Method of eliminating wiggle noise for a disk driving/recording apparatus
First Claim
1. A method of eliminating a wiggle noise generated by a data write current applied to a thin-film head during a data write operation in a disk drive storage apparatus having a storage medium on which data is recorded, said method comprising the step of:
- controlling said head to perform a dummy write operation onto a gap between sector intervals in a corresponding track on the storage medium when a read error occurs during a data read operation; and
retrying said data read operation, said data read operation being retried a predetermined number of times if the read error continues to occur during said data read operation.
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Accused Products
Abstract
A method of eliminating a wiggle noise generated by a data write current applied to a thin-film head during a data write operation in a disk drive storage apparatus having a storage medium on which data is recorded, the method comprising the step of: on occurrence of any read error owing to the wiggle noise, causing the head to perform a dummy write operation onto a given one of one or more intersector gap intervals in a corresponding track on the storage medium; and retrying a data read operation, subsequent to searching a target sector, the data read operation being repeated by predetermined retry times if the read error is continuously detected on the data read operation.
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Citations
12 Claims
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1. A method of eliminating a wiggle noise generated by a data write current applied to a thin-film head during a data write operation in a disk drive storage apparatus having a storage medium on which data is recorded, said method comprising the step of:
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controlling said head to perform a dummy write operation onto a gap between sector intervals in a corresponding track on the storage medium when a read error occurs during a data read operation; and retrying said data read operation, said data read operation being retried a predetermined number of times if the read error continues to occur during said data read operation. - View Dependent Claims (2)
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3. A method of eliminating a wiggle noise generated in a magnetic head of a disk drive due to a domain pinning phenomenon occurring during a transition from a write operation to a read operation, said method comprising the steps of:
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performing a track following operation; detecting occurrence of a read error due to said wiggle noise occurring during a read operation for reading servo information for controlling a magnetic head during a write operation; detecting when a microcontroller of said disk drive has generated an index pulse after detection of said read error; and executing a write operation while said head is positioned over a gap between adjacent sectors of a track being followed during said track following operation upon detection of said index pulse. - View Dependent Claims (4, 5)
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6. A method of eliminating a wiggle noise generated in a magnetic head of a disk drive due to a domain pinning phenomenon occurring during a transition from a write operation to a read operation, said method comprising the steps of:
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performing a track following operation; detecting occurrence of a read error due to said wiggle noise occurring during a read operation for reading servo information for controlling a magnetic head during a write operation; and executing a write operation while said head is positioned over a gap between adjacent sectors of a track being followed during said track following operation to eliminate said wiggle noise. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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Specification