Polling a preamplifier within a disk drive to remotely determine pre-established parametric values
US6191909A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2000 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | Jun 13, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0018
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for polling a preamplifier unit to remotely determine pre-established parametric values in a disk drive is disclosed. The disk drive comprises a controller, a preamplifier, and a plurality of transducers. The system for polling the preamplifier comprises means in the controller for generating a succession of serial bit characters each representative of a different pattern. A means is provided for successively transferring said serial bit characters from the controller to the preamplifier unit. A plurality of individual bit lines are provided in the preamplifier unit representative of at least one parametric value. A means is included in the preamplifier unit for comparing each serial bit pattern character received with said plurality of individual bit lines, and for generating a match signal when a serial bit pattern character received matches the plurality of individual bit lines. A means is provided for transferring the match signal from the preamplifier unit to the controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.