METHOD FOR CALCULATING CORRECTION VALUE OF WRITING POSITION OF MAGNETIC INFORMATION WRITING/READING DEVICE AND METHOD FOR CALCULATING CORRECTION VALUE OF WRITING POSITION

摘要

PROBLEM TO BE SOLVED: To provide a method for calculating a correction value of a writing position of a magnetic information writing/reading device which easily and exactly determines the correction value.;SOLUTION: The magnetic information writing/reading device includes a magnetic head which writes and reads the magnetic information to and from the magnetic stripes of a magnetic medium and a sensor which detects the position of the magnetic medium before the magnetic medium arrives at the magnetic head. The magnetic information writing/reading device captures the standard medium which is exact in the writing position of the magnetic information (step 1 (S 1)), determines the time when the sensor operates and the time when the start sentinel code of the standard medium is read in by the magnetic head (steps 2 to 5 (S 2 to 5)), calculates T/t by using the time difference T and the interval time t for preamble one bit component at the time of writing (steps 6 and 7 (S 6 and 7)), and determines the preamble number T/t pieces as the correction value.;COPYRIGHT: (C)2005,JPO&NCIPI