• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Circuit arrangement for the shaded (gray-scale) displaying of images on display boards having individual luminous elements arranged in a matrix, wherein switching circuits of the luminous elements are connected to row and column bars, and each bar is coupled to a selecting circuit either directly or through a store element. Each switching circuit includes an analog memory, a comparator with a constant threshold level, and a power switch. The memory is preferably a capacitor which is connected - over a switching element - between the respective row bar and column bar. A function generator supplying a monotonously varying periodic signal is connected to the bars that are directly connected to the capacitors whereas a video-signal transmitter is connected to the bars that are linked to the switching elements.
    公开号:SU710531A3
    申请号:SU772498596
    申请日:1977-06-28
    公开日:1980-01-15
    发明作者:Габор Магош；Йожеф Салаи
    申请人:Вилламош Берендезеш Еш Кесюлек Мювек (Инопредприятие)；
    IPC主号:
    专利说明:

    Soviet Union to
    Socialistically to
    Republics
    USSR State Committee for Inventions and Discoveries
    DESCRIPTION OF THE INVENTION
    TO THE PATENT (6!) Additional to the patent - (22) Declared 280677 (21) 2498596 / 18-24 (23) Priority - (32) 29.06.76 (31) U1-1087 (33) ВНР ’
    Published 1/15/80 Bulletin No. 2
    Date of publication of the description 15.01.80
    G06 K 15/18 (53) UDC 681 . 327 (088.8)
    (72) Authors Foreigners inventions G. Magosh and J. Salai(Hungary)Foreign company (71) Applicant '' Villamos Berendesesh Yes Kesyulek Muvek '' * 1 (Hungary)
    (54) THE DEVICE FOR REGULATING THE BRIGHTNESS OF THE INDICATOR ELEMENT additionally contains a periodic signal generator, a second resistor, a capacitor, a symmetric thyristor and a transistor, the emitter of which is connected to the zero potential bus, the collector - with one terminal of the second resistor and a symmetric thyristor ^ base connected to the anode the first diode and one terminal of the first resistor, while the other terminals of the resistors are connected to the power bus, one capacitor plate is connected to the cathode of the first and the anode of the second diode, and the other lining - with a periodic signal generator, the cathode of the second diode is connected • to the source of the information signal, the other terminal of the symmetric thyristor is connected to the zero bus
    2® potential, and the third with an indicator element.
    The scheme of the proposed device is presented in the drawing.
    The device contains resistors 1 and 2, a transistor 3, diodes 4,5, a capacitor 6, a symmetric thyristor 7, an indicator element 8, a periodic signal generator 9, a diode 10, buses 11 and 12, a power bus 13.
    The invention can be used in information display devices, in particular, in matrix display boards.
    A device for indicating. containing memory cells connected to indicator lamps that are connected to the power bus, a blanking unit and a key [1]. Such an indicator device cannot reproduce an image with different brightness.
    The closest technical solution to the invention is a device for regulating the brightness of the indicator element, containing inductors connected to the input of one of the series-connected inverters, diodes, resistor and elem, indication element connected to an alternating voltage source [2]; The disadvantage of this device is its complexity.
    The purpose of the invention is to simplify the device.
    For this, a device for regulating the brightness of the indicator element, containing the first resistor, two series-connected diodes and an AC voltage source connected to the indicator element, up to 3
    The resistors 1 and 2, the diode 4 and the transistor 3 form a comparator with a threshold voltage wound to zero. In the conductive state, the transistor 3 passes the current and locks the symmetric thyristor 7, therefore, the indicator element 8 does not glow. Information is recorded through a diode: 5. A control pulse with an amplitude of 20 V is applied to bus 11, and a voltage corresponding to an information signal whose voltage is between 0 and 10 V is applied to bus 12. The difference between these voltages is recorded in capacitor 6. At the end of the control '_ pulse, information is also recorded. and the signal until the next recording period is stored in the capacitor.
    A periodic signal with a maximum amplitude of 10 V duration, 20 equal to half the period of current fluctuations in the network, is applied to the bus 11 from the generator 9. At each moment of time, the instantaneous value of the amplitude of this voltage is added to the voltage on the capacitor 6, i.e. comparator 25 controls the sum of the information signal and the instantaneous signal of this periodic function. The comparator is triggered only at that time when the specified total voltage 3Q at the input of the comparator is less than zero. If the information signal corresponds to a dark state, then the total voltage only for a very short period of time remains below the threshold. · The value of zero, or does not decrease at all to this level, i.e. incandescent lamp does not light. If the information signal recorded on the capacitor corresponds to the level of 'bright' 1 , then the total voltage almost during the entire image period causes a negative voltage at the input of the comparator, which corresponds to an inclusion ratio of about 1.0. At full 45 luminescence intensity, the lamp is supplied with a longer time.
    Capacitor b and resistor 1 form an RC circuit, the time constant 50 of which is chosen so that the capacitor partially discharges during the image period. If information changes slowly, then this is immaterial. ξζ
    To reproduce rapidly changing information, it is advisable to introduce a diode 10 into the device, through which a capacitor 6 can be shunted or a discharge can occur to a certain potential. The discharge "0" diode 10 is connected to the input of the comparator so that its polarity becomes opposite to the polarity of the diode 5 operating in the charge process. 65
    This device provides 'receiving' a brightness-modulated image with a blinking frequency of 100 Hz (at a mains frequency of 50 Hz), i.e. blinking is not felt.
    The signal from the periodic signal generator 9 is synchronized with a half-period of the mains voltage, i.e. an unambiguous connection is made between the total signal supplied to the input of the comparator and the ignition angle of the symmetric thyristor. With an increase in the ignition angle, the duration of the power supply of the indicator lamps increases.
    It is advisable to provide a linear relationship between the intensity of the glow of the indicator elements and the information signal. This can be achieved over the entire ignition range, if the shape of the monotonically changing signal of generator 9 is selected accordingly. If the lamps are supplied with direct current and preheated, the curved function is smoothed and approaches in shape to a sawtooth signal.
    权利要求:
    Claims (2)
    [1]
    Rheisors 1 and 2, diode 4 and transistor 3 form a comparator with a threshold voltage equal to zero. In the conducting state, the transistor 3 transmits a current and closes the symmetrical thyristor 7, therefore the indicator cell 8 does not light up. Information is recorded through a diode: 5. A bus is applied to bus 11. A pulse with an amplitude of 20 V to bus 12 is the voltage corresponding to the information signal, the voltage of which is from 0 to 10 V. The difference between these voltages is fixed in the capacitor 6. At the end of the control pulse ends and Information recording and signal until the next recording period is stored in a capacitor. A periodic signal is applied to the bus 11 from the generator 9 with a maximum amplitude of 10 B and a duration equal to half the period of current oscillations in the network. At each moment in time, the instantaneous value of the amplitude of this voltage is added to the voltage on the capacitor 6, i.e. The comparator controls the sum of the information signal and the instantaneous signal of this periodic function. The comparator operates only in that time interval when the specified total voltage at the comparator input is less than zero. If the information signal corresponds to the dark state, then the total voltage for only a very short period of time remains below the threshold. or zero at all, i.e. incandescent lamp does not shine. If the information signal recorded on the capacitor corresponds to the level very well, then the total voltage for almost the entire image period causes a negative voltage at the input of the comparator, which corresponds to an inclusion ratio of about 1.0. At full light intensity, the lamp is energized for a longer time. Capacitor B and resistor 1 form an Rc-chain, the time constant of which is chosen so that the capacitor is partially discharged during the image period. If the information changes slowly, then this is insignificant. To reproduce the fast-changing information, it is advisable to insert a diode 10 into the device, through which a capacitor 6 can be bridged or a discharge can occur to a certain potential. The discharge diode 10 is connected to the input of the comparator so that its polarity becomes opposite to the polarity of the diode 5 operating during the charging process. This device provides an image-modulated image with a blink rate of 100 Hz (at a network frequency of 50 Hz), i.e. blinking is not felt. The signal from the periodic signal generator 9 is synchronized with the network voltage half-period, i.e. an unambiguous connection is made between the sum signal received at the input of the comparator and the firing angle of the symmetric thyristor. Increasing the ignition angle increases the duration of the power indicator lights. It is advisable to provide a linear link between the luminescence intensity of the indicator elements and the information signal. This can be achieved in the entire ignition range if the monotonically varying signal of generator 9 is selected accordingly. If the lamps are supplied with direct current and preheated, the curvilinear function is smoothed and approximates the sawtooth signal. Apparatus of the Invention A device for controlling the brightness of an indicator element comprising a first resistor, two diodes connected in series and a source of alternating voltage connected to an indicator element, characterized in that, in order to simplify the device, it further comprises a periodic signal generator, a second resistor, a capacitor, a symmetrical thyristor and a transistor, the emitter of which is connected to the zero potential bus, the collector with one of the terminals of the second resistor and the symmetrical thyristor, the base is connected to the anode of the first diode and one terminal of the first resistor, while the other terminals of the resistors are connected to the power bus, one capacitor plate is connected to the cathode of the first and the anode of the second diode, and the other plate to the periodic signal generator, the cathode of the second diode is connected to the information source signal, another output of a symmetrical thyristor is connected to the zero potential bus, and the third is connected to the indicator element. Sources of information taken into account in the examination 1. USSR author's certificate number 432559, cl. Cr 06 K 15/18, 1972.
    [2]
    2. US patent number 3827042, cl. 340-335, published. 1974 (prototype).
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    同族专利:
    公开号 | 公开日
    JPS533021A|1978-01-12|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1141322C2|1959-10-02|1963-06-27|
    US3590156A|1968-08-28|1971-06-29|Zenith Radio Corp|Flat panel display system with time-modulated gray scale|
    US3609747A|1968-12-05|1971-09-28|Bell Telephone Labor Inc|Solid-state display circuit with inherent memory|
    JPS6131670B2|1977-06-16|1986-07-22|Sony Corp|US4087792A|1977-03-03|1978-05-02|Westinghouse Electric Corp.|Electro-optic display system|
    JPS6131670B2|1977-06-16|1986-07-22|Sony Corp|
    JPS6127591B2|1977-10-07|1986-06-26|Hitachi Ltd|
    JPS5856877B2|1979-05-29|1983-12-16|Mitsubishi Electric Corp|
    DE3026392C2|1980-02-26|1985-08-22|Sharp K.K., Osaka|Display device with an electroluminescent thin-film element for displaying images|
    US4283659A|1980-04-07|1981-08-11|The Singer Company|Display system utilizing incandescent lamp multiplexing|
    US4398725A|1982-10-20|1983-08-16|Hitachi, Ltd.|Rotary shaft water seal device in hydraulic machine|
    US4578731A|1984-02-03|1986-03-25|Assistance Maintenance Construction Electrique|Device for supplying an electric receiver whose position on a surface is variable|
    FR2540683B1|1983-02-04|1989-01-06|Assistance Maintenance Const E|DEVICE FOR SUPPLYING AN ELECTRIC RECEIVER WITH VARIABLE POSITION ON A SURFACE|
    US4502702A|1984-06-08|1985-03-05|Nixon Robert J Jr|Segmented seal for rotary equipment|
    US4771278A|1986-07-28|1988-09-13|Charles Pooley|Modular large-size forming lamp matrix system|
    USRE34135E|1987-10-02|1992-12-01|Intergrated Systems|Light matrix display system|
    US4820956A|1987-10-02|1989-04-11|Integrated Systems Engineering, Inc.|Light matrix display system|
    HU201193B|1988-06-21|1990-09-28|Jozsef Ladanyi|Process and switchgear for regulating the light intensity of gas-discharge tubes|
    US5026152A|1989-02-15|1991-06-25|Sharkey Steven D|Enhanced cinema system|
    US8698706B1|2001-10-23|2014-04-15|Imaging Systems Technology, Inc.|Organic electroluminescent display device driving method and apparatus|
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    US7834679B2|2007-02-06|2010-11-16|Panasonic Corporation|Semiconductor switch|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    HU76VI1087A|HU177273B|1976-06-29|1976-06-29|Circuit arrangement for representing picture of delicate gradation on display boards consisting of individual sources of light in matrix arrangement|
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