SU1146834A1 - Signal-lens stereo colour camera tube and stereo colour television receiver - Google Patents

Abstract

1. Single-lens stereo-color transmitting television camera containing successively located lens, in the plane of the aperture diaphragm of which an optical coding element consisting of three horizontally disposed parts is mounted, a color separation unit, three transmitting television tubes, the outputs of which through the amplifier unit are connected to the inputs of the encoding matrix distinguished by ri:, v ..... Ly so that, in order to increase sensitivity and simplify the transmitting television camera, as well as improve stimosti generated in the imaging system in the optical element encoding one of the extreme horizontal portions having spectral transmittance characteristics of the red component of the spectrum, other horizontally raspotlozhenna portion - the blue component of the spectrum, while the central horizontally located portion is transparent for all components of the luminous flux. 2. Stereo color television receiving device containing a G-Y matrix whose two inputs are (P inputs of color difference signals, a block of video end amplifiers, the first input of which is the input of a luminous signal, and the outputs are connected to the corresponding electrodes of a color kinescope, about 20 This is due to the fact that an additional, extractively-encoding matrix was entered, O5 one input of which is connected to the output of the GY-matrix, the other inputs of connection 4 ;; are not connected with the corresponding inputs of the GY-matrix, and outputs are connected to corresponding1 1p1 inputs of the terminal amplifier unit.

Description

I The invention relates to television and is intended for use in applied and broadcast television for the transmission of color, two-dimensional and stereoscopic (three-dimensional) television (TV) images. A single-lens stereo-color transmission is known: a TV camera containing successively arranged lenses, in the plane of the aperture diaphragm of which an optical coding element consisting of three horizontally disposed parts, a color separation unit, analyzers, two transmitting TV tubes of the luminous signal, are connected through appropriate amplifiers the corresponding inputs of the subtraction matrix, three transmitting TV tubes, c this area signals, the outputs of which are connected to the input through an amplifier unit and the coding matrix, the output of which is connected to the third input of the subtractive matrix, the optical coding element is polaroid and erp extreme, the parts are made with polarization directions orthogonal to each other, and the central part has a polarization i45 relative to the extreme parts, and the analyzers are installed in front of two TV transmitting tubes of luminance signals 1 3 A known stereo color receiving TV device containing a GY matrix, the two inputs of which are the inputs of color difference signals,., block of video terminals preamplifier, whose first input is an input luminance signal, and the outputs of which are connected to the respective electrodes of the kinescope tsvetnog.o C23. In the known device, the use of polarizers in the coding element and analyzers in front of the transmitting TV tubes leads to significant light losses, i.e. deterioration of the sensitivity of the transmitting TV camera in comparison with the usual color one, its complication and rise in price due to the presence of an additional luminous transmitting TV tube, and underlining the stereo contours in the Pfiu.e. leads to degraded compatibility, since the viewer without anaglyphic glasses sees a double circuit 42 on a regular TV receiver for some details. The purpose of the invention is to increase the sensitivity and simplify the transmitting TV camera, as well as improve the compatibility of the image generated in the system. This goal is achieved by the fact that in a single-lens stereo-color transmitting TV camera containing successively located lens, in the plane of the aperture diaphragm of which an optical coding element consisting of three horizontally located parts is installed, a color separation unit, three transmitting TV tubes, whose outputs through the amplifier unit are connected with the inputs of the coding matrix, in the optical coding element, one of the extreme horizontally located parts has the characteristic spectral gap Ani red spectral component, other horizontally located portion - the blue component of the spectrum, while the central horizontally located portion is transparent for all components of the luminous flux. A stereo-color receiving TV device containing a GY-matrix, two inputs of which are the inputs of color-difference signals, a block of terminal video amplifiers, the first input of which is 1 input of a luminous signal, and the outputs are connected to the corresponding electrodes of a color kinescope, an additional subtractive-coding matrix is inserted one input of which is connected to the output of the GY-matrix, the other inputs are connected to the corresponding inputs of the GY-matrix, and the outputs are connected to the corresponding inputs of the terminal video amplifier unit. FIGS. 1 and 2 show structural electrical diagrams of a single-lens stereo color transmitting TV camera and stereo color receiving TV device; in fig. 3 spectral options. coding module. A single-lens stereo-color transmitting TV camera D (Fig. 1) contains a lens 1 with an optical coding element 2, a color separation unit 3, transmitting TV tubes 4-1, 4-2, 4-3 W, R, B channels, an amplifier block 5 and encoding matrix 6.

The stereo color receiving TV device (Fig. 2) contains a G-Y matrix 7, a subtractive-coding matrix 8, a block of 9 terminal video amplifiers, a color TV tube 10, and anaglyphic 11.

The device works in the following way.

Lens 1 projects the image of the observed relief through the optical coding element 2 and the color separation unit 3 onto the photo cathodes of the transmitting TV tubes 4. The optical coding element 2 consists of three horizontally disposed parts, transparent to all three components R, W, B of the light flux, one is extreme, for example, left, for R, and a dredge, for example, rights for B component. Such a construction of the optical coding element 2 allows using almost its entire area, which reduces the light losses and improves the sensitivity of the transmitting TV camera. At the same time, the working apertures for the R, W and B components (Fig. 3B) represent almost the circle and the defocused boundaries of the color-separated images do not stratify on the screens of conventional receivers (Fig. A), i.e. image is compatible. The light losses are reduced both by using a larger area and by replacing the polaroid element with analyzers with a spectral one working in conjunction with the color separation unit 3. The color separation image signals from the transmitting TV tubes 4 through the corresponding amplifiers of the unit 5 are fed to the encoding matrix 6, where The capacitance signal Ey and the color difference signals Es, U, E- compatible with black-and-white and color television receivers. In a stereo color TV receiver, a signal is generated using G-Y matrices 7. In a conventional receiver, the signals E, E | y, E g, y and Eg.y through the final amplifiers of block 9 are fed to the corresponding inputs of a color TV tube 10. But the resulting image is compatible and the stereo effect is not felt in it. To form a stereo color image with underlined

saturated parallactic edging, installed subtractive-code-. matrix 8. In it, the signals E ,,, Ej and E g.y are converted by means of subtraction into the signals E, E ",. The gains of the channels R, W, and B are chosen equal, as a result of which the transmission of black and white gradations is the same, which allows one to obtain by subtracting the signals

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Anaglyph glasses 11 have a spectral transmittance characteristic corresponding to that of optical coding element 2. A subtractive coding matrix 8 is installed in a conventional color TV receiver via a Monostereo switch, which allows it to be used to receive conventional and stereo color TV programs. The diagrams (fig. 3 c, d, e) show which brightness boundaries L (Z) are formed in line Z depending on the shape of the module: c - without a module (single), g - a module with a darkened part (double contour), d - proposed module (single wide without matrix and double-contour after subtractive-coding matrix 8).

The presence of dichroic coatings in the optical coding element (Fig. 3a) instead of polarizers analyzers in the polar element substantially reduces the light loss, which three times improves the sensitivity of the device.

The formation of the stereo-color signal by the optical coding element 2 together with the subtractive coding matrix 8 simplifies the color TV camera by reducing the number of transmitting TV tubes from five to three. In this case, the image is formed compatible, i.e. Such an implementation of an optical coding element permits to encode fringes on the transmitter side, feed them, make them inconspicuous and restore (underline) on the receiver side by means of a subtractive coding matrix.

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Claims (2)

1. A single-lens stereo-color transmitting television camera containing a sequentially located lens, in the plane of the aperture diaphragm of which an optical coding element is installed, consisting of three-horizontally located parts, a color splitter, three transmitting television tubes, the outputs of which are connected through the amplifiers to the inputs of the encoding matrix, characterized in that in order to increase the sensitivity and simplify the transmitting television camera, as well as improve the compatibility of the form emogo in the image system, in the optical element encoding one of the extreme horizontal portions has a characteristic spectral transmission spectrum of the red component, the other horizontally raspo'lozhennaya portion - the blue component of the spectrum, while the central horizontally situated portion transparent to the luminous flux of all components. 2. A stereo-color television reception device containing a G-matrix, two inputs of which are color-difference signal inputs, a terminal video amplifier unit, the first input of which is a brightness signal input, and the outputs are connected to the corresponding color picture tube electrodes, which e with the fact that introduced additional—. A real subtractive-coding matrix, one input of which is connected to the output of the G-Y matrix, other inputs are connected to the corresponding inputs of the G-Y matrix, and the outputs are connected to the corresponding inputs of the terminal video amplifier block.