Patent Document ID: 9030417
Application ID: 13415718

Base Claim:
1. A method for assisting in avoiding incorrect input in a portable terminal, the method comprising: identifying an input character string and, among previously registered candidate words, searching among a plurality of candidate words recommended for the input character string; calculating a similarity between the input character string and each of the searched candidate words based at least partially upon a type of keypad used to input the input character string, wherein calculating the similarity between the input character string and each of the searched candidate words comprises: identifying the keypad type; determining each cost of an insert operation, a delete operation, and a replace operation corresponding to the identified keypad type; and calculating an edit distance using the operations according to the respective cost of each of the candidate words; and providing one or more of the searched candidate words according to the calculated similarity.

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Claim 2:
2. The method of claim 1 , wherein identifying the input character string and searching the candidate words recommended for the input character string further comprises analyzing each letter of the input character string and, among the previously registered candidate words, search candidate words with letters having more than a specified threshold level similar to the analyzed input character string.