SU725255A1 - Information transmitting-receiving apparatus - Google Patents

Description

one

The invention relates to radio engineering and can be used in remote process control systems.

A device for transmitting and receiving information is known, comprising on the transmitting side a serially connected clock signaling unit and a delay element, as well as serially connected information signal forming unit, a mixer, a group signal transmission unit, all of which through a communication channel is connected to the combined inputs of the information selection unit. a signal and a sync signal extraction unit at the receiving side 1.

However, the known device does not provide noise immunity from passive interference and has insufficient speed.

The purpose of the invention is to increase the speed and noise immunity of the device.

For this purpose, in the device for transmitting and receiving information, on the transmitting side, there are serially connected synchronization unit and a delay element, as well as serially connected information signal generation unit, a mixer, a group signal transmission unit, the output of which

through the communication channel is connected to the combined inputs of the information signal extraction unit and the sync signal extraction unit at the receiving side, the output of the sync signal generation unit is connected to the second mixer input directly, the output of the delay element is connected to the input of the information signal generation unit, and two outputs of the sync signal extraction unit additional inputs of the information signal extraction unit.

In addition, the information signal generating unit contains the information signal generator, as well as serially connected code dialing unit, comparison unit, coincidence element, frequency divider and accumulator, the outputs of which are connected to the corresponding inputs of the comparison unit. At the same time, the output of the information signal generator is connected to the second input of the matching element, and the first and second inputs of the storage device are respectively the input and output of the information signal forming unit.

Claims (4)

The information signal extraction unit contains, in series, an integrator, an And element, a counter, the outputs of which are connected to the corresponding inputs of the descrambler, while the second inputs, - .-,. - .--.Л :: - V, .. ,, «.-. - rf ::. ., .V.O. . the element And and the counter. are received by the first and second additional inputs of the information signal extraction unit, respectively. The clock selection unit includes. The sequentially connected integrator and standby multivibrator, the output and input of which serve respectively the first and second outputs of the sync signal extraction unit. The drawing shows a structural electrical circuit of the proposed device. The device for transmitting and receiving information contains on the transmitting side a sync signal generating unit 1, a delay element 2, a mixer 3, a group signal transmission unit 4, a communication channel 5 and an information signal generation unit 6 consisting of a code set unit 7, an accumulator 8, frequency divider 9, comparison unit 10, coincidence element 11 and information signal generator 12, on the receiving side — information signal extraction unit 13, consisting of integrator 14, AND element 15, counter 16 and decoder 17, and sync selection block 18 a signal consisting of an integrator 19 and a standby multivibrator 20. The device operates as follows. The transmitted information is encoded in binary code, which is dialed in block 7 and recorded in block 10. Sync pulses from block 1 are fed to one of the inputs of mixer 3 and to the input of element 2. Delayed for a time equal to its duration, the sync pulse has a leading edge "zeroed drive 8. After that, block 10 generates a signal arriving at element 11, which is allowed to pass information pulses from generator 12 through element 11 to divider 9, where the information pulses are expanded to a definite specified distance ins much higher than the pulse duration, passive interference. Next, the information signal from the divider 9 is fed to the counting input of the accumulator 8 and to the other input of the mixer 3. In the accumulator 8, information is accumulated about the code, which is compared with the code stored in block 10, and when the codes coincide, block 10 generates a signal information pulses from the generator 12 through the element And and the divider 9. Thus, a strictly specified number of information pulses is fed to one of the inputs of the mixer 3, and the sync pulses are fed to the other input. In the mixer 3, a group signal is formed, which through block 4 and channel 5 goes to the receiving side, to the input of block 13 and to the input of block 18. At the input of the integrator 19 of the block 18, all signals available at the output of the channel 5 arrive, and the integrator 19 is allocated There are only pulses that are longer than or equal to the duration of the sync pulse, with the leading edge of which the counter 16 flushes, and the falling edge is triggered by the waiting multivibrator 20. At the input of the integrator 14 of the block 13 all signals arrive channel output 5. Integrator 14 extracts pulses, d itelnost greater than or equal to a predetermined duration of data pulses. In this case, the waiting multivibrator 20 gives permission for the element AND 15 to pass information pulses from the integrator 14 to the counter 16, where the number of transmitted information pulses accumulates. From the outputs of the counter 16, the information enters the decoder 17. Claim 1. A device for transmitting and receiving information, comprising on the transmitting side a serially connected clock signaling unit and a delay element, as well as serially connected information signal shaping unit, a mixer, a group signal transmission unit, the output of which through the communication channel is connected to the combined inputs of the information signal extraction unit and the sync signal extraction unit on the receiving side, which is different By the fact that, in order to increase speed and noise immunity, the output of the synchro-shaping unit is directly connected to the second input of the mixer, the output of the delay element is connected to the input of the informative signal-shaping unit, and the outputs of the sync-extraction unit are connected to two additional inputs of the information signal separator: 2. The device according to claim 1, characterized in that the information signal generating unit comprises an information signal generator, as well as serially connected code dialing unit, comparison unit, coincidence element, frequency divider and accumulator, whose outputs are connected to the corresponding inputs of the comparison unit, this is connected to the second input of the coincidence element by the output of the information signal generator, the first and second inputs of the accumulator being, with the input and output of the information generating unit Ignala 3. The device according to claim 1, characterized in that the information signal extraction unit comprises a sequentially connected integrator, an AND element, a counter whose outputs are connected to the corresponding inputs of the decoder, while the second inputs of the AND element and the counter are respectively the first and second additional inputs information signal extraction unit. 4. The device according to claim 1, wherein the sync signal extraction unit comprises in series connected integrator an-dependent multivibrator, the output and input of which are respectively the first and second outputs of the sync extraction unit. Sources of information taken into account npji examination 1. USSR Copyright Certificate № 517007, cl. H 04L 1/14, 1976 (prototype).