SU746956A1 - Device for static convergence of rays and control of light frequency of colour kinescope - Google Patents

Description

(54) DEVICE DL; I STATIC INFORMATION AND COLOR PURITY ADJUSTMENT

. I. . ,,

The invention relates to the field of body vision and can be used. color television receivers and video monitoring devices.

A device is known for static, convergence of rays and adjustment of color purity in a plenary color kinescope. the location of searchlights, in which ifjna convergence of rays, six annular permanent magnets are used, and for ps pulsing often the color is a toroidal magnetic circuit with coils 1 placed on it.

The disadvantages of the known device are the high laboriousness of the implementation of the convergence operation, which is performed manually by rotating the magnets directly on the neck of the kinescope, as well as the dependence of the adjustments of the rays and the purity of the color from each other. Jq

The closest to the invention to the technical essence is a device for static reduction of the rays and adjustment of the color purity in the color keV COLOR CINEMA

. an osprey with a plenary arrangement of spotlights containing a mixing unit and a 2j color purity unit.

In this device, a convergence unit is equipped with several regulating rings and ferrite magnets, and for adjusting the purity of the color, rings are used that are magnetized along its diameter.

The drawbacks of the device are the difficulty of mixing the beams and adjusting the purity of the color and the lack of accuracy of the mixing of the beams.

The purpose of the invention is to reduce tuning time and improve the accuracy of mixing.

: rays. :

This is due to the fact that the block is mixed, and the block of color purity is made in

Claims (1)

: a form of three rectangular frame magnesium pipelines} each equipped with two pole pieces with coils placed symmetrically on the smaller inner sides of the magnetic cores, one of which is common to the Lead unit: the NO and the color purity unit and the other two my corner and. pop direct angle fault, the coils of the sweep unit are connected in parallel, and the coils of the color purity unit - in series,. FIG. 1 is a structural diagram of the device of FIG. 2-5 - interaction of a magnetic field with electron beams. The device for static beam reduction and color purity adjustment contains a beam convergence block, made in the form of two rectangular frame magnetic cores 1 and 2, each of which has two pole tips 3, 4 and 5, 6 with coils 7, 8 and 9, 10 blocks information located cftMNieTrichno on the opposite inner sides of the magnetic cores 1 and 2, and connected in parallel. The magnetic cores 1 and 2 are rotated by 45 one: relative. other. The color purity adjustment block is made in the form of two magnetic cores t and 11, each of which has two pole tips 3, 4 and 12, 13, with coils 14, 15, and 16, .17 of the color purity block, also located symmetrically on opposite internal the sides of the magnetic cores 1 and 11, but connected in series. The magnetic cores 1 and 11 are rotated 90 ° one relative to the other. The device works as follows. The coils of the power supply unit and the power unit are connected to a regulated DC source. When DC current passes through coils 7, 8 and 9, 10 Magnetic cores I and 2 {see FIG. 3 and 4) magnetized so that & at the same time, that the tips 3, 4 and 5, b, respectively, for each ma; the gnoteurovoda have the same pole. This leads to the creation of a magnetic field in the cross section of the neck of the kinescope in the form of a four-pole lens with the same polarity of opposite poles. When this magnetic field in the field. the central beam is compensated. B, depending on the magnitude of the current flowing through the coils, the two extreme beams deviate about one or another way depending on (Losti on the polarity of switching on the source tiHtaHftlEt; moreover, the ducts of the kinescope do not move in opposite directions. the convergence operations smoothly change the voltage of the power source, the currents flowing through the coils, and the extreme rays coincide with the central ones. When converting vertically, magnetic circuit 2 is used with coils 9 and 10, and when horizontal alignment Alternatively, the voltage on the coils 7 and 8 of the magnetic circuit 1 is varied. Similarly, the purity of the color is adjusted. For vertical adjustment, the magnetic conductor 11 is used with series-connected coils 16 and 17 (see Fig. 5J) which create opposite ends on pole pieces 12 and 13 poles. With a gradual change in voltage, all three beams move in a vertical direction upwards. When passing through zero, the voltage of the power supply source reverses the direction of motion. For horizontal tensioning: it is fed to the coils 14 and 15 of the MeGNitpipe 1 (see Fig. 2). When the atom is radially displaced but horizontal. Thus, the proposed device allows to improve the accuracy of mixing the rays on the screen of the color kinescope and to ensure the speed of use of electric tricky controlled magnetic pills. The proposed device is more convenient to use, since when using the proposed device, the controllers of the convergence block and the color stitch block can be displayed on the front, panel of the Video Control Device or television receiver. Apparatus of the Invention A device for static convergence of rays and adjustment of color purity in a centrifugal kinescope with a planar arrangement of searchlights, containing a convergence unit and a color purity unit, which is designed to reduce setup time and increase Accuracy of the Rays, the block of information and the purity of the colors are executed in the form of three rectangular frame magnet guides, each equipped with two pole tips with x: atushkami, located symmetrically on the smaller inner sides of the magnetic cores, of which is common to downmix block and a block of color purity. , and two dru5746956 They are located relative to it rotated, respectively, to a right angle and half a right angle, the coils of the convergence unit being connected in parallel, and the coils of the color purity unit - in series. Sources of information taken into account in the examination I. For the UK UK number 1391798, CP. H 1p, Republican. 1975. s2. For the application of the Federal Republic of Germany No. 2438396, kpn. 01J 29/51, publ., 1976 (prototype).