Radial self-propagation pattern generation for disk file servowriting

Abstract From the Canadian patent

During a write revolution of a storage medium a transition is written on the , storage medium while servoing on another transition previously recorded on the storage medium. During that write, revolution, a position error signal corresponding to the position error of the transducer relative to the, previously recorded transition is determined. That position error signal is then stored, during the, write revolution to be used in computing a reference track value associated with the transition being, written to correct for the position error. Additionally a product servo-, pattern is written, which includes an embodying of the position error therein.