SU588654A1 - Discrete information transmission arrangement - Google Patents

Description

one

The invention relates to telecommunications and can be used in telegraph equipment.

A device is known for transmitting discrete and “ph) rMaci, and containing a master oscillator connected to a start-stop divider, to the control input of which and in the distributor, the output of a start-stop trigger connected to the output of the first OR element is connected to one input of which the pulse former is connected: directly, and to another input - via a serial connection of the single flashing trigger and the first element I, and the output of the start-stop divider is connected to the corresponding inputs of the bodies connected to the outputs via a dial-up block with the output pulse shaper and decipher register combinations, and the corresponding inputs of the dial-up block are connected to the outputs of the recording key block, whose inputs are provided with informational 1SI pnala 1.

However, in the known device for transmitting discrete information because of the long duration of the stop parcel, the information transfer rate is low.

The purpose of the invention is to ensure the transmission of information both with and without exception and with no stop parcels in the continuous transmission of character codes. For this purpose, a trigger for eliminating a stop burst, three AND elements, and a second element are introduced into the device for transmitting discrete information.

OR, and a mode switch and an additional distributor connected by inputs to the start-stop divider output. The inputs of the second element I are connected to the output of the blocking trigger, the output of the corresponding distributor discharge and the output of the mode switch, the output of the second element I is connected to one input of the stop sending exclusion trigger, the input of the initial state ycTaiHOBB is connected to

output of the corresponding bit of the distributor, another input of the lock trigger and an additional input of the key block for the entry. The zero output of the stop exclusion trigger is connected to one input.

the third element And, and the single output - with the input of the fourth element And, to the second inputs T | retego and the fourth element And connected the output of the last bit of the distributor. The output of the third element AND is connected to the input of the additional distributor and the additional input of the dialer, the output of the fourth element AND is connected to one input of the second OR element, to another input of which the output of the additional distributor is connected, and the output of the second element OR is connected to the start of the start-stop trigger and to another the input of the first element I. The output of the decoder register combinations corresponding to the combination "all zeros, connected 5 to the auxiliary input (VOUT the element I. And in the drawing before The structured electrical circuit of the device for transmitting discrete information is set in. The device contains a master oscillator 0 1 connected by a start-stop divider 2 ico, to the control input of which and the input of the distributor 3 the output of the start-stop trigger 4 connected to the output of the first element 5 is connected to one the input of which is connected directly to the output of the input shaper b of pulses, and to another input it is connected through the interlocking trigger 7 of the interlocking and the first element And 8, with the output starting the new 20 splitter 2 is connected to the corresponding inputs of the distributor 3 connected to the outputs via a dialer 9 with an output driver 10 pulses and a decoder 11 register combos, and the corresponding 25 inputs of the dialer 9 are connected to the outputs of the block; In which data signals are sent, as well as a stop parcel exclusion trigger 13, three elements AND 14, 15, 16, a second 30 element OR l7, a mode switch 18 and an additional distributor 19 connected by inputs to the start-stop divider 2. B the strokes of the second element I 14 are connected to the output of the trigger 7, the output of the co-35 of the corresponding discharge distributor 3 and the output of the switch 18, the output of the second element I 14 is connected to one input of the trigger 13, the input of which is installed1К1И which is connected to the output of the corresponding distributor 3, another trigger input 7 and an additional input of block 12. The zero output of the trigger 13 is connected to one of the third element And 15, and the single output - to the input of the fourth 45 element And 16, to the second inputs of the third and fourth elements And 15, 16 The key is the output of the last bit of the distributor 3. The output of the third element I il5 is connected to the input of the additional distributor 19 and 50 by an additional input of the dial-up unit 9, the output of the fourth element AND 16 is connected to one input of the second element OR 17, the output of the additional distributor 19 is connected to the other input, and the output55 of the second element OR il7 is connected to the setup input of the start-stop trigger 4 and to the other input of the first element AND 8. The output of the decoder .11, corresponding to the combination “all zeros, is connected to additional-60 te flax (INPUT of the second element And 14. The device operates as follows. A. A normal transmission mode with a stop element is set by switch 18 to the contact IC "of zero polarity, with the second element AND 14 being closed for the passage of. Logical signals" 1. The trigger 13. Is CONSTANTLY "is; in the initial state, connected through the element 15 and the output of the distributor 3 to the input of the additional distributor 19, i.e.: stop transmissions of the transfer H) with each code combination. B. The mode with automatic exclusion of the stop parcel is set by the switch 18 to the position to the contact with “single polarity. In the initial state, the output driver 10 transmits a stop zeroity to the line. Upon receipt of the first character from the thinning of information, the start-stop trigger 4 and iiperrep 7 switch to the working state and the device forms the start and code packets. With the middle of the starting signal, the signal "1 from 0.5 to-ro of the output of the distributor 3" records the code combination into the dialer 9; trigger 7 returns the iB initial state, thereby removing the blocking signal to the source of information. Then, if IB passes the next character from the source of information until the last code element is transmitted, trigger 7 switches back to the operating state and the signal "I is fed" to the inputs of the neipBoro and the second element AND 8, 14. With the arrival of the signal "I from (/ g + 0.5) to-ro of the output of the distributor 3, which corresponds to the middle of the last code message, and if there is no prohibitive signal from the decoder 11, the output of the second element 14 and the signal" 1 that switches the prigger 13 from the initial state to the working state, from its output the sipnal "1 enters the input of the element 16. With the arrival of the signal "1 from (" +) to-ro output of the distributor 3, which corresponds to the end of the transmission of the last code element, the output of the fourth element And 16 appears sipnal "1, which through the second element OR 17 sets the starting state of the start-stop trigger 4. From the same signal, through the first element And 8, a pulse signal is started at the beginning of a new cycle and the start-stop trigger 4 switches back to the operating state, the starting signal of the next combination is formed in the line, and the stop parcel is excluded, by a signal "1 from 0.5 to-ro of the output of the distributor 3, the triggers 7 and 13 are switched to the initial state. In the device, all symbols continuously transmitted from the information source are transferred. Except for the symbol "all zeros." When the symbol "all zeros from the output of the decoder 11 is received, the signal" 1 is fed to the prohibitory input of the second element 14, prohibiting switching of the trigger 13. With the arrival Signal "1 from (+1) to-ro output of splitter 3 signal" 1 appears at the output of the third element 15, which goes to an additional distributor 19, which forms a stop message. Then, the signal from the output of the additional distributor 19, which corresponds to the end of the stop parcel, sets the utartart trigger 4 to the initial state through the second element OR 17.

When transmitting the last character of the continuous sequence, the trigger 7 does not switch to the operating state, thereby the second element And 14 is also closed, and the trigger 13 remains in the initial state; A stop message is formed in the line.

A device for transmitting discrete information without a stop element allows you to increase the transmission speed (up to 25%) over Kc, communication lines without increasing the speed of telegraphy, automatically eliminates the stop parcel while continuously following the characters one after the other, o-be-transmitting the code with stop messages and retains the value of the starting message.

Claims (2)

1. A device for transmitting discrete information containing a master oscillator connected to a sortstop divider, to the control input of which and the distributor input the output of the start-stop trigger connected to the output of the first OR element is connected, to one input of which the output of the input pulse shaper is connected directly and to another input, through the interlocking trigger and the first element AND, the start-stop divider output is connected to the corresponding distributor inputs, Ozykhodami through a dial-up unit with an output pulse shaper and decoder register combinations, and the corresponding inputs of a dial-up unit are connected with the outputs of the recording key block, and the inputs of which are given information signals, characterized in that to provide information transfer both with and without exclusion of stop messages during continuous transmission of the character code, a stop message exclusion trigger, three AND elements, a second OR element, as well as a mode switch and an additional distributor connected by inputs to the start-stop divider are introduced, the inputs of the second element And are connected to the output of the blocking trigger, the output of the corresponding bit of the distributor and the output of the mode switch, the output of the second element And is connected to one input of the trigger pa eliminate stop sending entrance the initial state of which is connected to the output of the corresponding distributor bit, another input of the blocking trigger and an additional input of the record key block, the zero output of the exclusion trigger trigger is connected to one input of the third element And, and the single output to the input of the fourth element And, to the second the inputs of the third and fourth elements And connected (the output of the last bit the distributor, the output of the third element And is connected to the input of the additional distributor and an additional input of the dialer, the output of the fourth element And is connected to one input of the second element OR, to the other input of which the output of the additional distributor is connected, and the output of the second element OR is connected to the new input of the start-stop trigger and to the other input of the first element I. 2. The device according to claim 1, characterized in that the output of the decipher register register, corresponding to the combination of "all zeros, is connected to the auxiliary input of the second element I. Information sources, taken into account in the examination 1. Principles of construction of electronic telegraphs. Ed. B. P. M. Terentyev, “Svy, 1973, p. 30-38.