SU1254518A1 - Device for coding images - Google Patents

Abstract

The invention relates to the field of automation and digital technology and can be used for color coding of black and white images in process control systems. The aim of the invention is to improve the accuracy of the device. The goal is achieved by the introduction of three counters, a digital-analog converter, a comparator, two multivibrators and four elements I. 1 Il. ate 4 cl

Description

ten

25

And the invention relates to automation of digital technology and can be used for color-coding black-and-white images in the control systems of technological processes - 5 and.

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

The drawing shows a functional diagram of the proposed device.

The device consists of a photoelectric transducer 1, video-. ITEL 2, clock generator 3, block

4 views, first comparator

5, the first counter 6 of the D / A converter DAC 7, the second comparator 8, the reversible counter 9, the first multivibrator 10, the first, second, third and fourth elements And 11-14, the second counter 20 15 and the second multivibrator 16.

The device works as follows.

The image of the process being monitored is projected onto the photoelectric converter 1, the signal from which is fed to video amplifier 2. The amplified signal is fed to the direct and inverse inputs of the comparators

5 and 8, as well as on display unit 4. Sync generator 3 generates sync pulses for synchronization of the entire device, as well as counting pulses, which are fed to a binary counter

6. Depending on the state of the meter 6 35, the voltage at the output of the D / A converter 7 varies. The signal from the CAC output goes to the direct and inverse inputs of comparators 5 and 8, which compare the signals from the output of the DAC 7 and video 40 amplifier 2. The counting input of the reversing counter 9 receives pulses from the synchronous generator 3. Reverse counter 9 counts pulses in the forward direction, when a single signal from the direct output of the comparator 5 arrives at its input, and vice versa, when a single signal arrives at its input: a comparative inverse output of the comparator 8.50

The signal in the form of a 3-bit binary iHoro code from the output of the reversible counter 9 is fed to the inputs of the elements 11-13. The second inputs of these elements receive signals from the corresponding bits of counter 15, the state of which is determined by the number of counting arrivals at its input

25

five

20

35 40 45 50

55

pulses from an element 14. And the input of element 14 receives two sequences of pulses from two multivibrators 16 and 10, differing by an order of magnitude or more. In fact, element 14 is a gating device in which a sequence of pulses with a lower frequency gates a high-frequency one. Due to the fact that multivibrators 16 and 10 have finite stability, the number of pulses at the output of the AND 14 element varies, and consequently, the state of the counter 15 changes, which leads to the conversion of the main code to the AND 11-13 elements. The outputs of these elements are connected to the inputs of the display unit 4. Each code arriving at these inputs of the display unit corresponds to a specific color. In this case, the color of the display screen of the display unit changes randomly.

The operator, controlling the progress of the technological process on the screen of the display unit, selects the color gamut determined from the point of view of information content and, giving a signal to the input of the device, fixes it.

Claims (1)

Invention Formula A device for encoding an image containing a photoelectric converter, the output of which is connected to the input of a video amplifier, the first comparator, a sync generator and a display unit, the first input of which is connected to the first output of a generator, the second input of a display unit and the first input of the first comparator are connected to the output of a video amplifier, the second output of the sync generator connected to the input of the photoelectric converter, which is due to the fact that, in order to improve the accuracy of the device, the first counter, IFRO analogue converter, second comparator, reversible counter, first multivibrator, first, second and third elements AND, and a second multivibrator connected in series, fourth AND element and a second counter, first, the second and third inputs of which are connected to the first inputs of the first, second and third elements And, the first, second and third outputs of the reversible counter are connected to the second inputs of the first, second and third elements And, the outputs of which are connected to the third, fourth and fifth inputs of the display unit, the outputs of the first and second comparators are connected to the first and second inputs of the reversing counter, the third input of which is connected to the first output of the clock generator, the third output which is connected to the input of the first counter, the output of which is co2545184 dinene to the input of a D / A converter, the output of which is connected to the second input of the first comparator and to the first input of the second comparator, the second input of which is connected to the output of the video amplifier, the output of the first multivibrator is connected to the second input of the fourth element And, . the outputs of the first and second multivibrators 10 are combined and are the input of the device.