SU1562922A2 - Device for damping information to telegraph apparatus - Google Patents

Abstract

The invention relates to computing, can be used in computer complexes and is an improvement of the known device according to the author. N 1381527. The aim of the invention is to increase the reliability of information transfer. The goal is achieved by introducing into a known device a level converter, a comparison unit, a control register and a control shift register. 6 Il.

Description

The invention relates to computing, can be used, for example, in computer complexes for outputting information from a computer and is an improvement of the known device according to ed. No. 1381527.

The aim of the invention is to increase the reliability of information transfer.

Figure 1 shows the structural block diagram of the device; on fig2 - the functional scheme of the code conversion unit; FIG. 3 is a functional block diagram of the conversion mode setting; figure 4 is a functional block diagram simulation; Fig. 5 is a functional block diagram of the control unit; 6 is a graph-algorithm of operation of the control unit.

The device (Fig. 1) contains an input register 1, a level converter 2, a unit 3 for setting conversion modes, a simulation unit 4, a shift control register 5, a block. 6 co-processing, control unit 7,

pulse generator 8, shift register 9, control frequency switch 10, control register 11, telegraph unit 12, output switch 13, comparison unit 14, output switch 15, bus with communication to the telegraph unit, device input 17 for connection to the source information output information (computer), device mode input 18, start input 19, input

20 device control modes, output

21 devices for connecting the information source synchronization input, output 22 of the information.

The code conversion unit 6 (Fig. 2) comprises a group of elements AND 23, an encoder 24 and a switch 25.

The conversion mode setting unit 3 (FIG. 3) contains an encoder 26 and a register 27.

The simulation unit 4 (FIG. 4) contains a toggle register 28, an operation mode switch 29, a simulation shift register mode switch 30 and a simulation shift register 31.

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ate

About No. CO N9 ND

 YU

The control unit 7 contains a multiplexer 32, a permanent storage node (ROM) 33 and a register 34.

Input register 1 is used to store data arriving through a block from a computer.

A level 2 converter is used to convert successive current parcels into a serial 10 Iodine with logic levels.

Unit 3 setting the conversion mode, Yi, depending on the code received from the computer command, generates output signals that determine the conversion mode.

The simulation unit 4 serves to form a test sequence, as well as to ensure transmission of this sequence.

The control register 5 serves to convert the serial code B parallel.

The code conversion unit 6, depending on the signals received from the block of 25 Ka 3, organizes the translation or conversion of the code received from the computer.

The control unit 7 provides the formation of signals controlling the operation of the device. 3

The generator 8 pulses generates clock signals that synchronize the operation of the device.

The switch 10 is used to transmit signals that clock the output of the output 3 serial information, depending on the signals at the control input 20 from the corresponding generator output.

Shift information register 9 is intended to convert parallel code to serial.

The control register 11 serves to store information received from the code conversion unit 6 to the input 4 of the shift register 9.

The output switch 13 selects the information transmitted to the terminal telegraph unit .5

Comparison unit 14 is used to continuously monitor for coincidence of bytes of information from the control register 11 and the control shift register 5.

The output key 15 serves to form the tokhovye parcels arriving at the telegraph apparatus 12.

The data required for transmission come from the input 17 of the device. An input 18 for setting the device mode is intended for transmitting to the device input data defining the conversion mode. Input 19 receives the start signal of the device. The control input 20 serves to transmit control signals of the switch 10 "

From the output 21 of the readiness of the device receives a signal indicating the readiness of the device to receive information. Bus 16 is connected to the terminal telegraph unit 12. From the output 22 of the information, a signal is received indicating that the wrong information was transmitted to the telegraph unit 12 during the session of the elements And elements 23 serve to organize the transfer of a byte of information received from the computer to the input of the encoder 24, which serves to convert each received code into an output code and can be implemented using a ROM. Using the switch 25, depending on the signals from block 3, information is transferred to the register 9 either from input register 1 or from the encoder 24. The latter is intended to form signals determining the conversion mode, depending on the signals at input 18 and can be implemented using rom. The register 27 stores the signals determining the conversion mode for the duration of the current transmission cycle.

Tumbler register 28 is designed to set the test information. The switch 29 determines the source of information transmitted to the terminal telegraph unit and enables or blocks the operation of register 31. The switch 30 mode of the shift register is used to set the mode of operation of register 3. Register 31 is designed to convert parallel test information code to serial. The control unit 7 may be implemented as a firmware automaton (FIG. 5). Multiplexer 32 serves to implement conditional transitions. The ROM 33 serves to store a set of microinstructions. Output register 34 is used to store the current microcommand. The information inputs of the multiplexer 32 are connected to the input condition busses of the block 7. The output of the multiplexer 32 is connected to the lower address input of the ROM 33, to the remaining address inputs of which the signals from the register 34 are fed. In each state of the automat to which the selected cell of the ROM 33 corresponds, to the youngest an address input is connected to one of the input signal buses of block 7. The selection of a plug-in bus is made in the microcommand format field. Possible next microcommand format

AMK

AMX

R

UIR

where AMK is the address field of the following microcommand; AMX - the address field of the plug

bus input signals; UPR - field output signals. If an input signal is present on the selected bus, i.e. Log.1, the automaton goes into a state in the lower address bit of which there is a one. If there is no input signal on the selected bus, i.e.: Log.O is present, then the automaton goes into the state in the lower address bit of which there is a zero. For example, let the address field of the following microcommand represent the combination 0011, the field of the connected bus input signals 010. If the input signal is present at the second input of the multiplexer 32, i.e. Log.1, the transition is performed at address 00111; if the input signal is absent, the transition is performed at address 00110. All other conditional transitions are implemented in the same way. To generate the block output signals. 7, horizontal microprogramming is used, i.e., a separate output signal of block 7 is assigned to each time a series of output fields.

6 marked: End - the signal from the start input device 19 of the device in block 7; Zap. WG 9 is a signal arriving at block 19 and 11, allowing recording of information; Ready

output signal

readiness 21 devices; Shift

1G

.

cash coming from block 27; 1 TETRADA, 2TETRADA - signals arriving at block 23; Start - a signal, stepping from the start input 19 of the device to block 7; Zap.RP - signal arriving at the input of the device 17 and allowing entry to the register 1; Comp. - a signal arriving at the control Yu input of block 14 from block 7.

The device works as follows.

In the initial state, all registers are set to zero (not shown). 5 The operation of the device is carried out in the Operation, Inspection and Monitoring modes. The presence of the Operation or Test modes is determined by the position of the switch 29. The presence of the Mode 20 Control is determined by the signal at the input 20 of the device.

In the Operating mode and in the absence of the Monitoring mode, the information from the source of information is recorded on the telegraph apparatus 25 12. In this case, depending on the signals at the output of the register 27, the incoming information can be converted, followed by 30 registration or registration of information without its conversion.

In the Operation and Control modes, information is received from the information source and transmitted to the bus 16 at an increased frequency in order to check the generation and transmission of serial information along the entire path of its follow-up. The telegraph unit 12 is turned off.

40

In the Check mode and in the absence of the Control mode, the information specified with the toggle register 28 is recorded on

45 telegraph apparatus 12.

In the Check and Control modes, the information is transmitted with an increased frequency specified by a toggle register 28, with

50 to verify the generation and transmission of sequential information. The telegraph unit 12 is turned off. The Start signal coming from the input 19 of the device is carried out in

the signal 9 arriving at block 9 and 5, the device starts up at 55 times, then the information is shifted to the decisive shift in the output block 21 of the device for connecting 9 and 5; Label - a signal from block 8 with a frequency of telegraphic dressing; Conversion - by the signal source synchronization information source a readiness signal is generated.

start up the device, then at the output 21 of the device to connect

The information source synchronization input signal is generated.

From the input 8 of the device to the input of the encoder 26 receives information from the source of information. At its outputs, signals are generated defining a conversion mode, which are written to register 27.

Signals from the output of register 27 are fed to the inputs of switch 25. Depending on the signals at the output of register 27, either the outputs of input register 1 are connected to the information inputs of register 9 via the switch 25 (when transmitted without conversion) or the outputs of the encoder 24 (when transmitting with conversion). In the process of transferring, the data coming from the information source from the input of block 7 is initially written to input register 1, and further on the signals from block 7 through elements 23 to the input of the encoder 24 are received gradually. From the output of the switch 25, according to the signals from block 7, the information is recorded in register 9.

Further, depending on the signal at the device input 20, the corresponding output of the generator 8 is connected to the input of the control unit 7. If there is a signal at the input 20, indicating the need to form a telegraph parcel with an operating frequency ($ 0 Hz), to the input of the control unit 7 through the switch 10 connects the output „of the operating frequency fp of the generator 8. From the output of the register 9, the operating frequency is transmitted bit by bit to the input of the output switch 15 via the output switch 13, and then to the bus 16 and the telegraph unit 12.

In the process of checking and shaping and transmitting the entire path of serial information, the signal at input 20 of the device is connected to the input of block 7 of the output of the control frequency of the generator 8 fk. In this case, the bit-wise transmission of information with the frequency fljt from register 9 is performed via output switch 13 and the key 15 to the bus 16. The telegraph device is turned off.

After transmitting the consecutive bit of the information symbol, the next tetrad arrives at the input of the encoder 24 via the elements And 23 at the input of the encoder 24. After the transfer of this tetrad, a request is made for the transfer of the following information from the source

data byte and write it to the input register 1 with the subsequent transfer to the bus 17 is similar to that described.

In the absence of the need to convert information (as evidenced by the appearance of a corresponding signal at the output of register 27), the data from the output of register 1 is fed through switch 25 directly to the input of register 9. The control signals from block 7 write to register 9 and then work device is similar to that described.

In the Test mode using the toggle register 28, test information is set, which, if there is a corresponding signal from the output of the switch 30, the signal from one of the outputs of the generator 8 (depending on the signal at the device input 20) is written to the register 31.

Using the switch 29, the output of the register 31 is connected to the input of the output switch 15. The signal from the output of the switch 30 sets the mode of the shift of the register 31. the control frequency fK of the generator 8 through the switch 10 of the control frequency to the input of the register 31. Next, with the frequency fK, the specified symbol is transmitted sequentially. Since the output and input of the serial input of register 31 are connected, after the transfer of stop sprinkling, the next starting parcel of the specified symbol is transmitted and, thus, the specified symbol is cyclically transmitted at a frequency convenient for visual observation of the formation and transmission of serial information. Similarly, if there is a corresponding signal at the input 20, the transmission of a given serial code with the frequency of a telegraph parcel from register 31 to the telegraph unit 12 is provided.

In addition, in the Operation and Monitoring or Operation modes, the information entering the telegraph unit 12 is monitored.

In the Operation or Operation and Monitoring modes, information is monitored for reliability upon transmission to the bus 16 of communication with the telegraph unit 12. Simultaneously with. recording information from switch 25 to register 9, the signal from block 7 information is recorded in register 11. The output of register 9 with a working frequency or higher increases the bit-by-bit transmission of information to the input of key 15 through switch 13, then to bus 16 and telegraph apparatus 12 and simultaneously through the converter 2 to the input of register 5. The latter simultaneously with the register 8 shifts information in the opposite direction under the control of a similar signal from block 7. After the last bit is transferred from the register (or after recording and the last bit in register 5) the signal from block 7 compares in block 14 two bytes of information received at its inputs from registers 11 and 5. In the case of a mismatch of two bytes of information in block 14, a signal of information appears, informing the source in

0

five

formations that the information is received by the telegraph apparatus with a failure.

Claims (1)

Invention Formula A device for outputting information to a telegraph apparatus according to the author of CC L3 1381527, in order to increase the reliability of information transfer, a level converter, a comparison unit, a control register and a control shift register are inserted into the device, and the output of the output key is connected via a level converter with information input control shift register, clock input connected. to the third output of the control unit and the clock input of the control register, 0 whose information input is connected to the output of a code conversion unit, and the output to the first information input of the comparison unit, the second information input and the data input input are connected respectively to the output of the control shift register and the fourth output of the control unit, the output of the comparison unit is the output of the device information . 1 from block y of, flea in Ivlokoyu. nineteen Izlokaz 31 33 "LV m gush Compiled by V. Vertlib Editor N. Rogulich Tekhred L. Serdyukova Proofreader S. Cherni Order 1066 Circulation 561 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035., Moscow, Zh-35, Raushsk nab. 4/5 Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 Subscription