Addressing system for an expandable modular electromechanical memory assembly
US4811275A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 1986 |
| Grant date | Mar 7, 1989 |
| Priority date | — |
| Expiry date | May 28, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/14
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An easily installable and easily expandable electromechanical memory assembly for a data processing system includes: a frame having a backplane, a plurality of printed circuit board connectors on the backplane, and conductors on the backplane which interconnect the connectors; a controller on a printed circuit board which is plugged into one of the connectors and consists essentially of logic circuitry for generating and receiving control signals on the backplane conductors; and multiple data storage units; each unit being mounted on a separate printed circuit board, plugged into a separate connector, and consisting essentially of a mechanical drive mechanism which reads data by physically moving a data storage medium past a data sensor in direct response to the control signals from the controller on the backplane conductors. Each data storage unit has switches for assigning an address to the drive and has terminals for receiving signals from the backplane conductors which select the drive based on the state of the switches and received signals. These switches are set to assign the same address to each drive. Signals on the backplane conductors which are transmitted from the contro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.