TUNER IMAGE INTERMEDIATE FREQUENCY CORRECTION METHOD THROUGH TUNING VOLTAGE CONTROL OF TELEVISION

摘要

PURPOSE: A tuner image intermediate frequency correction method is provided to always maintain the IF frequency within the AFT range by correcting the tuning voltage according to the IF frequency change of the television. CONSTITUTION: The tuner image intermediate frequency compensation method comprises: checking the current tuner IF frequency as turning on a television in a high or a low temperature; memorizing by checking the current tuning voltage(VT) if the IF frequency is higher or lower than the AFT range; and compensating the voltage by using the memorized tuning voltage of the current channel as a standard.