DE1221680B - Electronic distributor - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. α .:

GlIc

HO3k

German class: 21 al -37/64

Number:
File number:
Registration date:
Display day:

S77992IXc / 21al
February 12, 1962
June 28, 1966

For evaluating pulse combinations, e.g. B. for serial-parallel conversion of telegraph characters, distributors are required that deliver pulses to a plurality of outputs one after the other. These Today, distributors are mostly carried out electronically. ·

To avoid incorrect evaluations, it is necessary that only one distributor outlet at a time a clock pulse occurs. This means that only one distribution stage is always a first and all the others Distribution stages must have a second of two possible states. An error occurred (Such an error exists, for example, if two distributor stages have the first state) be eliminated.

The electronic distributors are generally using multi-stage, ring-connected Built up shift registers, d. that is, the output of the last stage of the shift register in each case connected to the input of the first stage in each case. With a distributor of this type that has already been proposed is at the moment in which the first state from the last stage of the shift register in the first stage is returned, a clear pulse is given to all other stages of the shift register, which transfers these stages to the second state.

The invention also relates to an electronic device which can be incremented by means of clock pulses Distributor in the form of a shift register, in which in the target state one stage is a first and all the others Steps have a second of two possible layers. According to the invention, all stages also control With the exception of the last stage of this shift register, each one input of a coincidence gate off if they are in the second layer. The output pulse of the coincidence gate that occurs in this case then switches the first stage of the shift register when the next clock pulse occurs in the first layer.

Compared to the electronic distributor already mentioned, the distributor according to the present invention Invention much easier. It is also ensured that there is always a distribution stage in the first State. In the aforementioned distributor, however, it is possible that by a Errors all distribution stages are transferred to the second position without this faulty state being immediately can be recognized or corrected. Recognition and correction is with the mentioned Distributor in this case only by using an additional monitoring and correction circuit possible.

Electronic distributor

Applicant:

Siemens & Halske Aktiengesellschaft,
Berlin and Munich,
Munich 2, Wittelsbacherplatz 2

Named as inventor:

Hans Rudolph, Munich-Solln

Details of the invention are based on the advantageous embodiment shown in the drawing explained.

It is assumed that stage Kl are in the first position ("1") and all other stages Kl to K 6 are in the second position ("0"). In this case, a positive voltage occurs at the output terminal A 1, for example, while no voltage occurs at the output terminals A1 to Ad. With the next clock pulse supplied via the clock line T , the flip-flop Kl is switched to the "1" position via the prepared coincidence gate G3, while the flip-flop Kl is returned to the "0" position by the same clock pulse via the prepared coincidence gate Gl . So now at the output terminal Al a positive voltage occurs while no voltage occurs at all other output terminals. In the same way, the stages K 3, KA and KS change to the "1" position for the following clock pulses, while the previous stage is switched back to the "O" position. With the next clock pulse, the stage K 6 is switched to the "1" position and the stage KS is switched back to the "O" position in the manner already described. Now all inputs of the coincidence gate except for the clock input Gl are prepared, and the following clock pulse switches the stage Kl back to the "1" position, while at the same time stage K 6 is switched to the "O" position via the prepared coincidence gate GU will. The processes already described are now repeated.

As can be seen immediately, a faulty condition of the distributor is corrected in any case, since stage Kl is always switched to the "1" position if and only when stages Kl to KS are in the "Ck ^ position.

609 607/280

Claims (1)

Claim: Electronic distributor in the form of a shift register which can be incremented by clock pulses, in which in the desired state one stage has a first and all other stages have a second of two possible positions, characterized in that all stages with the exception of the last stage (K 6) each have an input of a coincidence gate (Gl) control when they are in the second position ("0"), and that the output pulse of the coincidence gate (Gl) that occurs in this case when the next clock pulse occurs (line T ) enters the first stage (Kl) first layer (»1«) toggles. Considered publications:
German publication No. 1097 725. 1 sheet of drawings 609 607/280 7.66 © Bundesdruckerei Berlin