SU1246087A1 - Device for displaying information on screen of television indicator - Google Patents

Abstract

The invention relates to the field of computing technology and can be used to visually display data arrays in automated control systems or dynamic moving pictures in gaming systems and multiplication systems. The purpose of the invention is to increase the speed, which is achieved by introducing a group of elements And and the shift register and functional connections. The maximum possible number of pixels is m-n, where m is the number of elements in a line, and n is the number of lines of the raster decomposition. Depending on the required information content of the device, one bit or several bits are used to describe each element of the image. In the proposed device, the size of the group shift registers is selected from the point of view of minimal hardware costs while coordinating the speed of the memory unit and the speed and resolution of the monitor. The size of the shift register can be lower than the size of the group's shift registers, equal to or higher, and is determined by the desired number of independently controlled image fragments. To split an initial raster of dimension m-n into two raster of dimension m / 2n, it is enough that the shift register has two bits. With more bits, it is possible to work in parallel with several partial rasters, for example, separate or combined display of several arrays, or displaying a fixed background image on one raster and creating a dynamic image by switching other changing images drawn on other rasters. 1 il. i (L

Description

The invention relates to the field of digital computing and can be used to visually display arrays of data in

automated control systems or dynamic moving pictures in gaming systems and animation systems.

The purpose of the invention is to increase the speed of the device.

The drawing shows a block diagram of the device.

The device contains a memory block 1, a group of shift registers 2, (information) inputs 3 entries of which are connected to informational outputs of memory block 1, shift register 4 (informational) entry 5 of which is a device control input, a group of elements 6 AND, outputs which are connected to the second inputs of the block 7 matching with the television indicator 8 (monitor), the first inputs of the elements I are connected to the output 9 (serial code) of the shift register 2, and the second inputs are connected to output 10 (serial code) and input) 11 (sequential write) of shift register 4, synchronizer 12 connected to memory unit 1, clock inputs 13 of shift registers 2. clock input 14 of shift register 4 and first input of matching unit 7

The device works as follows.

The descriptions (digital models) of the displayed arrays of information are recorded from an external source of information (not shown) in the memory unit 1 in the form of the illumination codes of the individual ps of the elements of the raster decomposition of the image. The maximum possible number. elements of the image is equal to tprGta - the number of elements in the line, n - the number of stro raster decomposition. Depending on the required information content of the device, one bit or several bits are allocated to describe each element of the image. In the first case, the device contains one main register 2 shift and one element 6 And, and the image can be only black and white with two gradations of brightness of each element (to shine or not to shine). In the second case, the device contains a group of registers 2 shift and elements 6 And, and

ten,

five

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each1) 1st image element, 7ircules (5th the corresponding monitor, television indicator 8, will be either black and white with several gradations of brightness, or color.

Shift register 2 serves to convert a parallel code readable from memory block 1 into a pad-to-serial code output to the monitor. Each register has K bits, Thus, in one reading cycle from block 1 The information on K, consecutively located on one line of the image elements, is extracted. The write to the shift registers 2 is carried out through the information parallel inputs 3 records when 2 corresponding signals are received at the clock inputs 13 from the synchronization. Full information about one line of the image will be read in m / k readings in the memory block,

Immediately after writing in the shift code registers 2, the first of the codes appears at the outputs 9 of the sequential code of the registers. As a result of the shifts at the outputs of the serial code, the illumination codes of the remaining elements appear sequentially in time. The shifts are made under the influence of signals arriving at the clock inputs 13 from the synchronizer 12.

The illumination codes, successively appearing at the outputs of the registers, through the two-input elements 6 and the matching unit 7, control the display of individual image elements by the monitor 8. At the same time, the synchronizer 2 provides for the selection of the monitor corresponding to GEs; their raster elements, for example, by sweeping the beam of the cathode ray tube if the latter is used as an indicator.

The passage of the illumination codes through the elements b and is controlled by signals from the output 10 of the sequential code of the 4 shift register. Register; Shear B The simplest case has the same way as registers 2 has shifts. : discharge Due to the connection of its information input of the sequential record with the output of the 10 serial code, a ring shift register is formed, the state of which after every K shift

thirty

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cyclically repeated. The shift of the contents of the shift register 4 is carried out by the signals supplied by the synchronizer 12 to the clock input 14, synchronously with the parallel recording signal to the shift registers 2 and -1 by the shift signals of their contents (total K shifts per output cycle of K pixels). During the time of the output to the monitor of a single image line, m / k of full cyclic shifts of the contents of shift register 4 is made (for this, the number m is selected as a multiple of K). The initial state of shift register 4 is determined by the code written to it by the information parallel input 5 of the record. , in the intervals, free from the output of information on the monitor, for example, during the return stroke of a CRT beam.

If zeros are written during the shift register 4 shift, the shifts of its contents will not lead to a change of the zero state at the output 10 of the sequential code, and the passage of the highlight codes through the elements 6 will always be forbidden. If one or several bits of the shift register 4 contain units, as a result of the shifts, their appearance on the sequential code input 10 will allow the illumination codes of the corresponding picture elements to be displayed on the monitor. Such permission will take place cyclically for each group of K elements. Consequently, the code, circulating in shift register 4, is a mask for each group of picture elements sequentially arranged on one line. Only those elements corresponding to which the discharge will be transmitted to the display: the masks are set to one. All images displayed on the monitor screen with raster decomposition of m – n can be considered as consisting of K fragments, each of which can be highlighted independently or in an arbitrary combination with others. Each observed fragment may in this case represent a separate array of information or a picture. During the observation of the resolved fragment, recording (preparation for observation) of other fragments is performed, and the process

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the entries are invisible and affect the observation. The new recorded arrays will become visible with a corresponding change in the code shift circulating in register 4, 5. At the same time the previous image can be masked (extinguished).

In the proposed device, a different ratio is possible between the range of the 10 shift registers and the shift register 4. The number of bits 2 of the shift is selected from the point of view of minimal hardware costs when coordinating the performance of unit 1

15 memory and speed and resolution of the monitor 8. The shift register 4 of the shift may be lower than the size of the registers 2 shift

 groups, equal to or higher, e.

20

determined by the desired number of

simulated fragments of the image. To split an initial raster of dimension m-n into two raster of dimension t / 2 n, it is sufficient that the shift register 4 has two bits. With a larger number of bits, it is possible to work in parallel with several partial rasters, for example, separate or combined display of several arrays, or to display a fixed background image on one raster and create a dynamic image by switching other variable images.

pictures drawn on other rasters.

Claims (1)

Invention Formula A device for displaying information on a television indicator screen, comprising a memory unit, a group of shift registers, recording inputs of which are connected to information outputs of a memory unit, a matching unit whose output is connected to a television indicator, a synchronization unit whose first, second and third outputs are connected respectively, with the first inputs of the memory unit and the matching unit and the clock inputs of the group shift registers, the second input of the memory unit is with the information input of the device, characterized in that in order to increase the speed of the device, a shift register is entered into it, the control input of the device, and the group of elements And whose outputs are connected to the second inputs of the matching unit, the first inputs of the elements of the group And are connected to the outputs of the corresponding registers 12460876 the shift group, the second inputs of the elements And the group is connected to the output of the shift register connected to its serial write input, clock; The left input of the shift register is connected to the fourth synchronization output block,