Tuning method and apparatus for reducing interference between adjacent channels

Abstract

A tuning method comprises: detecting a fundamental intermediate frequency IFof a channel to be received; determining whether the fundamental intermediate frequency IFis affected by an adjacent channel; when the fundamental intermediate frequency IFis affected by the adjacent channel, detecting a tuning intermediate frequency that is not affected by the adjacent channel while changing the fundamental intermediate frequency IF; when there is no variable intermediate frequency that is not affected by the adjacent channel, detecting a variable intermediate frequency that is least affected by the adjacent channel as the tuning intermediate frequency; and tuning the channel using the tuning intermediate frequency. A tuning apparatus comprises: a tuner for detecting a fundamental intermediate frequency IFof a channel to be received, a flash memory for storing a tuning algorithm, and a demodulator for detecting a tuning intermediate frequency while changing the fundamental intermediate frequency IF, and for tuning the channel using the tuning intermediate frequency based on a prescribed tuning algorithm, the tuning intermediate frequency being a variable intermediate frequency IFthat is not affected by an adjacent channel.