METHOD FOR CHARACTERISTIC TESTING OF HEAD IN HARDDISK DRIVE AND RECORDING MEDIA ADAPTING THE SAME

摘要

The present invention more specifically relates to a method of inspecting the properties characteristic of the head of the hard disk drive this invention relates to a method and recording medium for determining the unstable head . ; on the hard disk drive according to the present invention the head characteristic test method head signal by varying the bias current output from the head to be applied to the process for detecting a change in size ; Process for calculating the non-linearity of the signal change in the bias current changes; And is characterized in that it comprises the step of determining the quality of the head according to the calculated degree of nonlinearity . ; Head characteristic inspection process according to the invention has the characteristics and performance of the head unstable no matter has the effect to make it possible to detect the head .