Data storage device transmitting delta servo control value over serial interface
US10504553B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 20, 2019 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Mar 20, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5547
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data storage device is disclosed comprising a disk comprising servo data, and an actuator configured to actuate a head radially over the disk. The disk drive further comprises control circuitry comprising a servo controller and a driver circuit comprising an accumulator, wherein the servo controller is configured to generate digital control values based on the servo data and transmit the digital control values over a serial interface to the drive circuit. The accumulator is initialized based on a first digital control value received over the serial interface during a first servo interval, and then the accumulator is adjusted based on a second digital control value received over the serial interface during a second servo interval. An analog control signal is generated based on an output of the accumulator, and the analog control signal is applied to the actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.