Capacitance sensing matrix for keyboard architecture

Coded data generation or conversion – Bodily actuated code generator – Including keyboard or keypad

Reexamination Certificate

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C324S662000, C345S173000, C178S018050, C178S018060

Reexamination Certificate

active

08059015

ABSTRACT:
An apparatus and method for selecting a keyboard key based on a position of a presence of a conductive object on a sensing device and a pre-defined area of the keyboard key. The apparatus may include a sensing device and a processing device. The sensing device may include a plurality of sensor elements to detect a presence of a conductive object on the sensing device. Multiple keyboard keys are assigned to pre-defined areas of the sensing device. The processing device is coupled to the sensing device using capacitance sensing pins, and may be operable to determine a position of the presence of the conductive object, and to select a keyboard key based on the position of the conductive object and the pre-defined areas of the sensing device.

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