Computer system comprising a host connected to a disk drive employing state variable trap registers for providing stored servo and user data state variables to sampled-data channel
US6487032B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2002 |
| Grant date | Nov 26, 2002 |
| Priority date | — |
| Expiry date | Feb 25, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2516
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A computer system is disclosed comprising a host connected to a disk drive, the disk drive comprising a disk surface having a plurality of tracks arranged in an embedded servo format including servo track segments for storing servo data and data track segments for storing user data. The disk drive includes a read element operative during a user-data read operation for reading data from the disk surface to produce a time-multiplexed analog read signal that during a revolution of the disk represents analog read servo data during each of a first set of time intervals and represents analog read user data during each of a second set of time intervals. The disk drive includes a sampled signal processing circuit that generates a servo state variable while processing the time-multiplexed read signal during the first servo time interval and a user data state variable while processing the time-multiplexed read signal during the first user data time interval. The disk drive includes a servo state variable trap register for storing the servo state variable at the end of the first servo time interval. The disk drive includes a data state variable trap register for storing the user data state va…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.