Patent ID: 7848700

Claim:
A method comprising: storing a master table including a quantity of alternate frequencies associated with a main frequency for at least first and second regions; receiving at least first and second radio data system signals; extracting a first region table from the first radio data system signal and a second region table from the second radio data system signal, the first and second region tables each including a quantity of alternate frequencies and a list of alternate frequencies; comparing the quantity of alternate frequencies for the second region stored in the master table with the quantity of alternate frequencies included in the second region table; comparing the list of alternate frequencies included in the second region table with the list of alternate frequencies included in the first region table if the quantity of alternate frequencies included in the second region table is equal to or greater than the quantity of alternate frequencies for the second region stored in the master table; identifying one of the alternate frequencies included in the second region table if each of the alternate frequencies in the list of alternate frequencies included in the first region table exists in the second region table; outputting the identified alternate frequency if each of the alternate frequencies in the list of alternate frequencies included in the first region table exists in the second region table; performing a seek operation if any of the alternate frequencies in the list of alternate frequencies included in the first region table does not exist in the second region table; extracting a regional range code from a radio data system signal; and determining whether to output the identified alternate frequency or perform the seek operation based upon the regional range code, wherein determining whether to output the identified alternate frequency or perform the seek operation is based upon the regional range code being indicative of an international code.