FR2575892A1

FR2575892A1 - Improvement to devices making it possible to watch a high-quality, stereoscopic television picture

Info

Publication number: FR2575892A1
Application number: FR8500537A
Authority: FR
Original assignee: Individual
Current assignee: Individual
Priority date: 1985-01-08
Filing date: 1985-01-08
Publication date: 1986-07-11
Anticipated expiration: 2005-01-08
Also published as: FR2575892B1

Abstract

The invention includes a box 1, equipped with a chassis 2 and a picture tube 3 in the horizontal position, which are fixed to a tray 4 which is able to slide from front to back. Above, a second tray 5, able to slide in the opposite direction, makes it possible to station a second off-the-shelf television set equipped with a colour picture tube 6. The façades of the two tubes are arranged so as to form an angle of 90 DEG . A glass plate 7 is fixed to a pin 8 and is integral with the upper sliding part, a circularly polarising filter on its upper part 10, and it is semi-reflecting in its lower part 11. This device is particularly intended for viewing, with the aid of a screen or filtering glasses, video or television pictures transmitted with stereographics and stereo sound 15.

Description

Le dispositif, selon l'invention, se compose d'un coffret, d'un châssis, d'un tube image, d'une plaque de verre (semi-réfléchissante dans sa partie inférieure, sa face supérieure étant enduite d'un produit polarisant), et d'un plateau (5) permettant de positionner un téléviseur couleur standart (6). La présente invention prévoit 1' utilisation d'un téléviseur couleur -type grand public, n'ayant à subir aucune modification - disposé sur le plateau (5) ; le tube de ce téléviseur doit avoir même dimension, en diagonale, que celui disposé dans le coffret.Cet ensemble, -formé du coffret (1), du châssis (2) et du tube image (3)- constitue l'invention qui fournit ainsi, le dispositif permettant de recevoir des images émises en stéréoscopie, soit par câble, caméra HF, vidéo ou magnétoscope, soit en émission directe ; ce système étant compatible avec tous ces procédés de transmission, y compris un son stéréo. The device according to the invention consists of a box, a frame, an image tube, a glass plate (semi-reflecting in its lower part, its upper face being coated with a product polarizing), and a tray (5) for positioning a standard color television (6). The present invention provides for the use of a color television - consumer type, without having to undergo any modification - arranged on the plate (5); the tube of this television set must have the same dimension, diagonally, as that arranged in the box. This assembly, formed from the box (1), the frame (2) and the picture tube (3), constitutes the invention which provides thus, the device making it possible to receive images transmitted in stereoscopy, either by cable, HF camera, video or video recorder, or in direct emission; this system being compatible with all these transmission methods, including stereo sound.

Le dispositif fonctionne de la façon suivante : (fig. )
Le châssis -(2) est conçu pour obtenir l'inversion des images de (3) polarisées par un filtre (12). L'image de (3) se reflète dans une plaque de verre (7) semi-réfléchissante, placée à 450 des tubes images horizontal et vertical mis en fonctionnement. Une mire de même émétteur est envoyée à bonne fin de réglage. On déplace de par moitié en arrière le plateau (5) du haut et de par moitié en avant le plateau (4) du bas, on positionne à 450 la plaque de verre (7) au moyen d'un coulisseau bloquant (14), la partie inférieure de cette plaque ayant été rendue semi-transparente par pulvérisation metallique. On fait alors coincider sur ce panneau les deux images de la mire 625 lignes par télécommande de réglage électronique horizontal et vertical du châssis solidaire du coffret (1).Dans ces conditions, on obtient une image de très haute définition (1250) et une stabilité double de celle des émissions reçues sur un téléviseur normal -soit 100 demiimages à la seconde au lieu de 50- d'où peu d'effet stroboscopique; dans le cas d'image transmise par bande magnétique, donc avec une définition moitié moindre (300 points), on obtient 600 points, d'où haute définition observée sans lunettes.The device works as follows: (fig.)
The frame - (2) is designed to obtain the inversion of the images of (3) polarized by a filter (12). The image of (3) is reflected in a semi-reflecting glass plate (7), placed at 450 of the horizontal and vertical image tubes put into operation. A test pattern of the same transmitter is sent for final adjustment. We move the tray (5) from top to half and from half to front the tray (4) from below, the glass plate (7) is positioned at 450 by means of a blocking slide (14), the lower part of this plate having been made semi-transparent by metal spraying. We then make the two images of the 625-line test pattern coincide on this panel by remote control for horizontal and vertical electronic adjustment of the chassis secured to the box (1). Under these conditions, we obtain a very high definition image (1250) and stability double that of the emissions received on a normal television - or 100 half images per second instead of 50 - hence little stroboscopic effect; in the case of an image transmitted by magnetic tape, therefore with half the resolution (300 points), 600 points are obtained, hence high definition observed without glasses.

Pour la stéréoscopie, la position de l'ensemble est expliquée aussi par la figure 3. Entrent en jeu le châssis (2), le tube (3),le verre (7) équipé de filtre et de matière réfléchissante. Le fonctionnement des deux tubes est identique. L'image du tube (3) est polarisée dans un sens 450 à droite par l'intermédiaire d'un filtre (12). Ce filtre est mis en opposition au filtre (10) polarisant l'image du tube du TV (6) en position horizontale. Les images reçues par la plaque de verre (7) -sur laquelle se reflètent l'image du tube (3) polarisée par le filtre (12) et celle du tube (6) de polarité différente- sont décalées (Le d & lage est identique à la fois à l'écartement des deux caméras et à celui des deux pupilles). Afin que l'image destinée à l'oeil droit ne soit pas perçue par l'oeil gauche et inversement, le port de lunettes équipées de filtres à polarisation circulaire inversée est indispensable. Cette vision permet la synthèse du relief au niveau du cortex visuel des images reçues par les deux yeux. For stereoscopy, the position of the assembly is also explained in Figure 3. The frame (2), the tube (3), the glass (7) fitted with filter and reflective material come into play. The operation of the two tubes is identical. The image of the tube (3) is polarized in a direction 450 to the right by means of a filter (12). This filter is placed in opposition to the filter (10) polarizing the image of the TV tube (6) in a horizontal position. The images received by the glass plate (7) - on which the image of the tube (3) polarized by the filter (12) and that of the tube (6) of different polarity are reflected - are offset (The image is identical to both the spacing of the two cameras and that of the two pupils). So that the image intended for the right eye is not perceived by the left eye and vice versa, the wearing of glasses equipped with filters with reverse circular polarization is essential. This vision allows the synthesis of the relief at the visual cortex of the images received by the two eyes.

Le réglage du décalage pourra être fait au moyen d'une télécommande; il est nécéssaire : certain observateur pourrait éprouver des maux de tête (hétérophorie), lesquels disparaîtraient dés que l'écartement correspondrait à la distance entre ses deux pupilles. The offset adjustment can be made using a remote control; it is necessary: some observers may experience headaches (heterophoria), which will disappear as soon as the distance corresponds to the distance between their two pupils.

Claims

1) Device for viewing several color television images on a single screen (7).

Characterized by two image tubes (3) and (6) in a cofftet, arranged at an angle of 900; one (3) horizontally, lrautre (ó) vertically. The two images are adapted to each other by an electronic adjustment of the chassis (2) and converge towards a glass screen (7) semi-reflecting downwards (11) covered with a polarizing filter (10) on its upper part, and tilted at 450 between the two tubes, allowing by this arrangement, a point of vision always equal to the distance between the two tubes: hence visible sharpness of the two images.

2) device according to claim 1), characterized by the independent vision of each eye. For the same image, the image of the tube (6) is polarized by the filter (10), a filter of a different polarity (12) must polarize the image of the tube (3).

The images appear on the screen (7) offset, allowing viewing through glasses which are equipped with filters for each eye and corresponding to the polarity of each tube (10) and (12); each eye perceiving an image of different polarity and the visual cortex performing the synthesis.

3) Device according to claims 1) and 2) characterized in that the color stereoscopic images are sent to the tubes (6) and (3) and polarized by means of filters (10) and (12) the images viewed with the filter ( 10) for the left eye and the filter (12) for the right eye, allowing the visual cortex to achieve vision.

4) Device according to claims 1) 2) and 3) characterized by the double performance obtained by the tubes (3) and (6) allowing a doubled emission of 625 lines, or 1250 lines, and a stoboscopic effect increased by 50 half -images to 100 half-images.

terrified by a reduced space requirement at rest (fi6.2).

521Device according to claim 1) 2) 3) and 4) charac