公开(公告)号：US5561354A

公开(公告)日：1996-10-01

申请号：US504283

申请日：1995-07-19

Applicant: Henricus L. Simons ,  Dirk J. A. Teuling ,  Jozef J. M. Hulshof

Inventor： Henricus L. Simons ,  Dirk J. A. Teuling ,  Jozef J. M. Hulshof

IPC: H04N3/16 ,  H02M3/335 ,  H04N5/63 ,  H01J29/70 ,  H01J29/76

CPC classification number: H04N5/63 ,  H02M3/33523 ,  H02M3/33561

Abstract: In order to cause scan and/or fly-back voltages (Vsca, Vfly) supplied by a horizontal output stage (1) to vary at a desired rate during a change of state in a horizontal deflection circuit (1, 2, 4), a feedback circuit (4) is provided. This feedback circuit (4) processes the scan and/or fly-back voltages (Vsca, Vfly) to a control voltage (Vco) with which a duty cycle (dc) of a drive signal (Hdr) of a switching element (Tr) in the horizontal output stage (1) is influenced.

Abstract translation: 为了使水平偏转电路（1,2,4）中的水平输出级（1）提供的扫描和/或反激电压（Vsca，Vfly）以期望的速率变化， 提供反馈电路（4）。 该反馈电路（4）将扫描和/或反激电压（Vsca，Vfly）处理为控制电压（Vco），通过该控制电压，开关元件（Tr）的驱动信号（Hdr）的占空比（dc） 在水平输出级（1）中受到影响。

公开(公告)号：US5583400A

公开(公告)日：1996-12-10

申请号：US546862

申请日：1995-10-23

Applicant: Jozef J. M. Hulshof ,  Henricus L. Simons ,  Dirk J. A. Teuling

Inventor： Jozef J. M. Hulshof ,  Henricus L. Simons ,  Dirk J. A. Teuling

IPC: H04N3/23 ,  H04N3/233 ,  H04N3/27 ,  H01J29/56

CPC classification number: H04N3/233

Abstract: In the market, there is a tendency towards picture tubes with a super flat screen. Due to the flat screen, it is becoming increasingly difficult to meet the even tighter specification on North/South raster distortion (N/S distortion), the tighter specification being caused by a growing importance of text display and high resolution displays. A deflection correction circuit is provided which compensates for a N/S distortion by inducing a correction current (Icv) through a vertical deflection coil (Lv). The correction current (Icv) can be injected in the vertical deflection coil (Lv) via an injection transformer (Ti) coupled in series with the vertical deflection coil (Lv). The injection transformer (Ti) is driven via an output stage (3) by a waveform generator (1,2). The waveform generator (1,2) generates a voltage waveform (M) built up out of substantially straight line sections. The deflection coil (Lv) integrates the voltage waveform (M) into a current waveform (Icv) having substantially parabolic sections. Such an inexpensive and flexible deflection correction circuit can be used to compensate for top/bottom and/or seagull N/S distortion, or for correction of convergence distortions. The deflection correction circuit can be a discrete or an integrated circuit.

Abstract translation: 在市场上，有一个超级平面屏幕的显像管的趋势。 由于平板显示器，越来越难以满足北/南光栅失真（N / S失真）的更严格的规范，更严格的规格是由文本显示和高分辨率显示器的日益增长的重要性引起的。 提供了一种通过引导通过垂直偏转线圈（Lv）的校正电流（Icv）来补偿N / S失真的偏转校正电路。 校正电流（Icv）可以通过与垂直偏转线圈（Lv）串联耦合的注入变压器（Ti）注入到垂直偏转线圈（Lv）中。 注入变压器（Ti）由波形发生器（1,2）经输出级（3）驱动。 波形发生器（1,2）产生由大致直线部分构成的电压波形（M）。 偏转线圈（Lv）将电压波形（M）积分成具有大致抛物面的电流波形（Icv）。 这种廉价且柔性的偏转校正电路可用于补偿上/下和/或海鸥N / S失真，或用于校正收敛失真。 偏转校正电路可以是分立或集成电路。