SU1156118A1 - Device for editing alphanumeric characters on screen of cathode-ray tube - Google Patents

Abstract

A DEVICE FOR EDITING ALPHABET-1SCHFIRE INFORMATION ON THE SCREEN OF THE ELECTRON-RAY TUBE, containing a control unit, the first input and the first and second outputs of which are connected to the output of the position counter and the first and second inputs of the comparison unit, the third input of which is connected to the first output of the position counter, and the first and second outputs of the reference unit, the third input of which is connected to the first and second outputs of the comparator, the third input of which is connected to the first output of the position counter, and the first and second outputs of the comparator The input of which is connected to the first output of the AND block, the second input of the control block is connected to an alphanumeric keyboard, characterized in that, in order to increase the speed of the device, it is Holds the word reception register connected in series, the first input of which is connected to the alphanumeric keyboard, the second output to the first input of the AND block, the trigger, the AND element, the second input — which is connected to the third output of the control unit, the pulse counter, the second output of which is connected to the second inputs of the register of reception of the word and the trigger, and the decoder, the output of which | connected to the second input of the unit (Element I, connected to the alphanumeric keypad, the second output and the input of the meter position counter of the maker are connected to the third input and the fourth output of the control unit.)

Description

1 The invention relates to computing and can be used in information input / output devices made using CRT. The aim of the invention is to increase the speed of the device. Figure 1 shows the structural diagram of the proposed device; in fig. 2 - structural diagram of the counter, marker positions; Fig. 3 shows the structures 1 on the control unit circuit. The device comprises a control unit 1, an alphanumeric keyboard 2 consisting of a keypad field 3 and an encoder 4. The keypad 2 output is connected to the input of the word reception register 5. The output of register 5 is connected through block 6 of the elements And to the input of the encoder 4 and the input of the trigger. The output of the trigger 7 is connected to the first input of the element 8, the second input of which is connected to the control unit 1, and the output to the input of the counter 9 pulses. The output of counter 9 pulses is connected to the inputs of the decoder 10 The output of the decoder 10 is connected to the second inputs of the AND block, the output of which is connected to the input of the encoder 4. In addition, the output of the block 6 of AND elements is connected to the input of the counter 11 marker positions, which are interconnected control unit 1, both directly and through unit 22 comparison. The marker 11 position of the marker contains successively connected the generator of 13 single pulses, the trigger 14, the element 15, the counter 16, the decoder 17 and the counter 18 of the marker. The second input of the element 15 is connected to the output of the control unit 1, the first output of the decoder 17 to the input of the control unit 1, the second output to the counting input of the counter 18 of the marker. The signal from the third output goes to the setting O of the trigger 14 and the counter 16. The output of the counter 18 the marker is connected to the comparison unit 12; the second input of the comparison unit 12 is connected with the output of the control unit 1. The control unit contains a generator of the 19 pulses connected to the counting input of the time counter 20, the output of which is connected to the input of the decoder 21. One of the outputs of the decoder 21 is connected to the counting input of the familiarity counter 22. The output of counter 22 of familiar 182 is connected to the input of block 11 of the marker position counter. The second output of counter 22 is familiarized with AND 8 and block 12 comparing the marker positions. The marker position comparison unit 12 contains the two numbers comparison unit 23 connected in series, the AND 24 element, the second input of which is connected to the output of the control unit 1. In addition, the control unit 1 includes the editing trigger 25 and the character trigger 26, the setup inputs of which are connected to the output of the decoder 17 of the block 11 of the marker position counter. The output of the trigger 25 is connected to the input of the element AND 27, the second input of which is connected to the output of the element 24 of the block 12 comparing the positions of the marker. The output element And 2 / is connected with the input of the trigger 28 of the recording mode in the FOSU (ferrite random access memory), the Output of the trigger 26 is connected to the input of the element And 29, to the second input of which the output of the encoder 4, the keypad 2 is connected. The output of the trigger 28 of the recording mode in the FOZU is connected to the input of the element I 30, the second input of which is connected to the output of the decoder 21, and the output to the synchronization input of the numeric register 31. The output input of the 32 is connected to the installation input of the numeric register 31, one input of which is connected to the output of the element29, and the second - the mode with the output latch 28, a write "yuzu. The output of the numeric register 31 is connected to the input of the element 33, the output of which is connected to the input of the numerical register 34. To the second input of the element 33 is connected the output of the trigger 28 of the write mode in the FIZ, which is also connected to the input of the element 35. it is connected with the output of the decoder 21, and the output is connected with the synchronization input of writing the numerical register 34 of the FOZU. The output of the element 30 is connected, in addition, with the installation inputs to the flip-flops 25 and 26. One of the outputs of the decoder is connected with the input of the address register 36 of the FIZM. The device works as follows. In control block 1, the clock frequency from the generator of 19 clock pulses arrives at the time counter 20. The output of time counter 20 is connected to the decoder 21 of time counter 20, at the outputs of which a sequence of pulses is generated, ensuring the reception of a code of the sign to a specific address of the FIZU and preparation for receiving the next sign (cycle). A time counter 20 determines the time required to edit a single character. Having completed the processing of a character one by one, the decoder 21 last bars Increases the synchronous code contained in the counter 22 familiarity and the address register 36 of the PHOS, by 1, sets the counter 20 time to 0 and starts processing the sign located on the next familiarity, Writing the sign to The PHOS is carried out in the place indicated by the marker, the code from the output of the counter 22 familiarity arrives at the input of the unit 23 comparing two numbers of the unit 12 comparing the positions of the marker. The code from the marker 18 of the marker of the block 11 of the marker positions of the marker is fed to the input of the comparison unit 23. The impulse from the output of the decoder 21 polls the element And 24 connected to the output of the unit 23 comparing two numbers. When codes are equal on the counter 22 familiarity and on the counter 18 of the marker, the signal from block 12 compares the position of the marker to the input of the element I 27, After the counter 22 familiarity counts all the familiarity, a pulse of the end of the frame is generated at its output Em counter 22 familiarity and starts with a new frame. Thus, the comparison pulse at the input of the AND 24 element of the marker position comparison unit 12 is generated once per frame. In word-by-word editing, the operator presses a button with the selected word and then the device, without further intervention by the operator, ensures editing the given word by element, each word is edited within one frame, and the first word is typed into the place indicated by the marker before the editing process begins. As the first character of the word is recorded in the FOSU digital register 34, the device moves the marker to the next place, the next character begins and the words in the place of the new position of the marker, etc. According to the Research Institute of Editing the Whole Word, the overflow pulse of the counter 9 sets the trigger 7 and the register 5 into the device. The device is ready to edit the new word. When the operator presses a button with a selected word from the keypad of the keyboard 3, a signal is sent to the word reception register 5, the sign of this word is recorded in a specific register trigger 5. The signal from the register 5 output sets the trigger 7 (word reception), from which permission is given to the passage of an end pulse from the counter 22 familiarity of the control unit 1. through the AND 8 element to the counting input of the counter 9 pulses. The output of the counter 9 is connected to the input of the decimator 10, the outputs of which produce a sequence of pulses for alternately polling the elements AND entering block 6, the second inputs of the elements AND are connected to the output of the register 5. Elements AND block 6 are switched in such a way that each of them provides passing a signal only a certain sign of a given word. Signals of the same signs, included in different words, from the outputs of the elements And are combined on assemblies or from the output of block 6 are transferred to the block of the encoder 4 to produce the code of this sign. The order in which signals arrive at the encoder unit 4 is determined by a sequence of pulses from the outputs of the decoder 10, which enter the interrogation elements AND entering block 6. In addition, the signal from the output of block 6 enters the block 11 of the marker position counter to start the generator 13 single pulses. The pulse from the output of the generator 13 sets 1 trigger 14, from the output of which the element 15 enters permission to pass the end of the frame through element 15 to counter 16. The output of counter 16 is connected to the input of the decoder 17. The clock pulse from the first output of the decoder 17 block 11 of the marker position marker sets to 1 edit trigger 25 and trigger 26 characters. The output of the trigger 25 of editing gives the input element And 27 permits potential. With the equality of the codes on the counter 22 familiarity and the counter 18 of the marker, the comparison pulse from the comparison block 12 is fed to

the second element And 27, at the output of which a signal appears that sets the trigger 28 of the write mode to the FZU in 1. From the trigger output of the 26th sign, the permitting potential arrives at the first input of the And 29 element, the sign code arriving at the encoder 4 comes to the second input. As a result, the sign code from the encoder 4 enters the And 32 element as an input. Since the trigger 28 of the recording mode in the FOLLOW is set then, from its output, the resolution enters the AND 32 element for passing the sign code to the installation inputs of the numeric register 31.

The next clock pulse from the decoder 21 through the element 30, opened on the second input of the trigger 28 of the write mode in the FZU, synchronizes the recording of the sign code in the numerical register 31. In addition, the pulse from the output of the element 30 sets the editing trigger 25 and trigger 26 characters. The code from the numeric register 31 through the element 38, opened by the second input by the trigger 28 of the write mode in the FOZU, is fed to the setting inputs of the numerical register 34 of the FOZU. The next clock pulse coming from the decoder 21 through the element 35, to the second input of which PASSES: resolving potential from the trigger 28 of the write mode to the wake pattern, synchronizes the rewriting of the sign code from the numeric register 31 to the numeric register 34 of the HANDLE, the cell address of the HANDLE in this case corresponds to the position of the marker on the screen of the cathode-ray tube, since the recording takes place during one cycle of the time counter operation with equal codes in the familiarity counter 22 and the counter 18 of the marker,

From the output of the decoder 21, a clock pulse is applied to the setting in O of the trigger 28 of the write mode in the FOZU; transition to the next address The last clock of the decoder 21 time counter is set to O. The decoder 10 after a certain time provides the appearance at the output of block 6 of the signal from the next word sign, the editing process is repeated. After editing the last digit of the word, the pulse of the overflow of the pulse counter 9 sets to its initial state trigger 7 and the word reception register 5, preparing them to receive the new word. Thus, word-by-word editing of information is carried out by pressing a single button by the operator (in a known device, editing the word can be carried out by the operator only by alternately pressing buttons symbolizing letters or signs to sequentially enter them into the PHZU).

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Claims (1)

DEVICE FOR EDITING ALPHABETAN-DIGITAL INFORMATION On the screen of an electron beam, containing a control unit, the first input and the first and second outputs of which are connected respectively to the output and the first and second inputs of the comparison unit, the third input of which is connected to the first output of the marker position counter, the first input of which is connected to the first output of the unit elements And, the second input of the control unit is connected to an alphanumeric keyboard, characterized in that, in order to improve the speed of the device, it contains serially connected word reception register, the first the stroke of which is connected to the alphanumeric keyboard, the second output is to the first input of the block of elements And, the trigger, element And, the second input is connected to the third output of the control unit, a pulse counter, the second output of which is connected to the second inputs of the word reception register and trigger , and a decoder, the output of which) is connected to the second input of the And block of elements connected to the alphanumeric keyboard, the second output and the input of the marker position counter are connected to the third input and fourth output of the control unit. > 1156