Patent ID: 6291948
Filing Date: 2001-09-18
Classification: H01J,H04N

Abstract:
An image distortion correction circuit comprising:first and second horizontal correction coils in a horizontal deflection current path through which a horizontal deflection current flows, said first and second horizontal correction coils being connected in series with each other and being wound in such directions as to generate oppositely directed magnetic fields respectively;magnetic field biasing means for biasing said magnetic fields in a first direction; anda vertical correction section having first and second terminals between which a vertical deflection current flows,said vertical correction section including:a first vertical correction coil in a first current path between said first and second terminals;a second vertical correction coil in a second current path between said first and second terminals, said second current path being independent of said first current path; anda shared resistor commonly connected in parallel with said first and second current paths, whereinsaid first and second current paths selectively carry said vertical deflection current of first and second polarities respectively, andsaid first and second vertical correction coils generate a magnetic field in a second direction opposite from said first direction when said vertical deflection current of said first and second polarities flows through said first and second vertical correction coils respectively.