Fixed disk drive mounted to printed circuit board
US5379439A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1991 |
| Grant date | Jan 3, 1995 |
| Priority date | — |
| Expiry date | Oct 24, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0673
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A fixed disk memory subsystem connects to digital signal buses and a power supply of a host computer and includes a printed circuit board forming a subsystem mounting substrate for mounting and connecting a head and disk assembly and drive electronics. The head and disk assembly includes a radially positionable head transducer for flying in close proximity to a data storage surface of at least one rotating data storage disk, an actuator for positioning the data transducer at concentric data tracks defined on the surface, and a DC brushless spindle motor for rotating the data storage disk. The drive electronics includes a data transducer position control circuit for controlling operation of the actuator in relation to the concentric data tracks, read/write electronics connected to the transducer, a disk user data controller for obtaining digital control signals and digital data blocks from the host computer for storage in predetermined ones of said data tracks, and for supplying digital status signals and digital data blocks retrieved from predetermined ones of said data tracks to the host computer, and a programmed digital microcontroller connected for controlling operations of sai…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.