SU1153343A1 - Graphic information output device - Google Patents

Abstract

yCTP (rfiCTBO FOR GRIDNING INFORMATION, containing a memory unit, a synchronization unit, a modular unit, a pulse distributor, a switch, a coordinate conversion unit, a remote controller, a television indicator, the first input of which is connected to the first output of the synchronization unit, second, third, fourth The terminals of which are connected respectively to the first and second inputs of the switch and the third and three inputs of the pulse distributor, the first output of which is connected to the fifth input of the switch, the third and fourth inputs of which Connected respectively with the second and third outputs of the coordinate conversion unit, the fourth output of which is connected to the first input of the pulse distributor, the second output of which is connected to the second input of the decoder, the first input of which is connected to the first output of the coordinate conversion unit, the first and second inputs of which are the first and the second inputs of the device, the second input of the television indicator is connected to the output of the modulation unit, the inputs of which are connected to the outputs of the memory unit, the first and second inputs which are connected respectively to the third and fourth outputs of the pulse distributor, the fifth and the next outputs of which are connected respectively to the first and BTopt 4 inputs of the modulation unit, the output of the switch is connected to the third input of the PA unit: mtn, the fourth and fifth inputs of the pulse distributor are the third and fourth inputs of the device, respectively, characterized in that, in order to increase the speed of the device by reducing the time to erase the image on the screen, the first and second thangers on the e elements of the NL, the outputs of which i are connected to the inputs of the pastille block group, the outputs of the decoder are connected; : P with VTO1SHMI inputs of OR elements, & k "the first inputs of which are connected to the output of the first trigger and the first input of the second trigger, the output of which is connected to the first input of the first trigger, the second input of which is connected to the sixth output of the block the syncronization, the second input of the second trigger is connected to the fifth input of the device, the output of the Sure flip-flop is the output of the device.

Description

- iП

The invention relates to computing and can be used to output graphical information from a computer.

The purpose of the invention is to increase speed by reducing the erase time of the image on the screen.

Figure 1 presents the block diagram of the device; figure 2 - timing charts of the device.

Device 1) contains a memory block, a decoder 2, a modulation block 3, a 4-pulse distributor, a synchronization block 5, a switch 6, a television and a switch 7, a block 8, coordinate transformations, a group of 9 OR elements, the first trigger 10 and the second trigger P.

The device works as follows.

In the mode of recording the coordinates of points when forming the image and reading the raster equivalent of the image from memory block 1 to the screen of the television indicator 7, the proposed device operates in accordance with the known (2 J, with the only difference that the information recording signals go to the memory block with the output decoder through a group of elements SHS.

In the mode of erasing the screen to the input of the installation in the second trigger 1

33432

the erase signal is received, (FIG. 2 is a diagram of a I and sets the second flip-flop H to current 1 (FIG. 2 is a diagram B).) From the output of the second flip-flop 11, this signal goes to the information input of the first flip-flop 10, which can be used as D-trigger. At the clock input of the first trigger 10 are received

0 from block 5 synchronization frame pulses. After the installation of the second trigger 11 in the first trigger, the first frame pulse will set to 1 the output of the first trigger 10, which will reset to

5 About the output of the second trigger 10 and will be in for exactly one frame before the arrival of the second frame, pulse. Thus, to all the inputs of the memory block I in the

0 for exactly one frame through

a group of elements of the CMM will receive a logical level of 1, allowing the recording of information. Received to address block {memory through

5, the switch 6 from the synchronization unit 5 will for one interval enumerate all the cells of the regeneration field. The cleaning code is fed to the input of the memory block 1 through the 4-pulse distributor.

0 This results in a clear-in: its screen for one frame interval, i.e. for 20 ms. The falling edge of the signal from the output of the first trigger 10 may serve as a signal to end the erasing of the screen.

-about

Claims (1)

DEVICE FOR DISPLAYING GRAPHIC INFORMATION, comprising a memory unit, a synchronization unit, a modulation unit, a pulse distributor, a switch, a coordinate conversion unit, a decoder, a television indicator, the first one of which is connected to the first output of the synchronization unit, the second, third, fourth and fifth outputs of which connected respectively to the first and second inputs of the switch and the second and third * inputs of the pulse distributor, the first output of which is connected to the fifth input of the switch, the third and fourth inputs of which connected respectively to the second and third outputs of the coordinate conversion unit, the fourth output of which is connected to the first input of the pulse distributor, the second output of which is connected to the second input of the decoder, the first input of which is connected to the first output of the coordinate conversion unit, the first and second inputs of which are the first and second the inputs of the device, the second input of the television indicator is connected to the output of the modulation unit, the group inputs of which are connected to the outputs of the memory unit, the first and second inputs of which connected respectively to the third and fourth outputs of the pulse distributor, the fifth and sixth outputs of which are connected respectively to the first and second inputs of the modulation unit, the output of the switch is connected to the third input of the memory block, the fourth and fifth inputs of the pulse distributor are respectively the third and fourth inputs of the device, characterized the fact that, in order to improve the speed of the device by reducing the time of erasing the image on the screen, the first and second triggers are introduced into it: OR elements and, the outputs of which are connected to the inputs of the group of the memory block, the outputs of the decoder are connected to the second inputs of the OR elements, the first inputs of which are connected to the output of the first trigger and the first input of the second trigger, the output of which is connected to the first input of the first trigger, the second input of which is connected to the sixth output of the block synchro ^; lowering, the second input of the second trigger is the fifth input of the device, the output of the first trigger is the output of the device. > 3 t 1153343 2