Write Pre-Compensation Algorithm for High Linear Density Magnetic Recording
Original Publication Date: 1989-Nov-01
Included in the Prior Art Database: 2005-Jan-29
Disclosed is an algorithm for the compensation of a bit-shift in a magnetic recording process. The purpose of a conventional pre-compensation algorithm is only to cancel the bit shift due to inter- symbol interference in a read process. However, the new algorithm disclosed herein can compensate the bit shift not only in the read process but also in the write process. The bit shift in the write process is a position shift of a magnetic transition written on a disk. This is caused by an interaction between a head field and a transition field.