Back to results
US 11,049,517 B1Granted
Data storage device staggering access operations to facilitate concurrent access of two disk surfaces
AssigneeWestern Digital Technologies, Inc.
InventorsRobert P. Ryan, Shrey Khanna
Life of this patent
Estimating the term…
Abstract
A data storage device is disclosed comprising a first head actuated over the first disk surface, and a second head actuated over a second disk surface. A concurrent access of the first and second disk surface is executed by accessing the first disk surface without accessing the second disk surface during a single access interval, and after the single access interval, concurrently accessing the first and second disk surface during a dual access interval.
Claims14
A data storage device comprising:
- a first disk surface;
- a first head actuated over the first disk surface;
- a second disk surface;
- a second head actuated over the second disk surface;
- a first fine actuator configured to actuate the first head over the first disk surface and a second fine actuator configured to actuate the second head over the second disk surface;
- and
- control circuitry configured to execute a concurrent access of the first and second disk surface by at least:
- accessing the first disk surface without accessing the second disk surface during a first single access interval;
- and
- after the first single access interval, concurrently accessing the first and second disk surface during a dual access interval,
- wherein the first single access interval is based on a first gain of the first fine actuator and a second gain of the second fine actuator.
8 more elements
A data storage device comprising:
- a first disk surface comprising first servo sectors;
- a first head actuated over the first disk surface;
- a second disk surface comprising second servo sectors;
- a second head actuated over the second disk surface;
- and
- control circuitry configured to:
- measure an offset of the first head and the second head;
- and
- define first data tracks on the first disk surface based on the first servo sectors;
- and
- define second data tracks on the second disk surface based on the second servo sectors and the measured offset.
8 more elements
A data storage device comprising:
- a first disk surface;
- a first head actuated over the first disk surface;
- a second disk surface;
- a second head actuated over the second disk surface;
- a means for executing a concurrent access of the first and second disk surface;
- a means for measuring a radial offset of the first head and the second head;
- and
- a means for defining first data tracks on the first disk surface and second data tracks on the second disk surface based on the measured radial offset.
5 more elements
Dependencies are inferred from the claim text.