The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 21, 2004
Filed:
Sep. 27, 2002
Brian Fitzpatrick, Arlington Heights, IL (US);
Dwight Dipert, Fox River Grove, IL (US);
Russ Panzarella, Arlington Heights, IL (US);
3Com Corporation, Marlborough, MA (US);
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.