公开(公告)号：US4565949A

公开(公告)日：1986-01-21

申请号：US672955

申请日：1984-11-19

申请人： Peter E. Haferl

发明人： Peter E. Haferl

IPC分类号： H04N3/233 ,  H04N

CPC分类号： H04N3/233

摘要： An inside-outside pincushion correction circuit includes an arrangement of first and second branches that provide a pair of current paths to a deflection current that flows in a deflection winding. The first branch includes a modulation inductance and the second branch includes a modulation capacitance that is coupled across the modulation inductance by a switch at a controllable time during the retrace interval. The controllable time varies in a vertical rate parabolic manner to provide deflection current modulation to correct inside and outside pincushion distortions. Variation of the retrace interval associated with the modulation inductance are compensated by offsetting variations produced by the retrace capacitance.

摘要翻译： 内外枕形校正电路包括第一和第二分支的布置，其提供在偏转绕组中流动的偏转电流的一对电流路径。 第一分支包括调制电感，第二分支包括在回扫间隔期间以可控时间通过开关在调制电感上耦合的调制电容。 可控时间以垂直速率抛物线方式变化，以提供偏转电流调制以校正内部和外部枕形失真。 与调制电感相关的回扫间隔的变化通过回扫电容产生的偏移补偿来补偿。

公开(公告)号：US4488181A

公开(公告)日：1984-12-11

申请号：US434315

申请日：1982-10-14

申请人： Peter E. Haferl

发明人： Peter E. Haferl

IPC分类号： H04N3/20 ,  H04N5/30

CPC分类号： H04N3/20

摘要： The picture tube of a television receiver includes, inter alia, a plurality of electrodes to develop and accelerate an electron beam, and a phosphor screen on which the electron beam impinges. A deflection generator is coupled to a deflection winding for generating scanning current to produce a sweep of the electron beam across the phosphor screen. A remote control circuit develops an on/off command signal for switching the television receiver between normal run and standby modes of operation. A first switch is responsive to the command signal and disables normal generation of the scanning current upon the occurrence of the off-state of the command signal to inhibit normal sweep of the electron beam. A second switch, also responsive to the command signal, applies to one of the electrodes of the picture tube, such as the grid electrode, a blocking potential upon the occurrence of the off-state of the command signal to suppress generation of the electron beam prior to the disablement of scanning current generation.

摘要翻译： 电视接收机的显像管尤其包括用于显影和加速电子束的多个电极以及电子束撞击的荧光屏。 偏转发生器耦合到偏转绕组，用于产生扫描电流以产生穿过荧光屏的电子束的扫描。 遥控电路产生用于在正常运行和待机操作模式之间切换电视接收机的开/关命令信号。 第一开关响应于指令信号，并且在发出指令信号的关闭状态时禁止扫描电流的正常产生，以禁止电子束的正常扫描。 也可以对命令信号作出响应的第二开关适用于诸如栅电极的显像管的一个电极，在发出指令信号的关闭状态时阻塞电位以抑制电子束的产生 在禁用扫描电流产生之前。

公开(公告)号：US4429257A

公开(公告)日：1984-01-31

申请号：US428238

申请日：1982-09-29

申请人： Peter E. Haferl

发明人： Peter E. Haferl

IPC分类号： H04N3/16 ,  H04N3/18 ,  H04N3/223 ,  H04N3/23 ,  H04N3/233 ,  H01J29/56

CPC分类号： H04N3/233

摘要： A controllable switch operated at the horizontal deflection rate is coupled to a horizontal deflection winding to generate scanning current during a trace interval of a deflection cycle. A deflection retrace capacitor forms a retrace resonant circuit with the deflection winding during the retrace interval. A supply inductance such as a winding of a horizontal output transformer is coupled either conductively or magnetically to a source of supply energy. A second capacitor is coupled to the supply inductance and to the controllable switch and forms a second resonant circuit with the supply inductance within the retrace interval to generate a pulse voltage. The pulse voltage energizes a load circuit such as the ultor high voltage circuit. A modulation inductance is coupled to a source of modulation signals and to the deflection winding and supplies a modulation current to the retrace resonant circuit to modulate the amplitude of the scanning current without modulating the amplitude of the supply inductance pulse voltage. The modulation may occur at a vertical rate to provide east-west pincushion distortion correction.

摘要翻译： 以水平偏转速率操作的可控开关耦合到水平偏转绕组，以在偏转周期的跟踪间隔期间产生扫描电流。 偏转回扫电容器在回扫间隔期间与偏转线圈形成回扫谐振电路。 诸如水平输出变压器的绕组的电源电感器以电流或磁性耦合到供电能源。 第二电容器耦合到电源电感和可控开关，并且在回扫间隔内与供电电感形成第二谐振电路以产生脉冲电压。 脉冲电压激励负载电路，如高压阳极电压电路。 调制电感耦合到调制信号源和偏转绕组，并将调制电流提供给回扫谐振电路，以调制扫描电流的幅度，而不调制电源电感脉冲电压的幅度。 调制可以以垂直速率发生，以提供东西枕形失真校正。

公开(公告)号：US4129806A

公开(公告)日：1978-12-12

申请号：US830854

申请日：1977-09-06

申请人： Peter E. Haferl

发明人： Peter E. Haferl

IPC分类号： H04N3/233 ,  H01J29/56

CPC分类号： H04N3/233

摘要： A horizontal deflection circuit drives a load such as an ultor voltage generator which is subject to load variations. Raster distortion is corrected by a switched pincushion correction circuit. Further raster distortion due to load-dependent retrace time modulation is corrected by a corrective circuit which includes a retrace duration sensing circuit for generating a control signal representative of the horizontal retrace pulse duration. The control signal is coupled to the pincushion correction circuit so that it acts additionally in a manner to compensate the load-dependent raster size variations.

摘要翻译： 水平偏转电路驱动诸如经过负载变化的高压阳极电压发生器的负载。 光栅失真由开关枕形校正电路校正。 由负载相关的回扫时间调制引起的进一步的光栅失真由校正电路校正，校正电路包括用于产生表示水平回扫脉冲持续时间的控制信号的回扫持续时间感测电路。 控制信号耦合到枕形校正电路，使得其以补偿依赖于负载的光栅尺寸变化的方式另外起作用。

公开(公告)号：US4088931A

公开(公告)日：1978-05-09

申请号：US722600

申请日：1976-09-13

申请人： Peter E. Haferl

发明人： Peter E. Haferl

IPC分类号： H04N3/233 ,  H01J29/56

CPC分类号： H04N3/233

摘要： A side pincushion correction circuit having an impedance circuit in series with the deflection coil. A controlled switch coupled in a branch of the impedance circuit is operated at times during the second half of the horizontal retrace interval which are progressively advanced during the first half of vertical interval and retarded during second half of vertical interval. Enhanced inside pincushion distortion correction is provided when the impedance circuit includes a capacitor coupled in series with the switch.

摘要翻译： 具有与偏转线圈串联的阻抗电路的侧枕形校正电路。 耦合在阻抗电路的支路中的受控开关在水平回扫间隔的后半段中的时间被操作，这在垂直间隔的前半部分中逐渐提前，并且在垂直间隔的后半段期间延迟。 当阻抗电路包括与开关串联耦合的电容器时，提供增强的内部枕形失真校正。

公开(公告)号：US5287042A

公开(公告)日：1994-02-15

申请号：US934377

申请日：1992-08-24

申请人： Peter E. Haferl

发明人： Peter E. Haferl

IPC分类号： H04N3/16 ,  H04N3/22 ,  H04N3/223 ,  H04N3/233 ,  H04N7/015 ,  G09G1/04 ,  H01J29/70

CPC分类号： H04N3/22 ,  H04N3/233

摘要： A selectable aspect ratio raster is generated on a CRT with a 16:9 aspect ratio screen by a deflection yoke and deflection amplifier. The deflection amplifier is coupled in a non-floating configuration to the deflection yoke. This permits a switching arrangement to control the horizontal deflection amplitude by the selectable addition of inductance in series, with the yoke. The switching arrangement also controls other deflection circuit parameters to provide optimum raster correction at the selected aspect ratio.

摘要翻译： 通过偏转线圈和偏转放大器，在具有16:9宽高比屏幕的CRT上产生可选择的纵横比光栅。 偏转放大器以非浮动结构耦合到偏转线圈。 这允许切换装置通过与轭的可选择的电感相加来控制水平偏转幅度。 开关装置还控制其它偏转电路参数，以在选定的纵横比提供最佳光栅校正。

公开(公告)号：US5111120A

公开(公告)日：1992-05-05

申请号：US655526

申请日：1991-02-14

申请人： Peter E. Haferl

发明人： Peter E. Haferl

IPC分类号： H04N3/16 ,  H04N3/23 ,  H04N3/233

CPC分类号： H04N3/233

摘要： Two windings of a flyback transformer in a horizontal deflection circuit are inductively coupled with opposite polarity to a source of horizontal rate retrace pulses. The windings have a common junction coupled to ground. A circuit energized by the retrace pulses generates modulated currents of opposite polarity. Conduction of each current is controlled by a switch circuit including a semiconductor switch and two diodes. The switch circuits are coupled to one another at a junction, and the junction is coupled to an energy storage capacitance. One of the diodes conducts positively valued portions of the respective current through the energy storage capacitance and the other of the diodes conducts negatively valued portions of the respective current through the semiconductor switch. Each semiconductor switch is a current discharge path. The energy storage capacitance is responsive to the currents for developing a vertical deflection voltage in phase with the currents at the horizontal rate for driving a vertical deflection current in a vertical deflection yoke. The vertical deflection current is related to the difference in amplitude between positively valued portions of the currents. A North-South pincushion correction current in phase with the horizontal deflection is generated by integration of the vertical deflection voltage in the vertical deflection yoke. A North-South pincushion transformer has a first winding capacity coupled to the energy storage capacitance and a second winding forming part of a horizontal rate resonant circuit coupled in series with the vertical deflection yoke.

公开(公告)号：US5083198A

公开(公告)日：1992-01-21

申请号：US583881

申请日：1990-09-19

申请人： Peter E. Haferl ,  Thomas H. Sauder

发明人： Peter E. Haferl ,  Thomas H. Sauder

IPC分类号： H04N5/205 ,  H04N9/69

CPC分类号： H04N9/69

摘要： A nonlinear video signal processing system provides gamma correction to improve rendition of picture details near black. In addition, picture brilliance is improved using a brightness and frequency dependent enhancement circuit providing increased detail signal contrast in bright picture areas. In each color channel, the respective color signal is gradually separated into a low level amplitude signal portion and a higher level amplitude signal portion. The higher level amplitude portion is high-pass frequency filtered. The low level signal portion and the high-pass filtered higher amplitude signal portion are added to the original, linear video signal for producing a combined signal coupled to the kinescope. The low level signal portion is DC coupled to the linear signal and the high level signal portion is AC coupled to the linear signal.

摘要翻译： 非线性视频信号处理系统提供伽马校正以改善黑色附近的图像细节的再现。 此外，使用亮度和频率依赖的增强电路来提高图像亮度，从而在亮度图像区域中提供增加的细节信号对比度。 在每个颜色通道中，相应的颜色信号逐渐分为低电平振幅信号部分和较高电平振幅信号部分。 较高电平振幅部分是高通滤波的。 低电平信号部分和高通滤波的较高幅度信号部分被添加到原始的线性视频信号中，用于产生耦合到显像管的组合信号。 低电平信号部分被直流耦合到线性信号，并且高电平信号部分被交流耦合到线性信号。

公开(公告)号：US4737881A

公开(公告)日：1988-04-12

申请号：US853421

申请日：1986-04-18

申请人： Peter E. Haferl

发明人： Peter E. Haferl

IPC分类号： H04N9/29 ,  H01F13/00

CPC分类号： H04N9/29

摘要： A degaussing circuit for a cathode ray tube, of a video display apparatus includes a resonating capacitor that is charged prior to degaussing. A degaussing coil is disposed about the cathode ray tube. An SCR, responsive to an on/off control signal, is turned on by a control switch for coupling the resonating capacitor to the degaussing coil in order to generate an AC, degaussing current in the coil having an amplitude that diminishes to a low amplitude during a degaussing interval. Positive feedback is used for speeding up the turn-on time of the control switch. A series pass transistor switch couples a source of a supply voltage to a delay network. The series pass transistor switch is coupled in the current path of the current that is supplied by the power supply. An energizing voltage is developed at the output of the delay network. The magnitude of the energizing voltage exceeds a predetermined value after a predetermined delay time following the closing of the transistor switch, that is determined by the delay network. The delayed energizing voltage is coupled to a deflection circuit to initiate deflection circuit operation after conclusion of the degaussing.

摘要翻译： 视频显示装置的阴极射线管消磁电路包括在消磁之前被充电的谐振电容器。 消磁线圈围绕阴极射线管设置。 响应于开/关控制信号的SCR由用于将谐振电容器耦合到消磁线圈的控制开关导通，以便在线圈中产生具有降低到低幅度的幅度的AC，消磁电流 消磁间隔 正反馈用于加快控制开关的导通时间。 串联晶体管开关将电源电压耦合到延迟网络。 串联晶体管开关耦合在由电源提供的电流的电流路径中。 在延迟网络的输出端产生通电电压。 在由延迟网络确定的晶体管开关闭合之后的预定延迟时间之后，通电电压的大小超过预定值。 延迟的激励电压耦合到偏转电路以在消磁结束之后启动偏转电路操作。

公开(公告)号：US4687972A

公开(公告)日：1987-08-18

申请号：US833149

申请日：1986-02-27

申请人： Peter E. Haferl

发明人： Peter E. Haferl

IPC分类号： H04N3/23 ,  H04N3/233 ,  H01J29/56

CPC分类号： H04N3/233

摘要： A video display apparatus incorporates a picture tube, such as a square-planar picture tube, that includes a phosphor screen located on a faceplate having an aspherically curved geometry that produces a relatively flat surface contour. Deflection circuitry generates line and field scanning currents in respective line and field deflection windings to enable the electron beams of the picture tube to scan a raster on the phosphor screen. The electron beams are subject to a scanning error that results in raster distortion, such as side pincushion distortion. A parabola generator produces a parabolic modulation of the scanning of the electron beams to generally correct the raster distortion while retaining a residual error due to the aspherically curved geometry of the faceplate. A nonlinear waveshaping circuit modifies the parabolic modulation of the scanning current in accordance with the aspherically curved geometry to provide additional modulation of the electron beam scanning for correcting the residual error. The nonlinear waveshaping circuit includes a current source and a switched current divider that is responsive to a threshold level of the parabolic voltage developed by the parabola generator.

摘要翻译： 视频显示装置包括诸如方形平面显像管的显像管，其包括位于具有产生相对平坦的表面轮廓的非球面弯曲几何形状的面板上的荧光屏。 偏转电路在相应的线和场偏转绕组中产生线和场扫描电流，以使显像管的电子束能够扫描荧光屏上的光栅。 电子束受到导致光栅失真的扫描误差，例如侧枕形失真。 抛物线发生器产生扫描电子束的抛物面调制，以通常校正光栅失真，同时保留由于面板的非球面弯曲几何形状引起的残余误差。 非线性波形形成电路根据非球面弯曲几何修改扫描电流的抛物线调制，以提供用于校正残余误差的电子束扫描的附加调制。 非线性波形成形电路包括电流源和开关电流分配器，其响应于由抛物线发生器产生的抛物线电压的阈值电平。