SU489237A1 - Receiver for multi-frequency data transmission equipment - Google Patents

Description

(54) RECEPTION DEVICE FOR MULTI-FREQUENCY DATA TRANSFER EQUIPMENT

aan with. ONE, on which signals are fed during the reverse logical logic conditions of reception. The output 18 of node 17 is connected to the input of the voltage differential marker 19, the output of which is connected to the inputs of marks 20 and 21 of the leading and trailing edges, respectively. The output of the front edge marker 20 is connected to the dumping bus 15, and the output of the rear edge marker 21 is connected to the bus, which is given a pulse permitting the recording of information in the recording unit of the forward channel receiver,

The device works as follows.

In the absence of impulse noise, interruptions and other disturbances in the communication channel when changing frequencies, at least in one of the short time groups, the STSTbCH conditional logic check will not occur. At the same time, a pulse of violation of the logical reception conditions will occur. This pulse arrives at node 17 and through the elements OR 3 and 4 to nodes 1 and 2, which will be in the initial state.

After the eye of the impulse of disturbance of the pogic conditions, the line will start from sec; at time by nodes 1 or 2, as well as by node 17. The time constants at nodes 1 and 2 are the same, and T.i.p.i and at node 17 are three times. times smaller and equal to Ts.a. After a time of change in the state of output 18 of node 17, a positive voltage drop will be performed by a marker 19, the output of which is negative pulse. This impulse will go to the inputs of the markers 2O and 21. First, the impulse is wired at the output of the marker 2O and the post to the reset bus 15, which will lead to a reset of the storage unit of the forward channel receiver to zero. At the output of the marker 21, a pulse of EIIts somewhat later 1 will allow the recording of information through the AND element into the recording unit of the receiver of the right channel. After the time TK.PR changes, the state at the output 22 of node 1 or at the output 23 of node 2 changes. This will cause the control of its tr1 gaming 7 to be transferred, i.e., to fix the sign. The voltage drop that occurred at the outputs of control trigger 7 will be highlighted by one of the markers 8 or 9, and after 5 sew through its pulse through the element OR 10 re-scroll-readiness trigger 11. In addition, the transfer of the control trigger 7 will lead to the frequency, generated by the reverse channel transmitter. The transfer of the fngger 11 will start in the control unit of the output device (CCU) the device components that rewrite information from the storage unit of the forward channel receiver into the memory BACW device and output the information to the punched tape. At the end of the output of information on a punched tape, the CCTV produces a pulse, by which the readiness trigger 11 will be returned to its original state.

In the presence of impulse noise, interruptions and other disturbances in the communication channel, the appearance of any disturbance in the channel. Nale leads to a violation of the logical conditions of admission. In this case, the logical verification devices emit impulses of violation of the logical reception conditions. These pulses occur at random times and bring all three time control nodes back to their original state. If the impulse of violation of the logical conditions of reception of the VITS after the passage of TS.z earlier than the passage of T.pr. then in the storage unit of the receiver of the forward channel, the recorded new sign information will appear. After the end of the impulse of violation of the logical reception conditions, the time will begin again, and after Ts.z, the information in the memory of the receiver unit will be erased and a new recording will be made. Such a process can be repeated many times until, when the time is counted, the TK.PR D rewrite is not counted into the storage device of a BWTU only this information.

and will be used. It is obvious that the effect of the moment of in-: lagging interference on the accuracy of the information recorded in the storage unit of the receiver is completely eliminated.

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Claims (1)

Invention Formula A receiving device for multi-frequency data transmission equipment, comprising a decoder, the outputs of which are connected via one of the inputs And connected to the corresponding inputs of the storage unit, characterized in that, in order to increase noise immunity, input pulse violations of logical reception conditions connected in series . .T.® ™ time and voltage drop marker, the outputs of which are connected to the front and rear edges of the pulse, and the output of the marker, the leading edge is connected to the dump bus of the storage unit, and the output of the marker of the trailing edge to the common input of the cops I.I.