| 摘要 |
<p>The present invention relates to correction of East-West distortion of images produced on the screen of a picture tube. More particularly, it concerns an electronic circuit for dynamically controlling the AC component of the drive signal to an East-West amplifier (14) in a picture tube horizontal scanning system. It provides an electronic circuit comprising an input (44,66) for receiving a signal related to the beam current of the tube, an output for connection to the input of the amplifier (14), a capacitive means (32,64), and an active control device (30,60) for controlling the capacitive means in response to the signal at the circuit input (44,66).</p> |
