Seagate Technology Incorporated

TaiVie Chiang

KianKeong Ooi

WingKong Chiang

Xiong Liu

MingZhong Ding

Qiang Bi

UttHeng Kan

Edmun ChianSong Seng

BengWee Quak

Jimmy Pang

WeiMing Yeow

Ricardo SoonLian Lim

Patrick TaiHeng Wong

KianSoon Yeo

Patrick TaiHeng

MingZhong Dong

A storage medium format is provided having a first band of a plurality of consecutive data storage tracks having user data stored thereto, a second band of a plurality of consecutive data storage tracks having other user data stored thereto, and a guard track medially disposed therebetween the first band and the second band and having system data stored thereto.

Data storage medium having system data stored in a guard band between zones of consecutive data storage tracks

A data storage medium and data storage system with improved efficiency of formatting are provided. One illustrative embodiment of the present invention pertains to a data storage medium. The data storage medium includes a first zone having servo information written with a first frequency, a second zone having servo information written with a second frequency, and a guard band disposed between the first zone and the second zone. The use of different frequencies in different zones contributes to optimizing the properties of the data storage medium, and the guard band contributes to optimizing the usage of the different zones.

Data storage medium with optimized servo format

A method of determining and monitoring head polarity of data heads comprises performing a head polarity detection routine. The head polarity detection routine comprises the step of setting a read gate period duration to a first value. The routine also comprises searching for a good address mark signal during a first read gate period with a channel polarity set to a first polarity. The routine further comprises identifying a polarity of a data head based upon the channel polarity when the good address mark is detected.

Head polarity detection algorithm and apparatus

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Singapore, Singapore

TaiVie Chiang