SU1555869A1 - System for transmission and reception of discrete information - Google Patents

Abstract

This invention relates to radio. The purpose of the invention is to reduce the upper limit frequency of the transmitting path. The system contains T-triggers 1 and 2 on the transmitting side, a delay block 3, NOT 4 and 5 electrodes, a shaper of 6 bipolar pulses, a transmitting path 7, and on the receiving side a correction amplifier 8, which forms a filter 9, a selector 10 clock. frequencies, amplitude-time selectors 11 and 12, and e-mail OR 13. The information binary signal on the transmitting side is converted into a balanced three-level difference linear signal, fed through path 7 with attenuation to the receiving side. Here, the signal is amplified, corrected for frequency response and the principle of adding delayed and non-delayed signals is also converted into a three-level balanced signal. From this signal, the selectors 11 and 12 form a sequence of positive and negative pulses, of which the electronic OR 13 forms a binary signal corresponding to the original binary signal with an accuracy of erroneously regenerated characters. 2 Il.

Description

figure 1

The invention relates to systems for the transmission and reception of discrete information in wired communication networks.

In the receiving part of the system in front of the purpose of the invention is a reduction of the upper 5 along the transmitting path 7 of the three-level cutoff frequency of the transmitting path.

FIG. Figure 1 shows the structural electrical circuit of the system for transmitting and receiving discrete information; JQ in FIG. 2 - diagrams of the operation of the system for receiving and transmitting discrete information.

The system of transmitting and receiving discrete information contains the first 1 and $ second T-triggers, delay unit 3, first and second 5 NO elements, shaper 6 bipolar pulses, transmitting path 7, correction amplifier 8, forming a filter 9, 20 clock frequency selector , the first 11 and second 12 amplitude-time selectors, the element OR 13.

The system of transmitting and receiving discrete information works as follows 25 times.

The original binary signal (Lig. 2a) from the information signal bus is fed to the information input of the first

after signal amplification and correction in the correction amplifier 8 with frequency response K ((0) enters the input of the shaping filter 9 with frequency response F (tf), such that the resulting frequency response R (tO) of the path: the cable correction amplifier is the forming filter equal to to the module of the transfer function of the device of the addition of a signal delayed by T and no delay.

At the output of the shaping filter 9, which is the output of the path, a three-level balanced signal (Fig. 2i) is also formed from the three-level linear signal transmitted to the line (Fig. 2h) (according to the principle of adding a delayed and non-delayed signal) frequency and signal inputs of the first 11 and second 12 amplitude-time selectors. The clock voltage (Fig. 2k), taken from the output of the 10 clock frequency selector, is supplied

cash (Fig. 2h), entering the transmitting path 7 with attenuation.

In the receiving part of the system, the three-level signal transmitted through the transmitting path 7 after amplification and correction in the correction amplifier 8 with the frequency response K ((0) enters the input of the shaping filter 9 with the frequency response F (tf), such that the resulting frequency response R (tO) of the path : cable-correction amplifier - shaping filter, equal to the modulus of the transfer function of the device of the addition of delayed by T and undelayed signals.

At the output of the shaping filter 9, which is the output of the path, a three-level balanced signal (Fig. 2i) is also formed from the three-level linear signal transmitted to the line (Fig. 2h) (according to the principle of adding a delayed and non-delayed signal) frequency and signal inputs of the first 11 and second 12 amplitude-time selectors. The clock voltage (Fig. 2k), taken from the output of the 10 clock frequency selector, is supplied

35

time selectors 11 and 12, by means of which positive and negative pulses of the three-level signal are regenerated (Fig. 2i).

40

T-flip-flop 1, to the synchronizing JQ to the gate inputs of the amplitude input of which is supplied the voltage voltage voltage (FIG. 26) from the clock frequency bus. The binary sequence of pulses (Fig. 2c) from the output of the first T-flip-flop 1 is fed to the information input of the second T-flip-flop 2, to the clock input of which the clock voltage is also applied.

The binary sequence (Fig. 2d) from the output of the second T-flip-flop 2 is fed to the input of the delay unit 3, as well as to the information input of the first I and the control input of the second 5 NO elements, to the other inputs of which a delayed binary sequence is fed (Fig. 2e) from the output of the block 3 delays. With the help of the elements NO C and 5, the delayed binary sequence (Fig. 2e) is subtracted from the binary sequence (Fig. 2d). The resulting two binary sequences of pulses (Fig. 2e and g) obtained from the outputs of the NO k and 5 elements are fed to the inputs of the bipolar pulse generator 6, from the output of which the balanced three-level difference sigC outputs of the first 11 and second amplitude-time selectors are removed. the positive (fig and negative (fig. 2m) pulses are fed to the inputs of the element OR 13 from whose output the binary signal is picked up (fig. 2n), corresponding to (up to erroneously regenerated characters) the origin Nome mu binary signal (Fig. 2a).

- 50

55

Claims (1)

Invention Formula A system for transmitting and receiving disc information, containing on the opposite side of the serially connected first and second T-triggers, the composite inputs of which are combined, and the world of bipolar pulses, and on the receiving side - correction amplifier and clock extractor, output which is connected to the commodity inputs of the first and second time selectors 11 and 12, which are used to regenerate the positive and negative pulses of the three-level signal (Fig. 2i). to the gate inputs of the amplitude to the gate inputs of the amplitude From the outputs of the first 11 and second 12 amplitude-time selectors of a sequence of positive (Fig. 2l) and negative (Fig. 2m) pulses are fed to the inputs of the OR element 13, from the output of which a binary signal is removed (Fig. 2n) corresponding to (up to incorrectly regenerated characters) to the original binary signal (Fig. 2a). 50 55 Invention Formula A system for transmitting and receiving discrete information containing on the transmitting side serially connected first and second T-flip-flops, the clock inputs of which are combined, and a shaper of bipolar pulses, and on the receiving side a correction amplifier and a clock frequency extractor, the output of which is connected to the clock inputs first and second er 1 amplitude-time selectors, the outputs of which are connected to the inputs of the OR elements, characterized in that, in order to reduce the upper limit frequency of the transmitting path, a delay unit and the first and second elements of NO are entered on the transmitting side, the outputs of which are connected to the inputs of the bipolar pulse former while the output of the second T-trigger is connected to the input of the delay unit, the information input is the primary editor N.Blanar Compiled by V. Shevtsov Tehred M. Didyk Order 563 Circulation 52 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab., A / 5 55% 9 the control input of the second element is NO, and the control input of the first and the information input of the second element are NO connected to the output delay unit, and at the receiving side a shaping filter is introduced, the input of which is connected to the output of the correction amplifier, the output of which JQ is connected to the input of the clock frequency selector and the second inputs of the first and second amplitude-time selectors. Proofreader T.Malets Subscription