Method and apparatus for detecting whether or not generating for an error event of a code word that a perpendicular magnetic recording medium replays

Perpendicular magnetic recording medium, the (PMR perpendicular magnetic recording medium), an error event has occurred or not the detecting method of the code words (code word) for reproducing and apparatus. The method when divided source information shifted polynomial of the source information to be recorded in the perpendicular magnetic recording medium in a generator polynomial, the calculated remaining Cyclic Redundancy Check: cyclic generated as (CRC Cyclic Redundancy Check) bit and the resulting redundancy reads the code words for the addition of check bits to the source information, the method comprising the perpendicular magnetic recording on a recording medium and the recorded code words, characterized in that it comprises the step of detecting an error event has occurred or not in the code word read. Therefore, according to the present invention, so that vertical magnetic can be easily detected, while using a small number of information bits of the error events that occur when reading the code words to be recorded on the recording medium.