SU1223387A2 - Multichannel device for transmission and reception of digital information - Google Patents

Description

The invention relates to communication technology and can be used in data transmission in telegraphy, telemechanics to form channel beams,

The purpose of the invention is to provide communication to priority subscribers.

Fig. 1 shows the structural electrical circuit of the device proposed; Fig 2, structured on the electrical circuit of the address switch; Fig. 3 shows a structural electrical circuit for determining the accident of a concentrator; FIG. 4 shows a structural electrical circuit of the control unit.

The multichannel device for transmitting and receiving discrete information contains matching channel blocks 1, transfer switch 2, control block 3, reception switch 4, output analyzer 5, line matching unit 6, code receiver 7, distributor 8, codec codec 9, codec 10 code-dependent channels, an operational memory unit 11, an address generator 12, a buffer unit 13, a call selector 14, a random access memory unit 15, a hub fault identifier 16, a loop unit 17 and an address switch 18.

The address switch 18 (FIG. 2) has an OR 19 element, an inverter 20 and an AND 21 element,

The concentrator crash qualifier 16 (FIG. 3) includes a test signal generator 22, AND 23 elements, an adder 24 modulo two, a trigger 25 and a delay element 26, I

The control unit 3 (FIG. 4) contains two counters 27 and 28, a decoder 29, a dial pad 30, a switch 31, an address memory 32, two triggers 33 and 34, two HE elements 35 and 36, two I-input elements NOT 37-38, two multi-entry elements AND-NOT 39 and 40 and element 41 of the prohibition,

The device works as follows.

The concentrator fault identifier 16 at its information output generates a test signal at the positions and at the address specifically allocated to determine the concentrator crash. Test signal

five

five

0 0

five

0

0

five

contains a ringing tone, control text and a tone. The call signal is recorded by the call selector 14.

From the call selector 14, the address of the functional control is recorded in the buffer unit 13, and then fed to the second input of the control unit 3, In the control unit 3 by means of a multi-input. element -NE 39 performs the allocation of this address and the formation of a command 27 from the counter 27, a decoder 29, a keypad 30 and a switch 31, coming from the third output of the control unit 3 to the buffer unit 13. the storage unit 11 is not produced at the position of the channels P, as is done when establishing the connection, but on a specially allocated service position of the function control days. In addition, the control unit 3 using the AND-HE elements 39 and 38, the HE element 35 and the trigger 34 (FIG. 4) forms, at its first output, a transfer command from the switch 2 transmits to the loop unit 17 at the service position of the functional control address code, which is assigned to the functional control test signal. Thus, the information input of block I7 of the loop receives first the call signal, then the code of the function control address, and then from the determinant 16 of the hub alarm through the transfer switch 2 and the nsgm signal itself,

In the memory elements (performed, for example, on the registers) of the heading block 17, the information arriving at its information input is accumulated on a release signal, which terminates the test signal, and which is recorded by the output analyzer 5, the concentration equipment is reset. By this time, the accumulation process in the loop unit is completed and the accumulated information in it enters the receive path at the receiver.

7 codes in which the function control address code is registered,

In the described process, the loop unit performs the switching function

3

(loop) path-transfer to the reception

with a simultaneous delay of information

The registered code in the form of the address of the test signal and the test signal itself at the position of the functional control are fed through the switch 4 of the reception to the corresponding inputs of the detector 16 for the concentrator failure.

The concentrator fault identifier 16 compares the received information with the transmitted one and, by their coincidence or non-coincidence, makes a decision about the health or malfunction of the concentration equipment.

The described procedure for passing the test signal with a delay provides an independent, sequential test of the transmission path, and then the reception path of the concentration equipment.

With proper equipment concentration, i.e. when the test signals for transmission and reception coincide, from the control output of the hub 16 determinant to the control input of the address switch 18 and from its control output to the inhibit input of the address generator and to the control inputs

23387

The transfer switch 2 and reception 4 receive a no-alarm signal.

In the case when the determinant 16 of the concentrator: torus failure, due to the failure of the transmitted and received test signals, detects the non-interference of the concentration equipment, from the control output the determinant 16 of the concentrator failure

to the control input of the address switch 18 receives an alarm signal. Under the action of this signal, the address switch 18 delivers a prohibition signal to the inhibitory input of the address driver 12. i as well as the supply of the control signal through the WL element to the control inputs of the transfer and receiving switches 2 and 4.

20 Under the influence of these signals, the addresses of the hub addresses from the address generator 12 are banned, the information inputs and outputs of the matching channel blocks are connected to the multiplexing equipment, the addresses assigned to the time channel positions of the multiplayer equipment are blocked to the address inputs

, d matching channel blocks 1.

22

26

w 2.C

rH

Claims (1)

MULTI-CHANNEL DEVICE FOR TRANSMISSION AND RECEIVING OF DISCRETE INFORMATION by ed. St. No. 915263, characterized in that, in order to ensure communication of priority subscribers, a hub accident identifier, a loop unit and an address switch connected to its address input with the address input of the distributor, the control output - with the inhibitory input of the address shaper and the control inputs of the switches are introduced into it transmission and reception, the output address is with the address inputs of matching channel blocks, and the information input and output and address input of the hub accident identifier are connected to the inputs of the same name and the outputs of the matching channel blocks, the control output is with the input of the address switch of the same name, while the gate input of the loop unit together with the same input of the hub failure detector is connected to the additional output of the distributor, the information input and output of the loop unit are connected respectively to the output of the transmission · switch and the input of the receive switch .