| US 7,580,216 B1 | ||
| Disk servo pattern writing | ||
| Ke Han, Fremont, Calif. (US); Pantas Sutardja, Los Gatos, Calif. (US); and Rui Cao, San Jose, Calif. (US) | ||
| Assigned to Marvell International Ltd., Hamilton (Bermuda) | ||
| Filed on Dec. 10, 2007, as Appl. No. 11/953,811. | ||
| Application 11/953811 is a continuation of application No. 10/799474, filed on Mar. 11, 2004, granted, now 7,307,807, filed on Dec. 11, 2007. | ||
| Claims priority of provisional application 60/505416, filed on Sep. 23, 2003. | ||
| Claims priority of provisional application 60/505947, filed on Sep. 24, 2003. | ||
| Int. Cl. G11B 21/02 (2006.01); G11B 5/596 (2006.01); G11B 20/06 (2006.01) | ||
| U.S. Cl. 360—75 [360/77.08; 360/39] | 57 Claims |
| 1. A system comprising:
a machine-readable medium; and
servo signal processing circuitry to perform operations comprising:
obtaining timing information from a spiral servo reference track on the machine-readable medium to determine head position;
and
generating a servo track with servo information based on the determined head position;
wherein the obtaining comprises determining a waveform polarity of a signal from the spiral servo reference track on the machine-readable
medium.
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