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. 17, 2012
Filed:
Oct. 16, 2007
Nathan C Sherman, Bellevue, WA (US);
Nathan C Sherman, Bellevue, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Keyboard apparatus and methods for processing keyboard depressions are disclosed. One disclosed keyboard apparatus includes a keyboard having a plurality of keys configured to be depressed in a concurrent depression state, and a plurality of key switch matrices. Each key switch of the plurality of key switch matrices may be configured to be actuated by a corresponding key of the keyboard. The keyboard apparatus may further include a keyboard controller configured to determine whether a sensed key depression in the concurrent depression state is a ghost key depression, based on sensed key switch states of respective key switches in each of the plurality of key switch matrices which correspond to the sensed key depression.