Data storage device employing predictive oversampling for servo control
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United States of America Patent
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Jan 8, 2019
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N/A
app pub date -
Jun 22, 2018
filing date -
Jun 22, 2018
priority date (Note) -
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Abstract
A data storage device is disclosed comprising a disk comprising servo data, and an actuator configured to actuate a head over the disk. A servo controller is configured to generate digital control values at a first sample rate based on the servo data and transmit the digital control values over a serial interface to a driver circuit. The driver circuit is configured to generate predictive oversampled control values at a second sample rate higher than the first sample rate based on at least two of the digital control values received from the servo controller, apply the predictive oversampled control values to a digital-to-analog converter (DAC) to generate an analog control signal, and apply the analog control signal to the actuator.
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