SU425193A1 - DEVICE FOR DISPLAYING INFORMATION NL SCREEN} - ELECTRON BREAD PIPE - Google Patents

Description

one

The invention relates to automation and computer technology and can be used in devices for outputting alphanumeric information to the screen of a cathode ray tube.

Devices are known for displaying symbols on a screen of a cathode ray tube, containing a matrix of symbols consisting of switched dividers X and K, connected to a distributor, assemblies connected to the inputs of the addition and subtraction units, and through a decipheror to the receiving register. analogue converters X and Y with summing amplifiers connected via integrators X and 7, respectively, to the addition and subtraction unit and sine-cosine function converters connected to the inverters.

The proposed device differs from the known ones in that a computing unit and an adjustable delay unit are inserted in it, the outputs of the receiving register are connected to a distributor connected to the computing unit through serially connected computing unit and the outputs of the sine-cosine functional converters are connected to one from the inputs of the switched dividers X and Y directly, and with others through inverters.

This makes it possible to increase the speed of the device.

The drawing shows a block diagram of the proposed device.

The device contains a receiving register 1, a decoder 2, digital-to-analog converters 3 (X.) and 4 (K), a matrix of symbols 5, sine 6 and cosine 7 functional converters, switched dividers 8 (X and 9 (U), inverters 10, an adjustable delay unit 11, a computing unit 12, a distributor 13, assemblies 14, an addition unit 15, a subtraction unit 16, integrators 17, summing amplifiers 18 and 19, a start-up bus 20.

The device works as follows.

With the arrival at block 11 of the bus 20, the pulse of the beginning of the formation of a symbol at the output 21 of the receiving register 1 appears, the symbol code and the position codes of the symbol on X - bus 22 and on Y - bus 23. In accordance with the symbol code on one of the output buses decoder 2 produces a pulse, which connects the corresponding matrix 5. The supply voltages for switchable dividers 8 and 9 are the output voltages of the sine and cosine function transducers 6 and 7 and the inverters 10, and the output voltage is determined at their output on the bus 24,

proportional to the required angle of the symbol. The character position codes for X and K are fed to computing unit 12, from whose output an analog signal is taken, which is proportional to the value Y () + (Yo-Y) 2, where X (,; УО and Хь FI are the coordinates of the preceding, his and subsequent symbols .

An analog signal is generated at the output of block 12 by the signal of the termination of the formation of the previous symbol, which is fed through the bus 25 from the th output of the pulse distributor to the control input of the computational block 12 and corresponds to the timing of the formation of the previous symbol. The pulse of the beginning of the formation of a sign that arrived at the input of block 11 is delayed by a time proportional to the signal from block 12, and then starts the distributor 13, the output pulses of which are sent to 26 on the inputs of the matrix of all symbols and the backlight matrix. At the outputs of the switched matrix voltage divider, stepwise voltages are formed, which are fed to the assemblies 14 via tires 27 and after passing the addition blocks 15 and the subtraction 16 are integrated by integrators 17. It is advisable to use operational summation amplifiers as the addition and subtraction blocks. From the outputs of the integrators 17, the functional voltages corresponding to the shape of the symbol are fed to the inputs of summing amplifiers 18 and 19 of channels X and Y, respectively, where these signals are summed with the voltages determining the position of the symbol on the screen.

From the outputs of the summing amplifiers, the generated signals that characterize the position of the symbol, its configuration and angle of rotation, are fed to the deflection system of the electron-beam tube (not shown in the drawing).

Subject invention

A device for displaying information on the screen of a cathode ray tube, containing a matrix consisting of switched dividers X and Y, connected to the distributor, assemblies connected to the inputs of the addition and subtraction units, and through a decoder to the receiving register connected via digital-to-analog converters X and Y with summation amplifiers connected via integrators X and Y, respectively, to an addition and subtraction unit, sine-cosine function converters associated with inverters, characterized in that When the device speeds up, a computing unit and an adjustable delay unit are entered into it, the outputs of the receiving register are connected to a distributor connected to the computing unit through serially connected computing unit and the adjustable delay unit, and the outputs of sine-cosine functional converters are connected to one of the switches dividers X and Y directly, and with others through inverters.