SU1562948A1 - Method of sequential transmission and reception of digital information and device for effecting same - Google Patents

Abstract

The invention relates to telecommunications and can be used in serial communication systems with pulse-interval manipulation. The method consists in sequential transmission from the transmitting side 1 to the receiving 13 rectangular pulse signals of duration T ₁ , the interval-pulse sequence of signals, and the time intervals T ₂ and T ₃ between these pulses correspond to the transmission of a single and zero pulse signals of the original sequence. At the receiving side 13, the initial single and zero pulse sequence is restored by gating the received interval-pulse sequence at points in time that are separated from the trailing edge of each received pulse of this sequence by an interval equal to 0.5 T ₁ + T ₂ . The device contains a one-shot 2, elements And 3, 7, 8, elements OR 4, 11, registers 5, 15 shift, the element NOT 6 and elements 9, 10, 14 delay. 2 bp f-ly, 5 ill.

Description

sd

with

Yu

,,

Rig. 2

The invention relates to telecommunications and can be used in systems for the sequential transmission of information with interval-pulse manipulation. J

The purpose of the invention is to simplify the process of restoring the original food to single and zero pulse signals and to simplify the device.

Fig. T is a signal timing diagram explaining the operation of the method; on fng02 and 3 - functional diagram of the transmitting and receiving sides of the device (decoder); Figures 4 and 5 are timing diagrams explaining the operation of the device.

The method is concluded in that from the transmitting side to the receiving side, rectangular Pulse signals, of duration Tj (FIG. 1), an interval-pulse sequence of signals are transmitted sequentially, and the time intervals T4 and T between the rectangular pulse signals correspond to the transmission of a single and zero pulse signals of the original sequence, i.e. it 1 the transmitting side encrypts the original sequence of single and zero pulse signals from the receiving side. It decrypts the received interval-pulse sequence of signals by restoring the original sequence of single and zero pulse signals by strobing the received interval-pulse sequence of signals at time points, distance from the back front of each received pulse interval-pulse sequence of signals at times th interval equal to 0,5 Tf + T. Ksli at the indicated times take a rectangular pulse signals intervalno- pulse sequence, it generates a single pulse signal is, otherwise, formruyut zero pulse signal of pulse sequences used kodnoy signalovo

The device on the transmission side 1 (figure 2) contains a one-shot 2, the third element And 3, the second element of the CG 4, the shift register 5, the element NG, 6, the second 7 and the first 8 elements And the second 9 and the first 10 delay elements

0

five

0

five

0

35

40

50

55

ki and the first element OR 11, the communication channel 12, and on the receiving side 13 (FIG. 3) the delay element 14 and the shift register 15.

The device works as follows.

The message to be transmitted is recorded in the shift register 5, after which the Start signal (Figs 2 and 4) is formed on the leading edge of which the single-vibrator 2 generates a single pulse of duration Tf T. This pulse passes through the OR 4 element to the input of the channel 12 This is the first pulse of the transmitted sequence. At the same time, the same pulse acts on the second inputs of the elements 7 and 8. If the serial output of register 5 contains a logical one, this pulse passes through the element And 8, if zero - through the element And 7, and, having undergone a time delay T7 T on the element 10 delay or T 2T on the element 9 delay, through the element OR 11 enters the clock input of the register 5 and the first input of the element And 3 ,, Pass through the last (in the presence of the Start signal), as well as through the IPI 4 element, a pulse arrives at the input of communication channel 12, forms the second pulse of the interval-pulse sequence, and simultaneously the second inputs of elements And 7 and 8. As a result of the impact of this pulse on the clock the input of register 5 occurs in it a binary shift These symbols ensure that the next symbol is prepared for transmission. Next, the operation of the transmitting side of the device proceeds as described. The generation of the transmitted message is terminated when the control signal has run.

On the receiving side 3 (FIGS. 4 and 5) of the received interval-pulse sequence, having undergone a delay of 0.5 t, + T 1.5 T, from the output, delay element 14 records the signal acting on the information output of the register 15. If at this moment in time there is a pulse at its information input, then a logical unit will be written to register 15, otherwise a logical NULL will be written. The same happens after the second and subsequent

pmulsso accepted.urrn controversially Thus the message is WRITING.COM is in the register 15.,

Claims (1)

Invention Formula 1 "A method of sequential transmission and reception of digital information, which consists in converting the source signal into an interval-pulse sequence of signals, which is transmitted to the receiver side, on the reception side, using the received interval-pulse sequence of signals, restore the original signal characterized in that, in order to simplify the recovery process, the original code sequence 20 delay elements, information the unity of single and zero pulse signals are converted into an interval-pulse sequence of signals in such a way that the single and zero pulses of the original signal correspond to time intervals between single rectangular pulses of arbitrary duration T (, interval-pulse sequence of Signals of arbitrary duration T and T3, respectively, and T3 0.5 T, + T2, recovery of the code sequence of single and zero pulse signals gating is performed. home start device, exits third the interval-pulse after element And the one-way signal interconnect at time points away from the falling front of each received rectangular pulse of the interval-pulse signal sequence by a time interval equal to 0.5 T, + T2, and if gating the received sequence has a single impulse, then form a single impulse signal of the source terminal, respectively, with the first and second inputs of the second OR element, the output of which is connected to the second The 40 inputs of the first, second AND elements and the input of the communication channel, a register is entered on the receiving side, the information and clock inputs of which are connected respectively to the output of the digital channel and the output of the delay element, the outputs of the register are the outputs of the device. single sequence of single Riga.1 and zero signalpulse pulses of signals, if at the time of slinging the received sequence has a zero impulse, then a zero impulse signal of the original code sequence of single and zero impulse signals is formed 20 A device for successively transmitting and receiving digital information containing a communication channel; on the transmitting side — And elements; on the receiving side — a delay element, the input of which is connected to 5 to the output of the communication channel, characterized in that, in order to simplify the device, a one-shot, OR elements, a register, a NOT element and the register inputs are informational inputs of the device, the register output is connected directly to the first input of the first element AND and through the element NOT to the first input of the second element AND, the outputs of the first and second elements AND are connected via the same delay elements respectively to the first and second inputs the first OR element whose output is connected to the register clock input and the first input of the third AND element, the second input of which is combined with the one-shot input and is connected to the first and second inputs of the second OR element, respectively, whose output is connected to the second the inputs of the first, second And elements and the input of the communication channel, a register is entered at the receiving side, the information and clock inputs of which are connected respectively to the output of the sweet channel and the output of the delay element, the outputs of the register are the outputs of the device. / J Fig.Z Wrigle Vm.5 Compiled by M.Nikulenkov Editor N.Rogulich Tekhred L / SerdyukovaKorrektor V. Girn to Order 1067 Circulation 440 8NIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology CCGP 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and publishing combine Patent, g, Uzhgorod ,, st. Gagarin, 101 J Q9 Subscription