Device for correcting the line and/or frame fields of a deflector for
cathode ray tube comprising: a current sensor for evaluating the value of
a line current Il a series of comparators intended to compare the value
of the line current Il with reference values a current sensor for
evaluating the value of the frame current It an analogue/digital
converter for converting the analogue value of the frame current a
programmed correction memory which is addressed by the output signals
from the comparators and from the analogue/digital converter so as to
deliver to at least one digital/analogue converter, data which are
dependent on the addressing signals a low-pass filter for filtering the
output of the digital/analogue converter at least one correction coil for
correcting the deflection fields of the deflector, and generating a
correction field as a function of the output value from the low-pass
filter.