CAPACITIVE KEYBOARD WITH NON-LOCKING REDUCED KEYING AMBIGUITY
13 Assignments
0 Petitions
Accused Products
Abstract
Keyboards, keypads and other data entry devices can suffer from a keying ambiguity problem. In a small keyboard, for example, a user'"'"'s finger is likely to overlap from a desired key to onto adjacent ones. An iterative method of removing keying ambiguity from a keyboard comprising an array of capacitive keys involves measuring a signal strength associated with each key in the array, comparing the measured signal strengths to find a maximum, determining that the key having the maximum signal strength is the unique user-selected key, and maintaining that selection until either the initially selected key'"'"'s signal strength drops below some threshold level or a second key'"'"'s signal strength exceeds the first key'"'"'s signal strength.
42 Citations
30 Claims
-
1-14. -14. (canceled)
-
15. A key panel comprising:
-
a plurality of keys; and control logic in communication with the plurality of keys, the control logic configured to detect a sensor value of an inactive key surpassing a sensor value of an active key by a select amount and assigning the inactive key as the active key. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A method, comprising:
-
detecting, by a controller of a key panel having a plurality of keys, a sensor value of an inactive key of the keypad surpassing a sensor value of an active key of the keypad by a selected amount; and assigning the inactive key as the active key. - View Dependent Claims (26, 27, 28, 29, 30)
-
Specification