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:
Mar. 21, 2006
Filed:
Jul. 27, 2001
David H. Levy, Cambridge, MA (US);
Paul D. Butler, Haverhill, MA (US);
Scott A. Rhodes, Wakefield, MA (US);
David H. Levy, Cambridge, MA (US);
Paul D. Butler, Haverhill, MA (US);
Scott A. Rhodes, Wakefield, MA (US);
Digit Wireless, LLC, Cambridge, MA (US);
Abstract
Methods of providing input feedback in a device having a keyboard with a matrix of independent keys having associated switches arranged in rows and columns, wherein combinations of diagonally adjacent keys are associated with combination key outputs, and devices performing such methods. One method includes scanning for activated keys, providing provisional output to a user indicating that the activated key has been registered; continuing to scan the matrix; and, in response to activation of an adjacent key prior to release of the first activated key, providing final output to the user indicating that a combination of the first and adjacent keys has been registered, to the exclusion of the provisional output. Another features driving the rows in adjacent pairs while examining the columns for switch activation; and, in response to detecting switch activation in two adjacent columns while driving the rows in adjacent pairs, determining a combination key output.