to 11, characterized in that a digit switching device, in particular a Numeric keypad set is provided, which corresponds to the individual digits on different Switching positions is adjustable, and a step switch that controls the number switching device via its contacts connects to the memory elements by setting the digit switching device to a certain position to store a first digit that the memory elements are connected to the counter tube circuit and this thereby into one of the first stored digit corresponding position is set, that then the pulse generator circuit responds when the counter tube circuit is working and on a certain Adjustment advances by the number of pulses corresponding to the stored digit to count, and that finally the step switch after registering the first Digit is advanced to enable the registration of a second digit. 13. Pulse generator according to one of claims 1 to 12, characterized in that different groups of Capacitors are provided and each capacitor is connected to a different contact of the Step switch is connected and certain capacitors of the Capacitor groups are charged when the digit switches are operated one after the other and this enables the storage of a series of digits. 14. Pulse generator according to one of claims 1 to 12, characterized in that different groups of Electron tubes are provided and each tube with a different contact of the step so holder is connected and certain tubes of the tube groups via an excitation circuit are excited when the numeric switches are operated one after the other and thereby the storage of a series of digits is made possible. 15. Pulse generator according to one of the claims 1 de, r to 14, characterized in that a second step switch is provided, which on the Counting circuit responds when it reaches a predetermined position, and the counting circuit with the storage elements connects to the counting circuit with another on the To bring memory elements stored digit in relation. Considered publications:
U.S. Patent Nos. 2,463,708, 2,570,279, 561,722, 2,576,099. 1 sheet of drawings