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:
Apr. 23, 1996
Filed:
Feb. 26, 1993
Michael H Bowman, Palo Alto, CA (US);
3Com Corporation, Santa Clara, CA (US);
Abstract
An apparatus for allowing an add-on device to be inserted onto an active bus and configurable within one bus cycle is provided. The apparatus includes passive circuits used with a sequential multi-length pin arrangement on an I/O module. The apparatus also decouples the source of power to the I/O module from other devices on the bus which limits the disruption of power during the insertion. The I/O module limits current drawn from a backplane containing the bus which may disrupt signals during the insertion of the add-on device. And finally, the I/O module also limits bus signal disruption during insertion by precharging signal pins, increasing the resistance between the add-on I/O module pins and the backplane and adding capacitance to the bus.