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. 12, 2005
Filed:
Jan. 23, 2002
Daryl Carvis Cromer, Apex, NC (US);
Howard Jeffrey Locker, Cary, NC (US);
Andy Lloyd Trotter, Raleigh, NC (US);
James Peter Ward, Raleigh, NC (US);
Daryl Carvis Cromer, Apex, NC (US);
Howard Jeffrey Locker, Cary, NC (US);
Andy Lloyd Trotter, Raleigh, NC (US);
James Peter Ward, Raleigh, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A computing system includes a motherboard including one or more connection subsystems, each of which includes a port connector and a device interface circuit conditioning signals transmitted or received through the port connector. The port connector includes a connection-sensing terminal, which is connected to ground through a cable, and which is allowed to float to a voltage supplied through a pull-up resistor when the cable is disconnected. The motherboard also includes a main voltage plane supplying electrical power to a separate voltage plane for each device interface circuit only when a cable is connected to the port connector which is also connected to the device interface circuit.