VCM PWM to linear mode transition offset optimization to improve PES

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12254909
APP PUB NO 20230386512A1
SERIAL NO

18446612

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Importance

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Abstract

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Various illustrative aspects are directed to a data storage device comprising one or more disks, an actuator arm assembly comprising one or more disk heads and a voice coil motor (VCM), the VCM configured to operate in a PWM mode and a linear mode, and one or more processing devices configured to: seek the VCM towards a target track in the PWM mode; transition the VCM from the PWM mode to the linear mode, wherein the transitioning comprises switching an offset compensation value from a first offset compensation value to a second compensation offset value to compensate for a transition offset induced while transitioning the VCM from the PWM to the linear mode, wherein the first and the second offset compensation values correspond to the PWM and linear modes, respectively, and seek the VCM towards the target track in the linear mode for a linear mode time.

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Patent Owner(s)

  • WESTERN DIGITAL TECHNOLOGIES, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Byoun, Jaesoo Irvine, US 34 76
Ikedo, Gaku Fujisawa, JP 26 99
Ito, Hideaki Fujisawa, JP 129 1073
Johnson, Brian Laguna Hills, US 295 5461
Kagami, Naoyuki Fujisawa, JP 49 429

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