Seagate Technology Incorporated

Jimmy Pang

Qiang Bi

UttHeng Kan

Xiong Liu

Kevin Arthur Gomez

KianKeong Ooi

Edmun ChianSong Seng

BengWee Quak

WingKong Chiang

WeiMing Yeow

TaiVie Chiang

Ricardo SoonLian Lim

MingZhong Ding

Gabor Szita

Niroot Jierapipatanakul

KokHoe Chia

WaiOnn Chee

Patrick TaiHeng Wong

BoonSeng Ong

Djohni Chandra

BengSee Lim

PeiKoh Lee

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 method, and system configured to implement the method, are provided. The method includes the steps of identifying a last usable track on a surface as a function of a parameter, and defining a standoff band of tracks relative to the last usable track to obtain an achieved maximum track on the surface. The last usable track is, in exemplary embodiments, a track beyond a default maximum track on a surface of a data storage medium.

Adaptive recording band expansion methodology

An apparatus and method for mounting a shock sensor to the printed circuit board (PCB) of a disc drive are provided. In particular, the present invention allows the shock sensor to be mounted at any location on the printed circuit board rather than being limited to placement adjacent a mounting screw. The present invention includes a clamping mechanism for rigidly clamping the PCB to the head disc assembly (HDA) so that any shock is properly transmitted from the HDA to the PCB and then to the shock sensor. In one exemplary embodiment, the PCB is clamped between a shield and the HDA. The shock sensor is then position near the point at which the PCB is clamped so that the point of clamping provides transmission of any shock in the Z-axis to the shock sensor. Shocks in the X-Y axis direction are transmitted via the normal mounting screws.

Data storage device with shock sensor mounted on circuit board and provided adjacent shield and disc assembly protrusions

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

Track pitch correction method and apparatus

Linearizing hysteresis of a microactuator for a disc drive by modeling the microactuator with a first polynomial equation to provide a linear displacement response of the microactuator responding to an applied voltage, deriving a set of constants from a plurality of burst patterns for use with the first polynomial equation to provide a set of variables for use in resolving the second polynomial equation to provide a set of equations from which a set of constants can be derived for use by the second polynomial equation to provide a voltage to the microactuator to displace the microactuator by a predetermined incremental distance.

Method for linearizing microactuator hysteresis for a disc drive

Growing community of inventors

Singapore, Singapore

Jimmy Pang