DE1936439C3 - Ralais memory - Google Patents

Description

The invention relates to a relay memory encoded in an "m out of n" code with "" "memory relay individual Incentive lines and one of all storage relays each via a holding contact of the same

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When the switching status of the test relay changes, the occupancy line in the sense of the deletion of the memory content disconnects and when responding again of the test relay due to the deletion

«Changed statement of the code monitoring facility the one given by the "m" memory signals Spoke content fixed.

It is to be regarded as essential for the invention, that the "m aus /!"

»5 henen switching means active in the transfer process, d. H. the process of replacing an existing - no longer required - memory content new memory information, intervene. The additional circuit effort, namely the contact of the test relay, is conceivably low, especially due to the fact that there is generally an unoccupied Contact of the test relay can be used for this.

The period of time for the transfer is very long

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30th

e each one holding contact dersel p

assigned occupancy line as well as with a one 35 small, as there are no delay times due to external control püfli bifld CdÜbhi tion of the relay memory in the sense of a deletion

of the existing memory content, but the deletion during the actual storage the new information inevitably goes on.

The invention is described using an exemplary embodiment that has one in a register of a Telephone switching system represents the digit memory provided by a central facility, z. B. a marker is controlled.

The relay memory shown in the figure comprises the memory relays 51 to 55, which are in the stimulus lines all to ALS . The incentive lines al 1 to al S serve both as input and output lines and indicate the

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Code monitoring device influencing test relays, in the contacts of all storage relays are linked according to the code.

Relay memories that work in an "m off" "code, are often used when the need for relays for each relay memory or the need incentive lines should be kept as small as possible. A field of application in which such relay memory are used relatively frequently, for example, telecommunications technology, in particular the telephone exchange technology.

Since in an "m from" code except for transpositions (interchanging two elements) all Feel

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Error due to the difference in the number of upstream 50 switching relay A controlled connection contacts α .

1 bi 55 id dbi about ih

existing signals can be easily recognized compared to the value »m«, such relay memories are provided especially in those cases in which incorrect storage caused serious disruptions k i

The storage relays 51 to 55 are connected via their contacts ill to j51 to the occupancy line bl via the decoupling diodes DIl to D 51. The incentive lines al 1 to al S are also available

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can work with a code monitoring device. 55 through the contacts sl2 to 5 52 and the decoupling. It is already known to connect such a code transfer diodes D12 to D 52 to the interrogation line hiih h abl , aa which at the time of a disconnection

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to implement monitoring device by a contact arrangement in the contacts of all storage relays are arranged so that a positive statement, d. H. e.g. passage through the contact arrangement, is only given if "m" of "" "relays of the relay memory are energized. In principle it is considered So such a code monitoring device

direction from parallel to each other

branches with "m" contacts each. In practice, however, such a contact effort is avoided, since such a contact arrangement ^ is known with the help of g
question earth potential is applied, which is evaluated via the stimulus lines all to a / 5 ·.!.

The code monitoring device CCE consists of contacts of the spokes clais, it being evident from the contact arrangement that there is only passage through the code monitoring device CÜE if exactly two of the storage relays 51

t> 5 to 5 5 are in the excited state. The relay memory shown works accordingly in a »2 out of 5« code. For example, if the saved Information is such that the

Memory relay Sl and S 5 are excited and line up on incentive lines all and al 4 new memory signals, the re-storage takes place as follows:

The central part of the telephone switching system connected to the stimulus lines al 1 to al 5, for example a marker, excites the control relay SR via the marker contact mk. As a result of the subsequent excitation of the connection relay A via the contact sr of the control relay SR , the connection contacts α are actuated. The relays S 2 and S4 are then energized and actuate the contacts si and the conact s4 in the code monitoring device CVE , so that there is no longer any passage through the code monitoring device CÜE. The test relay P then drops out and disconnects the supply line bl , in which, in addition to the contact ρ of the test relay P , the reservation contact c, which closes when the register is assigned, is located. The originally energized storage relays Sl and SS are then de-energized, while the storage relays Sl and S 4 remain energized due to the earth potential applied to the stimulus lines α 12 and α 14. In the code monitoring device CUE , only the contacts si and the contact s4 are now actuated, so that the code monitoring device COE results in a circuit: i4-i5- si - s3 - si -ground.

ίο The test relay P then responds and creates a holding circuit for the storage relay S1 , S4 via its contact ρ located in the occupancy line bl , so that the connection contacts α can return to their rest position.

Overall, the invention makes it possible, when restoring the relay memory, due to the use of the monitoring device for this task on external control processes for the deletion of existing ones Refrain from information.

1 sheet of drawings

Claims (1)

Patent claim · Patent claim. Relay memory encoded in an "m out" code with """individual stimulus lines for each memory relay and an occupancy line assigned to all memory relays via a respective holding contact, as well as with a code monitoring device that influences a test clearance and in which the contacts of all memory relays ic are linked to one another in accordance with the code, thereby geke η η ζ calibrate η et that a test relay contact (P) is inserted into the occupancy line 'AJ), which when there is new storage space (l) fd of BOOLE's algebra easily into less complex Contact arrangements with the same logical behavior can be converted. The object of the invention consists in the switching mutel required for the "m from" monitoring, that is to say from the contacts of the storage relays; Codeüberwachungseinnchtung formed and the Prufrelais f _ur a m with respect to the circuit complexity and the benotigte switching time optimal To exploit memory operation. According to the invention, this is achieved in that a test relay contact is inserted into the occupancy line, which, when new memory signals are present on "m", causes stimulus lines due to the code monitoring device thus caused by the misunderstanding (P) is inserted, the gru when new memory is available security signals to "m" incentive lines (al) due to the code monitoring device being activated. d ie di f Vi t Change of the switching state of the test relay die the change in the switching state of the test relay (P ) caused by the vet tuning of the code monitoring device (CÜE) caused by this disconnects the occupancy line (bl) in the sense of the deletion of the memory content and, when the test relay (P) responds again, on the basis of the changed message from the deletion Code monitoring device (CÜE) fixes the memory content specified by the "m" memory signals.