Modular unitary disk file subsystem
US4639863A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1985 |
| Grant date | Jan 27, 1987 |
| Priority date | — |
| Expiry date | Jun 4, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S360/902
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A self contained fixed rotating disk expansion board subsystem may be installed and connected at an expansion slot location of a host computer. The subsystem includes an enclosed head/disk assembly, and circuit elements mounted on a printed circuit board which includes a connector for connecting to the control, data and address buses of the host computer at the expansion slot location. The head/disk assembly is mounted to a mounting substrate which may be the circuit board or which may be a frame to which the circuit board is also attached. Input/output routines are preferably provided to enable the host computer to make use of the subsystem without software driver modifications in the host operating system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.