SU1415469A1 - Device for displaying objects - Google Patents

Abstract

The invention relates to television. The purpose of the invention is to improve the display accuracy of the selected image fragment. The device contains video control units 1 and 2, transmitting television camera 3, mixer 4, electronic key 5, cursor control unit (CU) 6, pulse frequency divider 7, coincidence unit 8, triggers 9, 10, 19 and 21, comparison blocks And, and 12, counters 13, 14, 15, and 16, electronic switches 17 and 18, g-ry 20 and 22 rectangular pulses and a push-button switch 23. The goal is achieved by forming pulses that determine the horizontal and vertical dimensions of the fragment, and provide a visual control fragment size adjustment. Dana il. perform BU 6. 3 Il. with i

Description

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H-iofipereHne thiosite to 1c teleindium n can be used to display fragments of observational objects with their automatic placement on the center of the raster.

The purpose of the invention is the new display accuracy of the selected fragment of the image.

FIG. i nreds-tavlena electric structural device diagram for displaying objects; in fig. 2 - scam bpsa cursor control; in fig. 3 - time diagrams that show their work.

A device for displaying an object (Fig. I) contains the first I and second p. th 2 "dummy blocks (WKB),:; 1.-edit television camera 3, 1 cable 4. electronic key 5, block: i control the cursor, divider 7 pulse frequency, block 8 matches; | first 9 and second 10 triggers, the first i1 and the second 12 blocks of comparison, the first 13, the third 14, the second 15 and even; the second 16 counters, the first 17 and the second 18 electronic switches, tr; / yr trigger 19, the first generator 20 ipHMoyrcuibifbix impulse: ov, chetier-: -, ltriger 2, that the generator is 22. tr of impulses, a jumpover switch key 23.

 6 cursor control {fig. 2) contains potentiometers 24 and 25, the onopi oro voltage source 2b, gene-. Tt. y. 27 m 28 sawtooth on pre-ik; n, blocks 29 and 30 comparison, block 31 matches,

The device as follows.

Clock pulses, c; ima iae c); s.:; yes ps-fed TV} E) 1ON1; th camera 3, in the case of (fig. Зб) i-iiiT 431 с ;; edovs, r, g, so j oTOp) i g ,, 1rab; There are 12 pulses in the interval between the two lines. The sync pulses (Fig. 3a). IlycTJ- output. Signal O-ok: 6 (. Sv) coincides.,: Tg of the tacton;: -:.-IMnyjlbcoM. This ignal comes in as the reset input of the input (1st count; 13, which starts to count clock pulses. It also takes} ia input of the third, grit: pp i9 and y-ipf in it, yp iWfHb, what's the first electro

Img Chn RS to: Mchatche. : H Y / set by jj. ; ;; , ;; ie, with t O / Oro clock im-. TvnaioT on the sum of shui (chechchik, 13, coyrog capacity

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is chosen equal to, in this case, N p / 2 6. When the sixth clock pulse arrives at the first counter 13, a pulse appears full of} 1i, which will transfer the third trigger 19 to another position.

At the same time, nepBbrii elec | The ground switch 17 switches to the start input of the first counter 13. In addition, the pulse 1 of the first counter 13 (Fig. Ze) enters the input of the first generator 20 rectangular pulses, which generates horizontal synchronization pulse (FIG. ZH) for the second video control unit 2. Thus, this horizontal synchronization pulse is formed in a time equal to half the line length. After the sixth pulse to the first counter 13, the clock pulses post already through the subtracting input; therefore, the codes generated, starting from the seventh pulse, correspond to decreasing the number in terms of a number of numbers. Since the summing and subtracting inputs of the third counter 14 are connected via}) independent buttons to the frequency divider 7, by pressing one of the buttons you can set a number code in the third counter 14.

Suppose that in the third counter 14 the number two is set (fig. 3g). Then the first block 1 1 of the comparison will form two impulses at the moment from the PG1Den codes on its output. These pulses arrive at the input of the first waveguide 9, as a result. After that, at its output, pulses will be formed (Fig. 3h), defining the horizontal fragment size. Since the codes of the number two appear symmetrically with respect to the code zero in the first counter 13, i.e. with respect to the moment of occurrence of screens (fig.Sv), then the impulse, 1 frame will be spread symmetrically with respect to it. Ll change 1P I size enough to change the kg of the number in the third counter 14 by manipulating with the corresponding buttons in the push-button switch 23. To install the first 9 and the third about 19 trigger 1: p

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1 from the position (fig. Zl) on their second entry point: post and 1t and. -iplice from block 6. When this pas BTOj-.iiii electronic switch 18 is received) e siphro -...pulses.BVM with: and mt status (not one quarter: :( -; - l; yr. -1 I n impulse.% H; t pas c :. N: r :,; ivH i; MJ -, or

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to the subtracting inputs of the second counter 15. The second counter 15 is reset from the pulse determining the vertical coordinate. The vertical size code is set in the fourth counter 1b by the other two buttons from the push-button switch 23. The codes of the second 15 and fourth 16 counters are measured in the second comparison unit 12, the output pulses of which control the second trigger 10. The initial setting of the second 10 and fourth 21 triggers performed by the signal of block 6. Frame synchronization pulses are formed in the second generator 22 of rectangular pulses from the overflow pulses of the second counter 15.

Claims (1)

The inclusion of the pulse frequency divider 7 is caused by the need to reduce the rate of accumulation of codes in the third 1A and fourth 16 counters to a value at which the observer can visually monitor the adjustment of the fragment sizes. The reference pulses for the divider 7 are personnel sync pulses; coming from the output of the Transmitting television camera 3. Formula isooret A device for displaying objects containing a connected television camera, a mixer and the first video1: control unit, frame sync input and horizontal low frequency us input of which are connected respectively to frame output 1 horizontal pulses and the output line horizontal pulses of the transmitting television camera serially connected electronic key, the signal input of which is connected to the signal output of the transmitting television camera, and secondly the video control: th unit, successor The first counter and the first square pulse generator, the output of which is connected to the first control input of the second video monitor unit, are connected in series, the second counter and the second square pulse generator, the output of which is connected to the second control input of a second (1st video monitor block, control block cursor, input stpochtch; clock pulses and personnel entry SYNHROMIMG1ULSOG5 KOTO9 connected to the high-frequency sync pulses and the output sync pulses of the transmitting television camera, and the first output is connected to another input of the mixer, the first and second triggers, and the coincidence unit, the output of which is connected to the control: In order to increase the accuracy of displaying the selected image, the first comparison unit is introduced, the first input of which is connected to another output of the first counter, and the output connected to the first input of the first trigger, the output of which is connected to the first input of the coincidence unit, the second a comparison unit, the first input of which is connected to another output of the second counter, and the output connected to the first input of the second trigger, the output of which is connected to the second input of the coincidence unit, the third trigger, the first input of which is combined with the input of the first generator of rectangular pulses, and the second input is combined with the reset input of the first counter, the second input of the first trigger and is connected to the second output of the cursor control unit, the fourth trigger, the right input which is combined with the input of the second generator of direct impulses, and the second input is combined with the reset input of the second counter, the second one in the second trigger and connected with the third B1, the stroke of the cursor control block, the first electronic switch, the signal input of which is connected to the output of the transmitting television camera, the control input is connected to the output of the third trigger, and the first and second outputs are connected with respect to the subtraction the main and secondary inputs of the first counter, the second electronic switch, the signal input of which is connected to the output sync pulses of the transmitting television camera, the control input connected to the output of the fourth trigger, and the first and second outputs are connected respectively to the subtracting and summing inputs of the second counter as well as the third and fourth counters, the outputs of which are connected to the second inputs of the first and second comparison blocks, respectively, are connected in series to a pulse frequency divider, od 51413460 which is connected to the output of personnel and summed by the inputs of the third count- sync pulses of the transmitting television, and the third and fourth outputs of the on-camera, and the push-button switches are connected respectively to the subtractor, the first and second outputs of which are connected with the readout and fourth inputs of the fourth counter. Fig.z