DE1007818B - Circuit arrangement for call evaluators for optional calls from a large number of subscriber stations - Google Patents

Description

The subject of the invention is a call evaluator for the selective call of very many over one Connection path (e.g. via a wireless or wired telephone, telegraph or otherwise type of telecommunication channel) with multi-digit call numbers according to the decadic dialing system marked subscriber stations, each equipped with a single step selector, which is reset from the zero position with every single pulse train when you receive a call and by the position reached at the end of a series of impulses, provided that this position is with the calling number the subscriber station matches, the number of digits of the call number identifying relay (Decade relay) are operated.

Various call evaluators have already become known. So is (e.g. by the German Patent specification 667 253) an arrangement is known in which two selectors, a memory and tap selector, can be used for call evaluation. The memory selector has detent positions which are for the call number to be evaluated will be lost. This limits the number of possible call numbers. The pickup dialer must also rotate repeatedly with a multi-digit call number; he is therefore subject to great wear and tear. Another well-known arrangement (after the German Patent specification 709 543) uses only one selector for evaluating the calling numbers. However, this works according to the so-called addition method, in which the voter does not follow each Pulse series is returned to the zero position, but the one that has started with each new pulse series Circulation through the contact bank continues. The voter therefore only has one for all series of current impulses single round off. This solution also only allows a limited number of calling numbers. In the end a call evaluator is known (from the German patent specification 716 127) in which only a step-by-step mechanism, set again by each pulse line from the zero position, in the respectively reached Position switches on different decade relays one after the other, which switch on the call in the station. However, the step selector does not control the decade relay directly, but via cam contacts. For this reason, this arrangement, if there is not to be a risk, is wrong Decade relays are energized, limited to call numbers with a relatively small number of digits. Further the known arrangement requires two decade relays per decade.

In contrast, the invention wants to make do with as few decade relays as possible, namely only one single relay per digit of the calling number. Out-of-circuit arrangement for call evaluators for optional calls to a large number of people

Participant positions

Applicant:

Siegfried Eckert, Darmstadt, Am Kaiserschlag 41

Siegfried Eckert, Darmstadt, has been named as the inventor

the number of digits of the call number and thus also the number of evaluable call numbers should be practical be unlimited, even if you only have a cheap voter with a small one Step count used. Finally, it should be avoided that certain call numbers - with the same Digit value of their digits - have to be omitted for reasons of ambiguity. The invention achieved read by the fact that at each subscriber station in certain by the call number of this subscriber station Follow a single decade relay for each digit of the call number directly to the corresponding one Contacts of at least one contact bank of the step selector is connected.

In Figs. 1 and 2, circuit diagrams of such a call evaluator are given as exemplary embodiments, which mainly consists of a multi-armed, simple normal rotary selector with at least ten DrHi steps and a rest position, a set of nine control relays and a set of decade relays, the number of which depends on the number of digits used Digit system - here are z. B. eight-digit caller ID provided - is dependent.

In the exemplary embodiments of the circuit of the call evaluator shown schematically in FIGS. 1 and 2 according to the invention means:

K rotary magnet of the three or two-armed rotary selector with the switching arms S1 , S2, S3, k armature contact of the rotary magnet,

A input pulse relay of the circuit with contact σ 2,

B intermediate relay with dropout delay with contacts b 1 and b 3,

C like with contacts el, el and c3, Ό like with contact d2,

E test relay with contact el,

70? 508/158

F Rejection relay with contacts / 1, / 2, / 3, // Auxiliary relay (for the rotary magnet) with the

Contact h 2, X auxiliary relay (for odd-numbered decades) with contacts -tr21 and Jt; 22

Y auxiliary relay (for even-numbered decades) with the

Contacts y 1, y 2 and y 3, I to VII Decade relay with contacts (1

to T) ₂₁ and (1 to T) ₂₂ ,
VIII Decade relay with contacts 8 _lt 8 ₂ , 8 ₃ .

The call evaluation circuit according to Fig. 1 works in the following way:

If any subscriber, not shown, occupies the message transmission path, also not shown, from his intercom station in a manner not shown, the relay A is not detailed at all subscriber stations, i.e. also at the point shown in Fig. 1 with the call number 75 587 806 As shown, energizes and switches on a busy signal device, e.g. a busy lamp Bes, via relay B :

1. +, bl, 8 ₃ , Bes, -.

Due to the contacts 6 1 and 8 ₃ lying parallel to earth, the free test relay P is deprived of the opportunity to attract its armature if the subscriber at this point would pick up his receiver at this time. The call evaluator is thus blocked for use in the outgoing direction.

The given by the calling subscriber as an interruption of the occupancy status of dial pulses cause pulse-wise the fall and re-tightening the ί-relay armature., Which controls the circuits of the relays C and K of the rotary magnet with its contact α2:

2. +, al, 63, / 1, 8 ₂ , C, -

c 2, K

40

3. +, Ö.2, -

The selector K makes as many steps as interrupt pulses are given by the calling subscriber and received by the ^ relay.

After setting the rotary selector with the first pulse series (1st decade) and after the delayed release of relay C , a check is made in a current path in which the £ relay is located whether the decade relay I, which characterizes the 1st decade, is connected to the Selector switch arm S 1 reached rotary step contact is switched. If the switching arm 5 "1 at the subscriber station according to Fig. 1 is set to contact 7, the output of which leads to decade relay I, this relay attracts its armature:

4 +, 61, d 2, c 3, E, y3, Sl, (7), I (left winding), I ₂₁ , -,

and holds itself over a second winding:

5. +, 61, / 3, S ₁ , I (right winding), I ₂₁ , -.

Also the ß-relay, which works with a drop-out delay and is provided with a holding coil, attracts its anchor and remains after the fall through the C relay switched off via the D relay

6. +, 61, d2, S3 (contact segment), e2, E (left winding), -

in this state until the rotary selector K has moved to the starting position after the decade relay I has responded with the support of the auxiliary relay H:

7. +, 61, d2, S3 (contact segment), hl, c2, K, -;

8. +, 61, if 2, S3 (contact segment), k, H, -.

At the same time as the test procedure for decade relay I, the X relay was energized:

9. +, 61, (22, c3, χ 22, yl, X, -,

after the D relay has dropped out, it also maintains itself via its own switchover sequence contact χ 22:

10. +, 61, jit22, j'l, X, -.

With the first pulse of the second series of pulses, during which relays C and D are again energized, the F relay is energized:

11. +, 61, c4t, Jtr21, yl, Y, -,

whose circuit was prepared by the X relay. The F-relay picks up its armature and also holds itself:

12. +, 61, d2, y2 (folded), Y, -.

Contact vl causes the X relay to drop out; Another v contact (3/3) turns on the testing for the Decade away from the relay contact Sl, which is provided for receiving the odd decade pulse rubbing on the contact S2, which serves to hold the even-numbered rows decade pulse. If the rotary selector is set to a rotary step for the second series of pulses in accordance with the process already described, e.g. B. 5, is set, the output of which leads to the decade relay II at the subscriber station shown in Fig. 1, the test process is repeated in a similar way as after the first series of pulses. The decade relay II, the current path of _{which was prepared by relay I via contact I 22} , attracts its armature and holds itself via its own contact. The through the if relay in self-interrupting circuit to its rest position. The F-relay is de-energized again after the relay D has dropped out by moving the contact d2 back (see circuit no. 12) and prepares the current path for the X-relay again via its contact y 1. The mutual distribution of the incoming pulse series of odd-digit and even-digit decades ensures that the decade relays can only respond once with each pulse series, so that the decade relay chain is passed through with a sequence of identical digits (e.g. "5" for the 2nd and 3rd decade) of the call sign is absolutely prevented. The chain of decade relays could run from the second digit (5) to the third digit (5) and also to the fourth digit, if this should also be a "5", provided that two consecutive decade relays are connected to one and the same contact of a rotary selector contact track should. The compulsory change of the contact paths for successive places in connection with the preparatory contacts I ₂₁ , 2 ₂₁ ... prevents that all identical (here 5s) settings of different decades can be effective on the decade relays of any of the following places.

The state of the relays X and F after the second series of pulses is the same as that at the beginning of the first series of pulses. So become the following series of pulses

always alternately given via the contact arms S 1 and S2 of the rotary selector and in this way bring one decade relay after the other into the working position, provided that the switching arms of the rotary selector are set in the correct order specified with the call number at this subscriber station. If the last decade relay picks up - in the example given, decade relay VIII on the eight-digit call evaluator - it will hold itself:

13. +, bl, / 3, 8j, VIII (right winding), -,

and switches off the busy signal Bes _{with his 8 3} -contact and the call signal AL on . As soon as the hook switch HU is actuated when removing the handset, the free test relay P can pick up. The call status is established. To save power, relay VIII interrupts the power supply to all other decade relays, which then go into rest position.

If the rotary selector is selected by selecting one that does not belong to the subscriber microphone unit shown in Fig. 1 Call identifier set to a rotary step, the output of which does not correspond to the respectively prepared If the decade relay leads, the £ relay cannot pick up because no decade relay is connected to this step is. The relay F is thus excited via the return arm 53 of the rotary solenoid:

14. +, 61, dl, 53, el, / 2, F ₁ -,

30th

attracts and holds:

15. +, bl, / 2, F, -,

until the end of the conversation. The F relay interrupts the current path for the C relay with its contact / 1, so that none of the following series of pulses can be recorded by the call evaluator. In addition, those already mentioned in previous Pulse series switched on decade relay switched off by the / 3 contact and de-energized.

After dialing a number that does not affect the intercom, the call evaluator can only be released again after the connection has been released (due to the prolonged release of the communication path) via the i? The control and signal field is controlled with contact 8 ₃ .

Fig. 2 shows as an example schematically the circuit of a call evaluator according to the invention in a simplified form. A contact path of the rotary selector and the associated switching arm 51 as well as the relays X and Y required for switching to the two contact paths are omitted here. B. for the subscriber station "45 567 989" is the faulty next switch to several decade levels of decade relays, which because of the sequence of digits happen to be at the same rotary step output, z. B. in the particularly difficult case of a sequence of the same digits (z. B. 88 888 888), avoided that after the response of a decade "relay the response of the decade relay following in the series by suitable, from the first existing circuit created fault current conditions is prevented and the voltage of the node at the rotary step output is no longer sufficient to trigger the next decade relay of the next stage, which is also located on the same segment, if the digit is the same.

The call evaluator according to the invention is suitable for any number of participants Elongated lines or speeches share that are on the same wavelength via radio links individually distinguishable are to be achieved after the evaluation of given with the normal dial To be able to control impulse series while maintaining the telephone secrecy. By the great The call evaluator for decadic impulse method is more arbitrary in number of differentiation possibilities Number of digits capable of any motor vehicle in the motorway radio, e.g. B. also under his own police force Indicator to be able to call, so that a special distinguishing feature is superfluous and Difficulties can be avoided by using two labeling systems.

Claims (1)

Patent claims: 1. Circuit arrangement for call evaluators for the selective call of very many via one Connection path (e.g. via a wireless or wired telephone, telegraph or different type of telecommunication channel) with multi-digit call numbers after the decadic Voting system marked subscriber stations, each with a single step selector are equipped, which in the event of a call through each individual pulse series again from the Zero position is set and by the in each case reached at the end of a series of pulses Position, provided that this position corresponds to the calling number of the subscriber station that Relays identifying the number of digits (decade relays) are actuated thereby characterized in that at each subscriber station in by the call number of this subscriber station a single decade relay (I ... VIII) for each digit of the call number the corresponding contacts are connected to at least one contact bank of the step switch selector is. 2. Circuit arrangement according to claim 1, characterized in that the decade relay (I, III, V, VII), which contains the pulse series corresponding to the odd-numbered digits of the call number count, and the decade relays (II, IV, VI, VIII), which the even-numbered places count the impulse series corresponding to the call number to two different contact banks of the Are connected (Fig. 1). 3. Circuit arrangement according to claim 2, characterized in that the pulse series by means of a switchover contact (y3) alternately via a first peeling arm (Sl) of a multi-armed rotary selector and a first contact bank to the odd-numbered decade relay and via a second switching arm (S 2) and a second bank of contacts of the voter affect the even numbered decade relays. 4. Circuit arrangement according to claim 3, characterized in that the changeover contact (v3) is controlled by two relays (X, Y) working in interplay in such a way that the one relay (X) is switched on depending on the termination of a series of pulses and the circuit of the other relay (Y) prepared, which, in turn, switched on at the beginning of the following pulse series, the circuit of the first relay (X) interrupts again and, after the end of this series of impulses, the circuit of the first relay (X) is prepared again. 5. A circuit arrangement according to claim 1, characterized in that when the step selector is set to the first digit that does not match the own call identifier of a subscriber station, a previously set decade relay is triggered by a relay (F) that is effective in the non-agreement and an evaluation of the further following Pulse series is prevented. 6. Circuit arrangement according to one of claims 1 to 4, characterized in that according to The entire call number is recorded by the decade relay switched on by the last pulse series (VIII) the decade relays (I to VII) must be switched off. 7. Circuit arrangement according to claim 6, characterized in that the last switched tete Dekadenrelai's (VIII) holds itself and switches the call on in the selected subscriber station. 8. Circuit arrangement according to claims 1.5 and following, characterized in that both the even-numbered as well as the odd-numbered decade relays via the same contact bank of the Selector can be controlled and through suitable fault current conditions only the decade relay the next step responds, the following step, if necessary, to the same rotary step contact switched on decade relays of higher ordinal number but because of the reduced voltage No longer receiving sufficient response current at the node (Fig. 2). Considered publications:
German patent specifications No. 667 253,709 543, 716 127; Magazine "Frequency", 1951, issue 11/12, p. 313, 314 1 sheet of drawings © 709 508/158 4.57