Method and system for providing a disambiguated keypad
First Claim
Patent Images
1. A keypad system comprising:
- a capacitive touchpad for detecting movement within a region;
a driver device electrically coupled to the capacitive touchpad, wherein the driver device is for generating a touchpad data signal corresponding to the movement detected by the capacitive touchpad; and
a controller electrically coupled to the driver device for receiving the touchpad data signal generated by the driver device and for resolving the touchpad data signal as one of a plurality of character values corresponding to the region.
4 Assignments
0 Petitions
Accused Products
Abstract
A keypad system (FIG. 2) and corresponding method (FIGS. 3-4) suitable for use in a subscriber device (1) includes a capacitive touchpad 22 for detecting movement within a region, a driver device 12 coupled to the capacitive touchpad, wherein the driver device is for generating a touchpad data signal corresponding to the movement detected by the touchpad; and a controller 14 coupled to the driver device for receiving the touchpad data signal and for resolving the signal to one of a plurality of characters corresponding to the region. A keypad device 16 may be used for generating a key selection signal indicative of the region.
242 Citations
20 Claims
-
1. A keypad system comprising:
-
a capacitive touchpad for detecting movement within a region;
a driver device electrically coupled to the capacitive touchpad, wherein the driver device is for generating a touchpad data signal corresponding to the movement detected by the capacitive touchpad; and
a controller electrically coupled to the driver device for receiving the touchpad data signal generated by the driver device and for resolving the touchpad data signal as one of a plurality of character values corresponding to the region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A keypad system comprising:
-
a keypad device that includes a plurality of keys and respective key switches for outputting a selection indication signal corresponding to a selection of one of the plurality of keys to a controller;
a memory electrically coupled to the controller, the memory including a plurality of lookup tables corresponding to the plurality of keys, respectively;
a capacitive touchpad adjacent and mechanically coupled to the keypad device; and
a driver device electrically coupled to the controller, wherein the driver device is for outputting a plurality of pulse signals to the capacitive touchpad sensor, wherein;
the capacitive touchpad includes a wire grid for outputting a resultant signal induced by interaction between movement and one of the plurality of pulse signals to the driver device; and
the controller is for resolving the resultant signal to a character value in accordance with the one of the plurality of lookup tables. - View Dependent Claims (12, 13)
-
-
14. A method for disambiguating a plurality of characters for a mechanical keypad comprising:
-
detecting pressure on one of a plurality of keys of the mechanical keypad and generating a key selection signal indicative of the one of the plurality of keys;
detecting movement on a capacitive touchpad and outputting a resultant signal indicative thereof; and
resolving the resultant signal as one of the plurality of characters based upon the resultant signal and the key selection signal. - View Dependent Claims (15, 16, 17, 18, 19, 20)
-
Specification