RU1830639C - Quasi-electronic cross commutator of communication channels with remote control - Google Patents

Description

 The invention relates to communication technology and can be used in communication networks for switching telephone and telegraph channels.

The purpose of the invention is to increase the efficiency of switching.

This goal is achieved by the fact that the first element AND and the OR element are connected in series, connected between the additional output of the marker and the fourth input of the drive, the additional output of the marker through the element NOT connected to the first input of the second element I. The output of which is connected to the second input OR element, and the second input is connected to the first signal of the remote control input and the first output of the trigger, the second output of which is connected to the second input of the first AND element and the second signal input of bullets that one.

The drawing shows a functional circuit diagram of a cross quasi-electronic switch of communication channels.

The cross quasi-electronic switch contains a register of 1 commands, a register of 2 command codes, a block of 3 decoders, a sensor 4 of a program, a marker 5, a switching field 6, a block of 7 encoders, a control panel 8, a counter 9 of an array of channel numbers, a register 10 of the senior number, and a block 11 of comparison , a clock generator 12 and a drive 13T which contains a shift register 14, keys 15, memory elements 16, a HE element 17, a first 18 and a second 19 AND elements, an OR element 20, a trigger 21 having display mode setting inputs 22 and 23.

The device is connected in series with the register 10 of the senior number, the comparison unit 11, the generator 12. The second output of which is connected to the additional output of the console 8. The output of the generator 12 is connected to the inputs of the drive 13 and the counter 9, the first and second additional outputs of block 3 are connected to the first input of the register 10 and the second input of the counter 9. The output of block 11 is connected to the input of the drive 13, the input of the console 8, the second input of the register 10 and the third input of the counter 9.

An additional input of the marker 5 through the first element AND 18 and the element OR 20 is connected to the input of the drive 13, in addition, the output of the marker 5 is connected through the element NOT 17 and the second element And 19 with the second input of the element OR 20,

The first output of the trigger 21 is connected to

the second input of the second element And 19 and

The first signal input of the remote control is 8, and WTO. swarm trigger output 21 is connected to the second

0

5

the input of the first element And 18 and the second signal input of the remote control 8.

The switch operates as follows.

The operator, by applying a signal on one of the buses 22 or 23, selects the display mode — the display of the numbers of free channels or occupied channels.

When displaying the free channels, the signal appears at the second output of the trigger 21, arrives at the And element 18 and the remote control 8 signaling that the free channels are being displayed.

From the console 8, through the block 7 of the encoders, the lowest number of the controlled range is entered into counter 9 and the major number is entered into register 12.

According to the clock pulse of the generator 12, the number of the first controlled channel from 0 of the counter 9 is entered into the marker 5 and is fed to the input of the drive 13.

If the monitored channel is free, then at the additional output of marker 5, a signal is received that passes the AND 18, OR 20 elements, and goes to the keys 15. In this case, the signal will pass only the first key 15-1. the second input of which receives a signal from register 14. The signal from the output of key 15-1 will record the number of the first free channel in block 16-1.

The next clock pulse will add 1 in the counter 9, i.e. will form the number of the second monitored channel. At the same time, this pulse will shift the unit in register 14, preparing the next key 15 and memory unit 16.

Display of busy channel numbers is done in the same way. But in this case, the recording is made by a signal, after entering. located at the input of the element HE 17, and the passing element And 19, the second input of which receives a signal from the trigger 21.

The operation of the switch for displaying free channels continues until the channel number coming from the output of counter 9 to the comparison unit 11 does not coincide with the channel number recorded from the output of register 10, i.e. until the entire specified range of channels is monitored. At the same time, at the output of block 11, there is a signal that stops the generator 12 and sets the shift register 14, the elements of memory 16-1 ... 16-drive 13, the display elements of the console 8, counter 9 and register 10 to the initial zero condition.

Claims (1)

SUMMARY OF THE INVENTION A cross quasi-electronic remote-controlled communication channel switch comprising in series 5 0 5 0 5 0 5 connected the register of the command code and the sensor of the program, the output of which is connected to the first inputs of the marker and the block of encoders, the second input of which is connected to the output of the marker, the second input of which is combined with the first input of the control unit and through the block of decoders is connected to another output of the register of the code of commands the input of which is connected with the first output of the block of encoders, the second and third outputs of which are connected to the first inputs of the counter of the array of channel numbers and the register of the senior number, the outputs of which are connected to the inputs of the bl comparison window, the output of which is connected to the first input of the clock generator, the first input of the register of the highest number, the counter of the array of channel numbers and the drive, and the second input of the control unit, the first and second outputs of which are connected respectively to the second inputs of the encoder unit and the clock generator, output of the last of which connected to the second input of the drive and the third input of the counter of the array of numbers, channels, the output of which is connected to the combined third inputs of the drive and markers, the outputs of the last of which are connected to the switching field, and the outputs of the drive are connected to the information inputs of the control unit, characterized in that, in order to increase switching efficiency, the trigger, the first and second AND elements are introduced, the OR element and the inverter are connected between the additional output of the marker and the first input of the second AND element, the output of which connected to the first input of the OR element. the output of which is connected to the fourth drive input, the second input of the OR element is connected to the output of the first AND element, the first input of which is connected to an additional marker output, and the trigger outputs are connected to the second inputs of the first and second AND elements and to the third and fourth inputs of the control unit.