SU1249576A1 - Device for displaying half-tone pictures on screen of television receiver - Google Patents

Abstract

The invention relates to automation and computer technology and is intended for use in computer information display systems synthesized by the computer. and functional connections. At the output of the line decomposition counter, the code of the number of the spreading of the decomposition into the line displayed at the given moment is generated, and at the moment of equality to its differential address, the memory block is output, the output of the comparison unit appears. differences in luminance along the line to the next state. Accordingly, the word corresponding to the next differential is selected from the memory block. The newly selected luminance code changes the image brightness before a new address comparison. Moreover, the end of each television line is interpreted as a difference in brightness, i.e. to encode empty: strings require one memory location. 1 silt:

Description

The invention relates to automation and computer technology and is intended for use in systems selecting information synthesized by a computer.

The purpose of the invention is to demonstrate the accuracy of the device due to the formation of images in the form of horizontal segments; rows of a certain brightness.

The drawing shows a block diagram of the device

I Device with serially connected synchronization unit 1, video signal generator 2, television receiver 3 and serially connected counter 4 decomposition elements on the line, whose input is connected to the second output of synchronization unit 1, comparison unit 5, counter 6 differences of brightness. whose second input is connected to the third output of the synchronization unit 1, memory unit 7, the second output of which is connected to the input of the comparison unit 5, and the code-voltage converter 9, the output of which is connected to the second input of the form Rotate 2 video signals,

The synchronization unit 1 is a standard unit for forming blanking and synchronization of television sweeps and horizontal sampling pulses. The synchronization block contains a high-frequency generator connected to the input of a counter connected to the decoder, which generates standard horizontal lower and vertical dampening pulses at the output. Video signal generator 2 is a standard two-signal analog mixer. Code-to-voltage converter 8 is a digital-to-voltage converter that carries information about image luminance,

The device works as follows.

At the beginning of the frame - the counter 4 element expansions in the row and the counter 6 differences of brightness in the row are reset. In this case, from the memory block 7, a zero cell is selected, in which the address of the first one in the differential line and the brightness code, which will be from the beginning of the line to the first differential, is written. The luminance code is converted by the code-voltage converter 9, in analog form it arrives

on the fopa a-driver 2 video signals and slits as an image signal, which is interlaced with frame and line damping and synchronizing pulses from the synchronization unit 1, As a result, a full television signal appears at the output of the video signal generator 2, which at the entrance

television receiver 3.

The sampling pulses (lowering damping pulses) from the second output of the synchronization block 1 are sent to the counter input 4 decomposition elements

but the line at whose output the code of the number of the decomposition element in the line currently being displayed is formed. As soon as this code is equal to the address of the differential, filed with

the second output of the memory unit 7 to the second input of the comparison unit 5, the signal output appears at the output of the latter, throwing the counter 6 differences of brightness along the line into the next state

this is, respectively, from block 7

the memory will select the word corresponding to the next differential. This word contains the address of the differential, taken from the second output of the 7-unit, and the luminance code, taken from the first output. The newly selected luminance code changes the image luminance before the new address mapping. The end of each television line is interpreted as a difference in brightness, i.e., e, a single memory cell is required to encode a blank line.

Claims (1)

Invention Formula A device for displaying semi-monitored images on a television receiver screen, containing a counter of decomposition elements in a row and serially connected memory block, a converter code - voltage, a video signal generator connected to a television receiver, and a synchronization block, output of blanking and synchronization of television scanners of which is connected to the synchronous input of the video signal former, while the input of the counter of the elements of expansion in the row is connected to the output of the horizontal quenching imp lsa sync block, characterized in that, in order to increase the accuracy of the device by forming an image in the form of segments of lines gorizontalngh certain luminance, it co derlsht serially connected unit and comparing the luminance differences of the counter on line having an input connected to the output of personnel quench e12495764 the pulse of the synchronization unit, and the output - to the input of the memory unit, the second output of which is connected to the first input of the comparison unit, the second input of which is connected to the output of the counter of the expansion elements in the row. Editor N. Yatsola Compiled by S. Grishin Tehred M. Khodanich Proofreader E. Sirohman Order 4330/52 Circulation 455 Subscription  VNIIPI State Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d, 4/5 . Production and printing company, Uzhgorod, Projecto st., 4