SU911601A1 - Device for displaying information on crt screen - Google Patents

Description

I

The invention relates to automation, computer science, and can be used to create screen consoles equipped with color cathode ray tubes (CRT).

Devices are known that allow displaying color CRT graphic information. The device comprises a data processing unit, a color control unit and a color television device. In the processing unit, the information is formed as a two-dimensional matrix. A buffer device is located in the chromaticity block, in which information from the processing unit, a linear buffer device, by means of which one line of information is read from the buffer device, is stored. In the same block there is a synchronization node that controls both the color and data processing unit and the color television device Cl

The drawback of the device is the large capacity of the storage device necessary for encoding information displayed on the screen.

A device is known that consists of a data processing unit of a color control unit of a color television device. The chrominance control unit contains two linear buffer circuits in which information is accumulated

10 containing c in a row, a timing arrangement, a timing circuit, a switching circuit 2,

The disadvantage of the device is the large storage capacity of the device.

Claims (3)

Closest to the proposed technical entity is a device containing a control unit connected to a computer, a main storage device, an auxiliary storage device, an address register, an address counter, a device for controlling an image on a CRT screen, a device for selecting color change addresses 3. The drawback of the device is the large storage capacity needed to encode the output information. The purpose of the invention is to simplify the mouth of the concept. This goal is achieved by the fact that, in a device containing successively connected control unit and television signal generator, connected to a cathode ray tube, memory blocks, the first inputs of which are connected to the control unit directly, and the second inputs through the first and second counters adress. respectively, the outputs of the memory blocks are connected to the television-signal shaper, two I elements and the third and fourth address counters are introduced, the first inputs of which are connected to the control unit, the second inputs; Dy - C Exit corresponding memory block outputs them - through the respective elements and the first and second address counters, respectively. The drawing shows a block diagram of the device. The device contains a control unit 1, which is connected to the first block 2 of the luminance signal memory, second by the memory unit 3 (color signals), shaper i of the television signal, the output of which is connected to the CRT 5. The control unit is also connected to the first counter 6 of the address (Brightness), the second counter 7 addresses (colors), the element And 8 and 9, the third counter 10 address (brightness) and the fourth counter 11 addresses (colors). The outputs of the memory block 2 are connected to the TV signal generator and to the input of the counter 10 (brightness), the output of which is connected to the input of the second memory block 3 through the AND element and the address counter 6. The outputs of memory block 3 are connected to the television signal shaper 4 and to the input of counter 11, the output of which is connected through input element 9 and address counter 7 to the input of memory block 3. The information received from the computer is generated by the control unit 1 and is recorded in the blocks 2 and 3 of the memory. For actually displayed fragments (for example, mimic diagrams) it is characteristic that the brightness and color of the image elements do not change from element to element, but remain constant for some group of displayed elements. With this in mind, a characteristic has been entered into the words of the device exchange with a computer, indicating the number of repetitions in color and brightness. Consider the operation of the onset of device brightness, taking into account that the color channel operation is similar. Information output starts at the address recorded by signals from control unit 1 to address counter 6. The information stored in the corresponding memory cell of block 2 is fed to a television signal generator k, where it is converted into an analog signal and, mixed with control clock pulses, is fed to CRT 5. At the same time, information about the number of repetitions is recorded in counter 10 ( repeats channel luminance). After completion of the testing received by the television signal generator, the state of the counter 10 decreases by one by the signal of the control unit 1, and the state f of the address counter 6 does not change and the television signal generator re-receives information from the same memory cell block 2. Further operation of the device is similar to that described above until counter 10 is set to the zero state, permitting the change of counter 6 state of the address through the element 8 to pass through, of the control unit 1 and of the memory unit 2, information is taken from the next memory cell, which goes both to the television signal generator and to the inputs of the counter 10. Formula of the invention A device for displaying information on the screen of a cathode ray tube containing a control unit and a television signal driver connected to a cathode ray tube, blocks, the first inputs of which are connected to the control unit 59 directly, and the second inputs through the first The second and second address counters, respectively, are the outputs of the memory unit connected to a television signal shaper, characterized in that, for the sake of simplicity, it contains two AND elements and the third and fourth address counters, the first ones: the inputs of which are connected to the control unit, the second inputs - with the outputs of the corresponding memory blocks, their outputs - through the corresponding elements AND with the first and second address counters, respectively. Sources - information taken into account during the examination 1. Japan, Japan. If 51 31132, class 97/7%, published. 1976. 2. For Japan, W 51-31133 cl. 97/7 In «tl, pub. 1976. 3. The patent of France, If 219867, cl. 6 09 F, publ. 197 (prototype) ffff