Abstract: A keyboard graphic is displayed on a touch-sensitive display screen of a computing system when it is determined that a password should be entered, so that the password can be entered by touching individual spaces within the keyboard graphic. The keyboard graphic may be thus displayed several times during the operation of the system, including following a predetermined period in which no user input is made to the computing system, under control of a subroutine operating as a screen saver subroutine.
Type:
Grant
Filed:
June 8, 2001
Date of Patent:
December 11, 2007
Assignee:
Lenovo Singapore Pte. Ltd
Inventors:
Dawn Ashley Comfort, Robert John Schule
Abstract: A signal channel extends from motherboard to a daughter card across an edge connection. The daughter card includes a conductive plane that is held at a constant electrical potential. In order to compensate for a number of sources of inductance within the signal line at the edge connection, a circuit trace forming a portion of the signal channel includes an enlarged portion, spaced inward along the daughter card from the contact pads forming the edge connection, that adds capacitive coupling of the signal channel with the conductive plane.
Type:
Grant
Filed:
December 19, 2003
Date of Patent:
February 7, 2006
Assignee:
Lenovo (Singapore) Pte. Ltd.
Inventors:
Kamran Amini, Joseph Curtis Diepenbrock, Robert Joseph Evans, Michael Leo Scollard
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