SU739586A1 - Device for displaying data on the screen of crt - Google Patents

Description

The invention relates to the field of automation and computer technology and can be used in devices for outputting information from a computer.

Known devices for displaying information on a CRT screen, contain- ^! our software sensor, Character selection unit, memory and formation unit, inverter, AND elements, input register, paraphase amplifiers for key management, binary counter of the number of points, matrix decoder, distributor, powerful inverters, transistor key coordinates of points, gates, passing coordinates of the points on the voltage dividers _f , diode signs of the sign selection and the standby pulse generator £ 1] and [2].

The disadvantage of these devices is the presence of memory, made either by circuit or by software, and _{d is} enough - a complex hardware implementation.

'The closest in technical essence and invention is a device for displaying information on a CRT screen containing a receiving register, the input of which is connected to a pulse generator and a pulse distributor, and the benefits are to a modulation unit, two voltage drivers, the inputs of which are connected to the output of the pulse distributor and a counter, the output of which is connected to the input of the decoder, the output of which is connected to the first inputs of the blocks of elements And, the second inputs of which are connected to the outputs of the first and second shapers on voltage, and outputs - to the inputs of the first and second adders, respectively, and amplifiers connected to two deflecting CRT systems [3].

The disadvantage of this device is its complexity.

The aim of the invention is to encroach on the device.

This goal is achieved by the fact that a trigger and two switching elements 3 739586 4 are introduced into the proposed device, the first inputs of which are connected to the trigger output, the second inputs to the outputs of the first and second adders, respectively, and the outputs to the corresponding inputs of the amplifiers of the CRT rejective systems. The trigger input is connected to the decoder output.

Pa fig. 1 shows a block diagram of a device for displaying information on a CRT screen; in FIG. 2 is a timing diagram of its operation.

The device СО keeps the pulse distributor 1, the first 2 and second 3 voltage drivers, counter 4, decoder 5, trigger 6, blocks of elements And 7 and. 8, a pulse generator U, adders 10 and 11, switching elements 12 and 13, a reception register 14. amplifiers 15 and 16 and a modulation unit 17.

The device operates as follows.

Under the influence of pulses arriving from the pulse generator 9 to the pulse distributor 1 at the outputs of the formers 2 and 3, voltages of trapezoidal and triangular shapes are formed (see Fig. 2). Simultaneously, from the pulses of the pulse distributor 1 by a two-digit counter 4 and by the decoder 5, intervals ₅ Т ₂ ,, Г Г are formed (at the output of the decoder 5), on which sequences of deviation voltages are formed using blocks of elements 7 and 8 and adders 10 and 11. Acting through switching elements 12 and 13 to amplifiers 15 and 16 connected to the deflecting systems, a sequence of deflecting voltages forms the first half of the symbol on the CRT screen during the course of Twelve microtacts.

The second half of the symbol * is formed during the second twelve microtacts. In this case, the second pulse is supplied to the counting input of trigger 6 from decoder 5. ” The trigger throws a state. Signal: from the trigger output goes to the inputs of elements 12 and 13. Under the influence of this signal, a sequence of deflecting voltages appears on the outputs of these elements (Fig. 2), which is fed to amplifiers 15 and 16.

After the time of the second switching interval, the process corresponding to the first switching interval, etc. is repeated.

⁵ Thus, a generalized figure (polygramMa) is formed on the CRT screen, from which this or that symbol of the alphanumeric alphabet 10 is highlighted by arriving at the modulation block 17 from register 14 of the code of the symbol to be displayed synchronously with the pulses of the pulse distributor 1.

Claims (3)

 ta% the first inputs of which are connected to the il gstxofly trigger, the second inputs to the outputs of the first and BTOfkjixt totalize, and the outputs to the corresponding inputs of amplifiers of the CRT deflection systems. The trigger input is connected to the decoder output. On . 1 shows a schematic diagram of a device for displaying information on a CRT screen; in fig. 2 - temporary -. j arpaMMa epe ..,.,. ,,,,, .. The device contains pulse spreader 1, first and second 3 voltage formers, counter 4, decoder 5, trashter 6, blocks of elements I 7 and 8, general-mountain pulses 9,: adders 10 and 11, switching elements 12 and 13, receiving register 1, amplifiers 15 and 16, and modulation unit 17 The device operates as follows, l., time. Under the action of pulses coming from the pulse generator 9 to the spreading pulse distributor J. At the outputs of formers 2 and 3, trapezoidal and triangular forms are formed {see FIG. 2). At the same time, from impulses of the pulse distributor 1 by a 2-bit counter 4 and a decryptor, formats intervals T, 2 5 T. (at the output of the decoder 5), on which using blocks of elements And 7 and 8 and adders 10 and 11 form a sequence of voltages rejected P6s: via switching elements 12 and 13 on amplifiers 15 and 1b, with Dinantse with deflecting systems, the sequence of opening voltages forms the first half of the symbol on the screen of a CRT during 1-1-1. The second half of the SYMBOL of f6p ofohyts during the second twelve minutes of the photo session. In this case, a second impulse arrives at the counting input of trigger 6 from desifrather 5. The trigger flips the ifsT to the one state. The signal from the trigger trigger goes to the inputs of the elements 12 and 13. Under the influence of the sfpro signal on the outputs of these elements, a sequence of deflection voltages appears (Fig. 2), which goes to the amplifiers 15 and 16. After the second switching interval, the repetition There is a process corresponding to the first switch interval, etc. Thus, a generic figure (polygram) is formed on the screen of a CRT, from which a character of the alphanumeric alphabet is highlighted by entering the block of the displayed symbol in synchronization with the pulses of the block modulator 17. Inventory formula Device for displaying information on the screen of a CRT containing the receiving register, the input of which is connected to the pulse generator and the distributor of pulses, and the output to the modular unit, two voltage drivers, whose inputs are connected to you The distribution of the IMTULS and ETCHES, the output of which is connected to the input of the decoder, the output of which is connected to the first inputs of the AND blocks, the second inputs of which connect to the outputs of the first and second voltage formers, and the outputs to the inputs of the first and second adders, respectively, amplifiers, with two diverting CRT systems, characterized in that, in order to simplify the device, a trigger and two switches of digital elements, the first inputs of which are connected to the trigger output, are entered into it, the second inputs are connected to moves the first and second adders, respectively, and outputs to the respective inputs of the CRT deflection amplifiers systems, Tjimrepa input connected to the output of the decoder. Sources of information accepted by the 1st in the United States under examination 1. US Patent Ng 342/6344, cl. 340-324, 1969. 2. Reinberg MG Formation of signs on the screens of EPT, M., Energie, 1970. 3. Certificate of authorship on application no. 2392694 / 18-24, cl. Q06F 3/14, 08/04/76 (prototype). a 6 6 -iTrli - t S te tr tg ts t, a ill tfi tiit, if / U / f1-v - fOM ./ four Jn -IiЖ -and 11) 1 ./ “I11 - (- T