SU1425769A1 - Information display apparatus - Google Patents

Abstract

The invention relates to optical information processing means and can be used in measurement technology for determining the spatial distribution of energy in optical images recorded on thin magnetic films with band domains. The purpose of the invention is to improve the accuracy of the device, which is achieved by introducing the shaper of the central isozone and corresponding functional connections. The invention makes it possible to significantly improve the accuracy of imaging of a halftone optical image during its synthesis by sequential infusion of isosones. At the same time, the overlap of signals from one of the isozones to the signals of the other is practically absent, since the overlap region of the neighboring iso-contours is determined by the limit for the television decomposition method by the temporal spread of the leading edge of the video signals. 1 hp f-ly. 2 Il. (L

Description

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The invention relates to optical information processing means and can be used in frenbHou measuring techniques for determining the spatial distribution of the energy IB of optical images recorded on thin magnetic films with | band domains.

I The purpose of the invention is to improve the accuracy of the device.

i FIG. 1 is a functional diagram of the device $ in FIG. 2 is a functional block diagram of the formation of the | | - izone central contour; I The device comprises a block 1 converting a latent optical image into a visible one, a block 2 optical image processing, a block 3 converting an optical image into a video signal, a shaper 4 central isozone contour 5 modulating video signal, rotation node 6, rotation angle sensor 7, unit | 8 converting the angle of rotation signal of the shaft into an intensity signal, | memory block 9, brightness correction unit 10, cathode-ray tube (CRT) P.

j Shaper 4 isosone contours contains trigger 12, first element | and 13, counter 14 (lower-case sync I pulses), generator 15 pulses of I filling, block 16 dividing into two, second element I 17, block 18 of RAM, comparing element 19 . I The principle of the device is to synthesize a half-I image by successively isolating isoenergic zones, forming iso-contours from them and simulating them simultaneously, the brightness of each formed contour is determined by the angle sensor signal and corresponds to a certain energy density.

When restoring a recorded image, a magnetic film with a magnetic colloid deposited on its surface is placed in the magnetic field of the transform of the latent image into visible and o. illuminated by a beam of light. The processing unit 2 selects the diffracted light in a direction and forms an isozone on the targets of the optical image-to-video conversion unit 3. From the output of block 3 signal line by line

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supplied to the shaper inlet of a 4 centrifugal isozone contour. This block converts the video signals of the inserted isozone to iso-contour signals, which correspond in duration to one raster element, and in their position to the center of the isozone. Moreover, the video signals of the next isocontour are transmitted to the brightness modulator of block 5 and further to block 9 of memory only if their position in the frame differs from the position of the video signal of the previous isocontour. A signal proportional to the energy density of this circuit is sent to the other input of block 5 from block 8. A signal from a rotation angle sensor 7 is supplied to the input of block 8.

The generated luminance signals of the isocontours (their amplitude corresponds to the energy density of the selected isozone, the position to the position of the center of the isozone, and the duration to the duration of one decomposition element of the television signal) from the output of unit 5 are fed to memory unit 9. In him . video information is stored on each continuously formed isocontour and a latent image is synthesized corresponding to the distribution of the radiation energy density recorded on a magnetic film. The CRT is used to visualize the synthesized image. P, on which the video signal is outputted from block 9 through luminance correction unit 10 to CRT modulator 11. The operation of the device is synchronized with frame and line sync pulses of block 3.

In the odd-numbered frames of the television signal of the released isozone, at the command of trigger 12, a sign of finding the center polo is formed; 1 isozone (i.e., isocontour position): signals from a block 3 converting a latent image into a visible and generator 15 of filling pulses are supplied to the input of element I 13, used in temporary gate mode. The duration of pulses of generator 15 operating in meander mode is determined by The duration of the signal from one element of the decomposition of block 3. The sequence of pulses from the output of the element And 13 through the block 16 division into two and the element And 17 is fed to the input of the block 18 RAM, which is controlled by the address input

performed by the counter 14 horizontal sync pulses. Element And 17 permits the arrival of a pulse of the feature of the center of the isozone to the RAM block 18 only in odd frames of the television signal (the Record command). In the even-numbered adra of the television signal, by a command from trigger 12, Matching on the 19th comparison element, the current video signal of the even channel is compared with the signal of the isocontour location successively along each line of the frame. The duration 15 of these pulses is determined by the duration of the signal from one decomposition element. The isocontour position signal generated in this way is fed from the output of the imaging unit 4–20 to the control input of the video modulation unit 5.

Overlap of signals of one isozone

the other signals are practically absent, since the overlap area of 25 adjacent iso-contours is determined by the limit for the television decomposition method by the time spread of the forward freet of video signals.30

The application of the proposed device allows to significantly increase

the accuracy of the display of a halftone optical image during its synthesis by sequential extraction of isosones .jc.

Claims (2)

1. A device for displaying information, comprising a latent optical-to-visible image conversion unit 40 located on one optical axis, an optical image processing unit and an optical image conversion unit into a video signal, a rotation angle sensor, the first output of which is connected with the input of the rotation node, the second output is from the input, the output of which is connected to the information input of the memory unit, the output of which is connected to the input of the brightness correction unit, the output of which is connected to m A cathode-ray tube puller, characterized in that, in order to improve the accuracy of the device, it contains a central isosone shaper, whose information input is connected to the first output of an optical image-to-video conversion unit whose second output is connected to a horizontal sync input of the isozone central loop and controls memory input, and the third output to the frame synchronous input of the imager's central circuit and the address input of the memory unit; Atel central izozony circuit connected to the control input of the video signal modulation tion. 2. The device according to claim 1, wherein the driver of the central isosone circuit comprises a pulse generator, the output of which is connected to the first input of the first element I, the second input of which is the information input of the slotter, the output of the first element, The I input is connected to the input of the division block into two and the first input of the comparison element, the output of which is the output of the shaper, the code of the dividing unit into two is connected to the first input of the second AND element, the output of which is connected to the information input of the operating unit TI, the recording control input of which is connected to the first output of the trigger connected to the second input of the second element I, the read control input to the second output of the trigger connected to the second input of the comparison element, and the red input to the taps of the FETCH whose input is a line sync - house shaping, staff synchrovho the house of the angle-dddom signal conversion unit of which is the trigger input, rotation of the intensity signal, the output of the RAM block, the connection of which is connected to the information input to the third input of the element to the compared input of the video modulation unit. KadpoSuv ctfHxpouft.