DE2443523B2 - SYSTEM FOR TRANSFER OF INFORMATION - Google Patents

Description

disturbed monitoring absdmitt lying last Monitoring point is sent back and this 50 is used to automatically switch over the faulty

Pie invention relates to a connection to the over- the connection is initiated on a replacement channel, traguag of a fault message in a transmission The invention is based on the knowledge that a giiiigssysteni for information »« according to d «" ZeiimuUi system-specific connection with a very low plex principle according to claims 1 and 2 can be realized by additional effort. From it tent registration P 22 01 498.8. 55 there is also the main advantage of the invention

u »of the main application (corresponds to the DT-OS arrangement, which lies in the fact that the connection li #% iSt e, an arrangement for section-by-section,, ^ jäang ^ for fault reporting also in a vermas h- _ir $ | gJi || g: ^ with the manufacture of the

^^^ ltg ^ läei " Ig 'iiiejser arrangement weiränen vpn? ^^^ eftö | iiung, akolaütöma ^ sch, conditions comes w * Jmlm $ &''* 0ß £ - : t ^ / _? Pa ^^ passwordfe em ^ 'tfgilaien ·' ^ 'Sui furtherj · ;, a very important advantage of the inven- ^^^ P | jgnp || ^^ its for the section-wise ^ line over- ^ ungsgerp ^ len arrangement is that the to- ^ f M . ^ || ^ Un | ;; || tangering attracted säfzliche at the end of each over- ^ ldeverbiridung can be saved pt ^ ^ iBiW $ W ^ W ^^ ^;; P ^& wercferi: this nrÖits for bit errors or as an additional communication channel. ^^^^ ä ^ i ^^ M ^ uMhietiTeiiti the further route is available.

p ^^^ W ^ gesj ^ i '] ^ 6 ^ äeheti (^ h)' Bitedgs Rahmes- 6s An inexpensive further development of the he ^ nd »ingsgemä ~ ψ'Τ ^ φβκφηφ " rVSrdfen to the Übercr ¥? achangsgte! ien ϊξι ßss Aüoräöasg consists in the fact that the monitoring operations% y; S | gifni? frfeiert operations are designed in that logical delivery in such a way that for the identification ρ ^^ s ^ lpat ^ igeseiidet in the you were received. the connection led via the substitute caaal min -

of the additional monitoring irigß »or, Syn-i padur (? U is achieved that gesehaiteie connection emp » ii'krtbi)

preferred execution form of the

,, "" ,, the described arrangement is used by ■ dan FlJUerwachungsstellen in a PGM 30 system that . itonfte, sixth and seventh .Bi] l · des .. Äifeideworüi-als ä $ | field and flag bit sent on the send side Plrid monitored on the receiving side, these ', execution documents Requires very little additional effort compared to the order according to the Maüptpätent, since the framework and the Message word are monitored on the receiving side and ^ on the end side intervened in the frame password and message word will,

* Based on the exemplary embodiments shown in the drawing the invention is to be explained in more detail below. It shows

F i g. 1 the receiving part and

F i g. 2 the transmission part of a device according to the invention for the transmission of fault messages for a transmission device, each in a function circuit for a PCM 30 system.

In Fi g. 1 is the input for the incoming pulse signal with PE and the input for the Jp arriving from the previous monitoring section; the route cycle is denoted by TE. The two inputs W 8 # ng ^e PE and TE are connected to the two inputs of a first shift register SR 1, through the incoming pulse signals and thereby ν / n fashion, in the used PCM 30 system so ji weils eight bits removed can be. The inputs of a first layout logic RKL for the frame password and a second layout logic MWL for the message word are connected to the outputs of the individual stages of the first shift register SR 1. Bits 2, 3, 4, 6, 7 and 8 of the frame code word are taken from the shift register SRI by the first interpretation logic RKL VPTi ', cn and fed to the first connection of the synchronization monitoring SYNC. Bits 2, 5, 6 and 7 of the message word are taken from the first shift register SRI by the second distribution logic MWL. Bit 2 of the message word is fed to the second connection of the synch monitoring SYNC and bits S, 6 and 7 are fed to a feedback and address evaluation P * H ' . The clock pulses required for reading out the frame word and message word are sent from the first Takizentrale TZl to the two readout

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45

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Io iken delivered. The clock center TZl is with the egg; ■■ TE sang connected for the line cycle and generates the required cycles from the line cycle, an additional input of the first clock input terminal TZ1 is connected to the third connection of the synchronous monitoring 5 VC. A first clock monitoring Tt) Ϊ is connected to an additional output Uej er & icn clock center ΓΖ1, the output level Ip % of which assumes a high value in the event of a fault.

g, κ to the output of the first clock center TZl for § | $ s frame clock continues to be a third connection; el point connected #sdern over which the frame clock described in Fig Sendeteii 2 fed "ird%;. to a corresponding first connection

ipoint is the output of the first shift register, _ J | rei sügcsciilosssn. Ins Stcrur.gsiaU ,, for example, "with multiple incorrectly received frame password appear on the fourth terminal and the fifth presence | of the synchronous monitoring SYNC STATEMENTS high Älarmpegel .lambda..sub.i or B 1, the alarm level AX, the ηη one; additional terminal for a further steuefunßsäufgsbcn entnehnibar is also fed to the first input of a first NOR gate NORl. The second input of this NOR gate receives the second alarm level / Ii from the output of the first clock monitoring TVl, which can also be taken from an additional connection for further control tasks, Both alarm levels A1 and 4 2 are combined in the first NOR gate NORl to form the alarm criterion 4, 'which is fed to the second connection point bl for transmission to the transmission unit of the monitoring station, for transmission of the line clock arriving at the input TE to the transmission unit a fourth connection point dl is provided, which is connected to the second input TE .

The transmitting part of the monitoring parts designed according to the invention shown in FIG. 2 is connected to the corresponding connection points on the receiving side via a fifth connection point a1, a sixth connection point bl, a seventh connection point el and an eighth connection point dl.

The transmitting part of the monitoring station designed according to the invention is constructed analogously to the receiving part and contains a two shift register SRI with two logic units, a clock generator TG, a second clock center TZ 2, a gate network made up of the two AND gates ANDl and AND2, the NAND gate NANDl and the first OR gate ORl. The transmitting section also contains a second NOR gate NORZ, an exclusive OR gate EXOR 1, a scrambler SC, also known as a scrambler, a second clock monitoring TU 2 and a feedback and address input RAE.

The second shift register SRZ receives the output pulses of the first shift register SR 1 from the fifth connection point al . From the sixth connection point bl on the transmission side, the alarm criterion A becomes the first input of the first AND gate ANDl, via a manually operated switch U the first input of the second NOR gate NOR 2 and also fed to an input of a transmission logic RKS for reversing the fifth bit of the frame password. The alarm criterion A is also fed to the first input of a first NAND gate NAND 1 and the first input of a first OR gate OR 1 for switching to the clock generator TG 1 or the first clock center TZ1.

For this purpose, the frame clock of the first clock generator TZ1 is fed to the second input of the first AND gate ANDl from the seventh connection point el. To the second input of the first OR gate OR1, the output of the free running clock generator TG is connected, while the second input of the first NAND gate Nandl from the eighth connection point dl the transmission side of the received at TE route clock is rügeführt. The two inputs of the second AND gate ANDZ are connected to the output of the first NAND gate NAND 1 and the first ODEÄ gate OR I; the output of the second A »ND gate is connected to the input of the second clock center TZ 2. While in operation the Alann criterion A one

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4- '"* · has a high level and thus' bends over' the 'first AND - ^^ the, J ^ G & tutJiNDl der, frame clock and over, the first' pulse train. ^ V'vf ^^ / '"', ^, '',% - ^ \ s · - ·", * £ ■ NAND _e -Gatef r NANDl and the second AND gate ^ ₄ ', The Serideteil' (ier ^ according to the invention designed _c j = > ■ < ¹ ^ -SfANTiV Aer fitmctenfsilrt Her / second Takt7.entrale zu- / Ί üBerwacliungsstellc still contains as a replacement p ^ ls- ^

'«F' * £ uuuii" «now JUUi, ^ m UU uiu.iui ^ ii». Uv. ... ν »S generator ^ βη gcstp ucrfen ^ discarder ^ SC ^ the also

f η pl? 'rim * Bflnoi''/ lec fA i-jTmL-ri ^ niimc ι-yd / Hac prctA ^ A TOTi- ^ ' - (flls ' Scrambler ^ and ^ dem next to c ~~~~

- j t v. »™. , * _t , ^ M. »..W. "«, V .- ^ w »...., <- y ^ route cycle the ^ frame password cycle ^ and ■" · - ,,,, <■

'' ^ -jind ^ ffnk 'the ^ first OR gate ^ OÄl, so ^ that the / ^ message word clocks are added ^ and | the ^

f second clock centfale TZ 2 receives the clock pulses generated by the clock generator scrambling text at the second input of the second TG. To clock input io iNOR gate NOR2 gives off The scrambler is like this

"The second clock center TZl is also the clock executed that at the times at which the Raheingang the second shift register SÄ2, the clock password or the message word from the shift input of the encryptor SC and the output for register SRI is read out the second input path connected in parallel clock tO, the second of the second NOR gate NOR 2 is a high level of shift register SRI. contains at least eight rear is situated. this ensures that the transmitted

'' Interconnected stages, the inputs of which, in addition, the frame password and the message word are not scrambled and separately routed to the outside. With each of these, regardless of the level at the first input 1, inputs are one of the outputs of the transmission logic ÄKS of the second NOR gate NORl. The first input for the frame password and the transmission logic MWS of the second NOR gate NORl is connected via the ma for the message word. Due to the frame rate for the alarm criterion A or with a connection-controlled connection-controlled by the changeover switch U , which is to be actuated manually via the line of the second timing center TZ1, the frame password transmission logic fades out. The output of the second NOR gate NOR 2 RKS bits 2, 3, 4, 6, 7 and 8 of the frame identifier is with the first input of the word as a modulo-2 adder in its logical target state in the switched by the first exclusive -OR gate EXOR1 second shift register SÄ 2 passing pulses as connected, while its second input to the one. In the event of an alarm (low level of A) - the output of the second shift register SÄ 2 is also connected via the transmission logic RKS - the fifth bit is. When the changeover switch U is connected to ground or in the frame password to its logical target level, the second position of the changeover switch U is used in the fault-inverted state. Correspondingly, the two-iall (low level of the Aiafm-Kftierium) emits a message word clock to the th clock center TZ 2 , 30 scramble text via the second NOR gate WOÄ2 which is fed to the message word transmission logic MWS. routed to the first exclusive OR gate EXOR 1. This message word transmission logic MWS has three and one correspondingly scrambled useful additional inputs to which the outputs of the feedback signal are sent to the signal output. In the and address input RAE are connected. From the second position of the switch, the feedback and address input RAE are instead activated by bits 5, 6 and 7 of the message word through the second shift register SÄ % in the desired pulse including the newly inserted.! In the form of the message word transmission logic MWS , these bits pulse for the message word and the frame password, together with the bit 2 of the avoid word necessary for synchronizing from the first exclusive OR EXOR 1, also i η to the Sigaai output PO .

For this purpose 2 sheets of drawings

Claims (3)

tB ,. if at least ™ three times ¹ · '^. J, MMj ^ iM ^^ M ^ XFM ^ WWi: ^m ' ^{mtaamau mimin ö} '^{sp> n the} * # ^ 01 »^ #thisSystehi _; Required a separate service channel • ^ nen ~ Ü «ätfiüli * 1 & w ^ Fcrnle.tungsnetzes re-feeds the message bit and at the end of each, however, this indicates that the additional message monitoring section, the following overhead lines, must also be meshed and for this purpose the security control unit monitors this avoid bit, at least Mediation is also necessary so that, in the event of a fault, the monitoring station following the disturbed monitoring section, that is to say a relatively high expenditure overall, must be followed by the monitoring station. ,
At least one of the message bits is inversely to his. In the present invention, the task of sending back a low-cost monitoring point and connection is therefore set from the target state to the last patent in the signal path before the disruptive as a result of the older proposal after the main monitoring section for the purpose of communication between the last monitoring station in front of the disturbed section and the disturbed connection to a substitute channel of the section following the disturbed section. 30 monitoring station to be created. 2. Arrangement according to claim 1, characterized in that this object is achieved according to the invention indicates that the monitoring points are resolved in such a way that they are formed in accordance with the possibilities of the Aufausged are that to identify the occurrence and the recognition of transmission deadlines The connection routed by the substitute channel mines the transmission path into individual areas Another bit of the reporting signal in addition to the monitoring section with intervening transmitted monitoring or wachungsstellen is divided that each uber synchronization signal serves. wachungssiellc is designed so that it is in both 3. Arrangement according to claims 1 and % da transmission directions at the beginning of each overcharged that from uen monitoring section at least one bit of the additional washing points in a PCM 3u system the 40 Hch to the message signal transmitted via »fifth, sixth and seventh bit of the Message word monitoring or synchronization signal as a message bit as a message and identification bit is fed in again on the transmit side and is output and monitored on the receiving side at the end of each monitoring point, the following monitoring point cuts this Message bit monitors that, in the event of a fault, the over monitoring station at least one of the message bits inversely to its target state to that in the Signatweg before