SU547796A1

SU547796A1 - Device for displaying information

Info

Publication number: SU547796A1
Application number: SU2132470A
Authority: SU
Inventors: Владимир Яковлевич Глубчик
Original assignee: Ордена Ленина Институт Кибернетики Ан Украинской Сср
Priority date: 1975-05-11
Filing date: 1975-05-11
Publication date: 1977-02-25

Description

1one

Изобретение относитс к автоматике и вычислительной технике и может быть испольвовано при построении устройства отображени Графической информации.The invention relates to automation and computer technology and can be used in the construction of a graphic information display device.

Известны устройства дл отображени и формации на экране электроннолучевой трубки (ЭЛТ) содержащие регистры кода по координатам X и У преобразователи код-напр жение , индикатор и видеоусилитель 1. Этому устройству свойственно невысокое качество отображени .Devices for displaying and forming a cathode-ray tube (CRT) on the screen are known, which contain code registers along the X and Y coordinates, code-voltage converters, an indicator, and a video amplifier 1. This device is characterized by a low display quality.

Наиболее близким по технической сущности к изобретению вл етс устройство, содержащее преобразователи код-напр жение по координатам X и У, соединенные с регистрами кодов по координатам ХиУ, электроннолучевую трубку, подключенную к видеоусилителю и усилител м отклонени по координатам ХиУ 2.The closest in technical essence to the invention is a device containing code-voltage transducers at X and Y coordinates, connected to the registers of codes of the ChIU coordinates, an electron-beam tube connected to the video amplifier and amplifiers of the Chei 2 coordinates.

Невысокое качество изображени этого устройства, несовпадение начальной и конечной точки замкнутых контуров, несовпадение точек, имеющих одинаковые адреса на экране ЭЛТ, асимметри точек симметричных относительно осей координат, отличие одиначковых изображений, полученных различнойThe low quality of the image of this device, the discrepancy between the initial and the end point of the closed contours, the discrepancy between the points having the same addresses on the CRT screen, the asymmetry of the points symmetrical with respect to the coordinate axes, the difference of the same-character images obtained by different

последовательностью задани адресов точек контура, зависимость формы получаемого изображени от предыстории вывода участков контура св заны с гистерезисными влени ми в сердечнике отклон ющей системыthe sequence of specifying the addresses of the contour points, the dependence of the shape of the resulting image on the history of the output of the contour sections are associated with hysteresis in the core of the deflecting system

Кроме этого, замена отклон ющей системы , или нова ее регулировка, например, дл уменьшени подущкообразных и/или бочкообразных искажений по кра м растра ЭЛТ, приводит к изменению характера нарушений в качестве изображени .In addition, the replacement of the deflecting system, or its new adjustment, for example, to reduce substop and / or barrel distortions along the edges of the CRT screen, leads to a change in the nature of the image quality disorders.

Цель изобретени - повышение качества отображени .The purpose of the invention is to improve the quality of the display.

Claims

This is achieved by inserting the degaussing unit of the deflecting system of the CRT control keys on the X and Y coordinates and the voltage driver into the device for displaying information, and the degaussing block of the deflecting CRT system is connected to the video amplifier, the control keys to the Coordinates connected to the inputs and the outputs of the amplifiers deviations along the X and Y coordinates and with code-voltage converters along the X and Y coordinates, and the driver on the arrays connected with the control keys along the X and Y coordinates, connected to a CRT, tezhe is a block diagram of the proposed device. Devices for displaying information contains voltage code 1 and 2 converters on X and Y coordinates, deviation amplifiers 3 and 4 on X and Y coordinates, video amplifier 6, registers of X and Y codes on coordinates 7 and 8, and demagnetization unit 9 of the deflection system CRT 5, control keys 10 and 11 along the X and Y coordinates of the voltage driver 12. The device operates as follows. The digital computer receives the X and Y codes on the registers of codes 7 and 8 along the X and Y coordinates. Block 9 of demagnetization of the deflection system of the CRT is switched on by the falling edge of the modulation pulse of video amplifier 6, i.e., at the moment when the next image point is highlighted ended The control signal generated by the demagnetizing unit 9 of the CRT system generated by the control unit 9 and 11 along the coordinates X and. The code-voltage 1 and 2 along the X and Y coordinates with the inputs of the deflection amplifiers 3 and 4 open the connection between the transducers of the converters. on coordination athame X and Y and positive zamisao chain ksplbinirovannoy inverse communication deflection amplifiers outputs 3 and 4, the coordinates X and. Have and deflecting system CRT 5 with their inputs. The depth and polarity of the positive feedback are chosen so that the amplifiers of clones 3 and 4 along the coordinates X and Y switch to self-excitation with the generation of non-damping sinusoidal oscillations of the scientific research institute in the deflecting system of the CRT 5. Simultaneously the block 9 is demagnetized by the deflection system The CRT turns on a voltage driver 12, which forms a falling exponential voltage, nt going to the deflection amplifiers 3 and 4 of the X and Y coordinates. The bending sinusoidal current in the coils from the back of the CRT 5 equal to the exponent. After a certain period of time (this time is set by the degaussing unit 9 of the deflecting system of the CRT using a time meter of any type, the exponential voltage and, accordingly, the synchronous current in the deflecting system of the CRT 5 drops to zero and block 9 closes the control keys 1О and 11 The X and Y coordinates of the circuit of the converters are connected to the code of the voltage 1 and 2. It opens the circuits of the positive feedback. Due to the described character of the current change in the deflecting system of the CRT 5, its core is fully demagnetized and inductive Qi is zero in it (like a tape in a tape recorder after passing under an erasing head.). The device completely returned to its original state. The movement of the CRT 5 beam to the next image point starts under conditions that are the same for all previous and subsequent points, which eliminates distortion inherent in the device prototype. Formula of the invention A device for displaying information containing code-voltage converters in the X and Y coordinates, connected to the registrars of the codes in the X and Y coordinates, an electron-beam tube (CRT), The deviations along the X and Y coordinates are connected to the video amplifier and wired 1-1, so that, in order to improve the quality of information display, the demagnetizing unit of the deflection system of the CRT, control keys along the X coordinates are entered into it and Y and a voltage driver, the degaussing unit of the deflecting system of the CRT being connected to a video amplifier, control keys 1 and X and Y, connected to the inputs and outputs of the deviation amplifiers in X and Y coordinates and converting code-voltage along the coordinates X and Y and formir a voltage related to the control keys on the X and Y coordinates connected to the CRT. Sources of information taken into account in the examination: 1, UK Patent No. 1311763 Cl. HrTub. December 6, 1997, 2, Bezrodny, MS. Fundamentals of the construction of operative information output devices, Moscow, Energiya, 1973, pp. 71-73, fig. 29 (prototype).

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