SU828438A1 - Device for fast switching of communication channels - Google Patents

Description

one

The invention relates to communication technology and can be used for cross-switching of telephone and telegraph channels, data transmission channels, as well as for switching any circuits that require one-off switching.

A device for operational switching of communication channels is known, which contains a switching matrix, the output of which is connected to the input of the command signal generation unit through the control decider unit, the first output of which is connected to another input of the decoder unit through the sensor of the control signals.

However, the known device does not provide adequate speed.

The purpose of the invention is to increase the speed of the device.

For this purpose, a command coder, a reset signal generating unit, a switching signal generating unit, a key block, OR elements and an AND element are entered into a known device, while the second output of the command signal generating unit is connected to the inputs of the command coder and the switching signal generating unit whose output is connected to the first input of the key block, other outputs of the switching matrix through the corresponding first and second elements

OR are connected to the inputs of the AND element, the output of which is connected to the second input of the key block, the output of which is connected to the input of the switching matrix, and the output of the command encoder through the block of generating a reset signal is connected to another input of the switching matrix.

The drawing shows a structural electrical circuit of the proposed device.

The operational switching device of communication channels contains a switching matrix 1, a control decoder block 2, a control signal sensor 3, a command signal generation unit 4, a switching signal generation unit 5, a command coder 6, a reset signal generation unit 7, a key block 8, and 9 and the first and second elements OR 10, 11.

The device works as follows.

Upon a switching command, the device automatically performs all operations associated with performing the connection: disconnecting ("Resetting) the specified input of the switching matrix 1 from the output to which it was previously connected, disconnecting (" Resetting) the specified output of the switching matrix 1 from the input, s which it was connected to earlier, the connection given the input

and the output and the formation of a signal about the connection. The command for switching the input and output, which comes from the corresponding command output of block 4 (or from any discrete transmitting device, the remote control), which can be executed as a combined coordinate field of commands and signals, is converted by the decoder 6 into two commands: positional and group control the operation of block 7. The receipt of a positional command causes the formation of a reset input signal, the group one - the formation of a reset output signal.

These signals are sent to the corresponding control circuits for resetting the switching matrix 1, whose inputs and n outputs form a coordinate grid, in the cross sections of which there are binary elements that carry out the switching.

The input and output of the switching matrix 1 in the state of the connection form a path that in the general case can contain any number of circuits. When a reset signal arrives, all binary elements of the switching matrix 1 associated with the input and output are reset.

At the same time, the same command from block 4 in block 5 forms the control signal of the input-to-output connection and enters the corresponding input of block 8. Block 8 performs a control signal delay for the transition time of the binary elements of the switching matrix 1 to the state “Reset, which is accompanied by the appearance of signals at the inputs of both elements OR 10, 11, from the output of which they are fed to the inputs of element AND 9, which is triggered, the control voltage opens block 8, and the switching control signal goes to the corresponding input 1 switching matrix, establishing a binary element crosshairs in the input and output state of the compound.

The signals about the connections made come from the signal circuits of the switching matrix 1 through block 2 to the coordinate field of block 4, which displays the structure of the switching matrix 1 and the switching state of its inputs and outputs.

The health of the display elements of the unit 4 is monitored by simultaneously sending signals to them through the unit 2 from the sensor 3, which is triggered by an indication control command received from the control output control of the unit 4.

Claims (1)

1. Technical conditions TC 3.624.185 TU, 1973 (prototype).