Ac-Bias Magnetic Recording of Data
Original Publication Date: 1989-Dec-01
Included in the Prior Art Database: 2005-Jan-29
A method for recording data on magnetic channels (such as disks) which is more tolerant to jitter and is amenable to very high track densities is described. The method calls for writing with AC-bias, thereby linearizing the channel, and inputting limited power so that the channel linearity is not distorted. A pre-filter is designed for the write process and post-filter is designed as equalizer during readback; these are designed to optimize the signal-to-noise ratio of the final read signal.