DE1274188B - Circuit arrangement for serial-parallel conversion of coded signals, preferably teletype signals - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY*

GERMAN ".

PATENT OFFICE

ÄJSLEGESCHRIFT

InI Cl .:

H03k

German KL: 21 al -36/20

Number: 1274188. ' \ -., . ■., ■ .. ■.

File number: P 12 74.188.7-31 (V26977)

Filing Date: October 16, 1964

Opening day: August 1st, 1968

The invention relates to a circuit arrangement for the serial-parallel conversion of coded signals, preferably telex signals.

Circuit arrangements are generally used to convert characters shown in series used, which consist of a counter that counts the sequence of steps of the character shown and in parallel therewith has storage elements which are activated by the steps of the counter so that each memory element has a character saves.

From the German patent specification 963 615 a transistor counting circuit is known in which the individual Trigger circuit units are coupled to one another via diodes. This circuit is only suitable for counting pulses. A series-parallel conversion of delivered signals is not possible.

There are already circuit arrangements known, which on the principle of a shift register Carry out serial-parallel or parallel-serial conversion of so Zieichen, A shift register consists of its simplest form consists of a linear array of memory cells, each having a binary value Can be kept for a longer period of time (e.g. flip-flops, ferrite cores, relays, glow triodes). For the temporary storage of a value and for the input and output of the series or The characters available in parallel are provided in the main and intermediate memory.

As in all currently known circuit arrangements Memory cells are provided in parallel with the input and output members, respectively Facilities due to the high cost of z. B. electronic components in relation to the overall system very expensive.

The invention is based on the cost of a circuit for series-parallel conversion to decrease significantly.

This object is achieved by the invention specified in claim 1.

The circuit arrangement according to the invention can reduce the cost of electronic components be limited to a minimum, making the overall system cheaper and for the technical Care a clear and less failure-prone circuit is available.

Advantageous further developments of the invention are described in the subclaims.

The invention is to be explained in more detail below using an exemplary embodiment. In the drawing shows

Circuit arrangement for
Serial-to-parallel conversion of coded
Signals, preferably teletype signals

Applicant:

VEB Booking Machine Plant Karl-Marx-Stadt, Karl-Marx-Stadt, Altchemnitzer Str. 41

Named as inventor:

Ernst Kutschbach,

Gerd Fassbender,

Hans-Eberhard Müller, Karl-Marx-Stadt

F i g. 1 a circuit arrangement especially for the serial-parallel conversion of telex characters,

Fig. 2 is a timing diagram of the circuit accordingly F i g. 1,

3 shows a circuit arrangement for series-parallel conversion for an arrangement in which a clock pulse sequence for control is also present,

Fig. 4 is a timing diagram of the circuit accordingly Fig. 3.

Functional description of the circuit arrangement
. according to FIG. 1 and the diagram F i g. 2

A polarized relay, which is equipped with a changeover contact E , which serves as an input contact for the circuit arrangement, serves to terminate the telex line, which is not shown. In the idle state, ie with current flowing in the teletyping line, the contact E is in the "0" position, ie the output line from E has the voltage state "0". In the start-up step, the teletype line is de-energized for 20 ms. During this time, contact E switches over, and »L« is at the input. Via a disjunction D 1, this voltage “L” reaches an inverter N1 and from there to an inverter N 2 and gives the voltage state “L” to the control input of a multivibrator MV. This state of tension reaches Dl via a conjunction Xl, so that there is a self-holding circuit via Nl, N 2, Kl and oil. The multivibrator has a build-up time that is half the duration of the start-up step. After 10 ms there is a short "! -" pulse at the output of the multivibrator. This pulse arrives at a flip-flop FFl via a conjunction Kill and flips with the

809 588/373

1 274 ISS: ^ r:. λ -ι;

Trailing edge of the pulse the flip-flop FFl into the junctionX6 / l from; sixth multivibrator pulse a position that switched on in der'Leitung to an amplifier Vl flip-flop FF 6. "L" is now applied via FF 6. The next pulse of the multivibrator put more "0" on the conjunction Xl, so that 20 ms later falls in the middle of the first character - the output of Kl via Dl, the negator Nl and step. If the first step of the drawing was live, 5 the inverter N2 on the input line of the Multiso, the contact E was at "0". The second multivibra vibrator »0« is placed. This means that the multivibrator impulse could not be blocked again at a conjunction K 1/2. A complete character becomes effective, and FFl remains energized in the activated character steps 1 and 2, 3 to 5 stand status / From FFl there was an "L" on a de-energized was taken over. In this time range conjunction K 2/1, and the multivibrator pulse io are now FFI and FF 2 in the position that is present at the now has the conjunction K2 / 1 to a flip input of the amplifier Vl and V2 "L". Since FlopFF2 arrives, the third to fifth character step switches with the "L" - "0" edge, the FFl ₁ so that the line to an amplifier 2 is at the input of the amplifiers V 3, V 4 and VS to "L" «Is switched. At the same time, the »0«. With the sixth multivibrator impulse, the other output of the FF 2 both the conjunction 15 FF 6 was switched on, and it is at the input of a Kl / 1 and the conjunction K 1/2 set to "0". Amplifier V6 "L" as an indicator that the full-through this circuit avoids that constant characters were taken over. The outputs of the first drawing step to switch the advertising FFI the amplifier Vl to VS may involve known the can. The third multivibrator impulse is in the encryption rails connected by magnets in the middle of the second step. If the second was 20, through which only the character step for the respective character was energized, then contact E is present . corresponding sensing element is switched on. Via the back to "0". Bäe "conjunction 2Γ2 / 2 is now via amplifier V6 , the discharge of the five output lines from E is blocked, and FF2 can be switched on key rails. After the third multivibrator pulse, this symbol would not be reversed into mechanical setting elements. As a conjunction K 3/1 but 25 a contact S1 is closed, and there was an »L« at the output of FF2, an »L« - »0« edge is generated via K3 / 1, which all »L« - "0" edge 'ärrTÄüsgang "takes effect and switches levels FFl to FF 6 switches back again. This means that a flip-flop FF 3 is in the position that an amplifier receives the circuit arrangement for the new _: Teletype V3 at the input "L". With the next character, the FF3 will now be "0" both to the 3 ° only in the. Start-up step placed over Dl, Nl and N2 of the functions _{KllX i} Kl /% _> K2ll and K2 / 2 , so that the multivibrator started to oscillate. The first both FFl and FF2 no longer switched 'multivibrator pulse again switches FFl on, which can be. If, for example, at the third character, the second multivibrator pulse switches to a currentless state depending on the step, then the condensation is present. Position of contact E does not close the FFl. "L". With φηα fourth multivibrator pulse 35 back, since here again the current-carrying state is present. The outcome of a conjunction K 3/2 should be on »L«, _Λ should be. Simultaneously with the second multivibrator pulse and via the trailing edge of the fourth multivibrator gate pulse, FF2 is switched on. At the third multivibrator pulse, FF3 is switched back again . Contact E is on "L". Impulses to a conjunction X 4/1 via-FF 3 still 40 FF2 is switched back via K 2/2. And FF 3, a "L". The trailing edge of the fourth multivibrator impulse., The fourth multivibrator pulse, while it simultaneously switches a flip-flop FF 4 to the position of the third character step, which again, de-energized that is to represent the "L" state at the input of an amplifier V 4 , switches FF 3 The fourth multivibrator pulse switches on FF4. This state is repeated until after "FF3 back because" the input was de-energized 45 the sixth multivibrator pulse FF 6 was switched on and so t the Köntakfii was on "L", and FF4 _t , .. and thus through the levels FF Ibis FF5 the character. The conjunctions K 1/1 are now adopted via FF4. The one in front of the straight off- Kifi, KVl). K2ß, K $ H and 2Γ3 / 2 blocked so that the rest of the characters Hegenden levels are no longer reversed by flip-flops FFIi, FF2, and FF 3 - conjunctions KV1 to K 4/2. in which can be switched. The fifth multivibrator - 50 corresponding steps blocked. After the first character impulse lies in the middle of the fourth character step. _ step FFl can no longer be switched. If there is again a de-energized state "" after the second step FFl is not and FF 2 the contact E is on »Im. Not over a conjunction £ 4/2. After the third step, the Stukann are now the fifth multivibrator impulse, the FF 4 fen FF Ibis FF 3 blocked, and switch back after the fourth time. At the same time, FF 4 was above FF 4 while the steps FF1 to FF 4 are blocked, the impulse still "X" on a conjunction K 5/1, ^ A block for the. Stage FF 5 is omitted, because FF 6 so that with the fifth multivibrator pulse a flip * "in this case the multivibrator is switched off. Flop FF 5 is switched on and at the input of an amplifier VS is always the voltage» L "exists. About preclude formation, as well as for felling that all five Zei-FF 5 x are now all conjunctions K will represent 1.1 to 60 chenschritte-energized, locked K4I2 so that the flip-flop FF4 FFl'bis ., ^ during each step a flip-flop can no longer be switched at least once. The sixth "is switched and this series continues-multivibrator pulse-Megt is set in the middle of the fifth, ie each time an FF is switched off again. If there is again a de-energized connection, the next one is switched on, if there was a connection before, then only FF1, then FF1 connection K 5/2 »L«. Are connected one after the other. The sixth multivibrator ... and FF 2 etc. are blocked, and during no character pulse FFS switches off, and since FF 5 is connected to a conjunction "" * step, one of the previous stages remains wirjunction iC6 / 1 »L <c, is controlled via a converse, since the respective possible

Claims (4)

5 6 Switching the conjunctions £ 1/1 to £ 4/2 by which the line to £ 4/3 is switched back to "L", block the previous stages. If the remote control was simultaneously given with the write signal from a teleprinter in the same period, the clock pulse present on the line S is operated manually via £ 5/1, then the state is true - a flip-flop FF 5 switched over, so that now which seems that the lock step is longer than 30 ms. 5 The output of FF 5, which leads to £ 5/2, is set to "0". However, the circuit arrangement remains as the multi-becomes. This means that all conjunctions vibrator are blocked during this period, generally blocked from £ 1/2 to £ 4/2. If it is in the fifth character state until the next start-up step sent step a pulse is again applied to E , FF 5 is det, which then switches the multivibrator on again so that the line is then switched on. There are similar ratios in the effect of £ 5/2 to "JL". At the same time, the same thing happened as a teleprinter, in which the £ 6/1 switched a flip-flop FF 6. The receive distributor is enabled by the start-up output of FF 6, which is used for conjunctions £ 1/3. The circuit arrangement itself is not sensitive until £ 5/2 leads, is now on the voltage state more sensitive to character distortion than electromecha- "L". There are now parallel to all output line converters, since up to approximately half of the 15 gen A1 to A 5, the characters corresponding to the input signal E can be corrupted without affecting the voltage states. This period of time is provided for which the character is incorrectly recognized by over the output. The sixth multivibrator applied via S, given only very narrow "L" pulses, clock pulse switches FF 6 back directly and is reached. at the same time over £ 1/1 to FFl, so that after the exit _,. ,,., ...,. ",,, 20 would give FFl again is in the position that the function _{description for the circuit of the output line to KV3 is >> 0} ". Thus, according to FIG. 3 and the diagram F1 g. 4 Circuit for the recording of the next character On a line S are ready from that moment on. If a clock pulse is now applied to E in the first character step, from which the input time calculated "L" pulse is applied, FFl is switched over to £ 1/2. If there is an input signal on a line and an »L« is applied to the input of £ 1/3, tungJSz. B. from five pulse steps, whereby only then at the same time is switched over via £ 2/1 FF2, so pulses are present when a signal from this step that the output line to £ 2/3 is on "0". Lieentspricht, a step must of S more given gene in the next two steps no input are than corresponds to the character input E, ie, pulses to E then are successively FF 3 and the sign is composed of five pulses to E and 3 ° FF 4 switched on, so that the outputs, which lead to £ 2/3 five possible impulses at E, so six Im- to £ 4/3 belong, were all set to "0", pulses on line S too. The sixth impulse At the same time, the conjunctions £ 1/2 to £ 3/2 are limited when the sign is locked in each case. The next input pulse from E is only set in the appropriate steps, the output is still effective at £ 4/2, so that FF 4 switched back output lines A 1 to A 5. Before the start of time, 35 is switched and above £ 5 / 1FF 5 is switched on. If there is a flip-flop FFl flipped to the position in the fifth step, again at E no impulse is applied to a pulse on the output line, the next pulse junction £ 1/3 "0" is applied over the clock. Is switched on in the first character FFl and the output is enabled. Since step at E there is no pulse, the level is only input pulses during the first and fourth FFl not switched. At that moment there were 40 steps, only the stages FF1 and the impulse present on the line S switched, but FF 4 was switched to the state that the output via the other output of the FF1 to £ 2/1 "L" output lines to £ 1/3 or £ 4/3 are on "L", a flip-flop FF 2 is in the position that the output line that goes to £ 2/3 is now by switching FF 6 , released to »0«, then only A 1 occurs and a switch is made to A 4. From this output line, the voltage state "L" is given, while the output its conjunction £ 1/2 is blocked, so that the following lines A 2, A 3 and A 5 are at "0". At the end of the impulses at E on FFl do not take effect. Output lines A 1 to ^ 4 5 is the output If in the second character step a "!," - Im signal is given by the trailing edge of the fifth character pulse via E. The trailing edge of the next clock pulse is switched back, so that the output line of 50 is switched back through the FF 6 and FF1 forward again - FF2 for the conjunction £ 2/3 to "L". is switched on in preparation. In the same period of time, the clock pulse S was set to a conjunction £ 3/1 between two character strings, and during this time there was FF 2 pulse spacing for the output of the still in the position that was £ 3/1 "L". The character »L« - »0« edge converted into parallel representation at the output of £ 3/1 switches on 55. Flip-flop FF3 in the position that the output line claims: to £ 3/3 is switched to »0«. In the third ^r Character step, FF3 will only then go back. switched when an impulse comes from E. Used in converting coded signals, preferably third character step no pulse given via E, 60 teletype signals, characterized by £ 4/1 with the next clock pulse a net that a chain of bistable electronic components Flip-flop FF 4 switched on, and the output stages (FFl to FF 6) both for storage for The value of £ 4/3 is thus set to "0". From this the conversion as well as to the counting of each Output line, all conjunctions of the respective information step are used, in £ 1/2 to £ 3/2 blocked, so that the flip-flops FFl 65 dem the bistable construction stages via logical verbs FF 3 cannot be switched any further. short circuits (£ 1/1 to £ 6/1) Follows in the fourth step on the line E clock pulses are controlled so that with the a pulse, FF 4 is switched over again, so that the respective step is the one in the counting direction ".. ,, next, level; to pay off this step - '. tes., switched on. and" the previous _{,; - s} d.-iu.die this one _; Step associated stage in response to the input signal via further encryption _f jpiüpfungsschaltungeri (Kl / Ibis K5 / 2) is off or switched off so that the upd .'nicht Speiche- "rung takes the jeweiugen.-step, and that the, last. τ switched-on stage blocks the control of all preceding 'Biustufen' (Fig. 1). 2. Circuit arrangement according to claim 1, characterized in that ungsschaltpngeri clock pulses are given to all logical links, which a multivibrator (MV) generates, which via a self-holding circuit (Nl, N2, Kl, Dl) from the initial step of the signal on and with the last character step is switched off again by the stage of the chain causing the output of the signal (Fig, I). 3. Circuit arrangement according to claim 1 and 2, characterized in that the clock pulses preferably off in relation to the period duration short pulses exist and 'that the.dieTakt- ■. pulse-generating multivibrator (MVj when switched on has an oscillation time which corresponds to half the pulse interval (Fig. 1) .. '
. 4. Circuit arrangement according to claim 1 for the serial ParaUelumwandlung of signals, which consist of separate pulses and a clock. Pulse sequence from which the pulses are derived, characterized in that the clock pulse sequence is only supplied to the logical Ver meanings circuits (Kl / 1 to K 6/1), from the outputs of which are bistable stages (FFl to FF 6) of the chain or are not switched off, and that the pulses representing the signal are only fed to the logic circuits (Kl / 2 to K 4/2), from the outputs of which the bistable stages (FF Ibis FF 4) are switched on or not switched on (Fig. 3 ). Considered publications:
German patent specification No. 963 615. For this purpose 2 sheets of drawings