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21.发明公开Compensation of picture tube ageing effects 审中-公开Kompensierung von Alterungseffekten在einerBildröhre
公开(公告)号：EP0969663A2
公开(公告)日：2000-01-05
申请号：EP99111627.8
申请日：1999-06-16
发明人： Sowig, Helmut
IPC分类号： H04N5/68
CPC分类号： H04N5/68
摘要： At the onset of ageing or in the further course of their service life, colour picture tubes relatively frequently exhibit a rise in the field strength between the cathode (K) and the Wehnelt electrode (G 1 ) of the respective beam system on account of a blooming effect of the cathodes (K) which is known per se and reduces the spacing between cathode (K) and Wehnelt electrode (G 1 ). The cut-off regulation reacts to an effect of this type in a manner such that the reverse voltage acting between cathode (K) and Wehnelt electrode (G 1 ) is correspondingly reduced in order to be able to drive the same reference cathode current. However, the reaction of the cut-off regulation must be taken into account for the circuit design since this would otherwise result in an unacceptable reduction in the modulation range, which would, in turn, have an adverse effect on the maximum contrast setting.
The invention provides a regulating device (10) which makes it possible to automatically compensate for an ageing-related change in the field strength between the cathode (K) and the Wehnelt electrode (G 1 ) of the respective tube system of a colour picture tube (1), the cut-off regulating voltage produced in the respective RGB colour channel on account of the cut-off regulation being used as the controlled variable for the regulating device (10).摘要翻译： 在老化的开始或在其使用寿命的进一步过程中，彩色显像管相对频繁地表现出由于起霜引起的各个光束系统的阴极（K）和Wehnelt电极（G1）之间的场强的上升 本身已知的阴极（K）的作用减小了阴极（K）和Wehnelt电极（G1）之间的间距。 截止调节以这样的方式对这种效应产生影响，使得在阴极（K）和Wehnelt电极（G1）之间作用的反向电压相应地减小，以便能够驱动相同的参考阴极电流。 然而，对于电路设计，必须考虑截止调节的反应，否则这将导致调制范围的不可接受的降低，这又将对最大对比度设置产生不利影响。 本发明提供一种调节装置（10），其能够自动补偿彩色显像管的各管系统的阴极（K）和Wehnelt电极（G1）之间的场强的老化相关变化（ 如图1所示，由于截止限制被用作用于调节装置（10）的受控变量的各个RGB色彩通道中产生的截止调节电压。
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公开(公告)号：EP0809398A3
公开(公告)日：1999-08-18
申请号：EP97108125.2
申请日：1997-05-20
申请人： NEC CORPORATION
发明人： Kuroda, Atsushi , Hiraga, Takashi
IPC分类号： H04N5/68
摘要： A cathode current detecting circuit capable of detecting a cathode current without delay and without lowering frequency characteristics of an applied video signal. This cathode current detecting circuit comprises a generator for generating a cathode current detection reference signal on the basis of a synchronization signal, an adder for adding the detection reference signal to a video signal, an amplifier for amplifying the added video signal, a transistor for applying the amplified video signal to a cathode of a cathode-ray tube, a current/voltage converter resistor for converting a cathode current 8 into a voltage, a frequency characteristic compensating capacitor connected in parallel to the transistor and a switch connected in series to the capacitor, wherein the switch is controlled in synchronization with the detection reference signal so as to be turned on during an active video signal display period and turned off during the cathode current detection period.
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公开(公告)号：EP0498813B1
公开(公告)日：1994-12-28
申请号：EP90915453.6
申请日：1990-10-27
CPC分类号： H04N9/645
摘要： With certain picture formats, for example, presentation of 16:9 picture on a 4:3 screen, the cut off signals for the dark radiation current regulation inserted into the video signal can become visible in the black bands. The task is to avoid such signals becoming visible on the screen. The measuring process for the cut off regulation only happens briefly, for example, always only shortly after switching on the receiver. The result of the measurement (Uco) is stored in a memory (14) and read out from the memory (14) during most of the operating time. In particular, color televison receivers for the presentation of differing picture formats.
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24.发明公开MOSAIC MONITOR FOR HIGHER RESOLUTION AND PRIVACY MEANS FOR AUDIO ACCOMODATIONS 失效用于音频服务的高分辨率和隐私手段的MOSAIC监视器
公开(公告)号：EP0507879A4
公开(公告)日：1993-06-23
申请号：EP91903193
申请日：1990-12-28
发明人： DUBRUCQ, DENYSE
CPC分类号： H04N9/3147 , H01J31/12 , H04N9/12
摘要： A mosaic of monitor units (201, 202, etc.) contained in a single covering (30) provide higher-resolution monitor displays proportional to the number of monitor units contained in the monitor casement. The extension of the flat viewing surface of the monitor in one or more directions accomodates a touch screen function both over the monitor surface and in the area surrounding it with one transparent layer between both the electronic image and marginal fixed markings. The touch response surface reduces parallax factors. A receiver and signal processor (5) which outputs dual signals, the first defining the image in a Standard Broadcast mode and the second providing selected sharpness where detail is required. The method of transmitting only changes in the high-resolution areas cuts data transmission and recorded data levels.
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27.发明公开Control system for head-up display for automotive vehicles 失效SteuerungssystemfürHeadup-DisplaysfürKraftfahrzeuge。
公开(公告)号：EP0340485A2
公开(公告)日：1989-11-08
申请号：EP89106350.5
申请日：1989-04-11
申请人： KANSEI CORPORATION
CPC分类号： G02B27/0101 , B60K2350/1064 , B60K2350/2052 , G02B27/01 , G09G3/20 , G09G3/3406 , G09G2320/0606 , G09G2320/0626
摘要： A noise suppressing arrangement in the form of an interface is provided between a data transfer circuit and a driver associated with a display unit VFD tube. The driver and power supply circuits associated with the display unit feature improved arrangements which attenuate surges and spike. The voltage appearing on the grid of the VFD is controlled by a circuit which is responsive to a signal produced by microcomputer which controls the illumination and which induces changes in the voltages applied across the filament of the VFD. The level of illumination can be automatically controlled by light sensor and illumintion levels above default values are automatically reset to optimal values each time the system is initially energized.
摘要翻译： 在数据传输电路和与显示单元VFD管相关联的驱动器之间提供了接口形式的噪声抑制装置。 与显示单元相关的驱动器和电源电路具有改进的布置，其减弱浪涌和尖峰。 出现在VFD格栅上的电压由一个电路控制，该电路响应于由微机产生的信号，该微控制器控制照明并且引起施加在VFD灯丝上的电压的变化。 照明水平可以由光传感器自动控制，并且在每次系统初始通电时，超过默认值的亮度自动重置为最佳值。
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28.发明公开
公开(公告)号：EP0316484A2
公开(公告)日：1989-05-24
申请号：EP87310073.9
申请日：1987-11-13
申请人： GROUP-N CORPORATION
发明人： Kido, Kazuyuki , Horiguchi, Harumi
CPC分类号： G11B27/10 , G11B19/28 , G11B27/002 , G11B2220/20
摘要： A method of and an apparatus for synchronizing reproduction using a plurality of video information reproducing systems are arranged such that synchronization pulses contained in video signals are integrated for each recording medium using as a starting point a required video postition identifying signal recorded on each recording medium, and integrated values are made to coincide with each other, thereby allowing the video information of all the recording media to be reproduced synchronously. Thus, since synchronization of reproduction is effected while the reproducing systems are operating, there is no need to temporarily stop the reproducing systems as has been done conventionally. Consequently, it is possible to effect synchronous reproduction even in the case of a CLV-type disk which cannot be temporarily stopped. In addition, the time duration required for synchronization can be reduced.
摘要翻译： 的并为使用视频信息再现系统的多个同步再现装置的方法，被布置搜索没有包含在视频信号的同步脉冲被集成用于使用作为起点所需的视频postition识别记录在每个记录介质上的信号每个记录介质， 和积分值被制成与海誓山盟重合，从而允许所有的记录介质的视频信息将被同步地再现。 因此，由于再现同步而再生系统运行的影响，也没有必要暂时停止再生系统一直以来完成。 因此，有可能即使在不能暂时停止CLV型光盘的情况下实现同步再现。 此外，同步所需的持续时间可以被减少。
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公开(公告)号：EP0041554B1
公开(公告)日：1987-03-25
申请号：EP81900158.7
申请日：1980-10-14
申请人： MOTOROLA, INC.
发明人： PERKINS, Geoffrey W.
CPC分类号： H04N5/141
摘要： A peak beam current leveler for use in a television receiver system which is responsive to the magnitude of the beam current supplied to the cathode of the cathode ray tube (CRT) exceeding a predetermined peak level to adjust the cathode peak beam current accordingly. The cathode beam current is supplied by a gain controlled video amplifier (38) to the cathode through the base-emitter junction of a transistor (56) The collector electrode of the transistor is connected with a resistor (58) for providing a voltage level proportional to the peak beam cathode current. A comparator circuit (70-80) is utilized to provide a gain control signal that controls the gain of the gain controlled video amplifier such that the higher the beam current the more gain reduction that occurs. Thus, the level of the peak current is automatically reduced to maintain good focusing of the display on the CRT.
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公开(公告)号：EP0199541A2
公开(公告)日：1986-10-29
申请号：EP86302848.6
申请日：1986-04-16
CPC分类号： H04N9/72
摘要： A television receiver with a planar faceplate kinescope includes an automatic kinescope bias (AKB) control system (14a,b,c) wherein the kinescope electron gun (16, 18) is energized to induce a cathode input current, representative of the kinescope black image current level, in response to an auxiliary drive signal (V G ) applied to the electron gun during AKB operating intervals. The auxiliary signal (V G ) exhibits an amplitude for inducing the cathode current only during horizontal trace intervals encompassed by the interval when the auxiliary signal occurs.
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