Seagate Technology Incorporated

Wen Xiang Xie

Jian Qiang

Andrew Michael Kowles

LiBin Cai

Xiong Liu

Timothy Richard Feldman

Utt Heng Kan

Peter S Harllee, Iii

Sze Chek Tan

Yew Meng Tan

Winahyu Aji Bimas

Poh Seng Lim

Zhong Quan Jiang

Than Zaw Thein

Implementations disclosed herein provide a method comprising comparing high-latency data sectors of a storage band, the high-latency data sectors having latency above a predetermined threshold, with target sectors for storing new data to determine one or more of the high-latency data sectors that may be skipped during retrieval of at-rest data from the storage band.

Band rewrite optimization

A method or system comprises determining a target sector of a write operation in response to a request for the write operation to a band in a storage device, determining a plurality of down-track data sectors in the band, and performing a band rewrite operation on the target data sector and the down-track data sectors.

Sector-based write operation

Systems and methods are disclosed for performing band rewrites on shingled storage media based on error scan counts. In one embodiment, a device may comprise a data storage medium including a first band and a processor. The first band may include a plurality of tracks storing data in a shingled manner where a first track at least partially overlaps a second track. The processor may be configured to receive a write command directed to the first band, increment a first rewrite count of the first band based on the write command, and when the first rewrite count exceeds a first rewrite threshold, perform a read-modify-write (RMW) operation for all of the first band. In some embodiments, a device may maintain write counts for sections of a band, and perform RMW operations on less than all of the band.

Band rewrites based on error scan counts

A method of initiating re-enumeration of a USB device without manual intervention is provided. The method involves a sequence emulating detachment and re-attachment of a device to the host while the device remains attached to the host. As the device remains attached to the host throughout the sequence, the host OS is manipulated to receive a plurality of preset device states in order for it to perceive a device change and to eventually initiate device enumeration. The sequence, which involves a series of command exchanges between the device and the host, may be initiated by a software application residing in the host upon an event requiring device enumeration.

Method for using host controller to solicit a command failure from target device in order to initiate re-enumeration of the target device

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Singapore, Singapore

Wen Xiang Xie