SU932530A1 - Information display device - Google Patents

Description

(54) DEVICE FOR THIS AGREEMENT OF INFORMATION

The invention relates to WELECHANE TECHNOLOGY and can be used to create display devices. A device for displaying information is known, comprising a light pen, a signal generation unit of a sleep pen, vertical and horizontal scanning counters, a mode switch and an AND 1 element. The closest in technical essence to the present invention is a device for displaying information containing a synchronization unit, a control unit, a light pen optically connected to a CRT screen, addressable AioK, a memory unit, a modulation unit 2. The main disadvantage of the known devices is the ability to edit only indicated light pen element of the image. The purpose of the invention is to expand the field of application of the device by allowing the information to be edited by groups of image elements united by a common feature. The goal is achieved in that a device for displaying information comprising a synchronization unit connected to a deflection system of a cathode ray tube (CRT), a control unit connected to a light pen optically coupled to a CRT screen, and connected to an address unit connected to a control unit, which is connected to a modulation unit connected to a CRT modulator, an editing tag memory unit is inserted, the inputs of which are connected respectively to a synchronization unit, a control unit memory unit, the adder, the first input of which is connected to the output of the memory block of the editing features, the second input — to the control unit, and the register, the first input of which is connected to the light pen, the second input — to the memory unit connected to the third input the adder, the fourth input of which is connected to the output of the register, and the output of the adder - to the modulation unit. The drawing shows a block diagram of the proposed device. The device contains a control unit, an editing feature memory block 2, an address block 3, a block

4 modulations, an adder 5, a register 6, a memory block 7, a light pen 8, a cathode ray tube 9, and a synchronization block 10.

At the beginning of the frame, according to commands from control unit 1, synchronization unit 10 and address unit 3, sequential viewing of information recorded in memory block 7 begins, which enters the sign memory block 2 as the cell address of this block. In the cells of information sign memory block 2 enters through an adder

5 on modulation unit 4. Here, it is converted either to rich gradations (using a black and white CRT) or to color tones and bright gradations (using an illuminated CRT). In the first case, the block

4 modulations may contain a digital-analog converter, the bit size of which depends on the number of 9 luminance gradations displayed on a CRT screen simultaneously (within one frame). In the second case (when working on a color CRT) - three digital-analog converters, one for each of the R, G, B inputs of a CRT.

Since in the memory block 7 the addresses of the cells of the memory block 2 of the attributes are written, depending on the number of bits on each image element in block 2 there is a certain number of valid addresses, i.e. The number of bits for each image element in the memory block 7 determines the number of gradations or color features (from the entire population) that can be displayed on a CRT screen during a frame. The number of color features that can be displayed on a screen is determined by the size words recorded in block 2 of memory of signs.

For example, when the number of bits per element is three in block 7 of memory and the word depth in block 2 of feature memory, nine devices can output (for a color CRT) eight color signs from 512 possible within a frame. Sequential output of all possible color shades is carried out by changing the contents of the eight available cells in block 2 of the memory of attributes by commands from the control unit.

When editing information using a light pen, the device operates as follows.

Editing a single image element.

Editing is performed after the light pen has pointed to this element. The impulse from the feather light enters the control unit.

where, using the address block 3, the current address of the specified element in the memory block 7 is determined. The necessary information is recorded in the found cells of memory block 7.

Editing a group of elements

images united by one color. common or healthy sign.

In this case, after indicating by the light pen 8 on the image element

0 with this sign on the pulse from the light pen 8 to the register base | sits the current address of the cell of the characters' RAM, coming from the memory block 7. According to the command from control block 1, adder 5 performs the corresponding operations, skipping or not passing information to the modulation block, recorded in the cell of the sign memory block 2 with the address stored in register 6. Thus, the operator may not destroying the output information, examine the part of the image of interest. For example, let

5, the thermal distribution in a certain volume is investigated and the isotherms on the CRT screen are distinguished by their color characteristics. In this case, the operator may indicate one of the elements

The Q image relating to the isotherm of interest, and sending the corresponding command from control block 1 to adder 5, skip to the CRT screen only information about this isotherm. It can also output information about a certain temperature zone above or below the level indicated by it.

In this case, block 5 may be an adder with output

0 valves. Then, to output a certain temperature zone in block 5, the following operations are performed, the adder’s address is entered in the address RAM of the signs stored in register b, and

5, when each information element is output, the value entered in the adder is subtracted with the value of the current address coming from the memory block 7;

0 occurrences of the sign of transfer from the adder 5 information is passed through the modulation unit 4 to the screen of the CRT 9. In the absence of this sign, information is not received at the input of the modulation unit.

Claims (2)

If the operator wants to leave the isotherm of interest, removing the rest of the image, then in the comparison circuit of logic block 5, the current address of block 2 of the trait memory and the address recorded in register 6 is compared by pulse from the light pen. In the case of a comparison, the information is passed through block 5. If it is necessary to remove some isotherm, then the information is passed only if the specified addresses are not comparable. Thus, the proposed device allows displaying a CRT image with a wide range of color and brightness characteristics, improving the operator’s conditions for image analysis, reducing information editing time. Invention device A device for displaying information containing a synchronization unit connected to a deviating electronic circuit. -beam tube (CRT) to a control unit connected to a light pen optically coupled to a CRT screen and to a memory unit that is connected to an address block m connected to a control unit, which is connected to a modulation unit, connected to a CRT modulator, in order to expand the field of application of the device by allowing the information to be edited by groups of image elements combined by a common feature; These editing features, the inputs of which are connected respectively to the synchronization unit, the control unit and the memory unit, the adder, the first input of which is connected to the output of the editing features memory unit , The second input to the control unit and the register, the first input of which is connected to the light pen, the second input - to a block memory connected to the third input of the adder, the fourth input connected to the register output and the output of the adder - a modulation unit. Sources of information taken into account during the examination 1. USSR author's certificate 456286, cl. G 06 K 15/20, 1975. 2. Author's certificate of the USSR № 438032, cl. G 06 K 15/20, 1975 (prototype).