Communication bus controller including designation of primary and secondary status according to slot position
US6675242B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2001 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Jul 24, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4081
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A communication system with a plurality of interface slots includes control logic for determining and designating the status of one or more controller cards inserted in one of the slots such that: a controller card is designated as the primary card if it is inserted in an interface slot while the other slots are empty; a controller card in an interface slot with primary status retains its primary status while other controller cards are added or removed from the system; a controller card in an interface slot with a non-primary status assumes primary status if the controller card with non-primary status is plugged in a slot that after a power interruption is designated as the slot to assume primary status, or the controller card with primary status is removed from the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.