Device for controlling communication channels

 

(57) Abstract:

The invention relates to telecommunications, and particularly to control devices of occupied channels of communication without interruption and distortion of the transmission of information signals. The technical result is to increase the noise immunity by eliminating overlay service signals on the information and exceptions receipt of the service signals in the receiving subscriber set. The device comprises in the transmitting side, the transmitting subscriber set, the first detector pauses, generator, pilot signal and matching the adder, and at the receiving side of the receiving subscriber set, the second analyzer breaks, the shift register with reset, the inverter, the trigger and the display element. The new device is the introduction of its composition at the sending end of the delay elements, and at the receiving side of the receiver, the pilot signal and the key with the appropriate connections between them and with other components of the device. 1 Il.

The invention relates to telecommunications, and in particular to devices for monitoring of busy channels of communication without interruption and distortion of the transmission of information signals.

A device operational control of the spacecraft is persecuted and generators control frequency, and the receiving part, which includes the input unit, the unit is automatic gain control, bandpass filters, Comparators, logic And adjustable amplifier blocks allocation envelope and phase detectors.

The disadvantages of this device are the need of interruption the transmission of information signals during the test channel and the complexity of its design, due to the presence of a large number of constituent elements.

A device for measuring residual attenuation employed in telephone channels [2], containing at the sending end generator measurement signal, the first impedance adder and the first subscriber device, and at the receiving side - compensation generator, driver reference signal, the amplitude detector, the level meter, the filter, the second subscriber device, the analyzer breaks, two key cascade, the second matching adder and a control unit adjusting the generator.

The disadvantages of this device are the effects of the signals of the measuring generator on the information signals, caused by simultaneous transmission over the communication channel, and a significant design complexity due to the large number of the activities is selected as a prototype device for controlling communication channels [3], containing on the transmitting side, the transmitting subscriber set, the first analyzer breaks, generator, pilot signal and matching the adder, and at the receiving side of the receiving subscriber set, the second analyzer breaks, the shift register with reset, the inverter, the trigger and the display element.

A disadvantage of this device is the low immunity due to admission of the subscription set, along with useful information and utility pilot signal and the overlay at the beginning of the useful signal at the end of a long pause the pilot signal due to a certain inertia of the first analyzer breaks and generator pilot signal.

The aim of the invention is to increase the noise immunity by eliminating overlay service signals on the information and exceptions revenue service signals in the receiving subscriber set.

This goal is achieved by the introduction of the device at the sending end of the delay elements, and at the receiving side of the receiver pilot signal, and a key connected with other parts in a certain way.

Comparative analysis of the prototype shows that sawston, the proposed device complies with the criteria of the invention of "novelty."

A comparison of the proposed device with other technical solutions shows that the presence of the device to validate the employed communication channels of different keys, official receivers and signal delay elements are widely known. However, with the introduction of the delay element information signals on the transmission side, the receiver pilot signal and controlled key at the receiving side there are new properties, manifested in improving the noise immunity of the device. This allows to conclude that the technical solutions according to the criterion of "significant differences".

The drawing shows a structural diagram of a device for controlling communication channels.

Device for controlling communication channels on the transmit side contains the transmitting subscriber set 1, the first analyzer 2 breaks, the generator 3, the pilot signal, matching the adder 4 and the element 5 delay, and at the receiving side of the receiving subscriber set 6, the second analyzer 7 breaks, the shift register with reset 8, the inverter 9, the trigger 10, the display element 11, the receiver pilot signal 12 and the key 13, the transmitting side output of the first abusadora pauses 2 is connected to the input of the generator 3, the pilot signal, to the first and second matching inputs of the adder 4 is connected to the outputs respectively of the delay element 5 and the generator 3, the pilot signal, the output of the adder 4 is connected to the input of the transmission channel 14, the output of the channel 14 of the transmission at the receiving side are connected to the inputs of the second analyzer breaks 7, receiver, pilot signal 12 and the key 13, the output of the second analyzer breaks 7 is connected to the inputs of the shift register 8 to zero and the inverter 9, the output of the shift register 8 with zeroing connected to the first input of the trigger 10, the output of the inverter 9 is connected to boleosoma the input of the shift register 7 and to the second input of the trigger 10, the output of which is connected to the display element 11, the output of receiver 12, the pilot signal is connected to the control input of the key 13, the output of which is connected to the input of the receiving subscriber package 6.

The device operates as follows.

On the transmission side transferable information from the output of the transmitting subscriber set 1 is supplied directly to the input of the first analyzer 2 breaks and through the delay element 5 and the matching adder 4 in the transmission channel 14. The first analyzer 2 pauses constantly monitors the transmitted information. Upon detection of significant pauses in Pei 2 pauses issues on the generator 3, the pilot signal allows the potential which output from the generator 3 to the second input matching adder 4 receives the pilot signal. Thus, in a controlled channel 14 with the transferor is constantly being either an information signal from the subscriber set 1 or the pilot signal from the generator 3. While there may be a small pauses caused by the discontinuity of the information signal, the pilot signal, and a certain inertia of the first analyzer 2 breaks and generator 3, the pilot signal.

When the health of the monitored channel 14 on the receiving side directly to the inputs of the second analyzer 7 breaks, receiver 12, the pilot signal and the key 13 receives a sequence of information signals and the pilot signal. The second analyzer 7 pauses, finding a moment of pause, generates the trigger signal at the first input of the shift register 8 to zero, resulting in the shift register 8 will start at a certain speed to move "one". If the pause was short, i.e., caused by the information signal or intermittent pilot signal, at the time of its completion by the signal coming from the output of the second analyzer 7 pauses at the input of the inverter 9, the inverter 9 and its output signal, POY likely to be significant, indicating a failure of the monitored channel 14, "one", received from the output of the second detector 7 pauses at the first input of the shift register 8 to zero after a certain time will appear at its output and change the position of the trigger 10, which will trigger element 11 of the display, indicating the failure of the channel 14.

During recovery channel 14 appearance at its output, and therefore on the input of the second analyzer 7 breaks the information signal or the pilot signal causes the issuance of the relevant second signal analyzer 7 pauses that triggers the inverter 8, giving the signal to the second input of the trigger 10, which activates and carries off element 11 of the display.

As follows from the above, the positive effect resulting from the introduction to the operation of the new elements is as follows.

Due to a small delay in the receipt of the information signal to the approval of the adder 4 compared to his admission to the input of the first detector 2 breaks provided by connection to the first input matching adder 4 unit 5 delays, no imposition at the beginning of the information is jam 2 breaks and generator 3, the pilot signal.

When receiving the pilot signal at the receiving side activated receiver 12 pilot signal, and its output potential closes the key 13, thereby preventing its passage to the input of the receiving subscriber device 6. In the absence of the same in the output signal of the pilot signal receiver 12 pilot signal to its output potential opens the key 13, providing the information signal to the input of the receiving subscriber device 6.

Thus, the goal of improving the noise immunity by eliminating overlay service signals on the information and exceptions receipt of the service signals in the receiving subscriber set is reached.

The advantages of the proposed device are its simplicity, contributing to low cost and high operational reliability and high security of information signals from the utility in the process of its functioning. All this contributes to the broad application of this device to create the various subsystems of the control channels of communication in the automated system of government communication.

Technical and economic effect, provided the proposed device, seclude the efficiency of channels and communication systems in General.

The sources of information.

1. Auth. St. USSR N 684749, CL H 04 B 3/04, 1979

2. Auth. St. USSR N 788401, CL H 04 B 3/48, 1980.

3. RF patent N 2024204, CL H 04 B 3/46, 1994, (the prototype).

Device for controlling communication channels with the transmission of the transmitting subscriber set, the first analyzer breaks, generator, pilot signal and matching the adder, and the output of the transmitting subscriber set is connected to the input of the first analyzer breaks, the output of which is connected to the control input of the generator of the pilot signal, the output of which is connected to the second input matching of the adder, the output of which is connected to the input of the control channel transmission, and at the receiving side of the receiving subscriber set, the second analyzer breaks, the shift register with reset, the inverter, the trigger and the display element, out of the controlled transmission channel connected to the input of the second analyzer breaks, the output of which is connected to the first input of the shift register with reset and to the input of the inverter, the output of the shift register with reset connected to the first input of a trigger, the output of the inverter to boleosoma the input of the shift register with reset and to the second input of the trigger, the trigger output to the input item display, great for the of igala and key the input of the delay element is connected to the output of the transmitting subscriber unit, and to output the first input matching adder, at the receiving side output of the control channel transmission is connected to the inputs of the receiver, the pilot signal and key, the receiver outputs the pilot signal is connected to the control input of the key, and the key to the entrance of the reception of a subscription package.

 

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