公开(公告)号：US5600212A

公开(公告)日：1997-02-04

申请号：US19979

申请日：1993-02-22

申请人： Gangolf Hirtz ,  Bernd Bader ,  Yves Francois ,  Bernd Tenconi ,  Fritz Ohnemus

发明人： Gangolf Hirtz ,  Bernd Bader ,  Yves Francois ,  Bernd Tenconi ,  Fritz Ohnemus

IPC分类号： H01J29/70 ,  H01J29/76 ,  H01J29/82 ,  H04N3/30 ,  H04N3/32 ,  G09G1/04

CPC分类号： B82Y15/00 ,  H01J29/705 ,  H01J29/762 ,  H01J29/823 ,  H04N3/30 ,  H04N3/32 ,  H01J2229/5687 ,  H01J2229/7037

摘要： A deflection method and circuit for symmetrical horizontal scanning in a television tube utilizes a vertical deflection coil and an auxiliary vertical deflection coil. The vertical deflection coil is energized with a sawtooth vertical scanning current having a first slope during vertical trace to generate a first vertical deflection field. The auxiliary vertical deflection coil is energized with a sawtooth vertical auxiliary current having a line frequency and a second slope during horizontal trace equal but opposite to the first slope of the vertical scanning current to generate a second vertical deflection field. The first and second vertical deflection fields are superimposed in the tube to produce a stepped vertical deflection field.

摘要翻译： 电视管中的对称水平扫描的偏转方法和电路利用垂直偏转线圈和辅助垂直偏转线圈。 垂直偏转线圈在垂直走线期间具有具有第一斜率的锯齿形垂直扫描电流来激励，以产生第一垂直偏转场。 辅助垂直偏转线圈在垂直扫描电流的第一斜率等于但相反的水平轨迹期间具有线频率和第二斜率的锯齿形垂直辅助电流，以产生第二垂直偏转场。 第一和第二垂直偏转场叠加在管中以产生阶梯式垂直偏转场。

公开(公告)号：US5077501A

公开(公告)日：1991-12-31

申请号：US235652

申请日：1988-08-24

申请人： Uwe Hartmann ,  Franz Dieterle ,  Fritz Ohnemus

发明人： Uwe Hartmann ,  Franz Dieterle ,  Fritz Ohnemus

IPC分类号： H01J29/76 ,  H04N3/23 ,  H04N3/237

CPC分类号： H04N3/237

摘要： A circuit for correcting geometrical distortions in reproducing signals on a screen of a cathode-ray tube in a display monitor. A line-frequency correction current having line deflection frequency is coupled into the vertical deflection unit which serves for deflecting vertically electron beams in the cathode-ray tube. A circuit which provides horizontal deflection current is connected to the primary winding of a differential transformer. The differential transformer has a secondary winding connected to the circuit which supplies vertical deflection current. The distortion is reflected by a cathode-ray tube which has a substantially flat picture screen, in which horizontal lines to be displayed form in angle with a horizontal reference grid.

摘要翻译： 一种用于校正显示监视器中阴极射线管屏幕上再现信号的几何失真的电路。 具有线偏转频率的线频率校正电流被耦合到用于偏转阴极射线管中的垂直电子束的垂直偏转单元。 提供水平偏转电流的电路连接到差动变压器的初级绕组。 差动变压器具有连接到提供垂直偏转电流的电路的次级绕组。 失真由具有基本上平坦的画面的阴极射线管反射，其中要显示的水平线与水平参考栅格成角度。

公开(公告)号：US4992872A

公开(公告)日：1991-02-12

申请号：US162293

申请日：1988-02-19

申请人： Uwe Hartmann ,  Udo Mai ,  Fritz Ohnemus

发明人： Uwe Hartmann ,  Udo Mai ,  Fritz Ohnemus

IPC分类号： H04N5/04 ,  H04N5/45

CPC分类号： H04N5/45

摘要： A process for synchronizing horizontal deflection of electron beams in television recievers having a reproduced picture with a visible component, when no transmission signals from a television transmitter are present. If an emitted signal is not available, the synchronization is suspended during the time of the visible picture trace, and is activated only during the picture blanking time. For this purpose, the procedure is to switch off a circuit that synchronizes horizontal deflection during the visible component of the reproduced picture. A synchronization circuit is activated only while the picture is being blanked.

摘要翻译： 当没有来自电视发射机的发射信号时，使具有再现图像的电视接收机的电子束的水平偏转与可见分量同步的过程。 如果发出的信号不可用，则在可见图像跟踪期间暂停同步，仅在图像消隐时间内激活。 为此，该过程是关闭在再现图像的可视分量期间同步水平偏转的电路。 同步电路仅在图像被消隐时被激活。

公开(公告)号：US5767918A

公开(公告)日：1998-06-16

申请号：US517400

申请日：1995-08-21

申请人： Uwe Hartmann ,  Udo Mai ,  Fritz Ohnemus

发明人： Uwe Hartmann ,  Udo Mai ,  Fritz Ohnemus

IPC分类号： H04N5/445 ,  H04N5/44

CPC分类号： H04N5/445

摘要： A television receiver providing a stable image whether or not a composite color signal is present, in which a transmitter-recognition processes the television synchronization signals of the composite color signal. A character generator displays alphanumeric as well as graphic characters. The deflection generators and the character generator are operative with TV signals as well as characters that are alphanumeric as well as graphic. The deflection generators and the character generator are driven by control signals. An oscillator controls the deflection generators, and a phase comparator operates in the presence of synchronization signals to synchronize the oscillator. The phase comparator receives no signals from the input terminal when no synchronization signals are present, so that the oscillator oscillates at a fixed preadjustable frequency to provide a stable image.

摘要翻译： 提供稳定图像的电视接收机，无论是否存在复合颜色信号，其中发射机识别处理复合颜色信号的电视同步信号。 字符生成器显示字母数字和图形字符。 偏转发生器和字符发生器与电视信号以及字母数字和图形的字符一起操作。 偏转发生器和字符发生器由控制信号驱动。 振荡器控制偏转发生器，并且相位比较器在存在同步信号的情况下操作以使振荡器同步。 当没有同步信号存在时，相位比较器不接收来自输入端的信号，使得振荡器以固定的可预先调节的频率振荡以提供稳定的图像。

公开(公告)号：US4841251A

公开(公告)日：1989-06-20

申请号：US142560

申请日：1988-01-07

申请人： Uwe Hartmann ,  Fritz Ohnemus

发明人： Uwe Hartmann ,  Fritz Ohnemus

IPC分类号： H04N3/23 ,  H03K4/06 ,  H04N3/233

CPC分类号： H03K4/06 ,  H04N3/233

摘要： An arrangement for generating a voltage waveform having a triangular shape, in which a first voltage waveform having a sawtooth shape is added to a second voltage that has a sawtooth shape with horizontal components during predetermined intervals of the second voltage waveform. A biased diode bridge applies the horizontal components to the second voltage waveform, which has peaks equal to the peaks of the first voltage waveform. Upon adding the first and second voltage waveforms, a voltage waveform with triangular shape is generated.

摘要翻译： 一种用于产生具有三角形形状的电压波形的装置，其中在第二电压波形的预定间隔期间将具有锯齿形状的第一电压波形与具有水平分量的锯齿形状的第二电压相加。 偏置二极管桥将水平分量施加到具有等于第一电压波形的峰值的峰值的第二电压波形。 在添加第一和第二电压波形时，产生具有三角形形状的电压波形。

公开(公告)号：US5299009A

公开(公告)日：1994-03-29

申请号：US914726

申请日：1992-07-17

申请人： Martin Laufe ,  Fritz Ohnemus

发明人： Martin Laufe ,  Fritz Ohnemus

IPC分类号： H03F3/21 ,  H04N3/23 ,  H04N3/233

CPC分类号： H04N3/233

摘要： A reverse feedback amplifier which generates a correction current having two oscillations per line period is used to eliminate geometric distortions on the screen on a television kinescope. The reverse feedback amplifier includes an output transistor, a resonance transformer and a feedback network. An improvement of the amplifier includes a switch and a resistor for decreasing the output voltage of the reverse feedback amplifier during the scanning of the center portion of the screen.

摘要翻译： 用于产生每行周期具有两个振荡的校正电流的反向反馈放大器用于消除电视显像管上的屏幕上的几何失真。 反向反馈放大器包括输出晶体管，谐振变换器和反馈网络。 放大器的改进包括用于在扫描屏幕中心部分期间减小反向反馈放大器的输出电压的开关和电阻器。

公开(公告)号：US5093755A

公开(公告)日：1992-03-03

申请号：US378258

申请日：1989-07-11

申请人： Uwe Hartmann ,  Eduard Lohmuller ,  Fritz Ohnemus

发明人： Uwe Hartmann ,  Eduard Lohmuller ,  Fritz Ohnemus

IPC分类号： G09G1/00 ,  H01J29/07 ,  H04N9/29

CPC分类号： H04N9/29

摘要： A circuit for demagnetizing a mask in a color picture tube of a television receiver, in which a resistor with positive temperature coefficient is applied to the input alternating current when the receiver is turned on. A bridge rectifier is connected with one terminal, to a first pole of the alternating current source, via the demagnetizing coil that is mounted on the picture tube, and the resistor. The bridge rectifier has another terminal connected to a second pole of the alternating current source. A variable electronic switch interconnects the direct-current output terminals of the bridge rectifier. The variable electronic switch is controlled to continuously decrease current flowing through the demagnetizing coil to zero. For this purpose, a controlling voltage is obtained from a winding in a horizontal-frequency synchronized power-intake stage by flyback rectification. A feedback circuit is connected to a delay network and to the variable electronic switch for opening the latter completely after a time interval determined by the delay network.

摘要翻译： 一种用于对电视接收机的彩色显像管中的掩模进行去磁的电路，其中当接收器接通时，具有正温度系数的电阻器被施加到输入交流电流。 桥式整流器通过安装在显像管上的消磁线圈和电阻器与一个端子连接到交流电源的第一极。 桥式整流器具有连接到交流电源的第二极的另一端子。 可变电子开关将桥式整流器的直流输出端子互连。 可变电子开关被控制以将流过去磁线圈的电流持续减小到零。 为此，通过反激式整流在水平频率同步的动力吸入级中从绕组获得控制电压。 反馈电路连接到延迟网络和可变电子开关，用于在由延迟网络确定的时间间隔之后完全打开后者。

公开(公告)号：US5015960A

公开(公告)日：1991-05-14

申请号：US345039

申请日：1989-04-28

申请人： Uwe Hartmann ,  Fritz Ohnemus

发明人： Uwe Hartmann ,  Fritz Ohnemus

IPC分类号： H04N3/16 ,  H03K4/06 ,  H04N3/233

CPC分类号： H04N3/233 ,  H03K4/06

摘要： A method for generating a voltage with a triangular waveform which is independent of frequency. Two oppositely-phased voltages with sawtooth waveforms are added together in an adding circuit. These two waveforms have different amplitudes, and one of the waveforms has a horizontal section during predetermined intervals of a period. The resulting triangular waveform has points at which the waveform passes through zero, and these points coincide with the points at which the sawtooth waveforms pass through zero also. These points at which the waveforms pass through zero corresponds to 0.degree., 180.degree., and 360.degree. of a waveform cycle for eliminating substantially gullwing errors in television sets. These points correspond to the beginning, center and end of lines in the television sets.

摘要翻译： 一种用于产生与频率无关的三角波形的电压的方法。 具有锯齿波形的两相反相电压在加法电路中相加在一起。 这两个波形具有不同的幅度，并且一个波形在一段时间的预定间隔内具有水平截面。 所得到的三角波形具有波形通过零点的点，并且这些点与锯齿形波形也通过零点的点重合。 波形通过零点的这些点对应于波形周期的0°，180°和360°，以消除电视机中的基本上的鸥翼错误。 这些点对应于电视机中的线的开始，中心和末尾。

公开(公告)号：US4987350A

公开(公告)日：1991-01-22

申请号：US402075

申请日：1989-09-01

申请人： Uwe Hartmann ,  Fritz Ohnemus

发明人： Uwe Hartmann ,  Fritz Ohnemus

IPC分类号： H04N9/64

CPC分类号： H04N9/645

摘要： A video-display unit in which the beam current of a cathode-ray tube is measured for a predetermined time interval during display of some lines exterior to an image, for establishing automatic cutoff for the electronic beam. This electron beam is defocused during that predetermined time interval, and the defocusing is independent of the contents of the image, so that initial lines are substantially invisible. An electronic switch may be provided for decreasing the focusing voltage of the cathode ray tube. The electronic switch may be a high-vacuum tube connected to the focusing electrode of the cathode-ray tube, or this switch may be a transistor connected through a transformer to the focusing electrode. The transformer may be attenuated.

摘要翻译： 一种视频显示单元，其中在显示图像外部的一些线之前，以预定的时间间隔测量阴极射线管的束电流，以建立用于电子束的自动切断。 该电子束在该预定的时间间隔内散焦，并且散焦与图像的内容无关，使得初始线基本上是不可见的。 可以提供电子开关用于降低阴极射线管的聚焦电压。 电子开关可以是连接到阴极射线管的聚焦电极的高真空管，或者该开关可以是通过变压器连接到聚焦电极的晶体管。 变压器可能衰减。

公开(公告)号：US4968920A

公开(公告)日：1990-11-06

申请号：US345022

申请日：1989-04-28

申请人： Uwe Hartmann ,  Fritz Ohnemus

发明人： Uwe Hartmann ,  Fritz Ohnemus

IPC分类号： H04N3/23 ,  H04N3/233

CPC分类号： H04N3/233

摘要： Picture tubes with an extremely flat screen exhibit peculiar geometrical distortions in that the beginning and end of the lines in the picture bend symmetrical to the midline as the result of the magnetic deflection field typical of that type of tube.These distortions, called "bending errors," are eliminated in accordance with the invention by coupling another current into the vertical-deflection winding. A current that increases until the horizontal flyback begins is generated 5 to 10 microseconds before the electron beam ends its horizontal forward sweep and an additional current that decreases for 5 to 10 microseconds during the horizontal forward sweep is generated at the end of the horizontal flyback.Eliminating geometrical distortions on the screen of a picture tube.

摘要翻译： 具有非常平坦的屏幕的显像管表现出特殊的几何失真，因为这种类型的管典型的磁偏转场的结果，图像中的线的开始和结束与中线对称。 通过将另一电流耦合到垂直偏转绕组中，根据本发明消除了称为“弯曲误差”的这些失真。 在电子束结束其水平向前扫描之前，直到水平反激开始之前增加的电流产生5至10微秒，并且在水平反向扫描结束时产生在水平向前扫描期间减少5至10微秒的附加电流。 消除显像管屏幕上的几何畸变。