High data rate recording: Moving to 2 Gbit/s

Abstract

The experimental recording results obtained with short-yoke IBM heads and an experimental write driver with 450 ps rise time and programmable current overshoot level and duration were presented. After optimization of write current overshoot, the low-distortion recording for arbitrary data patterns was demonstrated at 1.6 Gbits. Analysis showed excessive current overshoot could cause complicated pattern-dependent distortions and should be avoided.