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:
Nov. 26, 2002
Filed:
Aug. 13, 1999
Applicant:
Inventors:
Michael John Erickson, Loveland, CO (US);
Daniel V. Zilavy, Ft. Collins, CO (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/300 ;
U.S. Cl.
CPC ...
G06F 1/300 ;
Abstract
A method and apparatus for hot swapping and bus extension without data corruption. During the hot swapping of a circuit board in a bus, the bus is extended onto or retracted from the circuit board in a manner which does not corrupt the data on the bus. The extension or retraction of the bus is detected and a bus reset is asserted interrupting and preventing transactions on the bus. The bus reset is asserted for a minimum amount of time to allow the bus to stabilize after the hot swap. A bus extension/retraction detection component and a bus reset component perform these functions.