09Method for controlling repeatable runout compensation algorithm
AssigneeSamsung Electronics Co., Ltd.
InventorYoung-Shun Ahn
Life of this patent
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Abstract
In a method for controlling a repeatable runout (RRO) compensation algorithm in a hard disk drive, it is determined whether to enable or disable an RRO compensation algorithm in a corresponding hard disk drive in a test environment while the drive is fabricated, and in a user environment. A check routine is used to determine whether to execute the RRO compensation algorithm. A determined result is written in a disk of the drive. When a user utilizes the drive, the RRO compensation algorithm is used or not used according to the determined result.
Claims22
A method for determining whether to execute a repeatable runout (RRO) compensation algorithm in a user environment, comprising the steps of:
- determining whether an idle mode of a hard disk drive is occurring;
- when said idle mode of said hard disk drive is occurring, commencing an RRO check test;
- and
- when said idle mode is not occurring, carrying out functions corresponding to other modes of said hard disk drive.
A method for determining whether to execute a repeatable runout (RRO) compensation algorithm in a user environment, comprising the steps of:
- determining whether an idle mode of a hard disk drive is occurring;
- and
- when said idle mode of said hard disk drive is occurring, commencing an RRO check test by disabling execution of said RRO compensation algorithm, and carrying out said RRO check test.
A method for determining whether to execute a repeatable runout (RRO) compensation algorithm in a user environment, comprising the steps of:
- determining whether an idle mode of a hard disk drive is occurring;
- when said idle mode of said hard disk drive is occurring, commencing an RRO check test;
- after commencing said RRO check test, measuring an average of a position error signal (PES) and a deviation thereof;
- comparing said deviation with a reference value;
- and
- when said deviation does not exceed said reference value, converting a current mode of said hard disk drive into a stand-by mode thereof.
Dependencies are inferred from the claim text.