SU454709A1 - Device for generating synchronous binary binary coding signals - Google Patents

Description

The invention relates to tefgraph communication, and to devices for generating synchronous binary binary coding signals, and can be used to not transmit synchronous nm pulses of data transmission equipment. A device for forming a spectrum of a discrete signal with a decrease in the occupied frequency band is known, consisting of a successively connected trigger, a push-pull 10 discrete delay line for a duration and send, the input and output of which are combined and the adder. However, the known device allows to form a signal spectrum occupying the 15th lower frequency band, depending on the structure of the discrete signal. The purpose of the invention is to reduce the spectrum when transmitting random combinations of signals. 20 This is achieved by the fact that in the proposed device between the outputs of the input trigger and the inputs of the output adder and the trigger with the counting input. FIG. 1 shows the block diagram of the proposed device; in fig. 2 - time diagram of his work; in fig. 3 shows the spectral density of the signals at the input, e and the output of the device. The device works as follows. 30 5 The initial sequence of pulses, which enters the trigger input (see Fig. 1) in the form of pulses (see Fig. 2 a), is converted by it into pulses and a constant current (see Fig. 2 b, b), which from one From the outputs of trigger 1, they reach the first trigger 2 and from another output of trigger 1 to the input of trigger 3, and only positive edges of DC pulses (see Fig. 2b, c) cause a change in the state of triggers 2 and 3. Then the signals of these triggers in the form of direct current imiuls (see phg. 2 g, e) are added up in adder 4, forming the sequence pulses (Fig. 2 (), in which the current signal transmissions change the CBOii sign to the opposite, regardless of the number of currentless transmissions between the signals. Spectral densities of the original binary sequence (see Fig. 2b) and the resulting sequence at the output of the device proposed cm, Fig. 2 (e), with a transmission speed of 2400 units / sec., is shown in Fig. 3 (curves a and b, respectively). Subject of the Invention A device for generating synchronous signals of double binary coding, containing an input trigger with a counting input. m and two line outputs, as well as exit3

An adder with two inputs, characterized in that, with whole spectrum reductions in the transmission of random signal combinations, between the outputs of the input trigger and the inputs of the output adder is connected via a trigger with a counting input.

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