Patent Number: 7,715,144

Title: Track error measurement and recovery

Abstract: A method of measuring a track value is shown. The track value is related to track mis-registration, and is compared to a track value limit to assess a condition of the track. In example embodiments, the track value is determined as a function of multiple position error signals from previous wedges in the track. During a self servo writing operation, the track value and the track value limit are used to selectively perform a recovery action. In example embodiments, the track value limit is dynamically adjusted.

Inventors: Gerasimov; Anton (Santa Clara, CA)

Assignee: Kabushiki Kaisha Toshiba

International Classification: G11B 21/02 (20060101); G11B 5/596 (20060101)

Expiration Date: 5/11/12018