Differentiating between board-insertion power-on and chassis power-on
US6833712B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2002 |
| Grant date | Dec 21, 2004 |
| Priority date | — |
| Expiry date | Nov 23, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/28
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for detecting a board-insertion power-on versus a chassis power-on is disclosed. By using recessed circuit board sense contacts, recessed chassis sense contacts, or equivalent, a circuit can detect when power reaches a circuit board's power contacts before the circuit board sense contacts mate with corresponding chassis sense contacts. On the other hand, if a circuit board is fully seated when chassis power is first applied, the circuit will not detect that power has reached the power contacts before the sense contacts are mated, resulting in a different output. The circuit can include a latch, the output of the latch representing either a board-insertion power-on or a chassis power-on. The output of the latch can be used to modify a software or hardware condition or state, resulting in improved operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.