Patent ID: 9196265
Filing Date: 2015-11-24
Classification: G11B

Abstract:
1. A pulse duration control system for a magnetic disk-drive system, the system comprising: a rise delay system configured to generate a first plurality of control voltages in response to a write data input signal changing between a first state and a second state; a fall delay system configured to generate a second plurality of control voltages in response to the write data input signal changing between the first state and the second state; and a comparator system configured to generate a rising-edge overshoot signal and a falling-edge overshoot signal based on a comparison of the first and second pluralities of control voltages, the rising-edge overshoot signal being associated with a duration of a positive overshoot current pulse for a write current at a transition of the write data input signal from the first state to the second state, and the falling-edge overshoot signal being associated with a duration of a negative overshoot current pulse for the write current at a transition of the write data input signal from the second state to the first state.