SU1587663A1 - Method of shaping video signal from matrix converter light-signal - Google Patents

Abstract

The invention relates to television and can be used in broadcast and applied television (TV) systems based on matrix luminous transducers (MSS). The purpose of the invention is to increase the resolution of the MMSS. An image of an object is spatially sampled by passing through an opaque mask having holes

the size of each hole is several times smaller than the size of the photosensitive element of the MMSS. In each TV field, an opaque mask is shifted along the line and frame by an amount corresponding to the size of the opening of the opaque mask. When a full TV signal is formed from the signal from the MMSS, the horizontal and frame synchronizing and damping pulses are shifted according to the displacement of the opaque mask. 3 il.

Description

The invention relates to television and can be used in the television f f bHbix and applied television (TV) systems based on light-to-signal matrix transducers.

The purpose of the invention is to increase the resolution of the MMSS.

FIG. 1 shows the layout of the samples on the MMSS during scanning and the layout of the elements during playback in two adjacent TV frames; in fig. 2 is a diagram explaining the process of spatial-plane shift of elements of adjacent frames; Fig. 3 shows a structural electrical circuit of a device that implements a method of forming a video signal from a matrix light-signal converter.

A device that implements the method of forming a video signal with MMSS (Fig. 3) contains a microscanner 1, a television camera 2 on an IPMS, a delay unit 3, a microscanner control unit k, a synchronous generator 5, a full television signal generation unit 6, a signal transmission unit 7 and a television receiver eight.

The method of forming a video signal from a matrix light-to-digital converter is a signal as follows.

The image of the object on the MMSS is projected through a mask. Then shift

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from the horizontal and vertical mask (or image) with a frequency that is multiple or equal to the frame frequency of the signal formation. At the same time, to study these shifts, delay (shift) the synchronizing signals (or the image signal). Because of this, at the receiving end: the coordinates of the shifted samples are automatically restored. In FIG. Figures 1a, b, c, d show the spatial positions of the shifted samples of like elements of successive frames during conversion (reading) (Fig. 1 a, b) and playback (Fig. 1. By g).

A device that implements a method of forming a video signal from a matrix light converter - the signal works as follows.

The image of the object through the microscanner 1 is projected onto the television camera 2 assembled on the MMSS. The micro scanner 1 shifts the elements of the projected image horizontally and vertically relative to the sensor and is controlled by the micro scanner control unit k. The control input of the block t is supplied with control signals from the synchro-generator. On the television camera 2, frame image signals are sequentially generated. Fig; Figures 1 and 2 show the processes of forming and restoring the image elements of adjacent frames at the transmitting and receiving ends. The shift of the image elements is carried out simultaneously over the entire frame at a distance within which the contrast sensitivity of the visual system remains constant to the shift. FIG. Figure 1 shows the location of like elements along the plane of adjacent frames. For comparison, the damping pulses of similar rows of consecutive frames are also shown. 1a, a corresponds to the light-to-signal conversion process, and FIG. 16, d - image restoration process. Next, the image signals come to the delay unit, where the image signals are delayed in accordance with the spatial shift of the elements of adjacent frames. To properly restore the image elements at the receiving end

87663

It is necessary to ensure a spatially plane shift of elements of adjacent (consecutive) frames. For this purpose, either the image signals are shifted either by a delay or the damping (synchronizing) signals are shifted. In this case, the device has a block 3 signal delay

d images. The delay of the image signal is carried out in accordance with the spatial-planar shift of the elements of adjacent frames by applying control signals with

15 outputs of the micro scanner control unit to the input of the 3 delay unit. Since, in the MSSS, a rigid raster structure and a shift of the elements occur with respect to the damping 2Q pulses, it is also possible to automatically restore the coordinates of the shifted elements at the receiving end by the relative delay of the damping pulses. FIG. 1 dotted line

25 shows the delay (shear) option

damping (synchronizing) pulses. Both options are equivalent and only differ in technical solutions.

3Q FIG. 2 shows the sequence of presentation of individual frames in time, the same shows the relative shift of elements in successive frames, where the x and y axes

correspond to the coordinates of the image elements in the plane, and Z (t) indicates the direction of presentation. The resulting image signals are then fed to a full TV signal generation unit 6, where processing, correction, amplification and offset of image signals with synchronization signals occur. Further, the full television signal is transmitted by block 7 over the communication channel. As a communication channel, any existing communication channel may be used. The full TV signal is fed to the TV receiver 8.

Since the individual samples in successive frames are shifted to a distance within which the contrast sensitivity of the visual system does not change, the observer does not notice this shift. At the same time, presented. Sequentially images relative to shifted frames (with different shifted readings on the plane) are visually

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Increase the resolution of the reconstructed image. The process of forming the image signals of the shifted frames and their reconstruction is shown in FIG. 2 a and b.

Thus, the proposed method allows to increase the resolution of the TV system by increasing the information content of the image signal with a constant amount of information transmitted in the frame. In addition, the proposed method can be implemented with relatively simple techniques and means.

Claims (1)

Invention Formula A method of forming a video signal from a matrix light-signal converter (MSS) with dimensions M horizontally and N vertically of each photosensitive element (FE), consisting in spatial discretization of an image of an object by passing it through an opaque mask, the dimensions of each aperture of which are horizontally m M / r and vertically p N / q, where p and q ten 87663 the multiplicity of reduction of the mask hole size relative to the dimensions of the FE MSPS, the hole spacing corresponds to that of the FE MSPS, projecting the spatial-discrete image of the object onto the photosensitive surface of the MMSS with subsequent conversion of the spatial-discretized image of the object into an electrical signal and the formation of a complete television TV signal, characterized in that, in order to increase the resolving power of 5, MSPS, with spatial discretization of the image of an object is opaque In the adjacent mask, the mask is shifted horizontally p times with a step m, and vertically q times with a step n, while forming a full TV signal, horizontally synchronous and extinguishing masks are delayed in each TV field when the mask is shifted horizontally. impulses for the duration of 1 / p of the duration of the readout of the charge with the PF MSPS, and when the mask is shifted vertically, frame synchronizing and fading pulses are delayed for the duration of the formation of the TV line. 20 25 n CMettupoffaffi / e / tojtOiMffffuf omcvema ff / tpeffv tyfff ffoffpe / todpn i-cajLjLrjU u: j r Crpovff. iQMofue imguleas r  omcvfmaf ffo o e / t / e omcvemaff npedbfdy e / foffp9 ffodflfm /) nped di t e / tadpe a tt tt H H D a a D a D DD P n Y dbatJddd R Socftpfftfyffede t / e / fo / fo enife omff / f / jra ff ftftedbfd ife madra jfadpn °° nn n Y dbatJddd eight