SU1527647A1 - Device for transmission of information - Google Patents

Abstract

The invention relates to telecommunications and can be used in information transmission and storage systems. The device converts in each time frame of fixed duration a certain number of code-impulse information signals into the corresponding pulse-width signals and carries out the sequential transmission of these signals to the communication channel, which expands the field of application of the device due to its autonomous operation. The device contains a pulse generator 1, an AND 2 element, summing counters 3, 6, 9 pulses, a switch 4, a subtracting counter of 5 pulses, triggers 7, 10, 13, elements OR 8, 11, 12, 14, control 15 and informational 17 outputs, information inputs 16 and input 18 "start". 1 il.

Description

The invention relates to telecommunications and converts a pulse-modulated signal into a pulse-width modulated signal for recording it on a carrier and transmitting it over a communication channel.

The aim of the invention is to expand the field of application of the device by ensuring its autonomous operation.

The drawing shows the functional diagram of the device.

The device contains a pulse generator 1, an AND 2 element, a third summing counter of 3 pulses, a switch 4, a fourth subtracting counter of 5 pulses, a second su -1 dying counter of 6 pulses, a third RS trigger 7, a third element OR 8, the first summing counter of 9 pulses , the second RS-trigger 10, the fourth element OR 11, the second element OR 12, the first counting trigger 13, the first element OR 14, the control output 15, the information inputs 16, the information output 17 and the input 18 Start.

The device works as follows.

At the initial moment, the first information subblock code is fed to the inputs 1 6 and the device is started by applying a pulse to the input 18, while the counters 3, 6 and 9 and the trigger 10 are set to the initial state (zero state, and the trigger 7 is single, the counter 5 dies, the code of the first information subblock is recorded and the generator 1 is started, and the level changes at the output 17 of the device and the trigger 13, the conversion factor of the counter 3 is equal to constant g, and the counter 6 for the conversion of the entire information block,

After starting generator 1, the pulses from it go to counter 6 and through element 2 and switch 4 to counter 5, which overflows with the first pulse, a pulse at its output sets trigger one to one state and arrives at output 15 of the device as a requirement Code output of the next subblock. The trigger 10 switches the output of the switch 4, and the generator 1 pulses begin to flow to the subtracting input of the counter 5, which gives an overflow pulse through the number of ticks, equal to

five

0

five

0

five

0

five

0

five

subblock code that triggers reset of trigger 10 through the element OR 12, writing the code of the next subblock to the bits of counter 5 through the element OR 14, adding one to counter 9, / which has a conversion factor equal to the number of subblocks in the code block, and switching the trigger 13 through the element OR 11, which causes a change in the signal level at the output 18 of the device. In this case, by means of the trigger 10, the output of the switch 4 is switched and the generator 1 pulses are again fed to the counter 3. Thus, the cycle is repeated. conversions for the second and subsequent code sub-blocks.

After the last subblock in the code block is transformed, by the overflow of counter 9, the trigger 7 switches to the zero state and the output of the And 2 element does not pass the generator 1 pulses, and the next conversion of the code subblocks stops. The output 17 of the device begins to form a separation interval, the end of which is determined by the pulse at the overflow output of counter 6, which causes switching of the trigger 13 and setting trigger one to one. From this moment, the conversion of the next information block begins, the code of the first subblock of which is already written in counter bits 5.

Thus, the device converts in each time frame a fixed duration of a certain number of code-pulse subblocks of the information block into the corresponding pulse width modulated (PWM) signals and the serial transmission of these signals to the communication channel. In this case, the adjacent PWM signals inside the frame are separated from one another by alternating the amplitude (zero and single) pulses of these signals, and the sequence of PWM signals of successive frames are separated by time intervals.

Claims (1)

Invention Formula A device for transmitting information, comprising a first counter, the set input of which is in the device’s TlycK flow, and the first trigger, the output of which is an information output of the device, characterized in that, in order to expand the field of application of the device by ensuring its autonomous operation, he entered a pulse generator, the element And, elements OR, the second - the fourth counters, the second and third triggers, the input of the pulse generator is combined with the installation inputs of the second, third counters and the first inputs of the Vågå - Hilti third elements and connected to the input The device start, the output of the pulse generator is connected to the counting input of the second counter and the first input of the element I, the output of which is connected to the information input of the switch, the first and second outputs of the switch are connected to the counting inputs of the third and fourth counters respectively, the output of the third counter is connected to the installation input 1 15 gamer 1527647 The second flip-flop is the control output of the device, the output of the first SHN element is connected to the first input of the fourth OR element and the control input of the fourth counter, the information inputs and output of which are respectively the information inputs of the device and connected to the counting input of the first counter and the second inputs of the first and the second element OR, the output of the second element OR is connected to the installation input in O of the second flip-flop, the output of which is connected to the control input of the switch, the output of the second counter is soy Inonii to second inputs of the third and fourth OR elements, outputs of which are respectively connected to the input for setting a third flip-flop and a J input of said first flip-flop, the output of the first counter is connected to the setting input of a third flip-flop O whose output is connected to the second input element I.