Low-power hard disk drive system architecture
US5521768A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1994 |
| Grant date | May 28, 1996 |
| Priority date | — |
| Expiry date | Aug 17, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A hard disk drive system operates from a limited power source to provide for the storage of data on the surface of a rotating hard disk media. An embedded controller incorporates a data channel for transferring data with respect to a hard disk media. The controller includes first and second subsections and a power-down circuit for providing separately switchable power from the power source to the first and section subsections. The controller further includes a processor for controlling the power-down circuit. The processor nominally provides a low duty cycle control signal to the power-down circuit for switching the provision of power to the first subsection of the controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.