Method and apparatus for compensating vibration by adjusting track pitch
AssigneeHGST Netherlands B.V.
InventorsAbhishek Dhanda, Toshiki Hirano, Tetsuo Semba, Zvonimir Z. Bandic
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Abstract
A method, apparatus and a data storage device are provided for implementing data track pitch adjustment for data written on a recordable surface of a storage device under operational vibration conditions. An operational vibration disturbance spectrum is detected during a write operation and the data track pitch is selectively adjusted based on the detected operational vibration disturbance spectrum. The adjusted track pitch information is saved and used during a read operation.
Claims18
A method for implementing data track pitch adjustment for data written on a recordable surface of a storage device under operational vibration conditions comprising:
- detecting an operational vibration disturbance spectrum during a write operation;
- adjusting the data track pitch of data being written based on the detected operational vibration disturbance spectrum and saving track pitch information in firmware tables used during read operation.
The method for implementing data track pitch adjustment for data written on a recordable surface of a storage device under operational vibration conditions comprising:
- detecting an operational vibration disturbance spectrum during a write operation;
- adjusting the data track pitch of data being written based on the detected operational vibration disturbance spectrum and providing a wider data track pitch relative to a quiet data track pitch including using a relaxed write inhibit limit for a target performance operation;
- and
- saving the adjusted track pitch information for use during a read operation.
An apparatus for implementing data track pitch adjustment for data written on a recordable surface of a storage device under operational vibration conditions comprising:
- an operational vibration sensor detecting an operational vibration disturbance spectrum during a write operation;
- a controller coupled to said operational vibration sensor, said controller adjusting the data track pitch of data being written based on the detected operational vibration disturbance spectrum;
- and said controller saving track pitch information in firmware tables used during read operation.
A data storage device comprising:
- at least one disk;
- said disk including a recordable surface;
- an operational vibration sensor detecting an operational vibration disturbance spectrum during a write operation;
- a controller coupled to said operational vibration sensor, said controller adjusting the data track pitch of data being written based on the detected operational vibration disturbance spectrum and said controller saving track pitch information in firmware tables used during read operation.
Dependencies are inferred from the claim text.