Apparatus and method for preventing occurrence of electromagnetic interference in portable terminal

摘要

An apparatus and method for setting a modulation frequency within a non-use frequency range so as to reduce ElectroMagnetic Interference (EMI) occurring during frequency modulation in a portable terminal are provided. The apparatus includes a controller and a frequency set unit. At frequency modulation, the controller determines whether a modulation frequency corresponds to a frequency inducing EMI. In a case where it is determined that the modulation frequency corresponds to the frequency inducing EMI, the frequency set unit resets the modulation frequency.

主权项

1. An apparatus for avoiding generation of ElectroMagnetic Interference (EMI) in a portable terminal, the apparatus comprising:
a storage unit configured to store frequency information comprising information of a frequency currently being used in the portable terminal; and a controller configured to determine whether the portable terminal is to perform a frequency modulation process and, when the frequency modulation process is to be performed, to determine a modulation frequency and the frequency currently being used, to determine whether generating the determined modulation frequency would induce the EMI in the portable terminal according to the frequency currently being used, and, in a case where it is determined that generating the determined modulation frequency would induce the EMI according to the frequency currently being used, to reset the modulation frequency to a frequency that would not induce the EMI according to the frequency currently being used, wherein, after resetting the modulation frequency, the controller controls to generate the reset modulation frequency and perform the frequency modulation process using the reset modulation frequency not inducing the EMI.