A slew-rate control device controls a slew rate of a control signal based on which data reading or data writing is performed with respect to a storage medium. A retry executing unit changes, when an error occurs during the data reading or the data writing, the slew rate of the control signal, and executes...http://www.google.com/patents/US7667909?utm_source=gb-gplus-sharePatent US7667909 - Slew-rate control device, storage device, and slew-rate control method
