Hot pluggable motherboard bus connection method
June 30, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInput/output interface connector circuit for repowering and isolation Circuit card with soft power switch Printed circuit board connection system Device for indicating the position of printed circuit cards relative to their connectors Electronic board identification Electronic card connecting circuit Method and apparatus for controlled removal and insertion of circuit modules Power-on-concurrent maintenance Multi-board system having electronic keying and preventing power to improperly connected plug-in board with improperly configured diode connections System for computer peripheral bus for allowing hot extraction on insertion without disrupting adjacent devices Patent #: 5210855 InventorAssigneeApplicationNo. 083504 filed on 06/30/1993US Classes:361/58, Impedance insertion323/908, INRUSH CURRENT LIMITERS710/302, Hot insertion713/300COMPUTER POWER CONTROLExaminersPrimary: DeBoer, Todd E.Attorney, Agent or FirmForeign Patent References
International ClassH02H 009/00AbstractA method of connecting an IC card to a motherboard involves first connecting the ground busses, then the power busses and finally the general signal busses. When the power busses are connected, a low current is allowed to flow initially, then, a predetermined period of time is allowed to elapse for equalization of IC card and motherboard voltages, then a full current is allowed to flow. A method of disconnecting an IC card from a motherboard involves first disconnecting the general signal busses, then the power busses and finally the ground busses.Other References
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